參數(shù)資料
型號(hào): LC75700T-TLM-E
廠商: ON Semiconductor
文件頁(yè)數(shù): 7/16頁(yè)
文件大?。?/td> 0K
描述: IC KEY SCANNING LSI 20TSSOP
標(biāo)準(zhǔn)包裝: 2,000
系列: *
2. Interrupt based key data acquisition
(1) Flowchart
(2) Timing chart
No. 7632-15/16
LC75700T
Key data read
processing
YES
No
DO = "L"
CE = "L"
Wait time of
at least t8
Key OFF
CE = "L"
NO
DO = "H"
t3: Key scan execution time when the key data agreed for two key scans (615T (s))
t4: Key scan execution time when the key data did not agree for two key scans and
the key scan was executed again. (1230T(s))
t5: Key address (63H) transfer time
t6: Key data read time
T=
1
fosc
Key on
Controller
determination
(Key on)
Key data read request
Key data read
DO
DI
CE
Key on
Key
address
Key scan
Key input
t8
t3
t4
t6
t5
t6
t3
t5
Controller
determination
(Key off)
Controller
determination
(Key on)
Controller
determination
(Key on)
Controller
determination
(Key on)
Controller
determination
(Key off)
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