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AVR128DB64T-E
Public Made by Adomby adom
Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), QFN-64-EP(9x9). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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AVR128DB64T-E
Microchip Tech · Microcontroller Units (MCUs/MPUs/SOCs) · QFN-64-EP(9x9)
AVR128DB64T-E from Microchip Tech, in a QFN-64-EP(9x9). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | PA3 | bidirectional | General-purpose I/O pin on the VDD domain; alternate functions include USART0 XDIR, TWI0 SCL (Fm+ capable), TCA0 WO3, and CCL LUT0 OUT. |
| 2 | PA4 | bidirectional | General-purpose I/O pin; alternate functions include USART0 TxD (alternate position), SPI0 MOSI, TCA0 WO4 and WOA. |
| 3 | PA5 | bidirectional | General-purpose I/O pin; alternate functions include USART0 RxD (alternate position), SPI0 MISO, TCA0 WO5 and WOB. |
| 4 | PA6 | bidirectional | General-purpose I/O pin; alternate functions include USART0 XCK (alternate position), SPI0 SCK, WOC and CCL LUT0 OUT (alternate position). |
| 5 | PA7 | bidirectional | General-purpose I/O pin; alternate functions include CLKOUT, SPI0 SS, WOD, EVSYS EVOUTA (alternate position), and the default ZCD0 to ZCD2 output position. |
| 6 | VDD | power_in | Main digital supply pin; the device operates from 1.8 V to 5.5 V per the ordering information. |
| 7 | GND | power_in | Ground reference pin for the digital supply and I/O. |
| 8 | PB0 | bidirectional | General-purpose I/O pin; alternate functions include USART3 TxD (alternate position), TCA0 WO0 (alternate position), TCB1 WO0 and CCL LUT4 IN0. |
| 9 | PB1 | bidirectional | General-purpose I/O pin; alternate functions include USART3 RxD (alternate position), TCA0 WO1 (alternate position), TCB1 WO1 and CCL LUT4 IN1. |
| 10 | PB2 | bidirectional | General-purpose I/O pin; alternate functions include TWI SDA (Fm+ capable), USART3 XCK (alternate position), TWI1 SDA master, EVSYS EVOUTB and CCL LUT4 IN2. |
| 11 | PB3 | bidirectional | General-purpose I/O pin; alternate functions include TWI SCL (Fm+ capable), USART3 XDIR (alternate position), TWI1 SCL master, TCA0 WO3 (alternate position) and CCL LUT4 OUT. |
| 12 | PB4 | bidirectional | General-purpose I/O pin; alternate functions include USART3 TxD (alternate position), SPI1 MOSI (alternate position), TCA0 WO4 (alternate position) and TCD0 WOA (alternate position). |
| 13 | PB5 | bidirectional | General-purpose I/O pin; alternate functions include USART3 RxD (alternate position), SPI1 MISO (alternate position), TCA0 WO5 (alternate position) and TCD0 WOB (alternate position). |
| 14 | PB6 | bidirectional | General-purpose I/O pin; alternate functions include USART3 XCK (alternate position), SPI1 SCK (alternate position), TWI1 SDA slave (alternate position), TCD0 WOC (alternate position) and CCL LUT4 OUT (alternate position). |
| 15 | PB7 | bidirectional | General-purpose I/O pin; alternate functions include USART3 XDIR (alternate position), SPI1 SS (alternate position), TWI1 SCL slave (alternate position), TCD0 WOD (alternate position) and EVSYS EVOUTB (alternate position). |
| 16 | PC0 | bidirectional | General-purpose I/O pin on the port C (MVIO) pads; alternate functions include USART1 TxD, SPI1 MOSI, TCA0 WO0 (alternate position), TCB2 WO and CCL LUT1 IN0. |
| 17 | PC1 | bidirectional | General-purpose I/O pin on the port C (MVIO) pads; alternate functions include USART1 RxD, SPI1 MISO, TCA0 WO1 (alternate position), TCB3 WO and CCL LUT1 IN1. |
| 18 | PC2 | bidirectional | General-purpose I/O pin; alternate functions include TWI SDA (Fm+ capable), USART1 XCK, SPI1 SCK, TWI0 SDA master (alternate position), TCA0 WO2 (alternate position), EVSYS EVOUTC and CCL LUT1 IN2. |
