ATMEGA644A-AUR Atmel, ATMEGA644A-AUR Datasheet - Page 31
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ATMEGA644A-AUR
Manufacturer Part Number
ATMEGA644A-AUR
Description
IC MCU AVR 64K FLASH 44TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA644A-AUR
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
11. Datasheet Revision History
11.1
8272AS–AVR–01/10
Rev. 8272A - 01/10
Please note that the referring page numbers in this section are referred to this document. The
referring revision in this section are referring to the document revision.
164A/164PA/324A/324PA/644A/644PA/1284/1284P
1.
2.
Initial revision (Based on the ATmega164PA/324PA/644PA/1284P datasheet 8252G-AVR-11/09
and on the ATmega644 datasheet 2593N-AVR-09/09).
Changes done:
– Non-picoPower devices added: ATmega164A/324A/644A/1284
– Updated
– Updated
– Updated
– Updated
– Updated
– Updated
– Added
– Added
– Added
– Added
– Added
– Added
– Added
– Added
– Added
– Added
”DC Characteristics” on page 327
”ATmega164A Typical Characteristics” on page 343
”ATmega324A Typical Characteristics” on page 393
”ATmega644A Typical Characteristics” on page 443
”ATmega1284 Typical Characteristics” on page 493
”Ordering Information” on page 550
”Errata for ATmega164A” on page 563
”Errata for ATmega324A” on page 563
”Errata for ATmega644PA” on page 563
”Errata for ATmega1284” on page 563
Table 2-1 on page 6
Table 9-1 on page 43
”Sleep Modes” on page 43
”Register Description” on page 68
”USART” on page 172
”Signature Bytes” on page 298
and
and
”USART in SPI Mode” on page 199
and
”BOD Disable
for non-picoPower devices.
”Page Size” on page 298
(1)
” on page 44
31