Datasheet HT1616C Datasheet (HANTRONIX)

Timer with Dialer Interface

Patent Number: 84545 (R.O.C.)

Features

·

Operating voltage: 1.2V~1.7V

·

Low operating current: 4mA typ.

·

Dialing number and conversation time display

·

Conversation timer (59 mins and 59 secs max.)

·

12 or 16 digits LCD display driver; 3V, 1/2 bias, 1/3
duty

·

Real time clock

Applications

·

Timers, clocks and watches

·

LCD display drivers

General Description

The HT1616C is a CMOS chip designed for dialer inter
faces driving 12 or 16-digit LCDs. Various functions,
such as real time clock, dialing number and conversa
tion time display are provided.

For HT1616C the real time is displayed by default.
When answering a telephone call, the timer is activated
to tell users how long the conversation has taken. After
the telephone is hung up, the total conversation time is

Patent Pending: 08/214, 079 (U.S.A.)

HT1616C

·

Stop watch

·

Built-in dialer interface

·

12-hour or 24-hour format

·

Two-button sequential operation for real
time clock setting

·

Uses 32768Hz crystal

·

Telephone display interface

·

Instrument display

shown for about 5 seconds and the real time is dis

­played again. When making a phone call, the HT1616C
receives dialing data from the dialer and displays the

­phone number from left to right on the LCD. However, if
there is no dialing action within 10 seconds, it restarts
the timer again. By adding a TIMER key, the IC can pro­vide stopwatch and timer reset/hold functions. Refer to
the functional description for details.

-

Block Diagram

SK

TIM ER

12/24

HK

X1

X2

T1

T2

S2

S1

DI

Tim e
Base

Tim er

Shift

R egister

State

C ontrol

C ontrol

Circuit

RES

Com m on

Circuit

D ecoder

&

MUX

Scan

CKT

Voltage
D oubler

Segm ent

Latch

&

Select

IN T

COM 1

COM 2

COM 3

VA

VB

VC

SEG1

SEG 48

Rev. 1.10 1 September 13, 2001

Pad Assignment

HT1616C

SEG26

SEG25

SEG24

SEG23

SEG22

SEG21

SEG20

SEG19

SEG18

SEG17

SEG16

SEG15

SEG14

SEG13

SEG12

SEG11

SEG10

SEG9

SEG8

SEG7

SEG6

SEG5

SEG4

SEG3

SEG2

SEG1

COM 3

COM 1

HK

S1

CLR

MODE

12/24

S2

CLK

DI

70

69

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

205521562257235824

VB

VA

VSS

IN T

RESET

X2

X1

T2

T1

Chip size: 140.1 ´ 137.2 (mil)

592560

(0 ,0 )

2661276228632964306531663267336834

SEG 45

SEG 46

SEG 47

SEG 48

COM 2

VDD

VC

2

35

SEG 42

SEG 43

SEG 44

* The IC substrate should be connected to VDD in the PCB layout artwork.

51175218531954

50

SEG27

SEG28

49

SEG29

48

47

SEG30

46

SEG31

45

SEG32

44

SEG33

43

SEG34

42

SEG35

SEG36

41

SEG37

40

39

SEG38

38

SEG39

SEG40

37

36

SEG 41

Pad Coordinates Unit: mil

Pad No. X Y Pad No. X Y Pad No. X Y

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

1
2
3
4
5
6
7
8
9

-64.47

-64.47

-64.47

-64.47

-64.47

-64.47

-64.47

-64.47

-64.47 -2.03

-64.47 -8.72

-64.47 -15.99

-64.47 -22.68

-64.47 -29.99

-64.47 -37.67

-64.47 -43.99

-64.47 -50.37

-58.69 -61.01

-52.65 -61.01

-46.53 -61.01

-40.41 -61.01

-33.79 -61.01

-27.41 -61.01

-18.80 -61.01

-12.60 -61.01

61.01 25

-4.11 -61.01

50.26 26 4.03

44.29 27 10.00

38.33 28 16.01

32.36 29 22.59

26.01 30 28.63

19.55 31 34.63

13.50 32 40.60
33 46.57
34 52.54
35 58.50
36 64.47
37 64.47
38 64.47
39 64.47
40 64.47
41 64.47
42 64.47
43 64.47
44 64.47 3.79 68
45 64.47 10.29 69
46 64.47 16.41 70
47 64.47 22.91
48 64.47 29.03

