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HT1616C Timer with Dialer Interface
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
Patent Number: 84545 (R.O.C.) Patent Pending: 08/214, 079 (U.S.A.)
* Stop watch * Built-in dialer interface * 12-hour or 24-hour format * Two-button sequential operation for real
time clock setting
duty
* Uses 32768Hz crystal
* Real time clock
Applications
* Timers, clocks and watches * LCD display drivers * Telephone display interface * Instrument display
General Description
The HT1616C is a CMOS chip designed for dialer interfaces driving 12 or 16-digit LCDs. Various functions, such as real time clock, dialing number and conversation 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 shown for about 5 seconds and the real time is displayed 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
X1 X2 T1 T2 T im e r DI SK S2 S h ift R e g is te r D ecoder & MUX SEG1 Segm ent L a tc h & S e le c t S can CKT SEG 48 V o lta g e D o u b le r T im e B ase Com m on C ir c u it IN T COM1 COM2 COM3 VA VB VC
S ta te C o n tro l
T IM E R 1 2 /2 4 S1 HK
C o n tro l C ir c u it
RES
Rev. 1.10
1
September 13, 2001
HT1616C
Pad Assignment
SEG 10 SEG 11 SEG 12 SEG 13 SEG 14 SEG 15 SEG 16 SEG 17 SEG 18 SEG 19 SEG 20 SEG 21 SEG 22 SEG 23 SEG 24 SEG 25 SEG 26 SEG7 70 1 2 3 4 5 6 7 8 (0 ,0 ) 9 10 11 12 13 14 15 16 17
T1
SEG8 69
SEG9 68
SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 COM3 COM1
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50 49 48 47 46 45 44 43 42 41 40 39 38 37
SEG 27 SEG 28 SEG 29 SEG 30 SEG 31 SEG 32 SEG 33 SEG 34 SEG 35 SEG 36 SEG 37 SEG 38 SEG 39 SEG 40
HK S1 C LR MODE 1 2 /2 4 S2 DI C LK
18
T2
19
X1
20
X2
21
RESET
22
IN T
23
VSS
24
VA
25
VB VC
26
VDD
27
COM2
28
SEG 48
29
30
31
SEG 46
32
SEG 45
33
SEG 44
34
SEG 43
35
SEG 42
36
SEG 41
Chip size: 140.1 137.2 (mil)2 * The IC substrate should be connected to VDD in the PCB layout artwork.
SEG 47
Pad Coordinates
Pad No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 X -64.47 -64.47 -64.47 -64.47 -64.47 -64.47 -64.47 -64.47 -64.47 -64.47 -64.47 -64.47 -64.47 -64.47 -64.47 -64.47 -58.69 -52.65 -46.53 -40.41 -33.79 -27.41 -18.80 -12.60 Y 61.01 50.26 44.29 38.33 32.36 26.01 19.55 13.50 -2.03 -8.72 -15.99 -22.68 -29.99 -37.67 -43.99 -50.37 -61.01 -61.01 -61.01 -61.01 -61.01 -61.01 -61.01 -61.01 Pad No. 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 X -4.11 4.03 10.00 16.01 22.59 28.63 34.63 40.60 46.57 52.54 58.50 64.47 64.47 64.47 64.47 64.47 64.47 64.47 64.47 64.47 64.47 64.47 64.47 64.47 Y -61.01 -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 3.79 10.29 16.41 22.91 29.03 Pad No. 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 X 64.47 64.47 61.60 55.48 48.98 42.86 36.36 30.25 23.73 17.61 11.11 4.99 -1.51 -7.63 -14.13 -20.25 -26.75 -32.88 -39.38 -45.50 -52.00 -58.12
Unit: mil Y 35.53 41.65 61.01 61.01 61.01 61.01 61.01 61.01 61.01 61.01 61.01 61.01 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
HT1616C
Pad Description
Pad Name SEG1~SEG48 COM1~COM3 HK S1 RES MODE I/O O O I I I I Internal Connection CMOS OUT CMOS OUT 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 NMOS OUT CMOS OUT CMOS OUT CMOS OUT 3/4 3/4 Description LCD segment signal output pads LCD common signal output pads 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 minute digits can be adjusted depending upon the S1 selection Serial data input pad Data should be valid at the falling edge 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 32768Hz crystal oscillator output Timer reset-and-start/hold toggle control input pad Interrupt output, 16Hz (default) or 2Hz (by mask option) Voltage doubler, connected to the external capacitor Voltage doubler, connected to the external capacitor Voltage doubler, connected to the external capacitor Positive power supply Negative power supply, ground
12/24 S2 DI SK T1 T2 X1 X2 TIMER INT VA VB VC VDD VSS
I I I I I I I O I O O O O 3/4 3/4
Approximate internal connection circuits
C M O S IN P u ll- lo w C M O S IN P u ll- h ig h
V
DD
NMOS OUT
CMOS OUT
V
DD
O S C IL L A T O R
X1 10M W X2
12pF
15pF
Rev. 1.10
3
September 13, 2001
HT1616C
Absolute Maximum Ratings
Supply Voltage ...........................................-0.3V to 5V Input Voltage ............................ VSS-0.3V to VDD+0.3V Storage Temperature ...........................-50C to 125C Operating Temperature ..........................-20C to 75C
Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings 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 reliability.
