ATmega48 Automotive Atmel Corporation, ATmega48 Automotive Datasheet - Page 337

• 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

7530I–AVR–02/10
23 Self-Programming the Flash, ATmega48 ........................................... 256
24 Boot Loader Support – Read-While-Write Self-Programming,
25 Memory Programming ......................................................................... 278
26 Electrical Characteristics .................................................................... 298
27 2-wire Serial Interface Characteristics ............................................... 303
ATmega88 and ATmega168 ................................................................ 263
22.5
22.6
23.1
24.1
24.2
24.3
24.4
24.5
24.6
24.7
25.1
25.2
25.3
25.4
25.5
25.6
25.7
25.8
26.1
26.2
26.3
26.4
26.5
26.6
26.7
26.8
27.1
27.2
Limitations of debugWIRE .............................................................................255
debugWIRE Related Register in I/O Memory ................................................255
Addressing the Flash During Self-Programming ...........................................257
Boot Loader Features ....................................................................................263
Application and Boot Loader Flash Sections .................................................263
Read-While-Write and No Read-While-Write Flash Sections ........................264
Boot Loader Lock Bits ...................................................................................266
Entering the Boot Loader Program ................................................................267
Addressing the Flash During Self-Programming ...........................................269
Self-Programming the Flash ..........................................................................270
Program And Data Memory Lock Bits ...........................................................278
Fuse Bits ........................................................................................................280
Signature Bytes .............................................................................................282
Calibration Byte .............................................................................................282
Parallel Programming Parameters, Pin Mapping, and Commands ...............282
Serial Programming Pin Mapping ..................................................................285
Parallel Programming ....................................................................................285
Serial Downloading ........................................................................................293
Absolute Maximum Ratings* .........................................................................298
DC Characteristics .........................................................................................298
External Clock Drive Waveforms ...................................................................300
External Clock Drive ......................................................................................300
Maximum Speed vs. V
LIN Re-synchronization algorithm .................................................................301
Synchronization Algorithm .............................................................................301
Precaution Against OSCCAL Discontinuity ...................................................302
SPI Timing Characteristics ............................................................................305
ADC Characteristics .....................................................................................306
ATmega48/88/168 Automotive
CC
...............................................................................301
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