AT90PWM2 View Datasheet(PDF) - Atmel Corporation
Part Name
Description
MFG CO.
'AT90PWM2' PDF : 365 Pages View PDF
AT90PWM2/3/2B/3B
16.3.1
PSC2 Distinctive Feature
Figure 16-2. PSC2 versus PSC1&PSC0 Block Diagram
PSC Counter
=
OCRnRB
=
OCRnSB
=
OCRnRA
=
OCRnSA
PICRn
PSCOUTn3
Waveform
Generator B
PSC Input
Module B
POS23
PSCn Input B
PSCOUTn1
( From Analog
Comparator n Ouput )
Output
Part A Matrix
PSC Input
Module A
PISELnB
PSCn Input A
PISELnA
Waveform
Generator A
POS22
PSCINn
PSCOUTn2
PSCOUTn0
Part B
PCNFn
PCTLn
PFRCnB
PFRCnA
POM2(PSC2 only)
PSOCn
16.3.2
Note: n = 2
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 (See “Output Matrix” on page 159.)
Output Polarity
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.
4317K–AVR–03/2013
133
Share Link: 
