ATMEGA644P-A15MZ Atmel, ATMEGA644P-A15MZ Datasheet - Page 345

• 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

27.3
7674F–AVR–09/09
Pin Pull-up
Figure 27-13. I/O Pin Pull-up Resistor Current vs. Input Voltage (Vcc = 5V)
Figure 27-14. Reset Pull-up Resistor Current vs. Reset Pin Voltage (Vcc = 5V)
160
140
120
100
120
100
-20
80
60
40
20
80
60
40
20
0
0
0
0
0.5
RESET PULL-UP RESISTOR CURRENT vs. RESET PIN VOLTAGE
1
I/O PIN PULL-UP RESISTOR CURRENT vs. INPUT VOLTAGE
1
1.5
2
2
V
V
RESET
Vcc = 5.0v
Vcc = 5.0v
OP
2.5
3
(V)
(V)
ATmega164P/324P/644P
3
4
3.5
4
5
4.5
6
5
125
85
25
-45
345
125
85
25
-45