Electrical Characteristics
Symbol VDD VIL VIH ISTB IDD IOL tA tB tC tDB RHI RLO fOSC Parameter Operating Voltage Input Low Voltage Input High Voltage Standby Current Operating Current Output Sink Current of INT Data Setup Time Data Hold On Time Inter Digit Time Test Conditions VDD 3/4 3/4 3/4 Conditions 3/4 3/4 3/4 Min. 1.2 VSS 0.8VDD 3/4 3/4 500 3/4 3/4 3/4 3/4 1 2 5 3/4 3/4 3/4 3/4
fOSC=32768Hz, Ta=25C Typ. 1.5 3/4 3/4 0.1 4 1000 3/4 3/4 3/4 31.25 1 5 32768 Max. 1.7 0.2VDD VDD 1 10 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 Unit V V mA mA mA ms ms ms ms MW MW Hz
1.5V VHK=Floating (or VDD) 1.5V No load 1.5V VO=0.3V 1.5V 1.5V 1.5V
Input Debounce Time (S1, S2, TIMER) 1.5V Pull-high Resistance (HK, DI, SK) Pull-low Resistance (TIMER) System Frequency 1.5V VIN=0V
1.5V VTIMER=1.5V 1.5V Crystal=32768Hz
Rev. 1.10
4
September 13, 2001
HT1616C
Functional Description
Operational flow chart
P o w e r-o n R e s e t to 0 0 00
H T 1 6 1 6 /H T 1 6 1 6 C : D is p la y r e a l tim e , H T1617:BLAN K
Y R e s e t to 0 0 00 & s ta r t tim e r
T r ig . T IM E R k e y ? N H K = "0 " ? N
K e e p c o u n tin g Y
N
T r ig . T IM E R k e y ? Y R e s e t to 0 0 00 & s ta r t tim e r
N
H K = "0 " ? Y
T im e r h o ld T im e r k e e p s c o u n tin g , d is p la y s tim e r v a lu e Y
T r ig . T IM E R k e y ? N N > 5 secs ? Y R e s e t to 0 0 00 & s ta r t tim e r
D ia lin g d a ta in p u t ? N Y T r ig . T IM E R k e y ? N
Y
D is p la y d ia lin g n u m b e r
No d a ta in > 1 0 s ? Y N T r ig . T IM E R k e y ? N
K e e p c o u n tin g Y
Y
H K = "0 " ? N T im e r s to p s , d is p la y s to ta l c o n v e r s a tio n tim e Y
N
T r ig . T IM E R Y
key ?
H K = "0 " ?
N
T im e r h o ld Y HK=0 ? T r ig . T IM E R k e y ? N N Y H K = "0 " ? N Y N "H K = 1 " > 5 secs ? Y N HK=1 > 5 sec ? Y Y O ver5 secs ? N
Rev. 1.10
5
September 13, 2001
HT1616C
On-hook & Off-hook
R e a l T im e 10 Hour 11 M in u te 26 S2 B lo c k A N o D a ta E n try > 1 0 s e c s 7 O n -h o o k R e c e iv e D a ta B lo c k B S2 S1 25 37 S2 S1 > 5 secs D is p la y T im e r 5 - s e c d u r a tio n O n -h o o k O ff-h o o k T im e r M o d e
00
00
00
01
< 5 secs and O ff-h o o k
00
02
R e c e iv e D ig it( s )
78
780
B lo c k
C
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 3/4. 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 T r ig . T IM E R L C D d is p la y r e a l tim e 00 00 00 12 T r ig . T IM E R T im e r h o ld 00 12 T r ig . T IM E R ( w ith in 5 s e c s ) 00 01 00 24
T im e r r e s e t and count
T im e r r e s e t and count
T r ig . T IM E R
01
24
N o a c tio n fo r over5 secs
00
12
36
T im e r h o ld
R e tu rn to re a l tim e c lo c k
In the conversation timer mode, it can reset or hold the timer.