-61.01

-61.01

-61.01

-61.01

-61.01

-61.01

-61.01

-61.01

-61.01

-61.01

-61.01

-40.20

-34.08

-27.58

-21.46

-14.95

-8.84

-2.33

49 64.47 35.53
50 64.47 41.65
51 61.60 61.01
52 55.48 61.01
53 48.98 61.01
54 42.86 61.01
55 36.36 61.01
56 30.25 61.01
57 23.73 61.01
58 17.61 61.01
59 11.11 61.01
60 4.99 61.01
61
62
63
64
65
66
67

-1.51

-7.63

-14.13

-20.25

-26.75

-32.88

-39.38

-45.50

-52.00

-58.12

61.01

61.01

61.01

61.01

61.01

61.01

61.01

61.01

61.01

61.01

Rev. 1.10 2 September 13, 2001

Pad Description

Pad Name I/O

SEG1~SEG48 O CMOS OUT LCD segment signal output pads

COM1~COM3 O CMOS OUT LCD common signal output pads

HK

I

S1 I

RES

I

MODE I

12/24

I

S2 I

DI

SK

I

I

T1 I

T2

I

X1 I

X2 O 32768Hz crystal oscillator output

TIMER I

INT

O NMOS OUT Interrupt output, 16Hz (default) or 2Hz (by mask option)

VA O CMOS OUT Voltage doubler, connected to the external capacitor

VB O CMOS OUT Voltage doubler, connected to the external capacitor

VC O CMOS OUT Voltage doubler, connected to the external capacitor

VDD

VSS

¾¾

¾¾

Internal

Connection

CMOS IN

Pull-high

CMOS IN

Pull-low

CMOS IN

Pull-high

CMOS IN

Pull-low

CMOS IN

Pull-low

CMOS IN

Pull-low

CMOS IN

Pull-high

CMOS IN

Pull-high

CMOS IN

Pull-high

CMOS IN

Pull-high

OSCILLATOR

CMOS IN

Pull-low

Description

Hook switch detector input

Clock setting switch
Hour or minute can be selected for S2 adjustment

System initialization pin, active low
The pull-high resistance is 200kW typ.

4 or 5 bits pattern selection pad
VDD: 5 bits pattern
Floating: 4 bits pattern

12-hour or 24-hour format option pad
VDD: 12-hour format
Floating: 24-hour format

Clock adjusting switch
Hour or minutedigits can be adjusted depending upon the S1 selection

Serial data input pad
Data should be valid atthe fallingedge of SK

(connected to the dialer)

Clock input pad (connected to the dialer), active low
Input data is latched at the falling edge of SK

Test pad (connected to VSS for production test)

Test pad (connected to VSS for production test)

32768Hz crystal oscillator input

Timer reset-and-start/hold toggle control input pad

Positive power supply

Negative power supply, ground

HT1616C

Approximate internal connection circuits

CMOS IN

Pull-low

CMOS IN

Pull-high

V

DD

NMOS OUT

CMOS OUT

V

DD

OSCILLATOR

X1

12pF

10M

X2

W

15pF

Rev. 1.10 3 September 13, 2001

HT1616C

Absolute Maximum Ratings

Supply Voltage ...........................................-0.3V to 5V

Input Voltage ............................ V

-0.3V to VDD+0.3V

SS

Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may

cause substantial damage to the device. Functional operation of this device at other conditions beyond those
listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliabil
ity.

Storage Temperature ...........................-50°Cto125°C

Operating Temperature ..........................-20°Cto75°C

-

Electrical Characteristics

Symbol Parameter

V

V

V

I

I

I

t

t

t

t

R

R

f

Operating Voltage

DD

Input Low Voltage

IL

Input High Voltage

IH

Standby Current 1.5V

STB

Operating Current 1.5V No load

DD

Output Sink Current of INT 1.5V

OL

Data Setup Time 1.5V

A

Data Hold On Time 1.5V

B

Inter Digit Time 1.5V

C

Input Debounce Time(S1, S2, TIMER) 1.5V

DB

Pull-high Resistance (HK,DI,SK) 1.5V

HI

Pull-low Resistance (TIMER) 1.5V

LO

System Frequency 1.5V Crystal=32768Hz

OSC

Test Conditions

V

DD

Conditions

¾¾

¾¾

¾¾

=Floating (or V

V

V

HK

=0.3V

O

DD)

