atmega2560-16au

@@ -0,0 +1,146 @@+# ATMEGA2560-16AU++**Microchip** · Microcontrollers (MCU/MPU/SOC) · TQFP-100(14x14)++ATMEGA2560-16AU from Microchip, in a TQFP-100(14x14). 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 | PG5/(OC0B) | bidirectional | Port G bit 5 (6-bit port with internal pull-ups). Alternate function: Timer/Counter0 Output Compare Match B output (OC0B). |+| 2 | PE0/(RXD0/PCINT8) | bidirectional | Port E bit 0. Alternate functions: USART0 Receive input (RXD0) and Pin Change Interrupt source 8 (PCINT8). |+| 3 | PE1/(TXD0) | bidirectional | Port E bit 1. Alternate function: USART0 Transmit output (TXD0). |+| 4 | PE2/(XCK0/AIN0) | bidirectional | Port E bit 2. Alternate functions: USART0 external clock (XCK0) and Analog Comparator positive input (AIN0). |+| 5 | PE3/(OC3A/AIN1) | bidirectional | Port E bit 3. Alternate functions: Timer/Counter3 Output Compare Match A (OC3A) and Analog Comparator negative input (AIN1). |+| 6 | PE4/(OC3B/INT4) | bidirectional | Port E bit 4. Alternate functions: Timer/Counter3 Output Compare Match B (OC3B) and External Interrupt 4 (INT4). |+| 7 | PE5/(OC3C/INT5) | bidirectional | Port E bit 5. Alternate functions: Timer/Counter3 Output Compare Match C (OC3C) and External Interrupt 5 (INT5). |+| 8 | PE6/(T3/INT6) | bidirectional | Port E bit 6. Alternate functions: Timer/Counter3 external counter input (T3) and External Interrupt 6 (INT6). |+| 9 | PE7/(CLKO/ICP3/INT7) | bidirectional | Port E bit 7. Alternate functions: divided system clock output (CLKO), Timer/Counter3 input capture (ICP3), and External Interrupt 7 (INT7). |+| 10 | VCC | power_in | Digital supply voltage. 4.5-5.5 V for the 16 MHz speed grade. Decouple with 100 nF close to the pin. |+| 11 | GND | power_in | Ground. |+| 12 | PH0/(RXD2) | bidirectional | Port H bit 0. Alternate function: USART2 Receive input (RXD2). |+| 13 | PH1/(TXD2) | bidirectional | Port H bit 1. Alternate function: USART2 Transmit output (TXD2). |+| 14 | PH2/(XCK2) | bidirectional | Port H bit 2. Alternate function: USART2 external clock (XCK2). |+| 15 | PH3/(OC4A) | bidirectional | Port H bit 3. Alternate function: Timer/Counter4 Output Compare Match A (OC4A). |+| 16 | PH4/(OC4B) | bidirectional | Port H bit 4. Alternate function: Timer/Counter4 Output Compare Match B (OC4B). |+| 17 | PH5/(OC4C) | bidirectional | Port H bit 5. Alternate function: Timer/Counter4 Output Compare Match C (OC4C). |+| 18 | PH6/(OC2B) | bidirectional | Port H bit 6. Alternate function: Timer/Counter2 Output Compare Match B (OC2B). |+| 19 | PB0/(SS/PCINT0) | bidirectional | Port B bit 0 (higher drive strength than other ports). Alternate functions: SPI Slave Select input (SS) and Pin Change Interrupt 0 (PCINT0). |+| 20 | PB1/(SCK/PCINT1) | bidirectional | Port B bit 1. Alternate functions: SPI serial clock (SCK) and Pin Change Interrupt 1 (PCINT1). |+| 21 | PB2/(MOSI/PCINT2) | bidirectional | Port B bit 2. Alternate functions: SPI Master-Out Slave-In (MOSI) and Pin Change Interrupt 2 (PCINT2). |+| 22 | PB3/(MISO/PCINT3) | bidirectional | Port B bit 3. Alternate functions: SPI Master-In Slave-Out (MISO) and Pin Change Interrupt 3 (PCINT3). |+| 23 | PB4/(OC2A/PCINT4) | bidirectional | Port B bit 4. Alternate functions: Timer/Counter2 Output Compare Match A (OC2A) and Pin Change Interrupt 4 (PCINT4). |+| 24 | PB5/(OC1A/PCINT5) | bidirectional | Port B bit 5. Alternate functions: Timer/Counter1 Output Compare Match A (OC1A) and Pin Change Interrupt 5 (PCINT5). |+| 25 | PB6/(OC1B/PCINT6) | bidirectional | Port B bit 6. Alternate functions: Timer/Counter1 Output Compare Match B (OC1B) and