10 11 00 O ff-h o o k L C D d is p la y r e a l tim e (H K = 0 ) 00 00 00 12 D ia lin g o u t S h o w d ia lin g n u m b e rs 1234567 D ia l fin is h e d (a fte r 1 0 s e c s ) 00 01 00 24
T im e r r e s e t and count
T im e r r e s e t and count
T r ig . T IM E R
00
00 T r ig . T IM E R
01
24 O n -h o o k fo r over5 secs
00
24
36
01 24 T im e r r e s e t and count
T im e r h o ld
H T1616C R e tu rn to re a l tim e c lo c k
Rev. 1.10
6
September 13, 2001
HT1616C
Data & Timing
* For telephone application * For instrument or mc application
The HT1616C is designed to display telephone numbers derived from the HT93XXX series telephone dialer ICs. When the MODE pad is connected to VSS, the corresponding data is illustrated in the following table (MODE=0).
D a ta C o d e K e y -In B la n k 1 2 3 4 5 6 7 8 1 9 0 1 0 1 1 1 # F P 1 1 1 1 1 1 1 0 1 0 1 1 1 0 0 0 1 1 0 1 0 0 1 0 0 1 0 0 0 1 1 1 0 1 1 0 0 1 0 1 0 0 0 0 0 0 1 0 0 1 1 b3 0 0 0 0 b2 b1 0 1 b0 0
D is p la y B la n k
The HT1616C is also capable of displaying BCD data generated from instrument or a mC system. The corresponding data and timing is shown in the Data Latch Timing diagram. Before the data is transmitted to the HT1616C, the HK pin should be pulled-low or continuously 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 Low, the data code and display patterns are shown in the following table:
D a ta C o d e b3 0 0 0 0 0 0 0 0 1 1 0 1 0 1 1 1 1 1 1 1 1 1 0 1 0 1 1 1 1 0 0 0 1 1 0 0 0 1 1 0 0 1 1 1 1 1 0 1 0 1 0 0 0 0 1 0 1 1 b2 0 0 0 b1 0 1 b0 0
D is p la y B la n k
*
Rev. 1.10
7
September 13, 2001
HT1616C
On the other hand, when MODE pad is connected to High the data code and display patterns are shown in the following table: (MODE=1) (MODE=1)
D a ta C o d e b4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 1 1 1 1 0 1 0 1 1 1 1 0 0 0 0 1 0 1 0 0 0 1 1 0 0 1 1 1 1 1 0 1 0 1 0 0 0 0 1 0 1 1 b3 b2 0 0 0 b1 0 1 b0 0
D is p la y B la n k
D a ta C o d e b4 1 1 1 0 0 0 0 0 1 1 0 1 0 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 0 1 1 1 1 1 1 0 0 1 0 0 1 0 1 0 0 1 0 1 0 0 1 1 1 1 0 1 0 1 0 0 1 1 0 0 1 1 b3 0 0 0 0 b2 b1 0 1 b0 0
D is p la y
* Data latch timing for 4-bit pattern (MODE=0)
tB C LK tA b3 b2 b1 b0 tC D ig it 1 D ig it 2 D ig it N b3 b2 b1 b0 b1 b0 DI
* Data latch timing for 5-bit pattern (MODE=1)
tB C LK tA b4 b3 b2 b1 b0 tC D ig it 1 D ig it 2 D ig it N b4 b3 b2 b1 b0 b1 b0 DI
Rev. 1.10
8
September 13, 2001
HT1616C
Application Circuits
For telephone interfacing (with batteries)
1 2 /1 6 -D ig it L C D
COM 1
COM SEG 3 1
SEG 30
COM 2
1 2 3 4 5 6 7 8
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52 50 49 48 47 46 45 44 43 42 41 40 39 38 37
51
HK S1
9
HT1616C
10 11 12 13 14 15
1 2 /2 4 S2 DI
16 17 18
19
20
21
22
23
24
25 26
27 28
29 30
31
32 33
34
35
36
T IM E R
SK 32768H z
47kW
0 .1 m F 0 .1 m F 1 .5 V
3 .5 8 M H z
8050 330kW
HFO HKS HFI HDI
DO
CLO CK
X1
X2 VSS
H T 9 3 X X X D ia le r
HDI
1N 41483 VDD 100kW 10M W A92
PO
O ff-h o o k O n -h o o k 1 A b r id g e
T ip
270kW 2 .7 k W 33kW
R in g
220kW 8050 100kW
HFI
47kW 330mF 10V
47kW A42
0 .0 2 m F
5 .1 V VSS
* The IC substrate should be connected to VDD in the PCB layout artwork.
