P11/13

Preliminary, November 2008

ML2002 Preliminary

Note : 1. In cascade format of ML2002(ie. ML2002-2U and –3U), one pin is the input of current ML2002

and the other is for the connection with the corresponding input pin of next ML2002.

2. Condition : FIN = 32 KHz Clock.

Pin Description

SYMBOL

PAD

DESCRIPTION

BRES

I

External reset input (active LOW)

LGND

-

Logic Ground

INT

I

Alarm interrupt output

LVDD

-

Logic Supply voltage

MS

I

Input “0”, for slave mode

DIN

I

Data line input

DCLK

I

Data clock input

LAI

I/O

It is an input pin which LOAD the display onto the LCD screen during rising edge.

LAO

O

Send out LOAD signal to the cascade slave ML2002 for displaying data onto LCD

screen.

CEI

I

Enable Chip for receive data/command in the DIN pin

CEO

O

Send out chip enable signal to the following cascade slave IC

DOUT

O

Data output from the display data RAM

CNT

I

Input clock, count number of rising edge clock

Q15

O

FIN

I

32768Hz Oscillator input

4,2,1Hz

O

4, 2, 1Hz clock output

256/125 Hz

O

125Hz clock output for static/ 250 clock output for 1/2 duty

125/62 Hz

O

62Hz clock output for static/125 clock output for 1/2 duty

LCLK

I

LCD Clock signal frequency

SEG1 .. SEG48

O

Segment output

COM1A / B

O

Common output

PVDD

-

Power VDD supply

1/2 PVDD

I

1/2 PVDD LCD driving voltage

1/2 Duty

I

“1” – Halfduty, “0” – Static

A

B

CEN1

I

Common Enable. “0” – Enable, “1” – Disable

T0

I

Test mode. “0” – Normal mode, “1” – Testing Mode

OOUT

O

32K internal clock output

COEN

I

Crystal oscillator enable. “0” – Enable, “1” – Disable

IOEN

I

32K internal clock enable. “0” – Enable, “1” – Disable

HPVDDEN

I

1/2 PVDD enable. “0” – Enable, “1” – Disable

BEN

I

Blink control circuit enable “0” – Enable, “1” – Disable

BCLK

I

Blink clock input

OSC+ / -

I

Crystal oscillator input

SYNC

I/O

To synchronize COMMON signal to the following cascade IC

TFI

I

Master mode 2/4 pin interface, “1” - 2pin , “0” - 4pin

SYEN

I

SYNC enable. SYEN is “1” – SYNC output, “0” – SYNC will be high impredence.

TOUT

O

When select 4pin interface, it would output timer data.

DUM1,2,3

-

Dummy Pad, Left it open only