C167CS datasheet(343/517 Pages) INFINEON

343 / 517 page

C167CS

Derivatives

The Pulse Width Modulation Module

User’s Manual

17-2

V2.0, 2000-07

Figure 17-2

PWM Channel Block Diagram

17.1

Operating Modes

The PWM module provides four different operating modes:

• Standard PWM generation (edge aligned PWM) available on all four channels

• Symmetrical PWM generation (center aligned PWM) available on all four channels

• Burst mode combines channels 0 and 1

• Single shot mode available on channels 2 and 3

Note: The output signals of the PWM module are XORed with the outputs of the

respective port output latches. After reset these latches are cleared, so the PWM

signals are directly driven to the port pins. By setting the respective port output

latch to ‘1’ the PWM signal may be inverted (XORed with ‘1’) before being driven

to the port pin. The descriptions below refer to the standard case after reset, i.e.

direct driving.

Write

Control

Output

Control

Up/Down/

Clear

Control

Write

Control

Match

POUTx

Input

Control

User Read-

& Writeable

PPx Period Register

Shadow Register

Comparator

PTx

16-Bit Up/Down

Counter

Comparator

Shadow Register

PWx Pulse Width Reg.

CPU

Run

Enable

MCB01948

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