| 19 | PC3 | bidirectional | General-purpose I/O pin; alternate functions include TWI SCL (Fm+ capable), USART1 XDIR, SPI1 SS, TWI0 SCL master (alternate position), TCA0 WO3 (alternate position) and CCL LUT1 OUT. |
| 20 | VDDIO2 | power_in | Supply pin for the multi-voltage I/O (MVIO) pins; it must be connected to VDD in single-supply mode and may be a separate voltage in dual-supply mode. |
| 21 | GND | power_in | Ground reference pin for the digital supply and I/O. |
| 22 | PC4 | bidirectional | General-purpose I/O pin; alternate functions include USART1 TxD (alternate position), SPI1 MOSI (alternate position), TCA0 WO4 (alternate position) and TCB0 WO0 (alternate position). |
| 23 | PC5 | bidirectional | General-purpose I/O pin; alternate functions include USART1 RxD (alternate position), SPI1 MISO (alternate position), TCA0 WO5 (alternate position) and TCB0 WO1 (alternate position). |
| 24 | PC6 | bidirectional | General-purpose I/O pin; alternate functions include analog comparator AC0 to AC2 OUT (alternate position), USART1 XCK (alternate position), SPI1 SCK (alternate position), TWI0 SDA slave (alternate position), TCA0 WO2 (alternate position) and CCL LUT1 OUT (alternate position). |
| 25 | PC7 | bidirectional | General-purpose I/O pin; alternate functions include analog comparator AC0 to AC2 OUT (alternate position), USART1 XDIR (alternate position), SPI1 SS (alternate position), TWI0 SCL slave (alternate position) and EVSYS EVOUTC (alternate position); it is also the ZCD0 to ZCD2 output alternate position. |
| 26 | PD0 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN0; alternate functions include analog comparator negative inputs (AINN1), TCA0 WO0 (alternate position) and CCL LUT2 IN0. |
| 27 | PD1 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN1; alternate functions include OPAMP0 non-inverting input, ZCD0 ZCIN, TCA0 WO1 (alternate position) and CCL LUT2 IN1. |
| 28 | PD2 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN2; alternate functions include analog comparator positive inputs (AINP0), OPAMP0 OUT, TCA0 WO2 (alternate position), EVSYS EVOUTD and CCL LUT2 IN2. |
| 29 | PD3 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN3; alternate functions include OPAMP0 inverting input, TCA0 WO3 (alternate position) and CCL LUT2 OUT. |
| 30 | PD4 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN4; alternate functions include OPAMP1 non-inverting input and TCA0 WO4 (alternate position). |
| 31 | PD5 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN5; alternate functions include OPAMP1 OUT and TCA0 WO5 (alternate position). |
| 32 | PD6 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN6; alternate functions include analog comparator positive inputs (AINP3), an output option and CCL LUT2 OUT (alternate position). |
| 33 | PD7 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN7; it is also the external voltage reference pin VREFA and has OPAMP1 inverting input and EVSYS EVOUTD (alternate position) functions. |
| 34 | AVDD | power_in | Analog supply pin; the datasheet states AVDD is internally connected to VDD and is not a separate power domain. |
| 35 | AGND | power_in | Analog ground pin. |
| 36 | PE0 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN8; alternate functions include USART4 TxD, SPI0 MOSI (alternate position) and TCA0 WO0 (alternate position). |
| 37 | PE1 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN9; alternate functions include OPAMP2 non-inverting input, USART4 RxD, SPI0 MISO (alternate position) and TCA0 WO1 (alternate position). |
| 38 | PE2 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN10; alternate functions include OPAMP2 OUT, USART4 XCK, SPI0 SCK (alternate position), TCA0 WO2 (alternate position) and EVSYS EVOUTE. |
