ATmega8535 Atmel Corporation, ATmega8535 Datasheet - Page 64

• Manufacturer Part Number: ATmega8535
• Manufacturer: Atmel Corporation

Specifications of ATmega8535

• Flash (kbytes): 8 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): 0.5
• Eeprom (bytes): 512
• 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

Alternate Functions of Port D
64
ATmega8535(L)
Table 31. Overriding Signals for Alternate Functions in PC1..PC0
Note:
The Port D pins with alternate functions are shown in Table 32.
Table 32. Port D Pins Alternate Functions
The alternate pin configuration is as follows:
• OC2 – Port D, Bit 7
OC2, Timer/Counter2 Output Compare Match output: The PD7 pin can serve as an
external output for the Timer/Counter2 Output Compare. The pin has to be configured
as an output (DDD7 set (one)) to serve this function. The OC2 pin is also the output pin
for the PWM mode timer function.
• ICP1 – Port D, Bit 6
ICP1 – Input Capture Pin: The PD6 pin can act as an Input Capture pin for
Timer/Counter1.
• OC1A – Port D, Bit 5
OC1A, Output Compare Match A output: The PD5 pin can serve as an external output
for the Timer/Counter1 Output Compare A. The pin has to be configured as an output
Signal Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
Port Pin
PD7
PD6
PD5
PD4
PD3
PD2
PD1
PD0
1. When enabled, the Two-wire Serial Interface enables slew-rate controls on the output
pins PC0 and PC1. This is not shown in the figure. In addition, spike filters are con-
nected between the AIO outputs shown in the port figure and the digital logic of the
TWI module.
Alternate Function
OC2 (Timer/Counter2 Output Compare Match Output)
ICP1 (Timer/Counter1 Input Capture Pin)
OC1A (Timer/Counter1 Output Compare A Match Output)
OC1B (Timer/Counter1 Output Compare B Match Output)
INT1 (External Interrupt 1 Input)
INT0 (External Interrupt 0 Input)
TXD (USART Output Pin)
RXD (USART Input Pin)
PC1/SDA
TWEN
PORTC1 • PUD
TWEN
SDA_OUT
TWEN
0
0
0
–
SDA INPUT
PC0/SCL
TWEN
PORTC0 • PUD
TWEN
SCL_OUT
TWEN
0
0
0
–
SCL INPUT
(1)
2502K–AVR–10/06