ZUSBOPTSC01ZAC datasheet(104/402 Pages) ZILOG

104 / 402 page

Pulse-Width Modulator

P R E L I M I N A R Y

PS024604-1005

Z8 Encore!® Motor Control Flash MCUs

Product Specification

PWM Minimum Pulse Width Filter

The value in the PWM Minimum Pulse Width Filter (PWMMPF) Register, shown in Table

51, determines the minimum width pulse, either high or low, that can be generated by the

PWM module. The minimum pulse width period is calculated as:

A Value other than 00H must be written to the PWMMPF registor or the PWM output

waveform will be distorted!

PWM Fault Mask Register

The PWM Fault Mask (PWMFM) Register, shown in Table 52, enables individual fault

sources. PWM behaviour when an input is asserted is determined by the PWM Fault Con-

trol Register (PWMFCTL).

TMINPULSEOUT =

PWMDB + PWMMPF

TSYSTEMCLOCK x PWMPrescale

Table 51. PWM Minimum Pulse Width Filter (PWMMPF)

BITS

FIELD

PWMMPF[7:0]

RESET

00H

R/W

ADDR

F23H

Bit

Position

Value

(H)

Description

[7:0]

PWMMPF

PWM Minimum Pulse Filter

Sets the minimum allowed output pulse width in PWM clock cycles.

Note: This register can only be written when PWEN is cleared.

Table 52. PWM Fault Mask Register (PWMFM)

BITS

FIELD

Reserved

DBGMSK

Reserved

F1MASK

C0MASK

FMASK

RESET

000

R/W

ADDR

F24H

Caution:

ZUSBOPTSC01ZAC 数据表(PDF) 104 Page - Zilog, Inc.

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