ATmega644P Atmel Corporation, ATmega644P Datasheet - Page 358

• Manufacturer Part Number: ATmega644P
• Manufacturer: Atmel Corporation

Specifications of ATmega644P

• Flash (kbytes): 64 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 32
• Ext Interrupts: 32
• Usb Speed: No
• Usb Interface: No
• Spi: 3
• Twi (i2c): 1
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 4
• Eeprom (bytes): 2048
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 6
• Input Capture Channels: 1
• Pwm Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

26.1.12
8011O–AVR–07/10
Current Consumption of Peripheral Units
Figure 26-38. Calibrated 8 MHz RC Oscillator Frequency vs. OSCCAL Value.
Figure 26-39. ADC Current vs. V
400
350
300
250
200
150
100
16
14
12
10
50
8
6
4
2
0
0
1.5
0
16
32
2
48
2.5
64
CC
80
(AREF = AV
96
3
112
OSCCAL (X1)
V
CC
128
3.5
(V)
CC
ATmega164P/324P/644P
144
).
160
4
176
192
4.5
208
224
5
240
5.5
-40°C
-40°C
85°C
25°C
85°C
25°C
358