AT90PWM3B Atmel Corporation, AT90PWM3B Datasheet - Page 153

• Manufacturer Part Number: AT90PWM3B
• Manufacturer: Atmel Corporation

Specifications of AT90PWM3B

• Flash (kbytes): 8 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 8
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 27
• Ext Interrupts: 4
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Uart: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 11
• Adc Resolution (bits): 10
• Adc Speed (ksps): 125
• Analog Comparators: 3
• Resistive Touch Screen: No
• Dac Channels: 1
• Dac Resolution (bits): 10
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 0.5
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 105
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 5
• Output Compare Channels: 16
• Input Capture Channels: 1
• Pwm Channels: 12
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

16.17 PSC Input Mode 9: Fixed Frequency Edge Retrigger PSC
4317J–AVR–08/10
PSCn Input B
PSCOUTn0
PSCOUTn1
PSCn Input B
PSCn Input A
PSCOUTn0
PSCOUTn1
or
DT0
Figure 16-31. PSC behaviour versus PSCn Input A in Mode 8
The output frequency is modulated by the occurence of significative edge of retriggering input.
Figure 16-32. PSC behaviour versus PSCn Input B in Mode 8
The output frequency is modulated by the occurrence of significative edge of retriggering input.
The retrigger event is taken into account only if it occurs during the corresponding On-Time.
Note: In one ramp mode, the retrigger event on input A resets the whole ramp. So the PSC
doesn’t jump to the opposite dead-time.
DT0
OT0
OT0
DT1
DT1
OT1
OT1
DT0
DT0 OT0
OT0
DT1
DT1
OT1
OT1
DT0
DT0
AT90PWM2/3/2B/3B
OT0
OT0
DT1
DT1
OT1
OT1
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