ATmega8HVA Atmel Corporation, ATmega8HVA Datasheet - Page 58

• 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. High Voltage I/O Ports
14.1
58
Overview
ATmega8HVA/16HVA
All high voltage AVR ports have true Read-Modify-Write functionality when used as general dig-
ital I/O ports. This means that the state of one port pin can be changed without unintentionally
changing the state of any other pin with the SBI and CBI instructions. All high voltage I/O pins
have protection Zener diodes to Ground as indicated in
tics” on page 165
Figure 14-1. High Voltage I/O Pin Equivalent Schematic
All registers and bit references in this section are written in general form. A lower case “x” repre-
sents the numbering letter for the port, and a lower case “n” represents the bit number. However,
when using the register or bit defines in a program, the precise form must be used. For example,
PORTC3 for bit number three in Port C, here documented generally as PORTxn. The physical
I/O Registers and bit locations are listed in
One I/O Memory address location is allocated for each high voltage port, the Data Register –
PORTx. The Data Register is read/write.
Using the I/O port as General Digital Output is described in
ital I/O” on page
Pxn
59.
for a complete list of parameters.
C
pin
”Register Description” on page
Figure
"General High Voltage
Digital I/O" for Details
”High Voltage Ports as General Dig-
14-1. See
See Figure
Logic
”Electrical Characteris-
62.
8024A–AVR–04/08