ATMEGA644P-A15MZ Atmel, ATMEGA644P-A15MZ Datasheet - Page 348

• Manufacturer Part Number: ATMEGA644P-A15MZ
• Description: MCU AVR 64KB FLASH 16MHZ 44QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA644P-A15MZ

• Package / Case: 44-VQFN Exposed Pad
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Speed: 16MHz
• Number Of I /o: 32
• Eeprom Size: 2K x 8
• Core Processor: AVR
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Program Memory Size: 64KB (64K x 8)
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Connectivity: I²C, SPI, UART/USART
• Core Size: 8-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

27.5
348
Threshold and Hysteresis
ATmega164P/324P/644P
Figure 27-19. I/O Input Threshold Voltage vs. Vcc (V
Figure 27-20. I/O Input Threshold Voltage vs. Vcc (V
3.5
2.5
1.5
0.5
3.5
2.5
1.5
0.5
3
2
1
0
3
2
1
0
1.5
1.5
2
2
2.5
2.5
I/O PIN INPUT THRESHOLD VOLTAGE vs. V
I/O PIN INPUT THRESHOLD VOLTAGE vs. V
3
3
VIH, IO PIN READ AS '1'
VIL, IO PIN READ AS '0'
3.5
3.5
V
V
CC
CC
(V)
(V)
4
4
IH
IL
, I/O Pin Read as “0”)
, I/O Pin Read as “1”)
4.5
4.5
CC
5
CC
5
5.5
5.5
6
6
7674F–AVR–09/09
125
85
25
-45
125
85
25
-45