¾

¾

¾

¾¾

=0V

V

IN

=1.5V

V

TIMER

f

=32768Hz, Ta=25°C

OSC

Min. Typ. Max. Unit

1.2 1.5 1.7 V

V

SS

0.8V

DD

¾

¾

500 1000

1

2

5

¾

¾

¾

31.25

32768

0.2V

¾

¾

DD

V

DD

0.1 1

410

¾mA

¾¾ms

¾¾ms

¾¾ms

¾

1

5

¾ MW

¾ MW

¾

V

mA

mA

ms

Hz

Rev. 1.10 4 September 13, 2001

Functional Description

Operational flow chart

Power-on

R eset to 00 00

H T1616/H T1616C : D isplay real tim e,

H T1617: B LA N K

HT1616C

Y

R eset to 00 00

& start tim er

Keep counting

N

T rig . T IM E R k e y ?

N

H K = "0 " ?

Y

N

N

Y

HK=0 ?

N

N

HK=1

> 5 sec

?

Y

Y

N

Y

Tim er hold

T rig . T IM E R k e y ?

N

> 5 secs ?

Y

R eset to 00 00

& start tim er

Keep counting

Trig. TIM ER key ?

Y

Tim er hold

T rig . T IM E R k e y ?

N

H K = "0 " ?

N

"H K = 1 "

> 5 secs ?

Y

Y

Y

Y

Y

Trig.

TIM ER ke y?

N

H K = "0 " ?

Y

R eset to 00 00
& start tim er

Tim er keeps counting,

displays tim er value

D ialing data input ?

N

Trig. TIM ER key ?

N

H K = "0 " ?

N

Tim er stops, displays

total conversation tim e

O v e r 5 s e c s ?

Y

N

Y

D isplay dialing num ber

data in > 10 s ?

Trig. TIM ER key ?

Y

N

No

N

N

H K = "0 " ?

Y

Y

N

Rev. 1.10 5 September 13, 2001

On-hook & Off-hook

HT1616C

R eal Tim e

10 25 37

H our

M inute

B lock A B lock B

S2

11

S2

26

S2

O n-hook

S1

> 5 secs

S1

B lock C

O ff-hook

D isplay T im er
5-sec duration

< 5 secs and
O ff-hook

Receive Digit(s)

7 8

7 8 0

7

O n-hook

No Data
Entry >10 secs

Receive Data

Tim er M ode

00 00

00 01

00 02

Note: Block A shows the switches S1 and S2 that are used for setting and selecting.

Block B illustrates a timer mode when Off-hook; timer resets and starts to count the conversation time.
Block C displays blinking ²¾². After Off-hook, dialing data is received and displayed on the LCD from left to right.
When the entry interval is over 10 seconds, the timer resets and starts to count.

TIMER key function

The TIMER key is used to start/stop the timer (toggle). In real time mode, it can perform a stop- watch function.

10 11 00

LC D display
real tim e

Trig. TIM ER

Trig.
TIM ER

00 00

00 12

T im e r re se t
and count

01 24

Tim er hold

00 12

Trig. TIM ER Trig. TIM ER

N o a c tio n fo r
over 5 secs

Tim er hold

00 12 36

R eturn to real
tim e clock

(w ith in 5 secs) Tim er reset

00 00

01 24

and count

In the conversation timer mode, it can reset or hold the timer.

10 11 00 1234567

O ff-hook

LCD display
real tim e

(H K = 0 )

Trig.
TIM ER

00 00

00 12

Tim er reset
and count

00 00

01 24

T im e r re se t
and count

D ialing out

T rig . T IM E R

S h o w d ia lin g
num bers

01 24

Tim er hold

D ial finished

(after 10 secs)

O n-hook for

over 5 secs

00 00

01 24

T im e r re se t
and count

00 24 36

H T1616C
R eturn to real
tim e clock

Rev. 1.10 6 September 13, 2001

HT1616C

Data & Timing

·

For telephone application
The HT1616C is designed to display telephone num
bers derived from the HT93XXX series telephone di
aler ICs. When the MODE pad is connected to VSS,
the corresponding data is illustrated in the following
table (MODE=0).

Data Code

Key-In

Blank

1

2

3

4

5

6

7

8

b3

0

0

0

0

0

0

0

0

1

b2 b1

0

0

0

0

1

1

1

1

0

00

01

1

1

0

0

1

1

0

Display

b0

Blank

0

1

0

1

0

1

0

·

For instrument or mc application

The HT1616C is also capable of displaying BCD data

-

-

generated from instrument or a mC system. The corre
sponding data and timing is shown in the Data Latch Tim
ing diagram. Before the data is transmitted to the
HT1616C, the HK
ously kept low. The HT1616C is then ready to receive the
data. At the falling edge of the clock the data is shifted in
to the IC. After all the data is sent to the HT1616C, the SK
pin is set low to avoid switching to the timer mode.

