ST7MC1K2-Auto datasheet(277/371 Pages) STMICROELECTRONICS

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On-chip peripherals

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Repetition counter register (MREP)

Compare phase W preload register high (MCPWH)

Compare phase W preload register low (MCPWL)

MREP

Reset value: 0000 0000 (00h)

654

REP[7:0]

R/W

Table 145.

MREP register description

Bit

Name

Function

7:0 REP[7:0]

Repetition counter value (N)

This register allows the user to set up the update rate of the PWM counter compare

PWM Update interrupt generation rate, if these interrupts are enabled.

Each time the MREP related down-counter reaches zero, the compare registers

are updated, a U interrupt is generated and it re-starts counting from the MREP

value.

After a microcontroller reset, setting the CKE bit in the MCRA register (that is,

enabling the clock for the MTC peripheral) forces the transfer from the MREP

preload register to its active register and generates a U interrupt. During run-time

(while CKE bit = 1) a new value entered in the MREP preload register is taken into

account after a U event.

As shown in Figure 123, (N+1) value corresponds to:

The number of PWM periods in edge-aligned mode

The number of half PWM periods in center- aligned mode

MCPWH

Reset value: 0000 0000 (00h)

654

CPWH[7:0

R/W

Table 146.

MCPWH register description

Bit

Name

Function

7:0 CPWH[7:0] Most significant byte of phase W preload value

MCPWL

Reset value: 0000 0000 (00h)

654

CPWL[7:3]

Reserved

R/W

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