M38263ECFS datasheet(11/91 Pages) RENESAS

Nome de Peças	M38263ECFS

Descrição Electrónicos	SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

PDF	91 Pages

Scroll/Zoom	100%

Fabricante Electrônico	RENESAS [Renesas Technology Corp]

Página de início	http://www.renesas.com

Logo

11 / 91 page

Rev.1.00

Sep 06, 2006

page 11 of 88

REJ03B0181-0100

3826 Group (One Time PROM version)

[CPU Mode Register (CPUM)] 003B16

The CPU mode register contains the stack page selection bit and

the system clock control bits, etc.

The CPU mode register is allocated at address 003B16.

Fig. 8 Structure of CPU mode register

Processor mode bits

b1 b0

0 : Single-chip mode

1 :

0 :

1 :

Stack page selection bit

0 : 0 page

1 : 1 page

Not used (“1” at reading)

(Write “1” to this bit at writing)

XC switch bit

0 : Oscillation stop

1 : XCIN–XCOUT oscillating function

Main clock (XIN–XOUT) stop bit

0 : Oscillating

1 : Stopped

Main clock division ratio selection bit

0 : f(XIN)/2 (high-speed mode)

1 : f(XIN)/8 (middle-speed mode)

System clock selection bit

0 : XIN–XOUT selected (middle-/high-speed mode)

1 : XCIN–XCOUT selected (low-speed mode)

Do not select

CPU mode register

(CPUM (CM) : address 003B16)

M38263ECFS Folha de dados(PDF) 11 Page - Renesas Technology Corp