W91550 WINBOND [Winbond], W91550 Datasheet - Page 4

• Manufacturer Part Number: W91550
• Description: 13-MEMORY TONE/PULSE DIALER WITH LCD AND LOCK FUNCTION
• Manufacturer: WINBOND [Winbond]

Pin Description, continued
SYMBOL
V
DTMF
DD
S/ M
ATS
B/M
,
V
SS
38, 34
PIN
35
36
26
41
I/O
O
I
I
I
I
In pulse mode, this pin remains in low state at all times.
In tone mode, it will output a dual or single tone. A detailed timing
diagram for tone mode is shown in Figure 2(a), 2(b), 2(c) 2(d).
Power input pins.
Make: Break ratio select pin.
If B/M = V
If B/M = V
B/M pin is pulled to V
Save and mercury select pin.
If S/ M = V
If S/ M = V
S/ M pin is pulled to V
If ATS = V
If ATS = V
ATS pin is pulled to V
R1
R2
R3
R4
C1
C2
C3
Specified
1209
1336
1477
DD
SS
697
770
852
941
DD
SS
DD
SS
, the M/B ratio is 33.3:66.7.
, the M/B ratio is 40:60.
, the auto timer function is disabled.
, the mercury function is selected.
, the auto timer function is enabled.
, the save function is selected.
Output Frequency
- 4 -
DD
Actual
1216
1332
1472
DD
DD
699
766
848
948
by internal resistor.
by internal resistor.
by internal resistor.
FUNCTION
Error %
-0.52
-0.47
-0.30
-0.34
+0.28
+0.74
+0.57
W91550DN SERIES