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PDF HT1613C Data sheet ( Hoja de datos )
| Número de pieza | HT1613C | |
| Descripción | Timer | |
| Fabricantes | Holtek Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de HT1613C (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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www.DataSheet4U.com
HT1613C
Timer with Dialer Interface
Features
Patent Number: 84545 (R.O.C.)
Patent Pending: 08/214, 079 (U.S.A.)
· Operating voltage: 1.2V~1.7V
· Low operating current: 3mA (typ.)
· Dialing number and conversation time display
· Conversation timer (59 mins and 59 secs max.)
· 8 or 10-digit LCD display driver; 3V, 1/2 bias, 1/3 duty (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
Applications
· Timers, clocks and watches
· LCD display drivers
· Telephone display interface
· Instrument display
General Description
The HT1613C is a CMOS chip designed for dialer inter-
faces driving 8 or 10 digit 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.
Block Diagram
X1
X2
T1
T2
DI
SK
S2
RES
T IM E R
1 2 /2 4
S1
HK
ACT
T im e
B ase
T im e r
S h ift
R e g is te r
S ta te
C o n tro l
C om m on
C ir c u it
D ecoder
&
M UX
C o n tro l
C ir c u it
S can
CKT
RT EPN
V o lta g e
D o u b le r
IN T
COM 1
COM 2
COM 3
VA
VB
VC
S egm ent
L a tc h
&
S e le c t
SEG 1
S E G 30
Rev. 1.10
1 August 17, 2001
1 page  
www.DataSheet4U.cFoumnctional Description
Operational flow chart
N
Blank
Power-on
RT="1" ?
Y
Real time clock
HT1613C
TIMER input?
N
Y
Display last timer value
HK="0" ?
N
Over 9 secs?
Y
Y
N
N TIMER input?
Y
Y
EPN="0" ?
N
Display no.
HK="0" ?
Y
Y
TIMER input?
N
Over 10 secs?
Y
N
N
N HK="0" ?
Y
Blinking" "
N
N
N Dialing?
Y
Display no.
HK="0" ?
Y
ACT="0" ?
Y
Dialing?
Y
Display no.
N
N
HK="0" ?
Y
N TIMER input?
Y
HK="0" ?
N
Y
Y TIMER input?
N
Over 10 secs?
N
Y
Reset timer &
start counting
Display last
timer value
Keep counting
HK="0" ?
N
Y
Y
Dialing?
N
N
TIMER input?
Y
Hold timer
HK="0" ?
Y
Dialing?
N
Y
N
N TIMER input?
Y
Over 9 secs?
Y
N
EPN="0" ?
N
Display no.
Y
HK="0" ?
Y
TIMER input?
N
Y
N
N
Over 10 secs?
Y
Rev. 1.10
5 August 17, 2001
5 Page 
www.DataSheet4U.cLoCmD Configurations
For 8-digit application
· Segment electrode side
HT1613C
COM COM SEG SEG SEG SEG SEG SEG SEG SEG SEG SEG SEG SEG SEG SEG SEG SEG SEG SEG SEG SEG SEG SEG SEG SEG COM
1 3 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 2
LCD driving system 1/2 bias, 1/3 duty, 3V
· Common electrode side
COM2
COM1
· LCD connection
COM3
SEG 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Rev. 1.10
11 August 17, 2001
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet HT1613C.PDF ] | |
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