W9145AL Winbond, W9145AL Datasheet - Page 5

• Manufacturer Part Number: W9145AL
• Description: 15-MEMORY TONE/PULSE DIALER WITH LOCK AND HANDFREE FUNCTION
• Manufacturer: Winbond

Pin Description, continued
BLOCK DIAGRAM
SYMBOL
DTMF
(R1 to R5)
(C1 to C4)
COLUMN
DTMF
ROW
22-PIN
11
D/A CONVERTER
24-PIN
KEYBOARD
INTERFACE
11
I/O
O
MODE
LOCATION
LATCH
HKS
READ/WRITE
COUNTER
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).
RAM
ROW & COLUMN
PROGRAMMABLE
COUNTER
R1
R2
R3
R4
C1
C2
C3
HFI
- 5 -
Specified
SYSTEM CLOCK
GENERATOR
XT
OUTPUT FREQUENCY (Hz)
1209
1336
1477
697
770
852
941
CONTROL
LOGIC
XT
FUNCTION
Publication Release Date: August 1996
DATA LATCH
& DECODER
LOCK
TEST
Actual
1216
1332
1472
699
766
848
948
B/M
PULSE
CONTROL
LOGIC
W9145 SERIES
Error %
+0.28
+0.74
+0.57
-0.52
-0.47
-0.30
-0.34
KT
X MUTE
T/P MUTE
HFO
DP/C5
Revision A4