ATmega645P Atmel Corporation, ATmega645P Datasheet - Page 85
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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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14.3.6
8285D–AVR–06/11
Alternate Functions of Port H
ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P
Table 14-14
shown in
Table 14-15. Overriding Signals for Alternate Functions in PG4:PG3
Port H is only present in ATmega3250A/3250PA/6450A/6450P. The alternate pin configuration
is as follows:
Table 14-16. Port H Pins Alternate Functions
The alternate pin configuration is as follows:
• PCINT23 – Port H, Bit 7
PCINT23, Pin Change Interrupt Source 23: The PH7 pin can serve as an external interrupt
source.
• PCINT22 – Port H, Bit 6
PCINT22, Pin Change Interrupt Source 22: The PH6 pin can serve as an external interrupt
source.
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
PTOE
DIEOE
DIEOV
DI
AIO
Port Pin
PH7
PH6
PH5
PH4
PH3
PH2
PH1
PH0
Figure 14-5 on page
PG4/T0
0
0
0
1
0
0
–
0
0
T0 INPUT
–
and
Alternate Function
PCINT23(Pin Change Interrupt23)
PCINT22 (Pin Change Interrupt22)
PCINT21(Pin Change Interrupt21)
PCINT20(Pin Change Interrupt20)
PCINT19 (Pin Change Interrupt19)
PCINT18(Pin Change Interrupt18)
PCINT17(Pin Change Interrupt17)
PCINT16(Pin Change Interrupt16)
Table 14-15
relates the alternate functions of Port G to the overriding signals
74.
PG3/T1/
0
0
0
1
0
0
–
0
0
T1 INPUT
–
85
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