ATmega8HVA Atmel Corporation, ATmega8HVA Datasheet - Page 61

• Manufacturer Part Number: ATmega8HVA
• Manufacturer: Atmel Corporation

Specifications of ATmega8HVA

• Flash (kbytes): 8 Kbytes
• Pin Count: 28
• Max. Operating Frequency: 4 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 3
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 6
• Ext Interrupts: 3
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 6
• Adc Resolution (bits): 12
• Adc Speed (ksps): 1.9
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.5
• Eeprom (bytes): 256
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -20 to 85
• I/o Supply Class: 1.8 to 9.0
• Operating Voltage (vcc): 1.8 to 9.0
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 4
• Input Capture Channels: 2
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

14.4.1
8024A–AVR–04/08
Alternate Functions of Port C
Table 14-1.
The Port C pins with alternate functions are shown in
Table 14-2.
The alternate pin configuration is as follows:
• INT0 - Port C, Bit 0
INT0: External Interrupt Source 0. The PC0 pin can serve as external interrupt source. INT0 can
be used as an interrupt pin regardless of whether another special function is enabled or not.
Table 14-3
3 on page
Table 14-3.
Signal Name
PVOE
PVOV
DIEOE
DIEOV
DI
Signal Name
PVOE
DIEOE
DIEOV
DI
Port Pin
PC0
60.
relates the alternate functions of Port C to the overriding signals shown in
Generic Description of Overriding Signals for Alternate Functions
Port C Pins Alternate Functions
Overriding Signals for Alternate Functions in PC0
Full Name
Port Value
Override Enable
Port Value
Override Value
Digital Input
Enable Override
Enable
Digital Input
Enable Override
Value
Digital Input
Alternate Function
INT0/ ICP0 (External Interrupt 0 or Timer/Counter0 Input Capture Trigger)
PC0/INT0
0
INT Enable
1
INT0 INPUT
Description
If this signal is set and the Output Driver is enabled, the port
value is controlled by the PVOV signal. If PVOE is cleared, and
the Output Driver is enabled, the port Value is controlled by the
PORTxn Register bit.
If PVOE is set, the port value is set to PVOV, regardless of the
setting of the PORTxn Register bit.
If this bit is set, the Digital Input Enable is controlled by the
DIEOV signal. If this signal is cleared, the Digital Input Enable
is determined by MCU state (Normal mode, sleep mode).
If DIEOE is set, the Digital Input is enabled/disabled when
DIEOV is set/cleared, regardless of the MCU state (Normal
mode, sleep mode).
This is the Digital Input to alternate functions. In the figure, the
signal is connected to the output of the schmitt trigger but
before the synchronizer. Unless the Digital Input is used as a
clock source, the module with the alternate function will use its
own synchronizer.
Table
ATmega8HVA/16HVA
14-2.
Figure 14-
61