HT1613C中文资料
HT1613C
Timer with Dialer Interface
Block Diagram
Rev.1.101August 17,2001
Features
·Operating voltage:1.2V~1.7V ·Low operating current:3m A (typ.)
·Dialing number and conversation time display ·Conversation timer (59mins and 59secs max.)·8or 10-digit LCD display driver;3V,1/2bias,1/3duty (8
digit hand-held calculator LCD used for 8-digit applica-tion)
·Real time clock with stopwatch ·Built-in dialer interface ·12-hour or 24-hour format
·Uses 32768Hz crystal
·Two-button sequential operation for real time clock
setting
·Pad options
-Real time (RT)
-Auto change to timer mode (ACT)-Extension phone number display (EPN)
·Blinking cursor waits for dialing number ·Last call time display
General Description
The HT1613C is a CMOS chip designed for dialer inter-faces driving 8or 10digit LCDs.Various functions,such as real time clock,dialing number and conversation time display are provided.
The HT1613C can display the real time or be blank by default.When answering a telephone call,the timer is activated to tell users how long the conversation has
taken.The HT1613C receives dialing data from the di-aler and displays the phone number on the LCD from left to right each time a phone call is made.By adding a TIMER key,the HT1613C can provide the stopwatch and timer reset/hold functions.Refer to the functional description for details.
Applications
·Timers,clocks and watches ·LCD display drivers
·Telephone display interface ·Instrument display
Patent Number:84545(R.O.C.)
Patent Pending:08/214,079
(U.S.A.)
D D
Pad Assignment
Chip size:128′141(mil)2
*The IC substrate should be connected to VDD in the PCB layout artwork.
Pad Coordinates Unit:mil Pad No.X Y Pad No.X Y Pad No.X Y
1-57.9145.5219-10.25-61.963758.1028.84 2-57.9138.5920 2.76-61.963858.1036.19 3-57.9131.672111.94-62.503958.1043.53 4-57.9124.792232.97-62.504058.1050.87 5-57.3716.982339.86-62.504158.1058.22 6-57.37 2.912446.74-62.504237.2663.04 7-57.91-8.602558.10-62.464329.9163.04 8-57.91-15.532658.10-55.044422.5763.04 9-57.91-22.492758.10-48.164515.2363.04 10-57.91-29.382858.10-36.30467.8863.04 11-57.91-36.262958.10-28.95470.5463.04 12-57.91-45.823058.10-21.6148-6.8163.04 13-57.91-54.203158.10-15.2249-14.1563.04 14-57.91-62.503258.10-7.8850-21.5063.04 15-47.20-62.503358.10-0.5451-28.8463.04 16-33.43-62.503458.10 6.8152-36.1863.04 17-22.80-62.463558.1014.1553-43.5363.04 18-16.37-62.503658.1021.5054-50.8763.04
Rev.1.102August17,2001
Pad Description
Pad Name I/O Internal
Connection Description SEG1~SEG30O CMOS OUT LCD segment signal output pads
COM1~COM3O CMOS OUT LCD common signal output pads
HK I CMOS IN
Pull-high
Hook switch detector input
Active low
X1I
OSCILLATOR 32768Hz crystal oscillator input
X2O32768Hz crystal oscillator output
T1I CMOS IN
Pull-high
Test pad(connected to VSS for production test)
T2I CMOS IN
Pull-high
Test pad(connected to VSS for production test)
INT O NMOS OUT Interrupt output,8Hz or16Hz by mask option
TIMER I CMOS IN
Pull-low
Timer reset and start/hold toggle control input pad
12/24I CMOS IN
Pull-low
12-hour or24-hour format option pad,connected to VDD for12-hour format
S1I CMOS IN
Pull-low
Clock setting switch
Active high
S2I CMOS IN
Pull-low
Clock adjusting switch
Active high
DI I CMOS IN
Pull-high
Serial data input pad(connected to the dialer)
Data should be valid at the falling edge of SK
SK I CMOS IN
Pull-high
Clock input pad(connected to the dialer)
RES I CMOS IN
Pull-high
System initialization pin(active low)
The pull-high resistance is200k W typ.
