ATMEGA644P-A15MZ Atmel, ATMEGA644P-A15MZ Datasheet - Page 2

• Manufacturer Part Number: ATMEGA644P-A15MZ
• Description: MCU AVR 64KB FLASH 16MHZ 44QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA644P-A15MZ

• Package / Case: 44-VQFN Exposed Pad
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Speed: 16MHz
• Number Of I /o: 32
• Eeprom Size: 2K x 8
• Core Processor: AVR
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Program Memory Size: 64KB (64K x 8)
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Connectivity: I²C, SPI, UART/USART
• Core Size: 8-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1. Pin Configurations
2
ATmega164P/324P/644P
Figure 1-1.
Note:
(PCINT/RXD1/26/INT0) PD2
(PCINT24/RXD0) PD0
(PCINT25/TXD0) PD1
(PCINT13/MOSI) PB5
(PCINT14/MISO) PB6
(PCINT15/SCK) PB7
The large center pad underneath the QFN/MLF package should be soldered to ground on the
board to ensure good mechanical stability.
Pinout ATmega164P/324P/644P
RESET
XTAL2
XTAL1
GND
VCC
TQFP/QFN/MLF
PA4 (ADC4/PCINT4)
PA5 (ADC5/PCINT5)
PA6 (ADC6/PCINT6)
PA7 (ADC7/PCINT7)
AREF
GND
AVCC
PC7 (TOSC2/PCINT23)
PC6 (TOSC1/PCINT22)
PC5 (TDI/PCINT21)
PC4 (TDO/PCINT20)
7674F–AVR–09/09