ATMEGA644P-20MQ Atmel, ATMEGA644P-20MQ Datasheet - Page 274
ATMEGA644P-20MQ
Manufacturer Part Number
ATMEGA644P-20MQ
Description
MCU AVR 64K FLASH 20MHZ 44-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA164P-20AU.pdf
(439 pages)
Specifications of ATMEGA644P-20MQ
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)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-VQFN Exposed Pad
For Use With
ATSTK600 - DEV KIT FOR AVR/AVR32
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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22.7
8011O–AVR–07/10
Boundary-scan Description Language Files
Table 22-1.
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
ATmega164P/324P/644P.
Bit Number
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
ATmega164P/324P/644P 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
ATmega164P/324P/644P
Module
Port A
274
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