M38270E1-XXXFP View Datasheet(PDF) - MITSUBISHI ELECTRIC

Part Name

Description

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M38270E1-XXXFP

Single-chip 8-bit CMOS microcomputer. PROM 61440 bytes, RAM 2048 bytes. One time PROM version.

MITSUBISHI ELECTRIC  

b7

b0

PWM control register

(PWMCON : address 002B16)

Count source selection bit

0 : f(XIN)

1 : f(XIN)/2

PWM0 function enable bit

0 : PWM0 disabled

1 : PWM0 enabled

PWM1 function enable bit

0 : PWM1 disabled

1 : PWM1 enabled

Not used (return “0” when read)

Fig. 31 Structure of PWM control register

MITSUBISHI MICROCOMPUTERS

3827 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

A

B

PWM

stop

(internal)

T

T

PWM0 output Port

C

B

T

=

C

T2

stop

T2

Port

PWM1 output

Port

Port

PWM register

write signal

(Changes from “A” to “B” during “H” period)

PWM prescaler

write signal

(Changes from “T” to “T2” during PWM period)

PWM0 function

enable bit

PWM1 function

enable bit

When the contents of the PWM register or PWM prescaler have changed, the PWM

output will change from the next period after the change.

Fig. 32 PWM output timing when PWM register or PWM prescaler is changed

32

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