ATmega406 Atmel Corporation, ATmega406 Datasheet - Page 76

• Manufacturer Part Number: ATmega406
• Manufacturer: Atmel Corporation

Specifications of ATmega406

• Flash (kbytes): 40 Kbytes
• Pin Count: 48
• Max. Operating Frequency: 1 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 8
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 18
• Ext Interrupts: 4
• Usb Speed: No
• Usb Interface: No
• Twi (i2c): 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 11
• Adc Resolution (bits): 12
• Adc Speed (ksps): 1.9
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 2
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -30 to 85
• I/o Supply Class: 4.0 to 25
• Operating Voltage (vcc): 4.0 to 25
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 3
• Pwm Channels: 2
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

14.2
14.3
14.3.1
76
Configuring the Pin
Register Description for High Voltage Output Ports
ATmega406
PORTC – Port C Data Register
Figure 14-2. General High Voltage Digital I/O
Note:
Each port pin has one register bit: PORTxn. As shown in
Output Ports” on page
is written logic one, the port pin is driven low (zero). If PORTxn is written logic zero, the port pin
is tri-stated. The port pins are tri-stated when a reset condition becomes active, even if no clocks
are running.
Bit
0x08 (0x28)
Read/Write
Initial Value
1. WRx and RRx are common to all pins within the same port.
R
7
–
0
76, the PORTxn bits are accessed at the PORTx I/O address. If PORTxn
R
6
0
Pxn
WRx:
RRx:
R
5
0
WRITE PORTx
READ PORTx REGISTER
R
4
0
RESET
PORTxn
(1)
Q
Q
CLR
D
R
3
0
”Register Description for High Voltage
WRx
RRx
R
2
0
R
1
0
PORTC0
R/W
0
0
2548E–AVR–07/06
PORTC