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W9145AL View Datasheet(PDF) - Winbond

Part NameDescriptionManufacturer
W9145AL 15-MEMORY TONE/PULSE DIALER WITH LOCK AND HANDFREE FUNCTIONS Winbond
Winbond Winbond
W9145AL Datasheet PDF : 18 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
W9145 SERIES
Pin Description, continued
SYMBOL 22-PIN
DTMF
11
24-PIN
11
I/O
FUNCTION
O In pulse mode, remains in low state at all times. In tone
mode, will output a dual or single tone. Detailed timing
diagram for tone mode is shown in Figure 2(a, b).
OUTPUT FREQUENCY (Hz)
Specified
Actual
Error %
R1
697
699
+0.28
R2
770
766
-0.52
R3
852
848
-0.47
R4
941
948
+0.74
C1
1209
1216
+0.57
C2
1336
1332
-0.30
C3
1477
1472
-0.34
BLOCK DIAGRAM
ROW
(R1 to R5)
COLUMN
(C1 to C4)
DTMF
KEYBOARD
INTERFACE
XT
XT
HKS
SYSTEM CLOCK
B/M
MODE
GENERATOR
HFI
READ/WRITE
COUNTER
CONTROL
LOGIC
LOCK
TEST
PULSE
CONTROL
LOGIC
RAM
X MUTE
T/P MUTE
KT
HFO
DP/C5
LOCATION
LATCH
D/A CONVERTER
ROW & COLUMN
PROGRAMMABLE
COUNTER
DATA LATCH
& DECODER
Publication Release Date: August 1996
-5-
Revision A4
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