UPD753036 datasheet(39/88 Pages) NEC

39 / 88 page

µPD753036, 753036(A)

Data Sheet U11353EJ4V0DS00

8. STANDBY FUNCTION

In order to save power consumption while a program is in a standby mode, two types of standby modes (STOP

mode and HALT mode) are provided for the

µPD753036.

Table 8-1. Operation Status in Standby Mode

STOP Mode

HALT Mode

Set instruction

STOP instruction

HALT instruction

System clock when set

Settable only when the main system

Settable both by the main system

clock is used.

clock and subsystem clock.

Operation

Clock generator

The main system clock stops oscillation.

Only the CPU

Φ halts (oscillation

status

continues).

Basic interval timer

Operation stops

Operation. (The IRQBT is set in the

reference interval) Note 1.

Serial interface

Operable only when an external SCK

Operable Note 1

input is selected as the serial clock.

Timer/event counter

Operable only when a signal input to

Operable Note 1

the T10-T12 pins is specified as the

count clock.

Watch timer

Operable when fXT is selected as the

Operable

count clock.

LCD driver controller

Operable only when fXT is selected as

Operable

the LCDCL.

External interrupt

The INT1, 2, and 4 are operable.

Only the INT0 is not operated. Note 2

CPU

The operation stops.

Release signal

• Interrupt request signal sent from the operable hardware enabled by the

interrupt enable flag.

• Test request signal sent from the test source enabled by the test enable flag

• RESET signal

Notes 1.

Cannot operate only when the main system clock stops.

Can operate only when the noise eliminator is not used (IM02 = 1) by bit 2 of the edge detection mode

UPD753036 Datasheet(PDF) 39 Page - NEC

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