73s1217f68im Maxim Integrated Products, Inc., 73s1217f68im Datasheet - Page 71
73s1217f68im
Manufacturer Part Number
73s1217f68im
Description
Bus-powered 80515 System-on-chip With Usb, Iso 7816 / Emv, Pinpad And More
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.73S1217F68IM.pdf
(140 pages)
- Current page: 71 of 140
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Keypad Scan Time Register (KSCAN): 0xD3
This register contains the values of scanning time and debouncing time.
Rev. 1.2
KSCAN.7
KSCAN.6
KSCAN.5
KSCAN.4
KSCAN.3
KSCAN.2
KSCAN.1
KSCAN.0
MSB
DBTIME.5 DBTIME.4 DBTIME.3 DBTIME.2 DBTIME.1 DBTIME.0 SCTIME.1 SCTIME.0
Bit
DBTIME.5
DBTIME.4
DBTIME.3
DBTIME.2
DBTIME.1
DBTIME.0
SCTIME.1
SCTIME.0
Symbol
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.
Scan time in ms. 01 = 1ms, 02 = 2ms, 00 = 3ms, 00 = 4ms. Time between
checking each key during keypad scanning.
Table 71: The KSCAN Register
0x00
Function
LSB
71
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