AT90PWM2B-16SE ATMEL [ATMEL Corporation], AT90PWM2B-16SE Datasheet - Page 131
AT90PWM2B-16SE
Manufacturer Part Number
AT90PWM2B-16SE
Description
8-bit Microcontroller with 8K Bytes In-System Programmable Flash
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT90PWM2B-16SE.pdf
(361 pages)
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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
131
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