ATmega48 Automotive Atmel Corporation, ATmega48 Automotive Datasheet - Page 280

• Manufacturer Part Number: ATmega48 Automotive
• Manufacturer: Atmel Corporation

Specifications of ATmega48 Automotive

• Flash (kbytes): 4 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 12
• 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: No
• Crypto Engine: No
• Sram (kbytes): 0.5
• Eeprom (bytes): 256
• Self Program Memory: NO
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 125
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 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

25.2
280
Fuse Bits
ATmega48/88/168 Automotive
The ATmega48/88/168 has three Fuse bytes.
tionality of all the fuses and how they are mapped into the Fuse bytes. Note that the fuses are
read as logical zero, “0”, if they are programmed.
Table 25-4.
Table 25-5.
Note:
Extended Fuse Byte
–
–
–
–
–
–
–
SELFPRGEN
Extended Fuse Byte
–
–
–
–
–
BOOTSZ1
BOOTSZ0
BOOTRST
1. The default value of BOOTSZ1..0 results in maximum Boot Size. See
for details.
Extended Fuse Byte for mega48
Extended Fuse Byte for mega88/168
Bit No
Bit No
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
Description
–
–
–
–
–
–
–
Self Programming Enable
Description
–
–
–
–
–
Select Boot Size
(see Table 113 for details)
Select Boot Size
(see Table 113 for details)
Select Reset Vector
Table 25-4
-
Table 25-7
Default Value
1
1
1
1
1
1
1
1 (unprogrammed)
Default Value
1
1
1
1
1
0 (programmed)
0 (programmed)
1 (unprogrammed)
describe briefly the func-
Table 25-8 on page 283
(1)
(1)
7530I–AVR–02/10