When the MODE pad is connected to ²Low², the data
code and display patterns are shown in the following
table:

pin should be pulled-low or continu

-

-

-

Data Code

Display

b3

0

0

0

0

0

b2

0

0

0

0

1

b1

b0

00

01

1

0

1

1

0

0

Blank

9

0

*

#

F

P

1

1

1

1

1

1

11

0

0

0

1

1

0

1

1

1

0

0

1

0

0

1

1

1

0

1

1

0

0

0

1

1

1

1

1

1

1

11

0

1

1

1

0

0

0

1

1

0

1

1

1

0

1

1

0

0

0

1

1

0

0

1

0

0

1

1

1

0

1

1

Rev. 1.10 7 September 13, 2001

HT1616C

On the other hand, when MODE pad is connected to ²High² the data code and display patterns are shown in the follow
ing table:

(MODE=1) (MODE=1)

1

1

1

1

1

1

1

1

1

1

1

1

Data Code

b3

b2

0

0

0

0

0

0

0

0

1

1

1

1

0

0

0

0

1

1

1

1

0

0

0

1

b1

b0

00

01

1

0

1

1

0

0

0

1

1

0

1

1

0

0

0

1

1

0

0

1

Display

b4

0

0

0

0

0

0

0

0

0

0

0

0

Data Code

b3

b2

0

0

0

0

0

0

0

0

1

1

1

1

0

0

0

0

1

1

1

1

0

0

0

1

b1

b0

00

01

1

0

1

1

0

0

0

1

1

0

1

1

0

0

0

1

1

0

0

1

Display

b4

Blank

-

0

1

0

1

0

1

0

11

·

Data latch timing for 4-bit pattern (MODE=0)

t

B

t

A

b3 b0b1b2 b3 b0b1b2 b0b1

·

Data latch timing for 5-bit pattern (MODE=1)

t

B

t

A

b4 b1b2 b4 b0b1b0b3 b0b3 b1b2

1

0

1

D ig it 1

D ig it 1

0

0

1

1

1

0

1

1

t

C

D ig it 2

t

C

1

1

1

1

D ig it 2

1

1

1

11

0

1

0

1

1

1

1

0

1

0

1

CLK

DI

Digit N

CLK

DI

Digit N

Rev. 1.10 8 September 13, 2001

Application Circuits

For telephone interfacing (with batteries)

HT1616C

1 2 /1 6 -D ig it L C D

8050

CO M SEGCOM SEG CO M

131

1

70

69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51

270k

8050

330k

W

220k

100k

W

W

W

HK

S1

12/24

S2

DI

SK

47k

W

HFO

HKS

HFI VDD

HDI

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 18 19 20 21 22 23 24

TIM ER

32768H z

DO CLOCK

HT93XXX Dialer

HDI

1N 4148´3

HFI

47k

W

330mF

0.02mF
10V

H T 1616C

25 26 27 28 29 30 31 32

0.1mF
F

0.1

m

1.5V

100k

W

A92

2.7k

W

33k

W

A42

5.1V

10M

3.58M Hz

X1

PO

W

33 3435

X2

VSS

O ff- h o o k

47k

W

50

49

48

47

46

45

44

43

42

41

40

39

38

37

On-hook

VSS

30 2

36

Tip

1A bridge

Ring

* The IC substrate should be connected to VDD in the PCB layout artwork.

Rev. 1.10 9 September 13, 2001

For telephone interfacing (without batteries)

COM

SEG

COM

131

1

70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51

2

3

4

5

6

7

8

HK

9

10

11

12

13

14

DI

15

16

17 18 19 20 21 22 23 24

SK

12/16-D igit LC D

H T 1616C

25 26 27 28 29 30 31 32

TIM ER

33 3435

HT1616C

SEG C OM

30 2

50

49

48

47

46

45

44

43

42

41

40

39

38

37

36

8050

270k

W

8050

330k

220k

100k

32768H z

47k

W

W

HDI

W

DO CLO CK

HFO

HKS

HFI VDD

HT93XXX Dialer

HDI

1N 4148´6

20k

W

HFI

47k

1mF

0.02mF

W

330mF
10V

0.1mF

0.1mF

3.58M Hz

X1 X2

VSS

PO

100k

W

2.7k

W

W

33k

5.1V

W

A42

10M

A92

O ff-hook

W

47k

W

VSS

* The IC substrate should be connected to VDD in the PCB layout artwork.

