ATmega48 Automotive Atmel Corporation, ATmega48 Automotive Datasheet - Page 334

• 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

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ATmega48/88/168 Automotive
7
8
9
10 I/O-Ports .................................................................................................. 62
11 External Interrupts ................................................................................. 81
12 8-bit Timer/Counter0 with PWM ............................................................ 86
Power Management and Sleep Modes ................................................. 36
System Control and Reset .................................................................... 41
Interrupts ................................................................................................ 52
6.9
6.10
6.11
7.1
7.2
7.3
7.4
7.5
7.6
7.7
8.1
8.2
9.1
9.2
9.3
10.1
10.2
10.3
10.4
12.1
12.2
12.3
12.4
12.5
12.6
12.7
12.8
Clock Output Buffer .........................................................................................33
Timer/Counter Oscillator ..................................................................................33
System Clock Prescaler ..................................................................................34
Idle Mode .........................................................................................................37
ADC Noise Reduction Mode ............................................................................37
Power-down Mode ...........................................................................................37
Power-save Mode ............................................................................................38
Standby Mode .................................................................................................38
Power Reduction Register ...............................................................................39
Minimizing Power Consumption ......................................................................40
Internal Voltage Reference ..............................................................................46
Watchdog Timer ..............................................................................................47
Interrupt Vectors in ATmega48 ........................................................................53
Interrupt Vectors in ATmega88 ........................................................................54
Interrupt Vectors in ATmega168 ......................................................................58
Introduction ......................................................................................................62
Ports as General Digital I/O .............................................................................63
Alternate Port Functions ..................................................................................68
Register Description for I/O Ports ....................................................................80
Overview ..........................................................................................................86
Timer/Counter Clock Sources .........................................................................87
Counter Unit ....................................................................................................87
Output Compare Unit .......................................................................................88
Compare Match Output Unit ............................................................................90
Modes of Operation .........................................................................................91
Timer/Counter Timing Diagrams .....................................................................95
8-bit Timer/Counter Register Description ........................................................97
7530I–AVR–02/10