M38B53M4-059FP datasheet(58/69 Pages) MITSUBISHI

Part #	M38B53M4-059FP

Description	SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER????

PDF	69 Pages

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Manufacturer	MITSUBISHI [Mitsubishi Electric Semiconductor]

Direct Link	http://www.mitsubishichips.com

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58 / 69 page

MITSUBISHI MICROCOMPUTERS

38B5 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

PRELIMINAR

Notice:

This

is not

a final

specification.

Some

parametric

limits

are

subject

to change.

Fig. 70 Clock Generating Circuit Block Diagram

WIT instruction

STP instruction

Timing

φ (internal clock)

STP instruction

Main clock stop bit

(Note 3)

1/4

XIN

XOUT

XCOUT

XCIN

Interrupt request

Reset

Interrupt disable flag l

1/2

Port XC

switch bit (Note 3)

“1”

“0”

“1”

Timer 1 count source

selection bit (Note 2)

Low-speed mode

High-speed or

middle-speed

mode

Middle-speed mode

High-speed or

low-speed mode

Internal system clock

selection bit (Notes 1, 3)

“1”

“0”

Timer 1

Timer 2

Timer 2 count source

selection bit (Note 2)

“0”

Main clock division ratio

selection bits (Note 3)

“1”

“0”

“1”

“0”

Notes 1: When low-speed mode is selected, set the port Xc switch bit (b4) to “1.”

2: Refer to the structure of the timer 12 mode register.

3: Refer to the structure of the CPU mode register.

M38B53M4-059FP Datasheet(PDF) 58 Page - Mitsubishi Electric Semiconductor

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