ATmega645P Atmel Corporation, ATmega645P Datasheet - Page 673
ATmega645P
Manufacturer Part Number
ATmega645P
Description
Manufacturer
Atmel Corporation
Specifications of ATmega645P
Flash (kbytes)
64 Kbytes
Pin Count
64
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
54
Ext Interrupts
17
Usb Speed
No
Usb Interface
No
Spi
2
Twi (i2c)
1
Uart
1
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
4
Input Capture Channels
1
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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8285D–AVR–06/11
ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P
10 Power Management and Sleep Modes ................................................. 39
11 System Control and Reset .................................................................... 46
12 Interrupts ................................................................................................ 55
13 External Interrupts ................................................................................. 62
9.3Default Clock Source ...............................................................................................31
9.4Calibrated Internal RC Oscillator .............................................................................31
9.5Crystal Oscillator .....................................................................................................32
9.6Low-frequency Crystal Oscillator .............................................................................33
9.7External Clock .........................................................................................................35
9.8Timer/Counter Oscillator .........................................................................................36
9.9Clock Output Buffer .................................................................................................36
9.10System Clock Prescaler ........................................................................................36
9.11Register Description ..............................................................................................37
10.1Overview ...............................................................................................................39
10.2Sleep Modes .........................................................................................................39
10.3BOD Disable
10.4Idle Mode ...............................................................................................................40
10.5ADC Noise Reduction Mode .................................................................................40
10.6Power-down Mode ................................................................................................40
10.7Power-save Mode .................................................................................................41
10.8Standby Mode .......................................................................................................41
10.9Power Reduction Register .....................................................................................41
10.10Minimizing Power Consumption ..........................................................................41
10.11Register Description ............................................................................................44
11.1Resetting the AVR .................................................................................................46
11.2Reset Sources .......................................................................................................46
11.3Internal Voltage Reference ....................................................................................50
11.4Watchdog Timer ....................................................................................................50
11.5Register Description ..............................................................................................53
12.1Interrupt Vectors ....................................................................................................55
12.2Moving Interrupts Between Application and Boot Space ......................................60
12.3Register Description ..............................................................................................61
13.1Pin Change Interrupt Timing .................................................................................62
13.2Register Description ..............................................................................................64
(1)
.......................................................................................................39
ii
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