ATMEGA644A-PU Atmel, ATMEGA644A-PU Datasheet - Page 275
![IC MCU AVR 64K FLASH 40PDIP](/photos/6/70/67049/453-40-dip_sml.jpg)
ATMEGA644A-PU
Manufacturer Part Number
ATMEGA644A-PU
Description
IC MCU AVR 64K FLASH 40PDIP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA644A-PU
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
40-DIP (0.600", 15.24mm)
Processor Series
ATmega
Core
AVR
Data Bus Width
8 bit
Data Ram Size
4 KB
Interface Type
JTAG, TWI, SPI, USART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
32
Number Of Timers
3
Operating Supply Voltage
3.3 V
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
Minimum Operating Temperature
- 40 C
Operating Temperature Range
- 40 C to + 85 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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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
275
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