HANTRONIX HT1616C Datasheet

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

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 -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

-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

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

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

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)

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

I

t

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

=Floating (or V

V

HK

=0.3V

O

DD)

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

500 1000

1

2

5

¾

31.25

32768

0.2V

¾

DD

V

DD

0.1 1

410

¾mA

¾¾ms

¾

1

5

¾ MW

¾

V

mA

ms

Hz

Rev. 1.10 4 September 13, 2001