ZUSBOPTSC01ZAC datasheet(98/402 Pages) ZILOG

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Pulse-Width Modulator

P R E L I M I N A R Y

PS024604-1005

Z8 Encore!® Motor Control Flash MCUs

Product Specification

PWMH and PWML—PWM High and Low Bytes

These 2 bytes, {PWMH[3:0], PWML[7:0]}, contain the current 12-bit PWM count value.

PWM Reload High and Low Byte Registers

The PWM Reload High and Low Byte (PWMRH and PWMRL) registers, shown in Table

44 and Table 45, store a 12-bit reload value, {PWMRH[3:0], PWMRL[7:0]}. The PWM

reload value is held in buffer registers. The PWM reload value written to the buffer regis-

ters is not used by the PWM generator until the next PWM reload event occurs. Reads

from these registers always return the values from the buffer registers.

Table 43. PWM Low Byte Register (PWML)

BITS

FIELD

PWML

RESET

00H

R/W

ADDR

F2DH

Edge-Aligned PWM Mode Period =

Prescaler x Reload Value

fPWMCLK

Center-Aligned PWM Mode Period =

2 x Prescaler x Reload Value

fPWMCLK

Table 44. PWM Reload High Byte Register (PWMRH)

BITS

FIELD

Reserved

PWMRH

RESET

R/W

ADDR

F2EH

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