ATMEGA644A-PU Atmel, ATMEGA644A-PU Datasheet - Page 483

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 28-264.ATmega644PA: Reset Pull-up Resistor Current vs. Reset Pin Voltage
Figure 28-265.ATmega644PA: Reset Pull-up Resistor Current vs. Reset Pin Voltage
164A/164PA/324A/324PA/644A/644PA/1284/1284P
120
100
80
60
40
20
60
50
40
30
20
10
0
0
0
0
(V
(V
CC
CC
= 2.7V).
= 5V).
0.5
1
1
2
V
V
RESET
RESET
1.5
(V)
(V)
3
2
4
2.5
3
5
-40 °C
25 °C
85 °C
-40 °C
25 °C
85 °C
483

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