ST10R272LT1 datasheet(26/77 Pages) STMICROELECTRONICS

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ST10R272L - PWM MODULE

of external memory space, the address space can be restricted to 1 MByte, 256 KByte or to 64

KByte.

9PWM MODULE

A 1-channel Pulse Width Modulation (PWM) Module operates on channel 3. 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. The table below shows the PWM frequencies for different resolutions. The level of

the output signals is selectable and the PWM module can generate interrupt requests.

Mode 0

edge aligned

Resolution

8-bit

10-bit

12-bit

14-bit

16-bit

CPU clock/1

20ns

195.3 KHz

48.83KHz

12.21KHz

3.052KHz

762.9Hz

CPU clock/64

1.28ns

3.052KHz

762.9Hz

190.7Hz

47.68Hz

11.92Hz

Mode 1

center aligned

Resolution

8-bit

10-bit

12-bit

14-bit

16-bit

CPU clock/1

20ns

97.66KHz

24.41KHz

6.104KHz

1.525KHz

381.5Hz

CPU clock/64

1.28ns

1.525Hz

381.5 Hz

95.37Hz

23.84Hz

0Hz

Table 7 PWM unit frequencies and resolution at 50MHz CPU clock

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