Renesas M16C FAMILY Manual de usuario descargar pdf (Pagina 14)

M16C Platform

™

On-chip Peripherals

■ Highly Functional Timers

M16C MCUs have input and output timers that are used in combination with other peripheral functions.

CIN

External

signals input

Clock Generator

Circuit

1/32

Timer

On-chip Oscillator

(Max. 40MHz)

Independent Timer Operation

The timer’s count operation is independent of the operation

of the CPU. Even if the CPU is stopped, it is possible to

operate the timer by means of external signals or a subclock

(32kHz, etc.), thereby reducing current consumption.

3-Phase Inverter PWM Output (Applicable to Motor Control Systems)

M16C

Current monitor

Position detection

Encoder input

NMI

Motor

driver

Emergency-stop input

Phase detection circuit

Motor

3-phase inverter PWM output

High-speed

A/D

converter

Two-phase

pulse signal

processing

function

A phase

B phase

Z phase

■ A/D Converter

S/H

AN7

AN0

AN23

AN16

AN33

AN26

A/D Converter

A/D

Converter

Vcc

GND

Vcc

GND

AN EX1

AN EX0

Max. 26-Channel A/D Pins (M16C/62P, 64, 65)

(R32C/118: Max. 34-Channel)

(M16C/30P: Max. 10-Channel)

(M16C/28: Max. 24-Channel)

(R32C/1xx: Max. 34-Channel)

High-Speed A/D Converter with Sample-and-Hold

(1) Conversion Speed (ØAD = 25MHz) (M16C/65) 10-Bit: 1.72 µs

(2) Successive Conversion ±3 LSB Accuracy

(3) High-Speed Sample-and-Hold

10MHz Operation: 0.3 µs, 20MHz Operation: 0.15 µs

Measurement Error Avoidance

(Unused A/D Overvoltage Processing)

This feature helps prevent measurement error due to wraparound

between channels, even if the other A/D inputs include input that

exceeds the VCC level. It also provides more accurate A/D

conversion values.

Improved A/D Converter Characteristics

The M16C/63, M16C/64, and M16C/65 deliver better

A/D conversion accuracy than other M16C models.

VREF Cutoff

The analog circuit reference voltage, VREF, can be turned on or off.

Turning off VREF when the A/D converter is not being used can help

reduce current consumption.

M16C/63, 64, 65

±3 LSB

Max. A/D conversion error

At AVCC

= VREF = 5V

At AVCC

= VREF = 3.3V

At AVCC

= VREF = 3V

Analog input (ANi, ANj_i)

Extended analog input (ANEXi)

Analog input (ANi, ANj_i)

Extended analog input (ANEXi)

Analog input (ANi, ANj_i)

Extended analog input (ANEXi)

Better

accuracy

Better

accuracy

Better

accuracy

Better

accuracy

Better

accuracy

VREF

OFF

Analog Input

AVSS

Resistor

A/D Converter

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 45 46

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