RT I
CMOS
LATCH IN
Pull-low
Real time selection pin
VDD:With real time mode
Floating:Without real time mode
EPN I
CMOS
LATCH IN
Pull-high
Extension phone number display selection pin
VSS:Without extension phone number display
Floating:With extension phone number display
ACT I
CMOS
LATCH IN
Pull-high
In the dialing number display mode,auto change to timer mode selection
VSS:Auto change to timer mode
Floating:Manual change to timer mode
VA O CMOS OUT Voltage doubler,connected to external capacitor
VB O CMOS OUT Voltage doubler,connected to external capacitor
VC O CMOS OUT Voltage doubler,connected to external capacitor
VDD??Positive power supply
VSS??Negative power supply,ground
Rev.1.103August17,2001
Approximate internal connection circuits
Absolute Maximum Ratings
Supply Voltage............................................-0.3V to5V Storage Temperature............................-50°C to125°C Input Voltage..............................V SS-0.3V to V DD+0.3V Operating Temperature...........................-20°C to75°C
Note:These are stress ratings only.Stresses exceeding the range specified under2Absolute Maximum Ratings2may 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.
Electrical Characteristics f OSC=32768Hz,Ta=25°C
Symbol Parameter
Test Conditions
Min.Typ.Max.Unit V DD Conditions
V DD Operating Voltage?? 1.2 1.5 1.7V V IL Input Low Voltage 1.2V~1.7V?V SS?0.2V DD V V IH Input High Voltage 1.2V~1.7V?0.8V DD?V DD V
I STB Standby Current 1.5V V HK=Floating(or V DD)?0.11m A
I DD Operating Current 1.5V No load?310m A
I OL Output Sink Current of INT 1.5V V O=0.3V5001000?m A
t A Data Setup Time 1.5V?1??m s t B Data Hold on Time 1.5V?2??m s t C Inter Digit Time 1.5V?5??m s
t DB Debounce Time
(HK,S1,S2,TIMER)
1.5V??31.25?ms
R HI1Pull-high Resistance
(HK,DI,SK)
1.5V V IN=0V?1?M W
R HI2Pull-high Resistance(RES) 1.5V V IN=0V100200400k W
R LO Pull-low Resistance
(TIMER,S1,S2,12/24)
1.5V V IN=1.5V?5?M W
f OSC System Frequency 1.5V Crystal=32768Hz?32768?Hz Rev.1.104August17,2001
Functional Description
Operational flow chart
Rev.1.105August17,2001
On-hook&Off-hook
Note:Block A shows the switches S1and S2that are used for setting and selecting when RT=VDD(Real time mode).S1and S2are disabled when RT=floating(Blank mode).
Block B illustrates a timer mode when TIMER input floating or when there￠s no data entry>10secs (ACT=VSS).Once in the timer mode,the timer resets and starts to count the conversation time(ACT=float-ing).
Block C displays blinking2?2,after Off-hook,dialing data is received and displayed on the LCD from left to right.
Rev.1.106August17,2001
·Data latch timing
Rev.1.107August 17,2001
Data &Timing
·For telephone application
The HT1613C is designed to display telephone num-bers derived from the HT93XXX series telephone dial-ers.The corresponding data is illustrated in the following table.
·For instrument or m C application
The HT1613C is also capable of displaying BCD data generated from instrument or a m C system.The corre-sponding data and timing is shown in the Data latch timing diagram.Before the data is transmitted to the HT1613C,the HK pin should be pulled-low or continu-ously kept low.The HT1613C 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 HT1613C,the SK pin is set low to avoid switching to the timer mode.
Application Circuits
For telephone interfacing(with batteries)
*The IC substrate should be connected to VDD in the PCB layout artwork.
Rev.1.108August17,2001
For telephone interfacing(without batteries)
*The IC substrate should be connected to VDD in the PCB layout artwork.
Rev.1.109August17,2001
For instrument or m C use
*The IC substrate should be connected to VDD in the PCB layout artwork.
Note:To drive SK,DI,and HK pin,an open drain NMOS output structure is recommended.
To drive and pin with a CMOS output structure,a voltage divider is needed(R=4.3k W,R1=10k W). Rev.1.1010August17,2001
LCD Configurations
For 8-digit application
·Segment electrode side
LCD driving system 1/2bias,1/3duty,3V
·Common electrode side
·LCD connection
Rev.1.1011August 17,
2001
For10-digit application
·Segment electrode side
LCD driving system1/2bias,1/3duty,3V
·
·LCD connection
Rev.1.1012August17,2001
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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 https://www.wendangku.net/doc/ac8423873.html,.
Rev.1.1013August17,2001