Pin Change Interrupt 6 (PCINT6). |+| 26 | PB7/(OC0A/OC1C/PCINT7) | bidirectional | Port B bit 7. Alternate functions: Timer/Counter0 Output Compare Match A (OC0A), Timer/Counter1 Output Compare Match C (OC1C), and Pin Change Interrupt 7 (PCINT7). |+| 27 | PH7/(T4) | bidirectional | Port H bit 7. Alternate function: Timer/Counter4 external counter input (T4). |+| 28 | PG3/(TOSC2) | bidirectional | Port G bit 3. Alternate function: Timer Oscillator pin 2 (TOSC2) when asynchronous Timer/Counter2 clocked from external 32.768 kHz crystal. |+| 29 | PG4/(TOSC1) | bidirectional | Port G bit 4. Alternate function: Timer Oscillator pin 1 (TOSC1) for asynchronous Timer/Counter2 crystal input. |+| 30 | RESET | input | Active-low reset input. A low level longer than the minimum pulse length (see “System and Reset Characteristics”, datasheet p.360) generates a reset even if the clock is not running. |+| 31 | VCC | power_in | Digital supply voltage (tie to same rail as other VCC pins). Decouple with 100 nF close to the pin. |+| 32 | GND | power_in | Ground. |+| 33 | XTAL2 | output | Output of the inverting crystal oscillator amplifier. Leave floating when using an external clock on XTAL1. |+| 34 | XTAL1 | input | Input to the inverting crystal oscillator amplifier and to the internal clock circuit. Drive with an external clock or connect a crystal between XTAL1 and XTAL2 with two load capacitors to ground. |+| 35 | PL0/(ICP4) | bidirectional | Port L bit 0. Alternate function: Timer/Counter4 input capture (ICP4). |+| 36 | PL1/(ICP5) | bidirectional | Port L bit 1. Alternate function: Timer/Counter5 input capture (ICP5). |+| 37 | PL2/(T5) | bidirectional | Port L bit 2. Alternate function: Timer/Counter5 external counter input (T5). |+| 38 | PL3/(OC5A) | bidirectional | Port L bit 3. Alternate function: Timer/Counter5 Output Compare Match A (OC5A). |+| 39 | PL4/(OC5B) | bidirectional | Port L bit 4. Alternate function: Timer/Counter5 Output Compare Match B (OC5B). |+| 40 | PL5/(OC5C) | bidirectional | Port L bit 5. Alternate function: Timer/Counter5 Output Compare Match C (OC5C). |+| 41 | PL6 | bidirectional | Port L bit 6 (general-purpose I/O with internal pull-up). |+| 42 | PL7 | bidirectional | Port L bit 7 (general-purpose I/O with internal pull-up). |+| 43 | PD0/(SCL/INT0) | bidirectional | Port D bit 0. Alternate functions: 2-wire (TWI/I2C) serial clock (SCL) and External Interrupt 0 (INT0). |+| 44 | PD1/(SDA/INT1) | bidirectional | Port D bit 1. Alternate functions: 2-wire (TWI/I2C) serial data (SDA) and External Interrupt 1 (INT1). |+| 45 | PD2/(RXD1/INT2) | bidirectional | Port D bit 2. Alternate functions: USART1 Receive input (RXD1) and External Interrupt 2 (INT2). |+| 46 | PD3/(TXD1/INT3) | bidirectional | Port D bit 3. Alternate functions: USART1 Transmit output (TXD1) and External Interrupt 3 (INT3). |+| 47 | PD4/(ICP1) | bidirectional | Port D bit 4. Alternate function: Timer/Counter1 input capture (ICP1). |+| 48 | PD5/(XCK1) | bidirectional | Port D bit 5. Alternate function: USART1 external clock (XCK1). |+| 49 | PD6/(T1) | bidirectional | Port D bit 6. Alternate function: Timer/Counter1 external counter input (T1). |+| 50 | PD7/(T0) | bidirectional | Port D bit 7. Alternate function: Timer/Counter0 external counter input (T0). |+| 51 | PG0/(WR) | bidirectional | Port G bit 0. Alternate function: External-memory-interface Write strobe (WR) when the XMEM interface is enabled. |+| 52 | PG1/(RD) | bidirectional | Port G bit 1. Alternate function: External-memory-interface Read strobe (RD) when the XMEM interface is enabled. |+| 53 | PC0/(A8) | bidirectional | Port C bit 0. Alternate function: External-memory-interface address line A8. |+| 54 | PC1/(A9) | bidirectional | Port C bit 1. Alternate function: External-memory-interface address line A9. |+| 55 | PC2/(A10) | bidirectional | Port C bit 2. Alternate function: External-memory-interface address line A10. |+| 56 | PC3/(A11) | bidirectional | Port C bit 3. Alternate function: External-memory-interface address line A11. |+| 57 | PC4/(A12) | bidirectional | Port C bit 4. Alternate function: External-memory-interface address line A12. |+| 58 | PC5/(A13) | bidirectional | Port C bit 5. Alternate function: External-memory-interface address line A13. |+| 59 | PC6/(A14) | bidirectional | Port C bit 6. Alternate function: External-memory-interface address line A14. |+| 60 | PC7/(A15) | bidirectional | Port C bit 7. Alternate function: External-memory-interface address line A15. |+| 61 | VCC | power_in | Digital supply voltage. Decouple with 100 nF close to the pin. |+| 62 | GND | power_in | Ground. |+| 63 | PJ0/(RXD3/PCINT9) | bidirectional | Port J bit 0. Alternate functions: USART3 Receive input (RXD3) and Pin Change Interrupt 9 (PCINT9). |+| 64 | PJ1/(TXD3/PCINT10) | bidirectional | Port J bit 1. Alternate functions: USART3 Transmit output (TXD3) and Pin Change Interrupt 10 (PCINT10). |+| 65 | PJ2/(XCK3/PCINT11) | bidirectional | Port J bit 2. Alternate functions: USART3 external clock (XCK3) and Pin Change Interrupt 11 (PCINT11). |+| 66 | PJ3/(PCINT12) | bidirectional | Port J bit 3. Alternate function: Pin Change Interrupt 12 (PCINT12). |+| 67 | PJ4/(PCINT13) | bidirectional | Port J bit 4. Alternate function: Pin Change Interrupt 13 (PCINT13). |+| 68 | PJ5/(PCINT14) | bidirectional | Port J bit 5. Alternate function: Pin Change Interrupt 14 (PCINT14). |+| 69 | PJ6/(PCINT15) | bidirectional | Port J bit 6. Alternate function: Pin Change Interrupt 15 (PCINT15). |+| 70 | PJ7 | bidirectional | Port J bit 7 (general-purpose I/O with internal pull-up). |+| 71 | VCC | power_in | Digital supply voltage. Decouple with 100 nF close to the pin. |+| 72 | GND | power_in | Ground. |+| 73 | PA7/(AD7) | bidirectional | Port A bit 7. Alternate function: multiplexed external-memory-interface Address/Data bit 7 (AD7). |+| 74 | PA6/(AD6) | bidirectional | Port A bit 6. Alternate function: multiplexed external-memory-interface Address/Data bit 6 (AD6). |+| 75 | PA5/(AD5) | bidirectional | Port A bit 5. Alternate function: multiplexed external-memory-interface Address/Data bit 5 (AD5). |+| 76 | PA4/(AD4) | bidirectional | Port A bit 4. Alternate function: multiplexed external-memory-interface Address/Data bit 4 (AD4). |+| 77 | PA3/(AD3) | bidirectional | Port A bit 3. Alternate function: multiplexed external-memory-interface Address/Data bit 3 (AD3). |+| 78 | PA2/(AD2) | bidirectional | Port A bit 2. Alternate function: multiplexed external-memory-interface Address/Data bit 2 (AD2). |+| 79 | PA1/(AD1) | bidirectional | Port A bit 1. Alternate function: multiplexed external-memory-interface Address/Data bit 1 (AD1). |+| 80 | PA0/(AD0) | bidirectional | Port A bit 0. Alternate function: multiplexed external-memory-interface Address/Data bit 0 (AD0). |+| 81 | PG2/(ALE) | bidirectional | Port G bit 2. Alternate function: External-memory-interface Address Latch Enable (ALE) when the XMEM interface is enabled. |+| 82 | PK7/(ADC15/PCINT23) | bidirectional | Port K bit 7 doubling as ADC channel 15 input; also Pin Change Interrupt 23 (PCINT23). Analog input range 0 V to AVCC (default), 10-bit resolution. |+| 83 | PK6/(ADC14/PCINT22) | bidirectional | Port K bit 6; ADC channel 