W91410 Datasheet, PDF (4/12 Pages) Winbond – TONE/PULSE DIALER WITH SAVE FUNCTION

BLOCK DIAGRAM
W91410 SERIES
HKS
B/M
MODE
XT XT
SYSTEM CLOCK
GENERATION
ROW
(R1 to R4)
KEYBOARD
INTERFACE
READ/WRITE
COUNTER
RAM
COLUMN
(C1 to C4)
LOCATION
LATCH
CONTROL
LOGIC
PULSE
CONTROL
LOGIC
T/P MUTE
DP
DTMF
D/A
CONVERTER
ROW & COLUMN
PROGRAMMABLE
COUNTER
DATA LATCH
& DECODER
FUNCTIONAL DESCRIPTION
Keyboard Operation
C1
C2
1
2
4
5
7
8
*
0
• F: Flash key
• R/P: Redial and pause function key
• P→T: Pulse mode to tone mode
• SAVE: Save memory key
C3
C4
3
SAVE R1
6
F
R2
9
P→T R3
#
R/P
R4
-4-