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ST10R172LT1

16-BIT LOW VOLTAGE ROMLESS MCU

STMicroelectronics 

ST10R172L - PWM MODULE

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

KByte.

8

PWM 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

CPU clock/64

20ns

1.28ns

195.3 KHz 48.83KHz 12.21KHz 3.052KHz 762.9Hz

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 4 PWM unit frequencies and resolution at 50MHz CPU clock

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