ATMEGA644P-20MQ Atmel, ATMEGA644P-20MQ Datasheet - Page 376
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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- Download datasheet (10Mb)
26.2.9
8011O–AVR–07/10
Pin Threshold and Hysteresis
Figure 26-72. I/O Pin Input Threshold vs. V
Figure 26-73. I/O Pin Input Threshold vs. V
3.5
2.5
1.5
0.5
2.5
1.5
0.5
3
2
1
0
2
1
0
1.5
1.5
2
2
2.5
2.5
3
3
CC
CC
V
V
(V
CC
(V
CC
3.5
3.5
(V)
(V)
IH
IL
ATmega164P/324P/644P
, I/O Pin Read as ‘0’).
, I/O Pin Read as ‘1’).
4
4
4.5
4.5
5
5
5.5
5.5
-40°C
-40°C
85°C
25°C
25°C
85°C
376
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