EM73P968 datasheet(19/53 Pages) EMC

19 / 53 page

* This specification are subject to be changed without notice.

EM73P968

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

8.14.2001

Preliminary

P22 3

210

Initial value : 0000

SOM

Low-frequency

000

2^3/LXIN RC solw to normal

001

2^4/LXIN RC solw to normal

010

2^11/LXIN X'tal slow to normal

011

2^12/LXIN X'tal slow to normal

1**

normal to slow

P14

Initial value : *000

INT2_S WKS SPI_F CPUS

SPI_F

SPI_Flag

CPUS

CPU status

SPI register is empty

NORMAL operation mode

SPI register is full

SLOW operation

WKS

Wakeup status

Wakeup not by internal timer

Wakeup by internal timer

Port14 is the status register for CPU. P14.0 (CPU status) and. P14.2 (wakeup status) will be set to "1" when

CPU is wake-up by internal timer. P14.2 will be cleared to "0" when user out data to P14. INT2_S is low, the

program address "0004H" is the interrupt entry address of HTCI. INT2_S is high, the program address

"0004H" is the interrupt entry address of ADI.

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. 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, P1(0..3)/

WAKEUP 4..7, P2(0..3)/WAKEUP 8..11, P4(0..3)/WAKEUP 12..15, P5(0..3)/WAKEUP 16..19, P6(0..

3)/WAKEUP 20..23, P7(0..3)/WAKEUP 24..27, P8(0..3)/WAKEUPA..D, P11(0..3)/WAKEUP 28..31,

and P15(0..3)/WAKEUP 32..35).

P19

Initial value : 0000

IDME

SIDR

IDME

Enable IDLE mode

SIDR

Select IDLE releasing condition

0 1

Enable IDLE mode

0 0

P0,P1,P2,P4,P5,P6,P7,P8,P11,P15 pin input

* *

no function

0 1

P0,P1,P2,P4,P5,P6,P7,P8,P11,P15 pin input and 1 sec

signal

1 0

P0,P1,P2,P4,P5,P6,P7,P8,P11,P15 pin input and 0.5 sec

signal

1 1

P0,P1,P2,P4,P5,P6,P7,P8,P11,P15 pin input and 15.625

ms signal

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