MEC1322 datasheet(288/456 Pages) MICROCHIP

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MEC1322

DS00001719D-page 288

 2014 - 2015 Microchip Technology Inc.

FIGURE 25-4:

PWM DUTY CYCLE EQUATION

The PWMx Counter ON Time Register and PWMx Counter OFF Time Register registers should be accessed as 16-bit

values.

25.11 EC-Only Registers

The registers listed in the EC-Only Register Summary table are for a single instance of the PWM. The addresses of

each register listed in this table are defined as a relative offset to the host “Base Address” defined in the EC-Only Reg-

ister Base Address Table.

The Base Address indicates where the first register can be accessed in a particular address space for a block instance.

25.11.1

PWMX COUNTER ON TIME REGISTER

TABLE 25-5:

EC-ONLY REGISTER BASE ADDRESS TABLE

Block Instance

Instance

Number

Host

Address Space

Base Address

PWM

32-bit internal

address space

4000_5800h

PWM

32-bit internal

address space

4000_5810h

PWM

32-bit internal

address space

4000_5820h

PWM

32-bit internal

address space

4000_5830h

TABLE 25-6:

EC-ONLY REGISTER SUMMARY

Offset

00h

PWMx Counter ON Time Register

04h

PWMx Counter OFF Time Register

08h

PWMx Configuration Register

Offset

00h

Bits

Description

Type

Default

Reset

Event

31:16 Reserved

15:0 PWMX_COUNTER_ON_TIME

This field determine both the frequency and duty cycle of the PWM

signal.

When this field is set to zero and the PWMX_COUNTER_OFF_-

TIME is not set to zero, the PWM_OUTPUT is held low (Full Off).

R/W

0000h

VCC1_R

ESET

PWM Duty Cycle

PWMCounterOnTime

PWMCounterOffTime

()

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