M38K00MA-16FP datasheet(9/123 Pages) MITSUBISHI

Part #	M38K00MA-16FP

Description	SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

Download	123 Pages

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Manufacturer	MITSUBISHI [Mitsubishi Electric Semiconductor]

Direct Link	http://www.mitsubishichips.com

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9

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

38K0 Group

[CPU Mode Register (CPUM)] 003B16

The CPU mode register contains the stack page selection bit and

the internal system clock selection bit.

The CPU mode register is allocated at address 003B16.

Fig. 7 Structure of CPU mode register

Processor mode bits

b1 b0

0

0 : Single-chip mode

01 :

1

0 :

Not available

11 :

Stack page selection bit

0 : 0 page

1 : 1 page

Not used (returns “1” when read)

(Do not write “0” to this bit)

Not used (returns “0” when read)

(Do not write “1” to this bit)

System clock selection bit

0 : Main clock (XIN)

1 : fSYN

System clock division ratio selection bits

b7 b6

00 :

φ = f(system clock)/8 (8-divide mode)

01 :

φ = f(system clock)/4 (4-divide mode)

10 :

φ = f(system clock)/2 (2-divide mode)

11 :

φ = f(system clock) (Through mode)

CPU mode register

(CPUM : address 003B16)

b7

b0

1

0

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M38K00MA-16FP Datasheet(PDF) 9 Page - Mitsubishi Electric Semiconductor

M38K00MA-16FP Datasheet(HTML) 9 Page - Mitsubishi Electric Semiconductor

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