ATmega32 Atmel Corporation, ATmega32 Datasheet - Page 64

• Manufacturer Part Number: ATmega32
• Manufacturer: Atmel Corporation

Specifications of ATmega32

• Flash (kbytes): 32 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: 3
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• 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): 2
• Eeprom (bytes): 1024
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• 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: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

Register
Description for I/O
Ports
Port A Data Register –
PORTA
Port A Data Direction
Register – DDRA
Port A Input Pins
Address – PINA
Port B Data Register –
PORTB
Port B Data Direction
Register – DDRB
2503Q–AVR–02/11
Table 33. Overriding Signals for Alternate Functions in PD3..PD0
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Signal Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
PORTA7
PORTB7
PINA7
DDA7
DDB7
R/W
R/W
R/W
R/W
N/A
7
0
7
0
7
R
7
0
7
0
PD3/INT1
0
0
0
0
0
0
INT1 ENABLE
1
INT1 INPUT
–
PORTA6
PORTB6
PINA6
DDA6
DDB6
R/W
R/W
R/W
R/W
N/A
6
0
6
0
6
R
6
0
6
0
PORTA5
PORTB5
PINA5
DDA5
DDB5
R/W
R/W
R/W
R/W
N/A
R
5
0
5
0
5
5
0
5
0
PD2/INT0
0
0
0
0
0
0
INT0 ENABLE
1
INT0 INPUT
–
PORTA4
PORTB4
PINA4
DDA4
DDB4
R/W
R/W
R/W
R/W
N/A
R
4
0
4
0
4
4
0
4
0
PORTA3
PORTB3
PINA3
DDA3
DDB3
R/W
R/W
R/W
R/W
N/A
R
3
0
3
0
3
3
0
3
0
PORTA2
PORTB2
PINA2
DDA2
DDB2
PD1/TXD
TXEN
0
TXEN
1
TXEN
TXD
0
0
–
–
R/W
R/W
R/W
R/W
N/A
R
2
0
2
0
2
2
0
2
0
PORTB1
PORTA1
PINA1
DDA1
DDB1
R/W
R/W
R/W
R/W
N/A
R
1
0
1
0
1
1
0
1
0
PD0/RXD
RXEN
PORTD0 • PUD
RXEN
0
0
0
0
0
RXD
–
ATmega32(L)
PORTB0
PORTA0
PINA0
DDA0
DDB0
R/W
R/W
R/W
R/W
N/A
R
0
0
0
0
0
0
0
0
0
PORTB
PORTA
DDRA
DDRB
PINA
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