Silan
Semiconductors
13 MEMORY TONE / PULSE DIALER
WITH REDIAL SAVE HANDFREE &
HOLD FUNCTION
DESCRIPTION
SC91650/1/2 A/B
The SC91650A/B, SC91651A/B, SC91652A/B are 13-memory
Tone/Pulse switchable dialer with Last Number Redial(LNB) and
HOLD function, which are fabricated in COMS technology with wide
operating voltage for both tone and pulse mode, and consumes very
low memory retention current in ON-HOOK state.
DIP-18
FEATURES
*13-memory Tone/Puls e switchable dialer
*Three 16-digit one touch memory and ten 16-digit two touch
memory
One 32-digit last number redial memory
One 32-digit SAVE function for storing phone number in off hook
status
Note: only 15-digit/31-digit for Tone mode, 1-digit use to identify
tone mode
*Pulse-to-tone (P→T) is provided for PBX operation
*Flash key is available
*Minimum tone duration is 100ms for SC91650, SC91651 or 91ms
for SC91652
*Minimum intertone pause is 106ms for SC91650, SC91651 or
91ms for SC91652
*Uses 3.579545MHz crystal or ceramic resonator
*Many options can be selected
Mode (10PPS; 20PPS; Tone)
M/B ratio (40:60;33:66)
Pause time (3.6s;2.0s)
Pulse number (n;n+1;10-n)
Flash function (RESET;digit)
(P→T) pause time (3.6s;1.0s)
Flash time (80ms; 93ms; 100ms; 200ms; 300ms; 600ms)
Flash pause time (200ms; 1000ms)
* Redial pause time (1ms)
* Mixed dialing and cascade dialing is provided
* Handfree function is provided for speaker phone application
*Power on reset circuit is provided
*Hold function is provided
* Keytone is provided
*Packaged in 18-DIP or 22-DIP
DIP-22
ORDERING INFORMATION
SC91650A
SC91650B
SC91651A
SC91651B
SC91652A
SC91652B
DIP-18 Package
DIP-22 Package
DIP-18 Package
DIP-22 Package
DIP-18 Package
DIP-22 Package
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
REV: 1.0
2001.01.15
1
Silan
Semiconductors
KEYBOARD ASSIGNMENT
C1
C2
2
5
8
0
SC91650/1/2 A/B
C3
3
6
9
#
C4
SAVE
F
A
RD/P
C5
EM1
EM2
EM3
ST
R1
R2
R3
R4
2) SAVE: SAVE key.
3) F: Flash key
4) RD/P: Redial key/Pause key
5) ST: Store key
6) EMn: One touch memory key
7) A: Auto key for two touch memory
1
4
7
*/T
1) */T: In pulse mode, execute P→T function; In TONE mode, execute * key
DIALING SIGNAL OPTION
The resistor connection between selected Row (or Column) and Vss may select most country telecom
specifications (refer to Row and Column pin description). Those options include M/B ratio, Flash time, pause time
……
, as follows.
a): Make/Break ratio:
Row1
d): Flash time:
Row3
Row4
M/B ratio (%)
40:60
33:66
Flash time (ms)
600
300
93
200
*100
*80
NR
R
NR
NR
R
NR
R
NR
R
b): Pause time & P→T wait time:
Row2
R
*for SC91652 only
t
p
(sec)
3.6
2.0
t
pT
(sec)
3.6
1.0
NR
R
e): Dialing out Pulse number:
Column3
Column4
Pulse number
n
n+1
10-n
reserved
c): Flash Key function:
Column1
NR
t
FP
(sec)
0.2/0*
1.0
NR
R
R
NR
R
NR
R
Flash key
Reset
Digit
NR
R
* for flash time = 80ms, 200ms only
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
REV: 1.0
2001.01.15
4
Silan
Semiconductors
Note: 1). NR = No resistor connection to Vss.
2). R = A resistor connection to Vss (820k typically).
3). N = Pressed digit key.
SC91650/1/2 A/B
4). The following list is the corresponding pulse (break) numbers that are sent out by pressed the number
keys.
Digit key
1
2
3
4
5
6
7
8
9
0
*
#
Normal (n)
1
2
3
4
5
6
7
8
9
10
P→T KEY
ignored
New Zealand (10-n)
9
8
7
6
5
4
3
2
1
10
P→T KEY
ignored
Dialing signal option
Sweden/Denmark (n+1)
2
3
4
5
6
7
8
9
10
1
P→T KEY
ignored
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
-0.3~V
DD
+0.3
500
-25~+70
-55~+150
Unit
V
V
mW
°C
°C
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
REV: 1.0
2001.01.15
5
51mcu
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