ST10F276Z5 datasheet(89/239 Pages) STMICROELECTRONICS

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ST10F276Z5

PWM modules

89/239

PWM modules

Two pulse width modulation modules are available on ST10F276Z5: standard PWM0 and

XBUS PWM1. They can generate up to four PWM output signals each, using edge-aligned

or centre-aligned PWM. In addition, the PWM modules can generate PWM burst signals and

single shot outputs. The Table 51 and Table 52 show the PWM frequencies for different

resolutions. The level of the output signals is selectable and the PWM modules can

generate interrupt requests.

Figure 19.

Block diagram of PWM module

Table 51.

PWM unit frequencies and resolutions at 40 MHz CPU clock

Mode

Resolution

8-bit

10-bit

12-bit

14-bit

16-bit

Mode 0

CPU Clock/1

25 ns

156.25 kHz

39.1 kHz

9.77 kHz

2.44 Hz

610 Hz

CPU

Clock/64

1.6

µs

2.44 kHz

610 Hz

152.6 Hz

38.15 Hz

9.54 Hz

Mode 1

CPU Clock/1

25 ns

78.12 kHz

19.53 kHz

4.88 kHz

1.22 kHz

305.2Hz

CPU

Clock/64

1.6

µs

1.22 kHz

305.17 Hz

76.29 Hz

19.07 Hz

4.77 Hz

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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