73S1217F-68MR/F/PE Maxim Integrated, 73S1217F-68MR/F/PE Datasheet - Page 70
![no-image](/images/no-image-200.jpg)
73S1217F-68MR/F/PE
Manufacturer Part Number
73S1217F-68MR/F/PE
Description
8-bit Microcontrollers - MCU
Manufacturer
Maxim Integrated
Datasheet
1.73S1217F-68MRFPE.pdf
(140 pages)
Specifications of 73S1217F-68MR/F/PE
Rohs
yes
Core
80515
Data Bus Width
8 bit
Part # Aliases
90-W1217+TF5
- Current page: 70 of 140
- Download datasheet (942Kb)
Keypad Column Register (KCOL): 0xD1
This register contains the value of the column of a key detected as valid by the hardware. In bypass
mode, this register firmware writes directly this register to carry out manual scanning.
Keypad Row Register (KROW): 0xD2
This register contains the value of the row of a key detected as valid by the hardware. In bypass mode,
this register firmware reads directly this register to carry out manual detection.
70
KROW.7
KROW.6
KROW.5
KROW.4
KROW.3
KROW.2
KROW.1
KROW.0
KCOL.7
KCOL.6
KCOL.5
KCOL.4
KCOL.3
KCOL.2
KCOL.1
KCOL.0
Bit
Bit
MSB
MSB
–
–
Symbol
Symbol
ROW.6
ROW.4
ROW.3
ROW.2
ROW.1
ROW.0
COL.4
COL.3
COL.2
COL.1
COL.0
–
–
–
–
–
–
–
Drive lines bit mapped to corresponding with pins COL(4:0). When a key
is detected, firmware reads this register to determine column. In bypass
(S/W keyscan) mode, Firmware writes this register directly. 0x1E =
COL(0) low, all others high. 0x0F = COL(4) low, all others high. 0x1F =
COL(4:0) all high.
Sense lines bit mapped to correspond with pins ROW(5:0). When key
detected, firmware reads this register to determine row. In bypass mode,
firmware reads rows and has to determine if there was a key press or not.
0x3E = ROW(0) low, all others high. 0x1F = ROW(5) low, all others high.
0x3F = ROW(5:0) all high.
ROW.5
Table 70: The KROW Register
–
Table 69: The KCOL Register
0x3F
ROW.4
COL.4
0x1F
ROW.3
COL.3
Function
Function
ROW.2
COL.2
ROW.1
COL.1
ROW.0
COL.0
LSB
LSB
Rev. 1.2
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