Silan
Semiconductors
TONE/PULSE SWITCHABLE DIALER
WITH LCD INTERFACE AND
DUAL-TONE MELODY
DESCRIPTION
SC91415 SERIES
The SC91415 is a series of tone/pulse switchable dialers that is
composed of T/P dialer and T/P dialer with 13 set memories. The
SC91415 series provide necessary functions of telephone set for
application in any environment, such as Pulse dialing, Tone (DTMF)
dialing, Handfree dialing, keying tone and lock functions. The lock
function is designed to inhibit toll dialing operation. Beside this,
melody generator, ring detector and SDO (Serial Data Output)
functions are provided in advance version. Melody generator will
output dual-tone music in line hold duration. Ring detector can
prevent illegal dialing from pocket dialer. The SDO is designed to
drive LCD driver and voice synthesizer.
DIP-18
DIP-22
FEATURES
*Tone/Pulse switchable
*Wide operating voltage from 2.0 V to 5.5 V
*Low operating current, 0.15mA (Pulse) and 0.3mA (Tone) typically
*Adding resistor on keyboard scan pin that can select many tele-
phone specifications, such as: Pulse rate, M/B ratio, Flash time,
lock dialing functions.
*Lock function provides conventionality key lock and password lock
operations
*Ring detector is designed to prevent illegal dialing from pocket
dialer
*13 set one touch or (3 set one touch and 10 set two touch)
repertory memory, each one can hold data up to 16 digits
*A 32-digit LNB (last number) redial memory
*Handfree function provides on-hook dialing and speakerphone
application
*Pause and P-T time are fixed to 3.6 seconds
*Tone duration and inter-tone pause time are fixed to 98 ms
*Using 3.579545 MHz crystal or ceramic resonator
*SDO function supports LCD driver and
voice synthesizer to indicate dialing
numbers.
*Line hold function is designed for stopping
conversation temporality
*Melody generator provides music on hold
function
*Keytone function provides rapidly keying
recognition
ORDERING INFORMATION
SC91415AP
SC91415BP
SC91415CK
SC91415DK
DIP-18 Package
DIP-20 Package
DIP-22 Package
DIP-24 Package
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.0
2001-11-13
1
Silan
Semiconductors
DIALING SIGNAL OPTION
SC91415 SERIES
The SC91415 series incorporated a special keyboard scanning function that is connecting a resistor (typically is 560
kΩ) on keyboard scan pin to select many telephone specifications. The specifications are described as following :
a. Mode
ROW1
R-V
DD
NR
R-Vss
c. Flash Time
ROW3
NR
NR
R-Vss
R-Vss
e. Lock number
COL2
NR
NR
R-Vss
R-Vss
COL3
NR
R-Vss
NR
R-Vss
Lock number
None
0
9
0.9
ROW4
NR
R-Vss
NR
R-Vss
Tf (ms)
600
100
80
300
f. ROW5/SDO pin functions
COL5
NR
R-Vss
ROW5 or SDO Pin
SDO
ROW5
Mode
20PPS
Tone
10PPS
d. Lock control method
COL1
R-VDD
NR
R-Vss
Control method
Key lock
None lock
Password lock
b. M/B ratio
ROW2
NR
R-Vss
MBR (%)
40:60
33:66
(Note): If select SDO function, the memory type is
(1T*3+2T*10)
If select ROW function, the memory type is
(1T*3+2T*10) and (1T*13)
ABSOLUTE MAXIMUM RATINGS
(Tamb=25°C, All voltage referenced to V
SS
, unless otherwise specified)
Characteristic
Power Supply Voltage
Input Voltage
Power Dissipation
Operating Temperature
Storage Temperature
Symbol
V
DD
V
IN
P
D
Topr
Tstg
Value
6.0
V
SS
-0.3~V
DD
+0.3
500
0~+50
-55~+125
Unit
V
V
mW
°C
°C
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.0
2001-11-13
4
Silan
Semiconductors
ELECTRICAL CHARACTERISTICS
SC91415 SERIES
Test Conditions
Tone
Pulse
Pulse
Tone
Pulse
Tone
ON-HOOK
OFF-HOOK
ON-HOOK
unload
Unload
with pull up/down
resistor *8
Unload
with pull up/down
--
--
V
SS
0.8V
DD
0.2
--
--
--
0.1
0.001
1.0
0.1
0.2V
DD
V
DD
--
±0.001
µA
µA
V
mA
µA
(Tamb=25°C, V
DD
=2.5V, fosc=3.579545MHz, All voltage referenced to V
SS,
unless otherwise specified)
Parameter
Operating Voltage
Symbol
V
DD
Min
2.0
2.0
--
--
--
--
Typ
--
--
0.15
0.3
0.15
0.3
Max
5.5
5.5
0.3
0.5
0.3
0.5
Unit
V
Operating Current (
HKS
=0)
I
DD
mA
Standby Current
Istby
OFF-HOOK resistor *8
Memory Retention Current
HKS
,
HFI
& DRING pins:
Imrt
Vil
Vih
Ioh
Ioh
ON-HOO K V
DD
=1.0V
--
--
Vo=2.0V
Vo= V
DD
Input Voltage
HFO & HDO Pins Source Current
PO
,
XMUTE
,
RMUTE
& SDO
Pins Leakage Current
PO
,HFO,
XMUTE
,
RMUTE
&
SDO Pins Sink Current
Iol
Vo=0.5V
-0.2
--
--
2
2
0.2
0.2
--
--
--
--
--
--
--
100
200
10
10
--
--
20
600
30
3.6
3.6
600
100
80
--
--
--
50
50
--
--
--
--
--
--
--
--
mA
kΩ
kΩ
µA
mA
ms
Hz
ms
Sec.
Sec.
DRING
pin input resistance
HFI
Pin Input Resistance
Rdring Vdring = V
SS
Rhfi
Ioh
Iol
Ioh
Iol
Tdb
fkt
Tkt
Tp
Tpt
Vhfi = V
SS
Vksn=V
SS
Vksn=V
DD
Vo=2.0V
Vo=0.5V
--
--
--
--
--
Row3B, Row4B=NR,NR
Row3B, Row4B=NR,R-Vss
Row3B, Row4B=R-Vss,NR
Row3B, Row4B=R-Vss,R-Vss
Keyboard Scanning Pins
Output Current(except COL4/KT)
COL4/KT Source Current
Sink Current
Keyboard debounce time
Key Tone Signal
Pause Time
Pulse to Tone Waiting Time
Frequency
Duration
Flash Time
Tf
ms
--
(to be continued)
--
300
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.0
2001-11-13
5
Talking
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