W91473 Datasheet, PDF (6/20 Pages) Winbond – 14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION

W91473 SERIES
BLOCK DIAGRAM
K
E
Y
B
O
A
ROW
R
D
(R1 to R5)
I
N
T
E
R
F
COLUMN
A
C
(C1 to C7)
E
HKS
LOCK
MODE
XT XT
SYSTEM CLOCK
GENERATOR
HFI
C
O
N
T
READ/WRITE
R
COUNTER
O
L
L
O
RAM
G
I
C
LOCATION
LATCH
DRS
P
U
L
S
E
C
O
N
T
R
O
L
L
O
G
I
C
KT
T/P MUTE
HPM MUTE
HFO
DP
DTMF
D/A CONVERTER
ROW & COLUMN
PROGRAMMABLE
COUNTER
DATA LATCH
& DECODER
FUNCTIONAL DESCRIPTION
Keyboard Operation
C1
C2
C3
C4
C5
C6
C7
1
2
3
S
M00 M05 EM1
R1
4
5
6
M01 M06 EM2
R2
7
8
9
CLR M02 M07 EM3
R3
*/T
0
#
R/P M03 M08
H
R4
F1
F2
F3
R
M04 M09 *MER R5
Note: *MER location in W91473C/CL or W91473D/DL is SAVE memory.
• S:Store function key
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