ATmega8A Atmel Corporation, ATmega8A Datasheet - Page 62

• Manufacturer Part Number: ATmega8A
• Manufacturer: Atmel Corporation

Specifications of ATmega8A

• Flash (kbytes): 8 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 12
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 23
• Ext Interrupts: 2
• 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): 1
• 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
• Pwm Channels: 3
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

8159D–AVR–02/11
• ADC2 – Port C, Bit 2
PC2 can also be used as ADC input Channel 2. Note that ADC input channel 2 uses analog
power.
• ADC1 – Port C, Bit 1
PC1 can also be used as ADC input Channel 1. Note that ADC input channel 1 uses analog
power.
• ADC0 – Port C, Bit 0
PC0 can also be used as ADC input Channel 0. Note that ADC input channel 0 uses analog
power.
Table 12-6
shown in
Table 12-6.
Table 12-7.
Note:
Signal Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
Signal Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
1. When enabled, the Two-wire Serial Interface enables slew-rate controls on the output pins
Figure 12-5 on page
PC4 and PC5. This is not shown in the figure. In addition, spike filters are connected between
the AIO outputs shown in the port figure and the digital logic of the TWI module.
and
Overriding Signals for Alternate Functions in PC6:PC4
Overriding Signals for Alternate Functions in PC3:PC0
Table 12-7
PC6/RESET
RSTDISBL
1
RSTDISBL
0
0
0
RSTDISBL
0
–
RESET INPUT
PC3/ADC3
0
0
0
0
0
0
0
0
–
ADC3 INPUT
relate the alternate functions of Port C to the overriding signals
56.
PC5/SCL/ADC5
TWEN
PORTC5 • PUD
TWEN
SCL_OUT
TWEN
0
0
0
–
ADC5 INPUT / SCL INPUT
PC2/ADC2
0
0
0
0
0
0
0
0
–
ADC2 INPUT
PC1/ADC1
0
0
0
0
0
0
0
–
ADC1 INPUT
0
PC4/SDA/ADC4
TWEN
PORTC4 • PUD
TWEN
SDA_OUT
TWEN
0
0
0
–
ADC4 INPUT / SDA INPUT
(1)
ATmega8A
PC0/ADC0
0
0
0
0
0
0
0
0
–
ADC0 INPUT
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