EM73C63 datasheet(15/40 Pages) EMC

15 / 40 page

* This specification are subject to be changed without notice.

EM73C63

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

Preliminary

8.11.2000

P22

Initial value : 0000

SOM

Select operation mode

0 0 0

DUAL operation mode

1 * *

SLOW operation mode

P14

Initial value : *000

WKS

LFS CPUS

LFS

Low-frequency status

CPUS

CPU status

LXIN source is not stable

DUAL operation mode

LXIN source is stable

SLOW operation mode

WKS

Wakeup status

Wakeup not by internal timer

Wakeup by internal timer

Port14 is the status register for CPU. P14.0 (CPU status) and P14.1 (Low-frequency status) are read-only

bits. P14.2 (wakeup status) will be set as '1' when CPU is waked by internal timer. P14.2 will be cleared as

'0' when user out data to P14.

IDLE OPERATION MODE

The IDLE operation mode suspends all CPU functions except the low-frequency clock oscillation and the

LCD driver. It keeps the internal status with low power consumption without stopping the slow clock

oscillator and LCD display.

LCD display is available for the IDLE operation mode. Sound generator is disabled in this mode. The IDLE

operation mode will be wakeup and return to the SLOW operation mode by the internal timing generator or

I/O pins (P0(0..3)/WAKEUP 0..3 and P8(0..3)/WAKEUPA..D).

P19

Initial value : 0000

IDME

SIDR

IDME

Enable IDLE mode

SIDR

Select IDLE releasing condition

Enable IDLE mode

0 0

P0(0..3), P8(0..3) pin input

no function

0 1

P0(0..3), P8(0..3) pin input and 1 sec signal

1 0

P0(0..3), P8(0..3) pin input and 0.5 sec signal

1 1

P0(0..3), P8(0..3) pin input and 15.625 ms signal

STOP OPERATION MODE

The STOP operation mode suspends system operation and holds the internal status immediately before the

suspension with low power consumption. This mode will be released by reset or I/O pins (P0(0..3)/

WAKEUP 0..3 and P8(0..3)/WAKEUP A..D).

LCD display and sound generator are disabled in the STOP operation mode.

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