ATmega48 Automotive Atmel Corporation, ATmega48 Automotive Datasheet - Page 111

• 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

7701E–AVR–02/11
Figure 14-10. Timer/Counter Timing Diagram, Setting of OCF1x, no Prescaling
Figure 14-11 on page 111
Figure 14-11. Timer/Counter Timing Diagram, Setting of OCF1x, with Prescaler (f
Figure 14-12 on page 112
using phase and frequency correct PWM mode the OCR1x Register is updated at BOTTOM.
The timing diagrams will be the same, but TOP should be replaced by BOTTOM, TOP-1 by
BOTTOM+1 and so on. The same renaming applies for modes that set the TOV1 flag at
BOTTOM.
TCNTn
OCRnx
OCFnx
OCRnx
(clk
TCNTn
OCFnx
(clk
clk
clk
clk
clk
I/O
I/O
I/O
Tn
I/O
Tn
/1)
/8)
OCRnx - 1
OCRnx - 1
shows the same timing data, but with the prescaler enabled.
Atmel ATtiny24/44/84 [Preliminary]
shows the count sequence close to TOP in various modes. When
OCRnx
OCRnx
OCRnx Value
OCRnx Value
OCRnx + 1
OCRnx + 1
OCRnx + 2
OCRnx + 2
clk_I/O
/8)
111