ATMEGA644A-PU Atmel, ATMEGA644A-PU Datasheet - Page 469

IC MCU AVR 64K FLASH 40PDIP

ATMEGA644A-PU

Manufacturer Part Number
ATMEGA644A-PU
Description
IC MCU AVR 64K FLASH 40PDIP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheets

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
8272A–AVR–01/10
Figure 28-239.ATmega644A: AREF External Reference Current vs. V
Figure 28-240.ATmega644A: Brownout Detector Current vs. V
164A/164PA/324A/324PA/644A/644PA/1284/1284P
200
160
120
80
40
24
22
20
18
16
14
12
0
1.5
2
2
2.5
2.5
3
3
3.5
V
V
CC
CC
3.5
(V)
(V)
4
4
4.5
CC
4.5
CC
5
5
5.5
5.5
-40 °C
-40 °C
25 °C
85 °C
25 °C
85 °C
469

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