On-hook

1A bridge

Tip

Ring

Rev. 1.10 10 September 13, 2001

For instrument or mC use

HT1616C

12/16-D igit LC D

CO M SEGCOM SEG C OM

131

1

70

69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51

HK

12/24

S1

S2

DI

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 18 19 20 21 22 23 24

SK

32768H z

H T1616C

TIM ER

0.1mF

0.1

25 26 27 28 29 30 31 32

F

m

50

49

48

47

46

45

44

43

42

41

40

39

38

37

33 3435

36

+

1.5V

30 2

R1

R1

R

R1

R

5V

HK

VDD

DO CLO CK

In s tru m e n t o r mC S yste m

R

VSS

* The IC substrate should be connected to VDD in the PCB layout artwork.

Note:

To drive SK
To drive SK

,DIand HK , an open drain NMOS output structure is recommended.
,DIand HK with a CMOS output structure, a voltage divider is needed (R=4.3kW, R1=10kW).

Rev. 1.10 11 September 13, 2001

LCD Configurations

For 12-digit application

·

Segment electrode side

13 14 15 39 40 41 4233 34 35 36 37 3829 30 31 32SEG 161718 192021 222324 252627 28 434445 464748

LCD driving system 1/2 bias, 1/3 duty, 3V

·

Common electrode side

HT1616C

COM 2

COM 1

·

LCD connection

COM1COM

SEG13SEG14SEG15SEG

3

For 16-digit application

·

Segment electrode side

789 2728293021 22 23 24 25 2615 161718 192010 11 12 13 14SEG 4 5 6123 31 32 33 34 35 36 3738 39 40 4142 4344 45 46 47 48

·

Common electrode side

COM 3

COM

SEG

16

SEG

47

2

48

LCD driving system 1/2 bias, 1/3 duty, 3V

COM 2

COM 1

·

LCD connection

COM

COM

SEG

33

11

SEG

2

SEG SEG SEG

SEG

456

SEG

4 5

SEG

4 6

SEG
4 7

COM 3

SEG

4 8

COM
2

Rev. 1.10 12 September 13, 2001

Holtek Semiconductor Inc. (Headquarters)

No.3, Creation Rd. II, Science Park, Hsinchu, Taiwan
Tel: [phone]
Fax: [phone]
http://www.holtek.com.tw

Holtek Semiconductor Inc. (Taipei Sales Office)

4F-2, No. 3-2, YuanQu St., Nankang Software Park, Taipei 115, Taiwan
Tel: [phone]
Fax: [phone]
Fax: [phone] (International sales hotline)

HT1616C

Holtek Semiconductor Inc. (Shanghai Sales Office)

7th Floor, Building 2, No.889, Yi Shan Rd., Shanghai, China 200233
Tel: [phone]
Fax: [phone]
http://www.holtek.com.cn

Holtek Semiconductor Inc. (Shenzhen Sales Office)

5/F, Unit A, Productivity Building, Cross of Science M 3rd Road and Gaoxin M 2nd Road, Science Park, Nanshan District,
Shenzhen, China 518057
Tel: [phone]
Fax: [phone]

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Suite 1721, Jinyu Tower, A129 West Xuan Wu Men Street, Xicheng District, Beijing, China 100031
Tel: [phone]
Fax: [phone]

Holtek Semiconductor Inc. (Chengdu Sales Office)

709, Building 3, Champagne Plaza, No.97 Dongda Street, Chengdu, Sichuan, China 610016
Tel: [phone]
Fax: [phone]

Holmate Semiconductor, Inc. (North America Sales Office)

46729 Fremont Blvd., Fremont, CA 94538
Tel: [phone]
Fax: [phone]
http://www.holmate.com

Copyright Ó 2001 by HOLTEK SEMICONDUCTOR INC.

The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek as
sumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used
solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable
without further modification, nor recommends the use of its products for application that may present a risk to human life
due to malfunction or otherwise. Holtek¢s products are not authorized for use as critical components in life support devices
or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information,
please visit our web site at http://www.holtek.com.tw.

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Rev. 1.10 13 September 13, 2001