AT90PWM2B-16SU View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT90PWM2B-16SU

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

Atmel Corporation 

AT90PWM2/3/2B/3B

Table 16-12. Synchronization Source Description in Centered Mode

PSYNCn1 PSYNCn0 Description

0

0

Send signal on match with OCRnRA (during counting down of PSC). The

min value of OCRnRA must be 1.

0

1

Send signal on match with OCRnRA (during counting up of PSC). The

min value of OCRnRA must be 1.

1

0

no synchronization signal

1

1

no synchronization signal

• Bit 3 – POEN2D : PSCOUT23 Output Enable (PSC2 only)

When this bit is clear, second I/O pin affected to PSCOUT23 acts as a standard port.

When this bit is set, I/O pin related to PSCOUT23 is connected to PSC2 waveform generator A

or B output (according to POS23 setting) and is set and cleared according to PSC2 operation.

• Bit 2 – POENnB: PSC n OUT Part B Output Enable

When this bit is clear, I/O pin affected to PSCOUTn1 acts as a standard port.

When this bit is set, I/O pin affected to PSCOUTn1 is connected to the PSC waveform generator

B output and is set and clear according to the PSC operation.

• Bit 1 – POEN2C: PSCOUT22 Output Enable (PSC2 only)

When this bit is clear, second I/O pin affected to PSCOUT22 acts as a standard port.

When this bit is set, I/O pin related to PSCOUT22 is connected to PSC2 waveform generator A

or B output (according to POS22 setting) and it is set and cleared according to PSC2 operation.

• Bit 0 – POENnA: PSC n OUT Part A Output Enable

When this bit is clear, I/O pin affected to PSCOUTn0 acts as a standard port.

When this bit is set, I/O pin affected to PSCOUTn0 is connected to the PSC waveform generator

A output and is set and clear according to the PSC operation.

16.25.4

Output Compare SA Register – OCRnSAH and OCRnSAL

Bit

Read/Write

Initial Value

7

6

5

4

3

–

–

–

–

OCRnSA[7:0]

R/W

R/W

R/W

R/W

R/W

0

0

0

0

0

16.25.5

Output Compare RA Register – OCRnRAH and OCRnRAL

Bit

Read/Write

Initial Value

7

6

5

4

3

–

–

–

–

OCRnRA[7:0]

W

W

W

W

W

0

0

0

0

0

2

1

OCRnSA[11:8]

R/W

R/W

0

0

2

1

OCRnRA[11:8]

W

W

0

0

0

OCRnSAH

OCRnSAL

R/W

0

0

OCRnRAH

OCRnRAL

W

0

4317K–AVR–03/2013

164

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