| 39 | PE3 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN11; alternate functions include OPAMP2 inverting input, ZCD1 ZCIN, USART4 XDIR, SPI0 SS (alternate position) and TCA0 WO3 (alternate position). |
| 40 | PE4 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN12; alternate functions include USART4 TxD (alternate position), TCA1 WO0 (alternate position) and TCA0 WO4 (alternate position). |
| 41 | PE5 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN13; alternate functions include USART4 RxD (alternate position), TCA1 WO1 (alternate position) and TCA0 WO5 (alternate position). |
| 42 | PE6 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN14; alternate functions include USART4 XCK (alternate position) and TCA1 WO2 (alternate position). |
| 43 | PE7 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN15; alternate functions include ZCD2 ZCIN, USART4 XDIR (alternate position) and EVSYS EVOUTE (alternate position). |
| 44 | PF0 (XTAL32K1) | bidirectional | General-purpose I/O pin and 32.768 kHz crystal oscillator pin XTAL32K1; also ADC0 analog input AIN16, which cannot be used as a negative differential input, plus USART2 TxD and CCL LUT3 IN0. |
| 45 | PF1 (XTAL32K2) | bidirectional | General-purpose I/O pin and 32.768 kHz crystal oscillator pin XTAL32K2; also ADC0 analog input AIN17, which cannot be used as a negative differential input, plus USART2 RxD and CCL LUT3 IN1. |
| 46 | PF2 | bidirectional | General-purpose I/O pin, ADC0 analog input AIN18 (not usable as negative differential input) and TWI SDA (Fm+ capable); also USART2 XCK, TCA0 WO2 (alternate position), EVSYS EVOUTF and CCL LUT3 IN2. |
| 47 | PF3 | bidirectional | General-purpose I/O pin, ADC0 analog input AIN19 (not usable as negative differential input) and TWI SCL (Fm+ capable); also USART2 XDIR, TCD0 WOD (alternate position) and CCL LUT3 OUT. |
| 48 | PF4 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN20 (not usable as negative differential input); alternate functions include USART2 TxD (alternate position) and TCA0 WO4 (alternate position). |
| 49 | PF5 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN21 (not usable as negative differential input); alternate functions include USART2 RxD (alternate position) and TCA0 WO5 (alternate position). |
| 50 | PF6 | input | Input-only pin (I/O note 6) that serves as the external RESET pin with pull-up enabled when the RSTPINCFG fuse selects RESET; the device stays in reset while it is low. |
| 51 | UPDI | input | Dedicated Unified Program and Debug Interface pin used for one-wire half-duplex UART programming and debugging, with no other function. |
| 52 | PG0 | bidirectional | General-purpose I/O pin; alternate functions include USART5 TxD, TCA0 WO0 (alternate position), TCA1 WO0 (alternate position) and CCL LUT5 IN0. |
| 53 | PG1 | bidirectional | General-purpose I/O pin; alternate functions include USART5 RxD, TCA0 WO1 (alternate position), TCA1 WO1 (alternate position) and CCL LUT5 IN1. |
| 54 | PG2 | bidirectional | General-purpose I/O pin; alternate functions include USART5 XCK, TCA0 WO2 (alternate position), TCA1 WO2 (alternate position) and EVSYS EVOUTG. |
| 55 | PG3 | bidirectional | General-purpose I/O pin; alternate functions include USART5 XDIR, TCA0 WO3 (alternate position), TCA1 WO3 (alternate position) and CCL LUT5 OUT. |
| 56 | VDD | power_in | Main digital supply pin; the device operates from 1.8 V to 5.5 V per the ordering information. |
| 57 | GND | power_in | Ground reference pin for the digital supply and I/O. |
