ST10F269Z1Q6 datasheet(56/184 Pages) STMICROELECTRONICS

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11 - PWM MODULE

ST10F269

56/184

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

single shot outputs. Table 16 and Table 17 show

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 40MHz CPU Clock (PQFP144 devices)

Table 17 : PWM Unit Frequencies and Resolution at 32MHz CPU Clock (TQFP144 devices)

Figure 17 : Block Diagram of PWM Module

Mode 0

Resolution

8-bit

10-bit

12-bit

14-bit

16-bit

CPU Clock/1

25ns

156.25kHz

39.1kHz

9.77kHz

2.44Hz

610Hz

CPU Clock/64

1.6

µs

2.44Hz

610Hz

152.6Hz

38.15Hz

9.54Hz

Mode 1

Resolution

8-bit

10-bit

12-bit

14-bit

16-bit

CPU Clock/1

25ns

78.12kHz

19.53kHz

4.88kHz

1.22kHz

305.17Hz

CPU Clock/64

1.6

µs

1.22kHz

305.17Hz

76.29Hz

19.07Hz

4.77Hz

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

Mode 0

Resolution

8-bit

10-bit

12-bit

14-bit

16-bit

CPU Clock/1

31.25ns

125KHz

31.25KHz

7.81KHz

1.953KHz

976.6Hz

CPU Clock/64

2.00

µs

1.953KHz

488.3Hz

122.1Hz

30.52Hz

7.63Hz

Mode 1

Resolution

8-bit

10-bit

12-bit

14-bit

16-bit

CPU Clock/1

31.25ns

62.5KHz

15.62KHz

3.90KHz

976.6Hz

244.1Hz

CPU Clock/64

2.00

µs

976.6Hz

244.1Hz

61Hz

15.26Hz

3.81Hz

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