Datasheet EM32100 Datasheet (ELAN)

GENERAL DESCRIPTION

The EM32100 is a CMOS LCD display driver which can receive dialing data from dialer IC and display on
the LCD panel. The EM32100 can also display real time clock, conversation time (stopwatch).

FEATURES

• Drive 8/10 digits LCD panel.

• Display dialing number.

• Display real time clock (RTC) in 12 hour or 24 hour format selectable.

• Stopwatch function for counting conversation time up to 59 minutes 59 seconds.

• Operating voltage: 1.5 VDC ( typical )

• Operating current : 3 µA (max.)

• LCD driver method : 1/3 duty , 1/2 bias.

• Internal voltage doubler circuit for drive LCD.

• Internal dialer interface.

• Use single colck 32768Hz crystal.

• Package in QFP 48 pins or chip form .

EM32100

EM32100

8/10 DIGIT LCD DRIVER

8/10 DIGIT LCD DRIVER

APPLICATION FIELD

Telephone and Digital display system.

PIN ASSIGNMENTS

V
SEG24
SEG23
SEG22
SEG21
SEG20
SEG19
SEG18
SEG17

NC
VP
VN

NC

ENRTC

24/12

121110

13
14
15

EE

16
17
18
19
20
21
22
23
24

2526272829303132333435

SEG16

SEG15

SEG14

VSS

XOUTNCXIN

VDDHKS

SDI

987654321

EM32100

NC

SEG9

SEG10

SEG8

SEG13

SEG12

SEG11

MS2

SEG7

MS1

48
47
46
45
44
43
42
41
40
39
38
37

36

SEG6

NC
F32H
TESTI
TEST2
COM3
COM2
COM1
SEG1
SEG2
SEG3
SEG4
SEG5

* This specification are subject to be changed without notice.

2.10.1999

1

FUNCTION BLOCK DIAGRAM

EM32100

8/10 DIGIT LCD DRIVER

SDI

XIN

XOUT

VDD

VSS

COM1~3

1/3 Duty 1/2 Bias LCD Driver

Serial

Data

Samplin
Decoding

Sampling

Signal

Generator

OSC.

Power
Supply

Circuit

VP

VEE

&

VN

Serial

Display

SEG1~24

Data

Buffer

RTC/STW

Counter

Timing

&

Control

Circuit

ENRTC*
24/12
HKS*

*
MS2
MS1
F32HZ
TESTI*

PIN DESCRIPTIONS

Symbol Function

MS1 RTC (Real Time Clock ) manual setting pin 1 (internal pull up resistor typ. 150kΩ,debounce

time=15.6ms)

MS2 RTC ( Real Time Clock ) manual setting pin 2 ; internal pull up resistor : idle ( On-Hook ) =

5MΩ , normal ( Off- Hook ) = 150kΩ ; at idle and normal state , debounce time=15.6ms ,
at test mode state , no debounce time )

SDI Serial data input pin ( internal pull up resistor = 5 MΩ)
HKS Hook switch status input pin. ( This pin "High",On-Hook ; "Low",Off-Hook )

V

DD

XIN,XOUT Crystal input and output pins(crystal=32768Hz)
V

SS

24/12 RTC display 24 or 12 hours format select pin.(This pin "high",24 hours form;"low",12

ENRTC RTC enable or disable detect pin. ( This pin detect "high", RTC disable; "low" , RTC

VEE,VP,VN Voltage doubler circuit for LCD driver ( DC-DC frequency conversion=1024Hz )
SEG1~SEG24 LCD panel driver segment output pins

COM1~COM3 LCD panel driver common output pins ( Frame Frequency= 34.13 Hz).
TEST2 No connection , reserve for testing
TESTI Enter test mode detect pin
F32H Signal 32 Hz output for testing ,NMOS open drain structure

Power supply pin

Power supply pin

hours form,input pin)

enable , input pin )

* This specification are subject to be changed without notice.

