M38K09RFS datasheet(223/328 Pages) RENESAS

Part #	M38K09RFS

Description	RENESAS 8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 38000 SERIES

PDF	328 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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223 / 328 page

2.12 Standby function

Rev.2.00

Oct 05, 2006

page 94 of 111

38K0 Group

REJ09B0337-0200

APPLICATION

2.12 Standby function

The 38K0 group is provided with standby functions to stop the CPU by software and put the CPU into the

low-power operation.

The following two types of standby functions are available.

•Stop mode using STP instruction

•Wait mode using WIT instruction

2.12.1 Memory map

Fig. 2.12.1 Memory map of registers related to standby function

2.12.2 Related registers

Fig. 2.12.2 Structure of MISRG

MISRG (MISRG)

0FFB16

b7 b6 b5 b4 b3 b2 b1 b0

R W

Name

Functions

At reset

MISRG

(MISRG: address 0FFB16)

MISRG

0 : Automatically set “0116” to Timer 1,

“FF16” to Prescaler 12

1 : Automatically set nothing

Nothing is arranged for these bits. These are write disabled bits.

When these bits are read out, the contents are indefinite.

Oscillation stabilizing time

set after STP instruction

released bit

M38K09RFS Datasheet(PDF) 223 Page - Renesas Technology Corp