ATMEGA644A-AU Atmel, ATMEGA644A-AU Datasheet - Page 275

• Manufacturer Part Number: ATMEGA644A-AU
• Description: IC MCU AVR 64K FLASH 44TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA644A-AU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

24.7
8272A–AVR–01/10
Boundary-scan Description Language Files
Table 24-1.
Boundary-scan Description Language (BSDL) files describe Boundary-scan capable devices in
a standard format used by automated test-generation software. The order and function of bits in
the Boundary-scan Data Register are included in this description. BSDL files are available for
ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P.
164A/164PA/324A/324PA/644A/644PA/1284/1284P
Bit Number
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P Boundary-scan
Order (Continued)
Signal Name
PA7.Control
PA6.Data
PA6.Control
PA5.Data
PA5.Control
PA4.Data
PA4.Control
PA3.Data
PA3.Control
PA2.Data
PA2.Control
PA1.Data
PA1.Control
PA0.Data
PA0.Control
Module
Port A
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