2.10.1999

2

The relationship between ENRTC and EM32100 system LCD display method is as follows:

ON-HOOK (HKS="High") OFF-HOOK(HKS="Low")

ENRTC="High" blank dialing number

STW

ENRTC="Low" RTC dialing number

STW
RTC

LCD Panel Description

EM32100

8/10 DIGIT LCD DRIVER

SEG24 SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17
COM3 9a 10f 10b 9f 9b 8f 8b 6a
COM2 8a 10e 10g 9e 9g 8e 8g 5a
COM1 10a 10d 10c 9d 9c 8d 8c 7a

SEG16 SEG15 SEG14 SEG13 SEG12 SEG11 SEG10 SEG9
COM3 7f 7b 6f 6b 5f 5b 3a 4f
COM2 7e 7g 6e 6g 5e 5g 2a 4e
COM1 7d 7c 6d 6c 5d 5c 4a 4d

SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1
COM3 4b 3f 3b 2f 2b 1f 1b AM
COM2 4g 3e 3g 2e 2g 1e 1g PM
COM1 4c 3d 3c 2d 2c 1d 1c 1a

* This specification are subject to be changed without notice.

2.10.1999

3

EM32100

8/10 DIGIT LCD DRIVER

<Note>:

If SEG20~23 are not used, then it can be used as an 8 digits LCD display driver.

Serial Data Interface

When the EM32100 senses the falling edge of the Start bit, it will sample subsequent bits in the middle of
each bit. The received bit will then be assembled and decoded, and corresponding pattern will be displayed
on LCD panel. The serial data format is as follows:

0

Start bit

The frequence of every bit is 256Hz ( about 3.9 ms)
There are two categories of dialing data, and representation of serial data is as the following:

* This specification are subject to be changed without notice.

1

Bit0

Bit1

Bit2

Data bits

Bit3

Bit4 Bit5

0

Stop bit

1

2.10.1999

4

8/10 DIGIT LCD DRIVER

F

F

T

F

F

T

F

T

F

T

F

F

T

T

T

F

F

F

T

T

T

T

F

F

T

T

T

T

F

D

ataValid?

27

RTC Mod

e

24

6Sec.Exp

ire

?

21

D

ataVali

d

?

20

D

ataIn?

19

6Sec.Exp

ire

?

18

HKS = 1?

17

S

tart Timer

16

DisplayDialing

No.

15

D

ataVali

d?

14

HKS=0

13

S

tartTimer

12

MS1 = 0?

11

D

ata i

n?

10

HKS = 1?

9

Display

RTC

8

MS1 = 0

7

MS2 = 0?

6

D

ataIn?

5

HKS = 1?

4

STW Display

3

R

eset S

TW

2

S

tart

1

T

F

MS2 = 0 ?

F

T

MS1=0?

MS2=0?

T

F

F

T

(b5b4 = 00) Digit key
Key 1234567890*#PP→T
b3b2b1b0 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110
Display 1 2 34567890 P

(b5b4 = 10 ) function key
Key F
b3b2b1b0 1111
Display

Note:

1. Flash key will be treated as "clear LCD panel" command.

2. Any invalid data will be ignored by the EM32100.

FUNCTION DESCRIPTION

Dialing dispaly

EM32100

The serial data received by SDI pin of EM32100 will be decoded and shown on LCD panel. Display format
is as follows:

Off-Hook state mode:

* This specification are subject to be changed without notice.

2.10.1999

5

RTC (Real time clock) display

12 hours format:

24 hours format:

EM32100

8/10 DIGIT LCD DRIVER

<Note>:

12 or 24 hours format is selected by 24/12 pin. When this pin is pulled "high", then RTC is displayed in 24
hours format, otherwise RTC is displayed in 12 hours format. The AM, PM patterns will not show for RTC
display in 24 hours format.

STW (stop watch ) display

When HKS pin is high, the system work in RTC display mode .When HKS pin switches from "high" to "low",
the system enter STW display mode.STW count up from 00:00 up to 59:59. For example:

* This specification are subject to be changed without notice.

2.10.1999

6

EM32100

F

T

F

F T

F

F

F T

T

F

T

T

T

T

F

S

top Watch

M

ode

1

0

Minute +1

9

MS2 = L

o?

8

MS1 = L

o?

7

HKS=0?

6

Minute Flash and reset second

5

Hour +1

9

MS2 = L

o?

8

MS1 = L

o?

7

HKS=0 ?

6

Hour Flash

5

MS1 = L

o?

4

HKS=0 ?

3

RTC D

isplay

2

S

tart

1

8/10 DIGIT LCD DRIVER

Setting RTC

With the HKS pin at "high", RTC can be set up by operating MS1 and MS2 pins as described as in the following:

1.In on-Hook state, press MS1, hour digit will flash,

2. Press MS2 to count up data.

3.Press MS1 once again, move to minute digit, digit flash, and reset second.

