ATmega406 Atmel Corporation, ATmega406 Datasheet - Page 131

• 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

22.7.6
2548E–AVR–07/06
BPDUV – Battery Protection Deep Under Voltage Register
Table 22-6.
• Bit 7:6 – Res: Reserved Bits
These bits are reserved bits in the ATmega406 and will always read as zero.
• Bits 5:4 – DUVT1:0: Deep Under-voltage Timing
These bits set the Deep Under-voltage Protection delay.
Table 22-7.
• Bits 3:0 – DUDL3:0: Deep Under-voltage Detection Level
These bits set the Deep Under-voltage detection level.
Table 22-8.
Bit
(0xF3)
Read/Write
Initial Value
DUVT1:0
00
01
10
11
DUDL[3:0]
0000
0001
0010
0011
0100
0101
0110
0111
SCDL[3:0]
0000
0001
0010
0011
SCDL[3:0] with Corresponding R
DUVT[1:0] with Corresponding Deep Under-voltage Delay
DUDL[3:0] with Corresponding Deep Under-voltage Detection Level
0.100V
0.110V
0.120V
0.130V
Typ
R
7
–
0
SCDL[3:0]
R
6
–
0
0100
0101
0110
0111
Short-circuit Protection Detection Level
Deep Under-voltage Delay
750 ms
1000 ms
1250 ms
1500 ms
Typ
4.71V
5.03V
5.34V
5.66V
5.97V
6.29V
6.60V
6.91V
R/W
5
0
DUVT[1:0]
0.140V
0.160V
0.180V
0.200V
Typ
R/W
4
0
SENSE
DUDL[3:0]
1000
1001
1010
1011
1100
1101
1110
1111
SCDL[3:0]
R/W
1000
1001
1010
1011
Voltage for Short-circuit Detection Level
3
0
R/W
2
0
DUDL[3:0]
0.220V
0.240V
0.260V
0.280V
Typ
R/W
1
0
ATmega406
SCDL[3:0]
1100
1101
1110
1111
Typ
7.23V
7.54V
7.86V
8.17V
8.49V
8.80V
9.11V
9.43V
R/W
0
0
0.320V
0.360V
0.400V
0.440V
BPDUV
Typ
131