14 input; Pin Change Interrupt 22 (PCINT22). Analog input range 0 V to AVCC (default), 10-bit resolution. |+| 84 | PK5/(ADC13/PCINT21) | bidirectional | Port K bit 5; ADC channel 13 input; Pin Change Interrupt 21 (PCINT21). Analog input range 0 V to AVCC (default), 10-bit resolution. |+| 85 | PK4/(ADC12/PCINT20) | bidirectional | Port K bit 4; ADC channel 12 input; Pin Change Interrupt 20 (PCINT20). Analog input range 0 V to AVCC (default), 10-bit resolution. |+| 86 | PK3/(ADC11/PCINT19) | bidirectional | Port K bit 3; ADC channel 11 input; Pin Change Interrupt 19 (PCINT19). Analog input range 0 V to AVCC (default), 10-bit resolution. |+| 87 | PK2/(ADC10/PCINT18) | bidirectional | Port K bit 2; ADC channel 10 input; Pin Change Interrupt 18 (PCINT18). Analog input range 0 V to AVCC (default), 10-bit resolution. |+| 88 | PK1/(ADC9/PCINT17) | bidirectional | Port K bit 1; ADC channel 9 input; Pin Change Interrupt 17 (PCINT17). Analog input range 0 V to AVCC (default), 10-bit resolution. |+| 89 | PK0/(ADC8/PCINT16) | bidirectional | Port K bit 0; ADC channel 8 input; Pin Change Interrupt 16 (PCINT16). Analog input range 0 V to AVCC (default), 10-bit resolution. |+| 90 | PF7/(ADC7/TDI) | bidirectional | Port F bit 7; ADC channel 7 analog input; also JTAG Test Data Input (TDI). Pull-up on TDI stays active during reset when JTAG is enabled. |+| 91 | PF6/(ADC6/TDO) | bidirectional | Port F bit 6; ADC channel 6 analog input; also JTAG Test Data Output (TDO). |+| 92 | PF5/(ADC5/TMS) | bidirectional | Port F bit 5; ADC channel 5 analog input; also JTAG Test Mode Select (TMS). Pull-up on TMS stays active during reset when JTAG is enabled. |+| 93 | PF4/(ADC4/TCK) | bidirectional | Port F bit 4; ADC channel 4 analog input; also JTAG Test Clock (TCK). Pull-up on TCK stays active during reset when JTAG is enabled. |+| 94 | PF3/(ADC3) | bidirectional | Port F bit 3; ADC channel 3 analog input. Digital GPIO when the ADC is not in use. |+| 95 | PF2/(ADC2) | bidirectional | Port F bit 2; ADC channel 2 analog input. Digital GPIO when the ADC is not in use. |+| 96 | PF1/(ADC1) | bidirectional | Port F bit 1; ADC channel 1 analog input. Digital GPIO when the ADC is not in use. |+| 97 | PF0/(ADC0) | bidirectional | Port F bit 0; ADC channel 0 analog input. Digital GPIO when the ADC is not in use. |+| 98 | AREF | passive | Analog reference voltage input for the A/D converter. Decouple to GND with 100 nF; may be tied to AVCC via an internal switch, or driven by an internal 1.1 V / 2.56 V bandgap depending on ADMUX[REFS1:0]. |+| 99 | GND | power_in | Ground (return for AVCC and AREF; connect to the common ground plane at the pin). |+| 100 | AVCC | power_in | Analog supply for Port F and the A/D Converter. Must be tied to VCC even if the ADC is not used; when the ADC is used, connect via an LC/RC low-pass filter to VCC. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Microchip |+| Package | TQFP-100(14x14) |+| Category | MCU |+| Pins | 100 |++## Ordering variants++- `ATmega2560-16AU`+- `ATmega2560-16AUR`+- `ATMEGA2560-16AUATmega2560-16CU`+- `ATMEGA2560-16AUATmega2560-16CUR`+- `ATMEGA2560-16AUATmega2560V-8CU`+- `ATMEGA2560-16AUATmega2560V-8CUR`+- `ATMEGA2560-16AUATmega2560V-8AU`+- `ATMEGA2560-16AUATmega2560V-8AUR`++## CAD (KiCad official)++- Symbol: `ATMEGA2560-16AU`+- Footprint: `Package_QFP:TQFP-100_14x14mm_P0.5mm`+- 3D model: TQFP-100(14x14) (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Microchip datasheet](docs/atmega2560-16au-datasheet.pdf) (None pp, sha256 `8ee216d27cb2f273`, 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/atmega2560-16au-datasheet.pdf)