ATmega168A Atmel Corporation, ATmega168A Datasheet - Page 274

• Manufacturer Part Number: ATmega168A
• Manufacturer: Atmel Corporation

Specifications of ATmega168A

• Flash (kbytes): 16 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 23
• Ext Interrupts: 24
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 1
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 6
• Input Capture Channels: 1
• Pwm Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

8271D–AVR–05/11
Similarly, when reading the Fuse High byte (FHB), load 0x0003 in the Z-pointer. When an LPM
instruction is executed within three cycles after the BLBSET and SELFPRGEN bits are set in the
SPMCSR, the value of the Fuse High byte will be loaded in the destination register as shown
below. See
byte.
Similarly, when reading the Extended Fuse byte (EFB), load 0x0002 in the Z-pointer. When an
LPM instruction is executed within three cycles after the BLBSET and SELFPRGEN bits are set
in the SPMCSR, the value of the Extended Fuse byte will be loaded in the destination register as
shown below. See
Fuse byte.
Fuse and Lock bits that are programmed, will be read as zero. Fuse and Lock bits that are
unprogrammed, will be read as one.
Bit
Rd
Bit
Rd
Table 28-5 on page 299
FHB7
FHB7
7
7
Table 28-5 on page 299
ATmega48A/PA/88A/PA/168A/PA/328/P
FHB6
FHB6
6
6
FHB5
FHB5
5
5
for detailed description and mapping of the Extended Fuse
for detailed description and mapping of the Extended
FHB4
FHB4
4
4
FHB3
FHB3
3
3
FHB2
FHB2
2
2
FHB1
FHB1
1
1
FHB0
FHB0
0
0
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