參數(shù)資料
型號: 73S1217F-68MR/F/PE
廠商: Maxim Integrated Products
文件頁數(shù): 110/140頁
文件大小: 0K
描述: IC SOC SMART CARD READER 68QFN
標(biāo)準(zhǔn)包裝: 2,500
系列: *
DS_1217F_002
73S1217F Data Sheet
Rev. 1.2
71
Keypad Scan Time Register (KSCAN): 0xD3
0x00
This register contains the values of scanning time and debouncing time.
Table 71: The KSCAN Register
MSB
LSB
DBTIME.5 DBTIME.4 DBTIME.3 DBTIME.2 DBTIME.1 DBTIME.0 SCTIME.1 SCTIME.0
Bit
Symbol
Function
KSCAN.7
DBTIME.5
De-bounce time in 4ms increments. 1 = 4ms de-bounce time, 0x3F =
252ms, 0x00 = 256ms. Key presses and key releases are de-bounced by
this amount of time.
KSCAN.6
DBTIME.4
KSCAN.5
DBTIME.3
KSCAN.4
DBTIME.2
KSCAN.3
DBTIME.1
KSCAN.2
DBTIME.0
KSCAN.1
SCTIME.1
Scan time in ms. 01 = 1ms, 02 = 2ms, 00 = 3ms, 00 = 4ms. Time between
checking each key during keypad scanning.
KSCAN.0
SCTIME.0
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