ATMEGA88PA-AU

@@ -0,0 +1,79 @@+# ATMEGA88PA-AU++**Microchip** · Microcontrollers (MCU/MPU/SOC) · TQFP-32(7x7)++ATMEGA88PA-AU from Microchip, in a TQFP-32(7x7). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | PD3/PCINT19/OC2B/INT1 | bidirectional | Port D bit 3. Alt: external interrupt INT1, Timer/Counter2 compare match B output OC2B, pin-change interrupt PCINT19. |+| 2 | PD4/PCINT20/XCK/T0 | bidirectional | Port D bit 4. Alt: USART external clock XCK, Timer/Counter0 external counter input T0, pin-change interrupt PCINT20. |+| 3 | GND | power_in | Digital ground. |+| 4 | VCC | power_in | Digital supply voltage, 1.8-5.5 V. |+| 5 | GND | power_in | Digital ground. |+| 6 | VCC | power_in | Digital supply voltage, 1.8-5.5 V. |+| 7 | PB6/PCINT6/XTAL1/TOSC1 | bidirectional | Port B bit 6. Alt: crystal oscillator input XTAL1 or 32 kHz Timer2 oscillator input TOSC1, pin-change interrupt PCINT6. Function selected by CKSEL/AS2 fuses. |+| 8 | PB7/PCINT7/XTAL2/TOSC2 | bidirectional | Port B bit 7. Alt: crystal oscillator output XTAL2 or 32 kHz Timer2 oscillator output TOSC2, pin-change interrupt PCINT7. |+| 9 | PD5/PCINT21/OC0B/T1 | bidirectional | Port D bit 5. Alt: Timer/Counter0 compare match B output OC0B, Timer/Counter1 external counter input T1, pin-change interrupt PCINT21. |+| 10 | PD6/PCINT22/OC0A/AIN0 | bidirectional | Port D bit 6. Alt: Timer/Counter0 compare match A output OC0A, analog comparator positive input AIN0, pin-change interrupt PCINT22. |+| 11 | PD7/PCINT23/AIN1 | bidirectional | Port D bit 7. Alt: analog comparator negative input AIN1, pin-change interrupt PCINT23. |+| 12 | PB0/PCINT0/CLKO/ICP1 | bidirectional | Port B bit 0. Alt: divided system clock output CLKO, Timer/Counter1 input capture ICP1, pin-change interrupt PCINT0. |+| 13 | PB1/PCINT1/OC1A | bidirectional | Port B bit 1. Alt: Timer/Counter1 compare match A output OC1A, pin-change interrupt PCINT1. |+| 14 | PB2/PCINT2/SS/OC1B | bidirectional | Port B bit 2. Alt: SPI slave-select SS, Timer/Counter1 compare match B output OC1B, pin-change interrupt PCINT2. |+| 15 | PB3/PCINT3/OC2A/MOSI | bidirectional | Port B bit 3. Alt: SPI master-out/slave-in MOSI, Timer/Counter2 compare match A output OC2A, pin-change interrupt PCINT3. |+| 16 | PB4/PCINT4/MISO | bidirectional | Port B bit 4. Alt: SPI master-in/slave-out MISO, pin-change interrupt PCINT4. |+| 17 | PB5/SCK/PCINT5 | bidirectional | Port B bit 5. Alt: SPI serial clock SCK, pin-change interrupt PCINT5. |+| 18 | AVCC | power_in | Analog supply pin for the A/D converter, PC3:0 and ADC7:6. Must be connected to VCC (through an LC filter when ADC is used). |+| 19 | ADC6 | input | Analog input channel 6 to the 10-bit A/D converter. Available only on TQFP and QFN/MLF packages; powered from the analog supply. |+| 20 | AREF | passive | Analog reference input for the A/D converter. Decouple to AGND with 100 nF. |+| 21 | GND | power_in | Analog/digital ground (shared). |+| 22 | ADC7 | input | Analog input channel 7 to the 10-bit A/D converter. Available only on TQFP and QFN/MLF packages; powered from the analog supply. |+| 23 | PC0/ADC0/PCINT8 | bidirectional | Port C bit 0. Alt: A/D converter channel 0 input, pin-change interrupt PCINT8. |+| 24 | PC1/ADC1/PCINT9 | bidirectional | Port C bit 1. Alt: A/D converter channel 1 input, pin-change interrupt PCINT9. |+| 25 | PC2/ADC2/PCINT10 | bidirectional | Port C bit 2. Alt: A/D converter channel 2 input, pin-change interrupt PCINT10. |+| 26 | PC3/ADC3/PCINT11 | bidirectional | Port C bit 3. Alt: A/D converter channel 3 input, pin-change interrupt PCINT11. |+| 27 | PC4/ADC4/SDA/PCINT12 | bidirectional | Port C bit 4. Alt: TWI (I2C) serial data SDA, A/D converter channel 4 input, pin-change interrupt PCINT12. Open-drain when TWI enabled. |+| 28 | PC5/ADC5/SCL/PCINT13 | bidirectional | Port C bit 5. Alt: TWI (I2C) serial clock SCL, A/D converter channel 5 input, pin-change interrupt PCINT13. Open-drain when TWI enabled. |+| 29 | PC6/RESET/PCINT14 | input | Active-low reset input when RSTDISBL fuse is unprogrammed (default). A low level longer than the minimum pulse length generates a reset. If RSTDISBL is programmed, PC6 becomes a general-purpose I/O pin (with different electrical characteristics from other Port C pins). |+| 30 | PD0/RXD/PCINT16 | bidirectional | Port D bit 0. Alt: USART receive data input RXD, pin-change interrupt PCINT16. |+| 31 | PD1/TXD/PCINT17 | bidirectional | Port D bit 1. Alt: USART transmit data output TXD, pin-change interrupt PCINT17. |+| 32 | PD2/INT0/PCINT18 | bidirectional | Port D bit 2. Alt: external interrupt INT0, pin-change interrupt PCINT18. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Microchip |+| Package | TQFP-32(7x7) |+| Category | MCU |+| Pins | 32 |++## Ordering variants++- `ATMEGA88PA-AU`+- `ATMEGA88PA-AUR`+- `ATMEGA88PA-AUMU`+- `ATMEGA88PA-AUMUR`+- `ATMEGA88PA-AUMMH`+- `ATMEGA88PA-AUMMHR`+- `ATMEGA88PA-AUPU`+- `ATMEGA88PA-AUCU`+- `ATMEGA88PA-AUCCU`++## CAD (KiCad official)++- Symbol: `ATMEGA88PA-AU`+- Footprint: `Package_QFP:TQFP-32_7x7mm_P0.8mm`+- 3D model: TQFP-32(7x7) (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Microchip datasheet](docs/atmega88pa-au-datasheet.pdf) (31 pp, sha256 `194fdd0f35c63d3b`, retrieved 2026-08-17, tier: manufacturer)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/atmega88pa-au-datasheet.pdf)

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