M30620FCAFP datasheet(320/615 Pages) RENESAS

Part #	M30620FCAFP

Description	16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

PDF	615 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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320 / 615 page

Mitsubishi microcomputers

M16C / 62A Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Protect

2-3

Figure 2.1.1. Protect register

Protect register

Symbol

Address

When reset

PRCR

000A16

XXXXX0002

Bit name

Bit symbol

0 : Write-inhibited

1 : Write-enabled

PRC1

PRC0

PRC2

Enables writing to processor mode

registers 0 and 1 (addresses 000416

and 000516)

Function

0 : Write-inhibited

1 : Write-enabled

Enables writing to system clock

control registers 0 and 1 (addresses

000616 and 000716

)

Enables writing to port P9 direction

control register (i=3,4) (addresses

036216 and 036616) (Note

)

0 : Write-inhibited

1 : Write-enabled

Nothing is assigned.

In an attempt to write to these bits, write “0”. The value, if read, turns out to be

indeterminate.

Note: Writing a value to an address after “1” is written to this bit returns the bit

to “0” . Other bits do not automatically return to “0” and they must therefore

be reset by the program.

M30620FCAFP Datasheet(PDF) 320 Page - Renesas Technology Corp

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