4.Press MS2 to count up minute digit.

5.Press MS1 again to finish RTC set up.

<Note>:

1. If MS2 are pressed and hold for over 2 sec ,then data automatically count up in every 0.5 sec.

2. Digit flash time is 1 Hz (0.5 sec on, 0.5 sec off)

RTC setup Flowchart:

* This specification are subject to be changed without notice.

2.10.1999

7

EM32100

8/10 DIGIT LCD DRIVER

RTC display and STW reset at Off-hook state

1.When at On-hook state,operating MS1 and MS2 can setup RTC.

2.When at Off-hook state,operating MS1 and MS2 can display RTC and clear STW.

Describe as following table:

HKS="high" HKS="low"
MS1 Select RTC setup position Toggle display RTC/STW
MS2 Count up hour or minute data Reset STW

Testing operating

The F32HZ pin is a 32 Hertz clock source. This pin is intended to support LCD module testing in production
line in the following two ways:

1. F32HZ can be connected to MS2 pin and, by operating the MS1 pin, can be used to test RTC setting
function.

2.At off-HOOK state; In the TEST mode (the TEST pin is at "Low" level), the SDI pin sampling signal frequency

is 32 Hz. F32HZ pin can be connected to SDI pin and with each reception of SDI data of "0" key, the LCD
will display "1", "2", ..., "9", *, #, P,P→T with each digit shifted left sequentially. Then the LCD panel goes
blank, AM,PM goes on, and finally all patterns go on. And this sequence will repeat again.

F32HZ

SDI

0

0

1

Bit 0

Start bit

• After entering test mode and 6 digits of "0" are received, the LCD panel is as follows:

•

Then 8 more digits of “0” are received, the LCD panel is as follows:

•

Then the LCD panel will go blank.

1

Bit 1

0

Bit 2

1

Bit 3

0

Bit 4

1

Bit 5

0

1

Stop bitData bits

* This specification are subject to be changed without notice.

2.10.1999

8

•

Turn on “AM”indicator

AM

•

Then turn on “PM”indicator

PM

PM

•

Finally all patterns are turned on.

AM

EM32100

8/10 DIGIT LCD DRIVER

PM

• Then the sequence will repeat all over again.

ABSOLUTE MAXIMUM RATINGS

Items Sym. Condition Rating

Supply voltage V
Input voltage V

Output voltage V

DD

IN

O

Except open-drain - 0.5V to VEE+0.5V

- 0.5V to 1.5V

- 0.5V to VDD+0.5V

Open-drain -0.5 V to 3V
Output current I
Power dissipation P
Operating temperature T
Storage temperature T

O

D

OPR

STR

Others 3.2 mA

T

= 50oC 300 mW

OPR

0oC to 50oC

-55oC to 125oC

RECOMMENDED OPERATING CONDITIONS

1. Supply voltage at 1.5V D.C.

2. Operation frequency fosc : 32768 Hz.

* This specification are subject to be changed without notice.

2.10.1999

9

EM32100

8/10 DIGIT LCD DRIVER

DC AND AC ELECTRICAL CHARACTERISTICS (fosc=32768 Hz,V

=1.5V)

DD

Parameter Sym. Condition Min. Typ. Max. Unit

Operating voltage V

V

Operating current (no load) I

DD

EE

DD

1.2 1.5 1.8 V

2.4 3 3.6 V

- 1.5 3 µA
Power on
crystal start oscillation voltage V
Input voltage V

V

Standby current (ENRTC=H) I
Input pins pull-up resistor R

START

IH

IL

STBY

I

1.3 1.5 1.8 V

VDD-0.3 - V

V

SS

-VSS+0.3 V

DD

--1µA

- 150 - KΩ
(MS1, TestI pins)

MS2 pin input resistance R

SDI pin input resistance R
SDI input data every bit time T

I

I

BIT

HKS=1, VI=V
HKS=0, V
VIN=V

I=VSS

SS

SS

-5-MΩ

- 150 - KΩ

-5-MΩ

3.8 3.9 4.1 mS

Oscillator frequency fosc. - 32768 - Hz

V

Oscillator start time T

START

VDD=1.45 - - 2 Sec.
Common/Segment pins
Source curent I
Sink current I
F32HZ pin sink current I

OH

OL

S

VO=VEE-0.5V 6 - - µA

VO=0.5 6 - - µA

VO=0.5V 0.2 0.5 - mA
HKS, MS1, TESTI, MS2 Tdb V

(not at test mode), input pin
debouce time

=0.5V - 15.6 - mS

O

* This specification are subject to be changed without notice.