| 58 | PG4 | bidirectional | General-purpose I/O pin; alternate functions include USART5 TxD (alternate position), SPI0 MOSI (alternate position), TCA0 WO4 (alternate position) and TCA0 WOA (alternate position). |
| 59 | PG5 | bidirectional | General-purpose I/O pin; alternate functions include USART5 RxD (alternate position), SPI0 MISO (alternate position), TCA0 WO5 (alternate position) and TCA0 WOB (alternate position). |
| 60 | PG6 | bidirectional | General-purpose I/O pin; alternate functions include USART5 XCK (alternate position), SPI0 SCK (alternate position), TCD0 WOC (alternate position) and CCL LUT5 OUT (alternate position). |
| 61 | PG7 | bidirectional | General-purpose I/O pin; alternate functions include USART5 XDIR (alternate position), SPI0 SS (alternate position), TCD0 WOD (alternate position) and EVSYS EVOUTG (alternate position). |
| 62 | PA0 (XTALHF1) | bidirectional | General-purpose I/O pin and high-frequency crystal pin XTALHF1; alternate functions include EXTCLK, USART0 TxD, TCA0 WO0 and CCL LUT0 IN0. |
| 63 | PA1 (XTALHF2) | bidirectional | General-purpose I/O pin and high-frequency crystal pin XTALHF2; alternate functions include USART0 RxD, TCA0 WO1 and CCL LUT0 IN1. |
| 64 | PA2 | bidirectional | General-purpose I/O pin; alternate functions include TWI SDA (Fm+ capable), USART0 XCK, TCA0 WO2, TWI0 SDA master, EVSYS EVOUTA and CCL LUT0 IN2. |
| 65 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | QFN-64-EP(9x9) |
| Category | Embedded Processors & Controllers |
| Pins | 65 |
CAD (KiCad official)
- Symbol:
AVR128DB64T-E - Footprint:
Package_DFN_QFN:QFN-64-1EP_9x9mm_P0.5mm_EP6x6mm - 3D model: QFN-64-EP(9x9) (KiCad packages3D, STEP)
- 3D model files:
avr128db64t-e-etched.step/avr128db64t-e-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);avr128db64t-e.step/avr128db64t-e.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (660 pp, sha256
9a87cbce668ce806, retrieved 2026-10-30, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).
# AVR128DB64T-E
**Microchip Tech** · Microcontroller Units (MCUs/MPUs/SOCs) · QFN-64-EP(9x9)
AVR128DB64T-E from Microchip Tech, in a QFN-64-EP(9x9). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
## Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | PA3 | bidirectional | General-purpose I/O pin on the VDD domain; alternate functions include USART0 XDIR, TWI0 SCL (Fm+ capable), TCA0 WO3, and CCL LUT0 OUT. |
| 2 | PA4 | bidirectional | General-purpose I/O pin; alternate functions include USART0 TxD (alternate position), SPI0 MOSI, TCA0 WO4 and WOA. |
| 3 | PA5 | bidirectional | General-purpose I/O pin; alternate functions include USART0 RxD (alternate position), SPI0 MISO, TCA0 WO5 and WOB. |
| 4 | PA6 | bidirectional | General-purpose I/O pin; alternate functions include USART0 XCK (alternate position), SPI0 SCK, WOC and CCL LUT0 OUT (alternate position). |
| 5 | PA7 | bidirectional | General-purpose I/O pin; alternate functions include CLKOUT, SPI0 SS, WOD, EVSYS EVOUTA (alternate position), and the default ZCD0 to ZCD2 output position. |
| 6 | VDD | power_in | Main digital supply pin; the device operates from 1.8 V to 5.5 V per the ordering information. |
| 7 | GND | power_in | Ground reference pin for the digital supply and I/O. |
| 8 | PB0 | bidirectional | General-purpose I/O pin; alternate functions include USART3 TxD (alternate position), TCA0 WO0 (alternate position), TCB1 WO0 and CCL LUT4 IN0. |
| 9 | PB1 | bidirectional | General-purpose I/O pin; alternate functions include USART3 RxD (alternate position), TCA0 WO1 (alternate position), TCB1 WO1 and CCL LUT4 IN1. |
| 10 | PB2 | bidirectional | General-purpose I/O pin; alternate functions include TWI SDA (Fm+ capable), USART3 XCK (alternate position), TWI1 SDA master, EVSYS EVOUTB and CCL LUT4 IN2. |
