AT90PWM2B-16SU 查看數據表（PDF） - Atmel Corporation

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AT90PWM2B-16SU

8-bit Atmel Microcontroller with 8K Bytes In-System Programmable Flash

Atmel Corporation 

AT90PWM2/3/2B/3B

16.3 PSC Description

Figure 16-1. Power Stage Controller 0 or 1 Block Diagram

PSC Counter

=

OCRnRB

=

OCRnSB

=

OCRnRA

=

OCRnSA

PICRn

Waveform

Generator B

PSC Input

Module B

PSCn Input B

PSCOUTn1

( From Analog

Comparator n Ouput )

Part B

PISELnB

PSC Input

Module A

PSCn Input A

PISELnA

PSCINn

Waveform

Generator A

PSCOUTn0

Part A

PCNFn

PCTLn

PFRCnB

PFRCnA

POM2(PSC2 only)

PSOCn

Note: n = 0, 1

The principle of the PSC is based on the use of a counter (PSC counter). This counter is able to

count up and count down from and to values stored in registers according to the selected run-

ning mode.

The PSC is seen as two symmetrical entities. One part named part A which generates the output

PSCOUTn0 and the second one named part B which generates the PSCOUTn1 output.

Each part A or B has its own PSC Input Module to manage selected input.

4317K–AVR–03/2013

132

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