ATmega406 Atmel Corporation, ATmega406 Datasheet - Page 70

• 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

13.3.2
70
ATmega406
Alternate Functions of Port B
The Port B pins with alternate functions are shown in
Table 13-6.
The alternate pin configuration is as follows:
• OC0B/PCINT15 – Port B, Bit 7
OC0B, Output Compare Match B output: The PB7 pin can serve as an external output for the
Timer/Counter0 Output Compare. The pin has to be configured as an output (DDB7 set (one)) to
serve this function. The OC0B pin is also the output pin for the PWM mode timer function.
PCINT15, Pin Change Interrupt Source 15. The PB7 pin can serve as external interrupt source
to the MCU.
• OC0A/PCINT14 – Port B, Bit 6
OC0A, Output Compare Match A output: The PB6 pin can serve as an external output for the
Timer/Counter0 Output Compare. The pin has to be configured as an output (DDB6 set (one)) to
serve this function. The OC0A pin is also the output pin for the PWM mode timer function.
PCINT14, Pin Change Interrupt Source 14. The PB6 pin can serve as external interrupt source
to the MCU.
• PCINT13:12 – Port B, Bit 5:4
PCINT13 - PCINT12, Pin Change Interrupt Source 13:12. The PB5:4 pinS can serve as external
interrupt sources to the MCU.
• TCK/PCINT11 – Port B, Bit 3
TCK, JTAG Test Clock: JTAG operation is synchronous to TCK. When the JTAG Interface is
enabled, this pin can not be used as an I/O pin.
PCINT11, Pin Change Interrupt Source 11. The PB3 pin can serve as external interrupt source
to the MCU.
Port Pin
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0
Alternate Functions
OC0B (Output Compare and PWM Output B for Timer/Counter0)
PCINT15 (Pin Change Interrupt 15)
OC0A (Output Compare and PWM Output A for Timer/Counter0)
PCINT14 (Pin Change Interrupt 14)
PCINT13 (Pin Change Interrupt 13)
PCINT12 (Pin Change Interrupt 12)
TCK (JTAG Test Clock)
PCINT11 (Pin Change Interrupt 11)
TMS (JTAG Test Mode Select)
PCINT10 (Pin Change Interrupt 10)
TDI (JTAG Test Data Input/)
PCINT9 (Pin Change Interrupt 9)
TDO (JTAG Test Data Output)
PCINT8 (Pin Change Interrupt 8)
Port B Pins Alternate Functions
Table
13-6.
2548E–AVR–07/06