| 11 | PB3 | bidirectional | General-purpose I/O pin; alternate functions include TWI SCL (Fm+ capable), USART3 XDIR (alternate position), TWI1 SCL master, TCA0 WO3 (alternate position) and CCL LUT4 OUT. |
| 12 | PB4 | bidirectional | General-purpose I/O pin; alternate functions include USART3 TxD (alternate position), SPI1 MOSI (alternate position), TCA0 WO4 (alternate position) and TCD0 WOA (alternate position). |
| 13 | PB5 | bidirectional | General-purpose I/O pin; alternate functions include USART3 RxD (alternate position), SPI1 MISO (alternate position), TCA0 WO5 (alternate position) and TCD0 WOB (alternate position). |
| 14 | PB6 | bidirectional | General-purpose I/O pin; alternate functions include USART3 XCK (alternate position), SPI1 SCK (alternate position), TWI1 SDA slave (alternate position), TCD0 WOC (alternate position) and CCL LUT4 OUT (alternate position). |
| 15 | PB7 | bidirectional | General-purpose I/O pin; alternate functions include USART3 XDIR (alternate position), SPI1 SS (alternate position), TWI1 SCL slave (alternate position), TCD0 WOD (alternate position) and EVSYS EVOUTB (alternate position). |
| 16 | PC0 | bidirectional | General-purpose I/O pin on the port C (MVIO) pads; alternate functions include USART1 TxD, SPI1 MOSI, TCA0 WO0 (alternate position), TCB2 WO and CCL LUT1 IN0. |
| 17 | PC1 | bidirectional | General-purpose I/O pin on the port C (MVIO) pads; alternate functions include USART1 RxD, SPI1 MISO, TCA0 WO1 (alternate position), TCB3 WO and CCL LUT1 IN1. |
| 18 | PC2 | bidirectional | General-purpose I/O pin; alternate functions include TWI SDA (Fm+ capable), USART1 XCK, SPI1 SCK, TWI0 SDA master (alternate position), TCA0 WO2 (alternate position), EVSYS EVOUTC and CCL LUT1 IN2. |
| 19 | PC3 | bidirectional | General-purpose I/O pin; alternate functions include TWI SCL (Fm+ capable), USART1 XDIR, SPI1 SS, TWI0 SCL master (alternate position), TCA0 WO3 (alternate position) and CCL LUT1 OUT. |
| 20 | VDDIO2 | power_in | Supply pin for the multi-voltage I/O (MVIO) pins; it must be connected to VDD in single-supply mode and may be a separate voltage in dual-supply mode. |
| 21 | GND | power_in | Ground reference pin for the digital supply and I/O. |
| 22 | PC4 | bidirectional | General-purpose I/O pin; alternate functions include USART1 TxD (alternate position), SPI1 MOSI (alternate position), TCA0 WO4 (alternate position) and TCB0 WO0 (alternate position). |
| 23 | PC5 | bidirectional | General-purpose I/O pin; alternate functions include USART1 RxD (alternate position), SPI1 MISO (alternate position), TCA0 WO5 (alternate position) and TCB0 WO1 (alternate position). |
| 24 | PC6 | bidirectional | General-purpose I/O pin; alternate functions include analog comparator AC0 to AC2 OUT (alternate position), USART1 XCK (alternate position), SPI1 SCK (alternate position), TWI0 SDA slave (alternate position), TCA0 WO2 (alternate position) and CCL LUT1 OUT (alternate position). |
| 25 | PC7 | bidirectional | General-purpose I/O pin; alternate functions include analog comparator AC0 to AC2 OUT (alternate position), USART1 XDIR (alternate position), SPI1 SS (alternate position), TWI0 SCL slave (alternate position) and EVSYS EVOUTC (alternate position); it is also the ZCD0 to ZCD2 output alternate position. |
| 26 | PD0 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN0; alternate functions include analog comparator negative inputs (AINN1), TCA0 WO0 (alternate position) and CCL LUT2 IN0. |
| 27 | PD1 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN1; alternate functions include OPAMP0 non-inverting input, ZCD0 ZCIN, TCA0 WO1 (alternate position) and CCL LUT2 IN1. |
