TMP86FS49AIUG datasheet(35/296 Pages) TOSHIBA

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TMP86FS49AIUG

Figure 2-7 Level-sensitive Release Mode

Note 1: Even if the STOP pin input is low or the STOP3 to STOP0 pin inputs are high after warm-up start,

the STOP mode is not restarted.

Note 2: In this case of changing to the level-sensitive mode from the edge-sensitive mode, the release

mode is not switched until a rising edge of the STOP pin input is detected.

(2)

Edge-sensitive release mode (RELM = “0”)

In this mode, STOP mode is released by a rising edge of the STOP pin input. This is used in appli-

cations where a relatively short program is executed repeatedly at periodic intervals. This periodic

signal (for example, a clock from a low-power consumption oscillator) is input to the STOP pin. In

the edge-sensitive release mode, STOP mode is started even when the STOP pin input is high level.

Do not use any STOP3 to STOP0 pin inputs for releasing STOP mode in edge-sensitive release

mode.

Example 2 :Starting STOP mode from NORMAL mode with an INT5 interrupt.

PINT5:

TEST

(P2PRD). 0

; To reject noise, STOP mode does not start if

JRS

F, SINT5

port P20 is at high

(SYSCR1), 01010000B

; Sets up the level-sensitive release mode.

; IMF

← 0

SET

(SYSCR1). 7

; Starts STOP mode

SINT5:

RETI

Example :Starting STOP mode from NORMAL mode

; IMF

← 0

(SYSCR1), 10010000B

; Starts after specified to the edge-sensitive release mode

VIH

NORMAL

operation

Warm up

STOP

operation

Confirm by program that the

STOP pin input is low and start

STOP mode.

Always released if the STOP

pin input is high.

STOP pin

XOUT pin

STOP mode is released by the hardware.

NORMAL

operation

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