ATmega645P Atmel Corporation, ATmega645P Datasheet - Page 79
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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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14.3.2
8285D–AVR–06/11
Alternate Functions of Port D
ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P
The Port D pins with alternate functions are shown in
Table 14-6.
The alternate pin configuration is as follows:
• INT0 – Port D, Bit 1
INT0, External Interrupt Source 0. The PD1 pin can serve as an external interrupt source to the
MCU.
• ICP1 – Port D, Bit 0
ICP1 – Input Capture pin1: The PD0 pin can act as an Input Capture pin for Timer/Counter1.
Table 14-7
5 on page
Table 14-7.
Signal Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
PTOE
DIEOE
DIEOV
DI
AIO
Port Pin
PD7
PD6
PD5
PD4
PD3
PD2
PD1
PD0
74.
relates the alternate functions of Port D to the overriding signals shown in
Alternate Function
–
–
–
–
–
–
INT0 (External Interrupt0 Input)
ICP1 (Timer/Counter1 Input Capture pin)
Port D Pins Alternate Functions
Overriding Signals for Alternate Functions in PD1:PD0
PD1/INT0
0
0
0
0
0
0
–
INT0 ENABLE
INT0 ENABLE
INT0 INPUT
–
Table
PD0/ICP1
0
0
0
0
0
0
–
0
0
ICP1 INPUT
–
14-6.
Figure 14-
79
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