| 28 | PD2 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN2; alternate functions include analog comparator positive inputs (AINP0), OPAMP0 OUT, TCA0 WO2 (alternate position), EVSYS EVOUTD and CCL LUT2 IN2. |
| 29 | PD3 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN3; alternate functions include OPAMP0 inverting input, TCA0 WO3 (alternate position) and CCL LUT2 OUT. |
| 30 | PD4 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN4; alternate functions include OPAMP1 non-inverting input and TCA0 WO4 (alternate position). |
| 31 | PD5 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN5; alternate functions include OPAMP1 OUT and TCA0 WO5 (alternate position). |
| 32 | PD6 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN6; alternate functions include analog comparator positive inputs (AINP3), an output option and CCL LUT2 OUT (alternate position). |
| 33 | PD7 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN7; it is also the external voltage reference pin VREFA and has OPAMP1 inverting input and EVSYS EVOUTD (alternate position) functions. |
| 34 | AVDD | power_in | Analog supply pin; the datasheet states AVDD is internally connected to VDD and is not a separate power domain. |
| 35 | AGND | power_in | Analog ground pin. |
| 36 | PE0 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN8; alternate functions include USART4 TxD, SPI0 MOSI (alternate position) and TCA0 WO0 (alternate position). |
| 37 | PE1 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN9; alternate functions include OPAMP2 non-inverting input, USART4 RxD, SPI0 MISO (alternate position) and TCA0 WO1 (alternate position). |
| 38 | PE2 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN10; alternate functions include OPAMP2 OUT, USART4 XCK, SPI0 SCK (alternate position), TCA0 WO2 (alternate position) and EVSYS EVOUTE. |
| 39 | PE3 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN11; alternate functions include OPAMP2 inverting input, ZCD1 ZCIN, USART4 XDIR, SPI0 SS (alternate position) and TCA0 WO3 (alternate position). |
| 40 | PE4 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN12; alternate functions include USART4 TxD (alternate position), TCA1 WO0 (alternate position) and TCA0 WO4 (alternate position). |
| 41 | PE5 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN13; alternate functions include USART4 RxD (alternate position), TCA1 WO1 (alternate position) and TCA0 WO5 (alternate position). |
| 42 | PE6 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN14; alternate functions include USART4 XCK (alternate position) and TCA1 WO2 (alternate position). |
| 43 | PE7 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN15; alternate functions include ZCD2 ZCIN, USART4 XDIR (alternate position) and EVSYS EVOUTE (alternate position). |
| 44 | PF0 (XTAL32K1) | bidirectional | General-purpose I/O pin and 32.768 kHz crystal oscillator pin XTAL32K1; also ADC0 analog input AIN16, which cannot be used as a negative differential input, plus USART2 TxD and CCL LUT3 IN0. |
| 45 | PF1 (XTAL32K2) | bidirectional | General-purpose I/O pin and 32.768 kHz crystal oscillator pin XTAL32K2; also ADC0 analog input AIN17, which cannot be used as a negative differential input, plus USART2 RxD and CCL LUT3 IN1. |
| 46 | PF2 | bidirectional | General-purpose I/O pin, ADC0 analog input AIN18 (not usable as negative differential input) and TWI SDA (Fm+ capable); also USART2 XCK, TCA0 WO2 (alternate position), EVSYS EVOUTF and CCL LUT3 IN2. |
| 47 | PF3 | bidirectional | General-purpose I/O pin, ADC0 analog input AIN19 (not usable as negative differential input) and TWI SCL (Fm+ capable); also USART2 XDIR, TCD0 WOD (alternate position) and CCL LUT3 OUT. |