2.10.1999

10

APPLICATION CIRCUIT

8/10 Digits LCD Pannel

EM32100

8/10 DIGIT LCD DRIVER

.1µ

.1µ

CC

NC
ENRTC
24/12
V

SS

XOUT
NC
XIN

DD

V
HKS
SD1
MS2
MS1

V

12
11

10
9
8
7
6
5
4
3
2
1

2423222120191817161514

SEG17

SEG18

SEG19

SEG20

SEG21

SEG22

SEG23

SEG16

25

SEG15

26

SEG14

27

SEG13

28

SEG12

29

SEG11

30

SEG10

31

NC

32

SEG9

33

SEG8

34

SEG7

35

SEG6

36

EM32100

EE

V

SEG24

VN

VP

13

NC

1.5V

20p

32768Hz

20p

SEG5

SEG4

SEG3

SEG2

SEG1

COM1

COM2

COM3

TEST2

TEST1

3738394041424344454647

1

F32H

48

2

NC

100k

3

200k

DD

V

220k

HKS

SDO

220k

C945

3

1

2

1µ

47kDIODE

2

2

2

DIODE

1

2

C945

3

HDO

1

HFO

SS

V

100k

1

DIODE

* This specification are subject to be changed without notice.

2.10.1999

11

PAD DIAGRAM

EM32100

8/10 DIGIT LCD DRIVER

VP

VN

V

SEG24

SEG23

SEG22

SEG21

SEG20

SEG19

SEG18

SEG17

XIN

6

SEG12

DD

V

5

(0,0)

31

SEG11

HKS

4

33 34

SEG10

SDI

3

SEG9

MS2

2

SEG8

MS1

1

35

SEG7

47

46

45

44

43
42

36

41

40

39

38

37

SEG6

F32H

TESTI

TEST2

COM3

COM2
COM1

SEG1

SEG2

SEG3

SEG4

SEG5

SS

XOUT

V

24/12

ENRTC

14

15

16

EE

17

18

19

20

21

22

23

24

26 27

25

SEG16

11

SEG15

10

SEG14

9

8

EM32100

28 29 30

SEG13

Chip Size : 2230 x 2480 µm

Pad No. Symbol X Y

1 MS1 712.8 992.2
2 MS2 561.6 992.2
3 SDI 412.2 992.2
4 HKS 261.0 992.2
5V

DD

103.5 1012.0
6 XIN -59.5 992.2
7
8 XOUT -209.8 1006.2
9V

SS

-371.8 1006.2
10 24/12 -523.9 992.2
11 ENRTC -673.3 992.2
12
13
14 VP -917.2 1033.6
15 VN -917.2 884.2
16 V

EE

-931.2 733.3
17 SEG24 -949.2 552.1
18 SEG23 -949.2 371.7
19 SEG22 -949.2 191.3
20 SEG21 -949.2 11.0

* This specification are subject to be changed without notice.

2.10.1999

12

8/10 DIGIT LCD DRIVER

Pad No. Symbol X Y

21 SEG20 -949.2 -169.4
22 SEG19 -949.2 -349.7
23 SEG18 -949.2 -530.1
24 SEG17 -949.2 -710.5
25 SEG16 -895.7 -1074.2
26 SEG15 -715.3 -1074.2
27 SEG14 -535.0 -1074.2
28 SEG13 -354.6 -1074.2
29 SEG12 -174.2 -1074.2
30 SEG11 6.1 -1074.2
31 SEG10 186.5 -1074.2
32
33 SEG9 366.8 -1074.2
34 SEG8 547.2 -1074.2
35 SEG7 727.6 -1074.2
36 SEG6 907.9 -1074.2
37 SEG5 949.1 -723.1
38 SEG4 949.1 -542.7
39 SEG3 949.1 -362.3
40 SEG2 949.1 -182.0
41 SEG1 949.1 -1.6
42 COM1 917.1 237.0
43 COM2 917.1 388.2
44 COM3 917.1 539.4
45 TEST2 903.1 695.6
46 TESTI 903.1 845.0
47 F32H 903.1 996.2
48

EM32100

* This specification are subject to be changed without notice.

2.10.1999

13