ATMEGA8535-16AI Atmel, ATMEGA8535-16AI Datasheet - Page 66

• Manufacturer Part Number: ATMEGA8535-16AI
• Description: IC AVR MCU 8K 16MHZ IND 44-TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA8535-16AI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 8KB (4K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: 2-Wire, SPI, USART
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 2 x 8 bit
• Operating Supply Voltage: 4.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 2 bit
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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
66
ATmega8535(L)
Table 34. 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
N/A
R/W
R
7
0
7
0
7
7
0
7
0
PD3/INT1
0
0
0
0
0
0
INT1 ENABLE
1
INT1 INPUT
–
PORTB6
PORTA6
PINA6
DDB6
DDA6
R/W
R/W
R/W
N/A
R/W
R
6
0
6
0
6
6
0
6
0
PORTB5
PORTA5
PINA5
DDA5
DDB5
R/W
R/W
R/W
R/W
N/A
5
0
5
0
5
R
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
DDB3
DDA3
R/W
R/W
R/W
N/A
R/W
R
3
0
3
0
3
3
0
3
0
PORTB2
PORTA2
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
PORTA1
PORTB1
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
–
PORTA0
PORTB0
PINA0
DDA0
DDB0
R/W
R/W
R/W
R/W
N/A
R
2502K–AVR–10/06
0
0
0
0
0
0
0
0
0
PORTB
PORTA
DDRA
DDRB
PINA