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Chapter 43 stepper motor controller, Overview, Block diagram of stepping motor controller – FUJITSU MB91460 SERIES FR60 User Manual

Page 887: Chapter 43 stepper motor controller 1.overview, Smc channel 0 (adc input)

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Chapter 43 Stepper Motor Controller

1.Overview

Chapter 43 Stepper Motor Controller

1. Overview

The stepping motor controller consists of PWM pulse generators, motor drivers, selector logic
circuits and A/D converter inputs.

The four motor drivers have a high-output driving capability and two motor coils can be connect-
ed directly to four pins. The motor rotation is designed to be controlled by a combination of the
PWM pulse generators and selector logic circuits. The synchronization mechanism enables
synchronous operation of two PWM pulse generators.

Block Diagram of Stepping Motor Controller

Figure 1-1 Stepping Motor Controller with A/D Converter Function

Remark: The SMC channels 0, 1, 2 and 3 are shared with ADC inputs.

PWM2 pulse generator

PWM1 pulse generator

CK

EN

PWM

PWM1 compare register

PWM1 selection

register

Selector

Output

enable

PWM1P

PWM1M

Output

enable

PWM2P

load

BS

PWM2M

Selector

CK

EN

PWM

PWM2 compare register

PWM2 selection register

P27.3/AN19/SMC2M0

P27.2/AN18/SMC2P0

P27.1/AN17/SMC1M0

P27.0/AN16/SMC1P0

Port 27

PWM control register

PFR27

CE bit

SC bit

PWM
Clock
Prescaler

Decoder

A/D conversion
channel setting
register

A/D converter
input

P26.x/ANx
P27.x/ANx
P28.x/ANx
P29.x/ANx

5

Peripheral
clock
CLKP

SMC channel 0 (ADC input)