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ATMEGA88A-AUR
Public Made by Adomby adom
Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), TQFP-32(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownATMEGA88A-AUR
Microchip Tech · Microcontroller Units (MCUs/MPUs/SOCs) · TQFP-32(7x7)
ATMEGA88A-AUR from Microchip Tech, in a TQFP-32(7x7). 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 | PD3 | bidirectional | Port D bit 3, bidirectional I/O with internal pull-up; alternate functions INT1, OC2B and PCINT19. |
| 2 | PD4 | bidirectional | Port D bit 4, bidirectional I/O with internal pull-up; alternate functions XCK, T0 and PCINT20. |
| 3 | GND | power_in | Ground. |
| 4 | VCC | power_in | Digital supply voltage. |
| 5 | GND | power_in | Ground. |
| 6 | VCC | power_in | Digital supply voltage. |
| 7 | PB6 | bidirectional | Port B bit 6, I/O with pull-up; depending on clock fuse settings it is XTAL1 input to the inverting oscillator amplifier, or TOSC1 for Timer/Counter2; also PCINT6. |
| 8 | PB7 | bidirectional | Port B bit 7, I/O with pull-up; depending on clock fuse settings it is XTAL2 output of the inverting oscillator amplifier, or TOSC2 for Timer/Counter2; also PCINT7. |
| 9 | PD5 | bidirectional | Port D bit 5, bidirectional I/O with internal pull-up; alternate functions T1, OC0B and PCINT21. |
| 10 | PD6 | bidirectional | Port D bit 6, bidirectional I/O with internal pull-up; alternate functions AIN0, OC0A and PCINT22. |
| 11 | PD7 | bidirectional | Port D bit 7, bidirectional I/O with internal pull-up; alternate functions AIN1 and PCINT23. |
| 12 | PB0 | bidirectional | Port B bit 0, bidirectional I/O with internal pull-up; alternate functions ICP1, CLKO and PCINT0. |
| 13 | PB1 | bidirectional | Port B bit 1, bidirectional I/O with internal pull-up; alternate functions OC1A and PCINT1. |
| 14 | PB2 | bidirectional | Port B bit 2, bidirectional I/O with internal pull-up; alternate functions SS, OC1B and PCINT2. |
| 15 | PB3 | bidirectional | Port B bit 3, bidirectional I/O with internal pull-up; alternate functions MOSI, OC2A and PCINT3. |
| 16 | PB4 | bidirectional | Port B bit 4, bidirectional I/O with internal pull-up; alternate functions MISO and PCINT4. |
| 17 | PB5 | bidirectional | Port B bit 5, bidirectional I/O with internal pull-up; alternate functions SCK and PCINT5. |
| 18 | AVCC | power_in | Supply voltage for the A/D converter, PC3:0 and ADC7:6; must be connected to VCC even if the ADC is unused, through a low-pass filter if the ADC is used. |
| 19 | ADC6 | input | Analog input channel 6 of the 10-bit A/D converter (TQFP and VQFN only), powered from the analog supply. |
| 20 | AREF | input | Analog reference pin for the A/D converter. |
| 21 | GND | power_in | Ground. |
| 22 | ADC7 | input | Analog input channel 7 of the 10-bit A/D converter (TQFP and VQFN only), powered from the analog supply. |
| 23 | PC0 | bidirectional | Port C bit 0, bidirectional I/O with internal pull-up; ADC0 input (analog power) and PCINT8. |
| 24 | PC1 | bidirectional | Port C bit 1, bidirectional I/O with internal pull-up; ADC1 input (analog power) and PCINT9. |
| 25 | PC2 | bidirectional | Port C bit 2, bidirectional I/O with internal pull-up; ADC2 input (analog power) and PCINT10. |
| 26 | PC3 | bidirectional | Port C bit 3, bidirectional I/O with internal pull-up; ADC3 input (analog power) and PCINT11. |
| 27 | PC4 | bidirectional | Port C bit 4, bidirectional I/O with internal pull-up; ADC4 input (digital power), SDA two-wire data and PCINT12. |
| 28 | PC5 | bidirectional | Port C bit 5, bidirectional I/O with internal pull-up; ADC5 input (digital power), SCL two-wire clock and PCINT13. |
| 29 | PC6/RESET | bidirectional | Reset input when RSTDISBL fuse is unprogrammed (a low level longer than the minimum pulse length generates a Reset), otherwise an I/O pin with electrical characteristics differing from other Port C pins; also PCINT14. |
| 30 | PD0 | bidirectional | Port D bit 0, bidirectional I/O with internal pull-up; alternate functions RXD and PCINT16. |
| 31 | PD1 | bidirectional | Port D bit 1, bidirectional I/O with internal pull-up; alternate functions TXD and PCINT17. |
| 32 | PD2 | bidirectional | Port D bit 2, bidirectional I/O with internal pull-up; alternate functions INT0 and PCINT18. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | TQFP-32(7x7) |
| Category | Single Chip Microcomputer/Microcontroller |
| Pins | 32 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating Temperature (absolute maximum) | -55 | 125 | °C | 308 | |||
| Storage Temperature | -65 | 150 | °C | 308 | |||
| Voltage on any Pin except RESET with respect to Ground | -0.5 | 5.5 | V | -0.5V to VCC+0.5V (max printed as VCC+0.5V) | 308 | ||
| Voltage on RESET with respect to Ground | -0.5 | 13 | V | 308 | |||
| DC Current per I/O Pin | 40 | mA | 308 | ||||
| DC Current VCC and GND Pins | 200 | mA | 308 | ||||
| Supply voltage range | VCC | 1.8 | 5.5 | V | TA = -40C to 85C | 309 | |
| Power Supply Current Active | ICC | 0.2 | 0.55 | mA | Active 1MHz, VCC = 2V | 309 | |
| Power Supply Current Active | ICC | 1.2 | 3.5 | mA | Active 4MHz, VCC = 3V | 309 | |
| Power Supply Current Active | ICC | 4.1 | 12 | mA | Active 8MHz, VCC = 5V | 309 | |
| Power Supply Current Idle | ICC | 0.03 | 0.5 | mA | Idle 1MHz, VCC = 2V | 309 | |
| Power Supply Current Idle | ICC | 0.18 | 1.5 | mA | Idle 4MHz, VCC = 3V | 309 | |
| Power Supply Current Idle | ICC | 0.8 | 5.5 | mA | Idle 8MHz, VCC = 5V | 309 | |
| Power Supply Current Power-down mode | ICC | 3.9 | 15 | µA | WDT enabled, VCC = 3V | 309 | |
| Power Supply Current Power-down mode | ICC | 0.1 | 2 | µA | WDT disabled, VCC = 3V | 309 | |
| Power Supply Current Power-save mode | ICC | 0.8 | µA | 32kHz TOSC enabled, VCC = 1.8V | 309 | ||
| Power Supply Current Power-save mode | ICC | 0.9 | µA | 32kHz TOSC enabled, VCC = 3V | 309 |
CAD (KiCad official)
- Symbol:
ATMEGA88A-AUR - Footprint:
Package_QFP:TQFP-32_7x7mm_P0.8mm - 3D model: TQFP-32(7x7) (KiCad packages3D, STEP)
- 3D model files:
atmega88a-aur-etched.step/atmega88a-aur-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);atmega88a-aur.step/atmega88a-aur.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (653 pp, sha256
b9b9d83cda56a95d, retrieved 2026-11-02, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-opus-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).