ATmega406 Atmel Corporation, ATmega406 Datasheet - Page 51

• 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

11. Interrupts
11.1
2548E–AVR–07/06
Interrupt Vectors in ATmega406
This section describes the specifics of the interrupt handling as performed in ATmega406. For a
general explanation of the AVR interrupt handling, refer to
page
Table 11-1.
Notes:
Table 11-2
BOOTRST and IVSEL settings. If the program never enables an interrupt source, the Interrupt
Vector
No.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
1
2
3
4
5
6
7
8
9
14.
1. When the BOOTRST Fuse is programmed, the device will jump to the Boot Loader address at
2. When the IVSEL bit in MCUCR is set, Interrupt Vectors will be moved to the start of the Boot
0x0002
0x0004
0x0006
0x0008
0x000A
0x000C
0x000E
0x0010
0x0012
0x0014
0x0016
0x0018
0x001A
0x001C
0x001E
0x0020
0x0022
0x0024
0x0026
0x0028
0x002A
0x002C
reset, see
Flash Section. The address of each Interrupt Vector will then be the address in this table
added to the start address of the Boot Flash Section.
Address
0x0000
shows reset and Interrupt Vectors placement for the various combinations of
Program
Reset and Interrupt Vectors
(1)
(2)
”Boot Loader Support – Read-While-Write Self-Programming” on page
Source
RESET
BPINT
INT0
INT1
INT2
INT3
PCINT0
PCINT1
WDT
WAKE_UP
TIMER1 COMP
TIMER1 OVF
TIMER0 COMPA
TIMER0 COMPB
TIMER0 OVF
TWI BUS C/D
TWI
VADC
CCADC CONV
CCADC REG CUR
CCADC ACC
EE READY
SPM READY
Interrupt Definition
External Pin, Power-on Reset, Brown-out Reset,
Watchdog Reset, and JTAG AVR Reset
Battery Protection Interrupt
External Interrupt Request 0
External Interrupt Request 1
External Interrupt Request 2
External Interrupt Request 3
Pin Change Interrupt 0
Pin Change Interrupt 1
Watchdog Time-out Interrupt
Wake-up Timer Overflow
Timer 1 Compare Match
Timer 1 Overflow
Timer 0 Compare Match A
Timer 0 Compare Match B
Timer 0 Overflow
Two-wire Bus Connect/Disconnect
Two-wire Serial Interface
Voltage ADC Conversion Complete
CC-ADC Instantaneous Current Conversion
Complete
CC-ADC Regular Current
CC-ADC Accumulate Current Conversion Complete
EEPROM Ready
Store Program Memory Ready
”Reset and Interrupt Handling” on
ATmega406
178.
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