TMP88CS38BFG datasheet(18/218 Pages) TOSHIBA

18 / 218 page

TMP88CS38B/CM38B/CP38B

2007-09-12

88CS38B-18

IDLE mode includes a normal release mode and an interrupt release mode. Selection

is made with the interrupt master enable flag (IMF). Releasing the IDLE mode returns

from IDLE to NORMAL.

a. Normal release mode (IMF

= “0”)

IDLE mode is released by any interrupt source enabled by the individual

interrupt enable flag (EF) or an external interrupt 0 ( INT0 pin) request.

Execution resumes with the instruction following the IDLE mode start instruction

(e.g., [SET (SYSCR2).4]). Normally, IL (Interrupt latch) of interrupt source to

release IDLE mode must be cleared by load instructions.

b. Interrupt release mode (IMF

= “1”)

IDLE mode is released and interrupt processing is started by any interrupt

source enabled with the individual interrupt enable flag (EF) or an external

interrupt 0 ( INT0 pin) request. After the interrupt is processed, the execution

resumes from the instruction following the instruction which started IDLE mode.

Note:

When a watchdog timer interrupt is generated immediately before the IDLE mode is

started, the watchdog timer interrupt will be processed but IDLE mode will not be

started.

TMP88CS38BFG Datasheet(PDF) 18 Page - Toshiba Semiconductor