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Toshiba H1 SERIES TLCS-900 User Manual

Page 28

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TMP92CM22

2007-02-16

92CM22-26

c. STOP mode

When STOP mode is selected, all internal circuits stop, including the internal

oscillator pin status in STOP mode depends on the settings in the
SYSCR2 register. Table 3.3.5, Table 3.3.6 shows the state of
these pins in STOP mode.

After STOP mode has been released system clock output starts when the

warm-up time has elapsed, in order to allow oscillation to stabilize. Warm-up time
set by SYSCR2 register. See the sample warm-up times in Table
3.3.4.

Figure 3.3.8 illustrates the timing for release of the STOP mode halt state by an

interrupt.

Interrupt of

releasing halt

Data

Data

STOP

mode

X1

A0 to A23

D0 to D15

RD

WR

Warm-up time

Figure 3.3.8 Timing Chart for STOP Mode Halt State Released by Interrupt

Table 3.3.4 Sample Warm-up Times after Rrelease of STOP Mode

at f

OSCH

= 10 MHz

SYSCR2

01 (2

8

) 10

(2

14

) 11

(2

16

)

25.6

μs

1.638 ms

6.554 ms

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