| 48 | PF4 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN20 (not usable as negative differential input); alternate functions include USART2 TxD (alternate position) and TCA0 WO4 (alternate position). |
| 49 | PF5 | bidirectional | General-purpose I/O pin and ADC0 analog input AIN21 (not usable as negative differential input); alternate functions include USART2 RxD (alternate position) and TCA0 WO5 (alternate position). |
| 50 | PF6 | input | Input-only pin (I/O note 6) that serves as the external RESET pin with pull-up enabled when the RSTPINCFG fuse selects RESET; the device stays in reset while it is low. |
| 51 | UPDI | input | Dedicated Unified Program and Debug Interface pin used for one-wire half-duplex UART programming and debugging, with no other function. |
| 52 | PG0 | bidirectional | General-purpose I/O pin; alternate functions include USART5 TxD, TCA0 WO0 (alternate position), TCA1 WO0 (alternate position) and CCL LUT5 IN0. |
| 53 | PG1 | bidirectional | General-purpose I/O pin; alternate functions include USART5 RxD, TCA0 WO1 (alternate position), TCA1 WO1 (alternate position) and CCL LUT5 IN1. |
| 54 | PG2 | bidirectional | General-purpose I/O pin; alternate functions include USART5 XCK, TCA0 WO2 (alternate position), TCA1 WO2 (alternate position) and EVSYS EVOUTG. |
| 55 | PG3 | bidirectional | General-purpose I/O pin; alternate functions include USART5 XDIR, TCA0 WO3 (alternate position), TCA1 WO3 (alternate position) and CCL LUT5 OUT. |
| 56 | VDD | power_in | Main digital supply pin; the device operates from 1.8 V to 5.5 V per the ordering information. |
| 57 | GND | power_in | Ground reference pin for the digital supply and I/O. |
| 58 | PG4 | bidirectional | General-purpose I/O pin; alternate functions include USART5 TxD (alternate position), SPI0 MOSI (alternate position), TCA0 WO4 (alternate position) and TCA0 WOA (alternate position). |
| 59 | PG5 | bidirectional | General-purpose I/O pin; alternate functions include USART5 RxD (alternate position), SPI0 MISO (alternate position), TCA0 WO5 (alternate position) and TCA0 WOB (alternate position). |
| 60 | PG6 | bidirectional | General-purpose I/O pin; alternate functions include USART5 XCK (alternate position), SPI0 SCK (alternate position), TCD0 WOC (alternate position) and CCL LUT5 OUT (alternate position). |
| 61 | PG7 | bidirectional | General-purpose I/O pin; alternate functions include USART5 XDIR (alternate position), SPI0 SS (alternate position), TCD0 WOD (alternate position) and EVSYS EVOUTG (alternate position). |
| 62 | PA0 (XTALHF1) | bidirectional | General-purpose I/O pin and high-frequency crystal pin XTALHF1; alternate functions include EXTCLK, USART0 TxD, TCA0 WO0 and CCL LUT0 IN0. |
| 63 | PA1 (XTALHF2) | bidirectional | General-purpose I/O pin and high-frequency crystal pin XTALHF2; alternate functions include USART0 RxD, TCA0 WO1 and CCL LUT0 IN1. |
| 64 | PA2 | bidirectional | General-purpose I/O pin; alternate functions include TWI SDA (Fm+ capable), USART0 XCK, TCA0 WO2, TWI0 SDA master, EVSYS EVOUTA and CCL LUT0 IN2. |
| 65 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | QFN-64-EP(9x9) |
| Category | Embedded Processors & Controllers |
| Pins | 65 |
## CAD (KiCad official)
- Symbol: `AVR128DB64T-E`
- Footprint: `Package_DFN_QFN:QFN-64-1EP_9x9mm_P0.5mm_EP6x6mm`
- 3D model: QFN-64-EP(9x9) (KiCad packages3D, STEP)
- 3D model files: `avr128db64t-e-etched.step` / `avr128db64t-e-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `avr128db64t-e.step` / `avr128db64t-e.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Microchip Tech datasheet](docs/avr128db64t-e-datasheet.pdf) (660 pp, sha256 `9a87cbce668ce806`, retrieved 2026-10-30, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).
[Datasheet PDF](docs/avr128db64t-e-datasheet.pdf)