AT90PWM2B Atmel Corporation, AT90PWM2B Datasheet - Page 131

• Manufacturer Part Number: AT90PWM2B
• Manufacturer: Atmel Corporation

Specifications of AT90PWM2B

• Flash (kbytes): 8 Kbytes
• Pin Count: 24
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 8
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 19
• Ext Interrupts: 4
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Uart: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 125
• Analog Comparators: 2
• 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: 4
• Output Compare Channels: 12
• Input Capture Channels: 1
• Pwm Channels: 7
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

16.3.1
16.3.2
4317J–AVR–08/10
PSC2 Distinctive Feature
Output Polarity
Figure 16-2. PSC2 versus PSC1&PSC0 Block Diagram
Note:
PSC2 has two supplementary outputs PSCOUT22 and PSCOUT23. Thanks to a first selector
PSCOUT22 can duplicate PSCOUT20 or PSCOUT21. Thanks to a second selector PSCOUT23
can duplicate PSCOUT20 or PSCOUT21.
The Output Matrix is a kind of 2*2 look up table which gives the possibility to program the output
values according to a PSC sequence
The polarity “active high” or “active low” of the PSC outputs is programmable. All the timing dia-
grams in the following examples are given in the “active high” polarity.
n = 2
PCTLn
OCRnRB
OCRnSB
OCRnRA
PICRn
PSC Counter
OCRnSA
PCNFn
=
=
=
=
PFRCnA
PFRCnB
(See “Output Matrix” on page
Generator B
PSC Input
Module B
PSC Input
Module A
Generator A
Waveform
Waveform
Part A
Part B
Output
Matrix
PSOCn
POM2(PSC2 only)
AT90PWM2/3/2B/3B
PSCn Input A
PSCn Input B
POS23
POS22
PISELnA
PISELnB
157.)
Comparator n Ouput )
( From Analog
PSCOUTn3
PSCOUTn1
PSCINn
PSCOUTn2
PSCOUTn0
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