ATmega644P Automotive Atmel Corporation, ATmega644P Automotive Datasheet - Page 205
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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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7701E–AVR–02/11
Figure 23-34. Calibrated 8MHz RC oscillator Frequency vs. Temperature
Figure 23-35. Calibrated 8MHz RC Oscillator Frequency vs, OSCCAL Value
8.4
8.3
8.2
8.1
7.9
7.8
7.7
16
14
12
10
8
6
4
2
0
8
-40
0
16
-30
CALIBRATED 8.0MHz RC OS CILLATOR FREQUENCY vs . OS CCAL VALUE
CALIBRATED 8.0MHz RC OS CILLATOR FREQUENCY vs . TEMP ERATURE
-20
32
-10
48
Atmel ATtiny24/44/84 [Preliminary]
64
0
10
80
20
96
112
30
OSCCAL (X1)
Temperature
40
128
(Vcc=3V)
144
50
60
160
70
176
80
192
90
208
100 110 120
224
240
125 ˚C
-40 ˚C
85 ˚C
5.0 V
3.0 V
25 ˚C
205
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