LC75817NW View Datasheet(PDF) - SANYO -> Panasonic
Part Name
Description
Manufacturer
LC75817NW
SANYO -> Panasonic
LC75817NW Datasheet PDF : 43 Pages
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2. Interrupt based key data acquisition
• Flowchart
LC75817NE, 75817NW
CE = L
DO = L
NO
YES
Key data read
processing
Wait for at least t10
CE = L
NO
DO = H
YES
Key off
• Timing chart
Key input
Key on
Key on
Key scan
CE
DI
DO
t5
t5
t6
t5
t8
Key address
t7 Key data read
t8
t7
t8
t7
t8
t7
Key data read request
Controller
determination
(Key on)
t10
Controller
determination
(Key off)
Controller
determination
(Key on)
t10
Controller
determination
(Key on)
t10
Controller
determination
(Key on)
t10
Controller
determination
(Key off)
t5: Key scan execution time when the key data agreed for two key scans. (4800T(s))
t6: Key scan execution time when the key data did not agree for two key scans and the key scan was executed again. (9600T(s))
t7: Key address (43H) transfer time
t8: Key data read time
1
T = ———
fosc
No. 6144-40/43
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