ST10F168 datasheet(31/74 Pages) STMICROELECTRONICS

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ST10F168

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11 - PWM MODULE

The pulse width modulation module can generate

up to four PWM output signals using edge-aligned

or centre-aligned PWM. In addition, the PWM

module can generate PWM burst signals and sin-

gle shot outputs. The Table 16 shows the PWM

frequencies for different resolutions. The level of

the output signals is selectable and the PWM

module can generate interrupt requests.

Table 16 : PWM unit frequencies and resolution at 25MHz CPU clock

Mode 0

Resolution

8-bit

10-bit

12-bit

14-bit

16-bit

CPU Clock / 1

40ns

97.66KHz

24.41KHz

6.104KHz

1.526KHz

0.381Hz

CPU Clock / 64

2.56

µs

1.526KHz

381.5Hz

95.37Hz

23.84Hz

5.96Hz

Mode 1

Resolution

8-bit

10-bit

12-bit

14-bit

16-bit

CPU Clock / 1

40ns

48.82KHz

12.20KHz

3.05KHz

762.9Hz

190.7Hz

CPU Clock / 64

2.56

µs

762.9Hz

190.7Hz

47.68Hz

11.92Hz

2.98Hz

Figure 8 : PWM Module Block Diagram

PPx Period Register

Comparator

PTx

16-Bit Up/Down Counter

Shadow Register

PWx Pulse Width Register

Input

Run

Control

Clock 1

Clock 2

Comparator

Up/Down/

Clear Control

Match

Output Control

Match

Write Control

* User readable & writeable register

Enable

POUTx

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