ATmega644P Automotive Atmel Corporation, ATmega644P Automotive Datasheet - Page 351
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ATmega644P Automotive
Manufacturer Part Number
ATmega644P Automotive
Description
Manufacturer
Atmel Corporation
Specifications of ATmega644P Automotive
Flash (kbytes)
64 Kbytes
Pin Count
44
Max. Operating Frequency
16 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 125
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 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
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7674F–AVR–09/09
Figure 27-25. Calibrated 8 MHz RC Oscillator Frequency vs. Temperature
Figure 27-26. Calibrated 8 MHz RC Oscillator Frequency vs. OSCCAL Value - Vcc = 5V
16
14
12
10
8.3
8.2
8.1
7.9
7.8
7.7
8
6
4
2
0
8
-40
0
16
-30
CALIBRATED 8 MHz RC OSCILLATOR FREQUENCY vs. TEMPERATURE
CALIBRATED 8MHz RC OSCILLATOR FREQUENCY vs. OSCCAL VALUE
-20
32
-10
48
64
0
10
80
20
96
30
112
OSCCAL (X1)
Temperature
40
128
50
144
ATmega164P/324P/644P
60
160
70
176
80
192
90
208
100
224
110
240
120
125
85
25
-45
351
5.5
5
4.5
3.3
3
2.7
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