W742C814 データシートの表示（PDF） - Winbond

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コンポーネント説明

メーカー

W742C814

4-BIT MICROCONTROLLER

Winbond 

W742C814

SEF.0 = 1

SEF.1 = 1

SEF.2 = 1

SEF.3 = 1

Device will exit stop mode when falling edge signal is applied to pin RC.0

Device will exit stop mode when falling edge signal is applied to pin RC.1

Device will exit stop mode when falling edge signal is applied to pin RC.2

Device will exit stop mode when falling edge signal is applied to pin RC.3

6.14 Hold Mode Operation

In hold mode, all operations of the µC cease, except for the operation of the oscillator, Timer, Divider,

LCD driver, DTMF generator and MFP generator. The µC enters hold mode when the HOLD

instruction is executed. The hold mode can be released in one of five ways: by the action of timer 0,

timer 1, divider 0, divider 1, the RC port. Before the device enters the hold mode, the HEF, PEF, and

IEF flags must be set to define the hold mode release conditions. For more details, refer to the

instruction-set table and the following flow chart.

Divider 0, Divider 1, Timer

0, Timer 1, Signal Change

at RC Port

Yes

Interrupt

Enable?

Yes

IEF

Flag Set?

Yes

No

No

In

No

HOLD

Mode?

No

Interrupt

Enable?

Yes

IEF

No

Flag Set?

Yes

Reset EVF Flag

Execute

Interrupt Service Routine

(Note)

HEF

Flag Set?

Reset EVF Flag

Execute

Interrupt Service Routine

No

Yes

(Note)

Disable interrupt

Disable interrupt

HOLD

PC <- (PC+1)

Note: The bit of EVF corresponding to the interrupt signal will be reset.

Figure 6-9 Hold Mode and Interrupt Operation Flow Chart

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Publication Release Date: February 12, 2003

Revision A2

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