Rev. 1.10
9
September 13, 2001
HT1616C
For telephone interfacing (without batteries)
1 2 /1 6 -D ig it L C D
COM 1
COM SEG 3 1
SEG 30
COM 2
1 2 3 4 5 6 7 8
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52 50 49 48 47 46 45 44 43 42 41 40 39 38 37
51
HK
9
HT1616C
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
DI
34 35
36
T IM E R
SK 32768H z
0 .1 m F 0 .1 m F 3 .5 8 M H z
8050 330kW
47kW
HFO
DO
CLO CK
X1
X2 VSS
HKS
HFI HDI HDI
H T 9 3 X X X D ia le r
VDD 100kW 10M W A92
PO
O ff-h o o k O n -h o o k 1 A b r id g e
T ip
1N 41486
270kW 8050
220kW
20kW H F I 47kW 1mF 0 .0 2 m F 330mF 10V
2 .7 k W 33kW 5 .1 V
R in g
47kW A42 VSS
100kW
* The IC substrate should be connected to VDD in the PCB layout artwork.
Rev. 1.10
10
September 13, 2001
HT1616C
For instrument or mC use
1 2 /1 6 -D ig it L C D
COM 1
COM SEG 3 1
SEG 30
COM 2
1 2 3 4 5 6 7 8
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52 50 49 48 47 46 45 44 43 42 41 40 39 38 37
51
HK S1
9
HT1616C
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
1 2 /2 4 S2 DI
35
36
T IM E R
SK 32768H z
R1
0 .1 m F 0 .1 m F + 1 .5 V
R
R1
R
R1 DO
R
5V
HK
VDD
CLO CK
In s tru m e n t o r m C
S y s te m
VSS
* The IC substrate should be connected to VDD in the PCB layout artwork. Note: To drive SK, DI and HK , an open drain NMOS output structure is recommended. To drive SK, DI and HK with a CMOS output structure, a voltage divider is needed (R=4.3kW, R1=10kW).
Rev. 1.10
11
September 13, 2001
HT1616C
LCD Configurations
For 12-digit application
* Segment electrode side
SEG
13 14 15
16 1718
19 2021
22 23 24
25 26 27
28 29 30
31 32 33
34 35 36
37 38 39
40 41 42
43 44 45
46 4748
LCD driving system 1/2 bias, 1/3 duty, 3V
* Common electrode side
COM2
COM1
COM3
* LCD connection
COM COM SEG SEG SEG 1 3 13 14 15
SEG 16
SEG SEG COM 47 48 2
For 16-digit application
* Segment electrode side
SEG
1
2
3
4
5
6
7
8
9
10 1112
131415
16 1718
192021 22 23 24
252627 28 2930
31 3233
34 3536
3738 39
404142
434445
46 4748
LCD driving system 1/2 bias, 1/3 duty, 3V
* Common electrode side
COM2
COM1
COM3
* LCD connection
COM COM 3 1
SEG 1
SEG SEG 3 2
SEG 4
SEG 5
SEG 6
SEG 45
SEG SEG 47 46
SEG 48
COM 2
Rev. 1.10
12
September 13, 2001
HT1616C
Holtek Semiconductor Inc. (Headquarters) No.3, Creation Rd. II, Science-based Industrial Park, Hsinchu, Taiwan Tel: 886-3-563-1999 Fax: 886-3-563-1189 http://www.holtek.com.tw Holtek Semiconductor Inc. (Sales Office) 11F, No.576, Sec.7 Chung Hsiao E. Rd., Taipei, Taiwan Tel: 886-2-2782-9635 Fax: 886-2-2782-9636 Fax: 886-2-2782-7128 (International sales hotline) Holtek Semiconductor (Shanghai) Inc. 7th Floor, Building 2, No.889, Yi Shan Rd., Shanghai, China Tel: 021-6485-5560 Fax: 021-6485-0313 http://www.holtek.com.cn Holtek Semiconductor (Hong Kong) Ltd. Block A, 3/F, Tin On Industrial Building, 777-779 Cheung Sha Wan Rd., Kowloon, Hong Kong Tel: 852-2-745-8288 Fax: 852-2-742-8657 Holmate Semiconductor, Inc. 46712 Fremont Blvd., Fremont, CA 94538 Tel: 510-252-9880 Fax: 510-252-9885 http://www.holmate.com Copyright O 2001 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes 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. Holteks 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.
Rev. 1.10
13
September 13, 2001

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