ATmega406 Atmel Corporation, ATmega406 Datasheet - Page 196

• 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

28.2
28.2.1
196
Fuse Bits
ATmega406
High Byte
Table 28-2.
Notes:
The ATmega406 has two Fuse bytes.
all the fuses and how they are mapped into the Fuse bytes. Note that the fuses are read as logi-
cal zero, “0”, if they are programmed.
Table 28-3.
Notes:
Fuse High Byte
–
–
–
–
–
–
OCDEN
JTAGEN
BLB1
Mode
1
2
3
4
Memory Lock Bits
1. Program the Fuse bits and Boot Lock bits before programming the LB1 and LB2.
2. “1” means unprogrammed, “0” means programmed
1. Never ship a product with the OCDEN Fuse programmed regardless of the setting of Lock bits
(1)
and JTAGEN Fuse. A programmed OCDEN Fuse enables some parts of the clock system to
be running in all sleep modes. This may increase the power consumption.
BLB12
Lock Bit Protection Modes
Fuse High Byte
1
1
0
0
Bit No
BLB11
7
6
5
4
3
2
1
0
1
0
0
1
Description
–
–
–
–
–
–
Enable OCD
Enable JTAG
Protection Type
No restrictions for SPM or LPM accessing the Boot Loader section.
SPM is not allowed to write to the Boot Loader section.
SPM is not allowed to write to the Boot Loader section, and LPM
executing from the Application section is not allowed to read from
the Boot Loader section. If Interrupt Vectors are placed in the
Application section, interrupts are disabled while executing from the
Boot Loader section.
LPM executing from the Application section is not allowed to read
from the Boot Loader section. If Interrupt Vectors are placed in the
Application section, interrupts are disabled while executing from the
Boot Loader section.
Table 28-3
(1)(2)
(Continued)
-
Table 28-4
describe briefly the functionality of
Default Value
1
1
1
1
1
1
1 (unprogrammed, OCD
disabled)
0 (programmed, JTAG enabled)
2548E–AVR–07/06