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STMPE1801 Datasheet(PDF) 50 Page - STMicroelectronics

Part # STMPE1801
Description  Xpander Logic™ 18-bit enhanced port expander with keypad controller
PDF  60 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STMPE1801 Datasheet(HTML) 50 Page - STMicroelectronics

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Keypad controller
STMPE1801
50/60
Doc ID 17884 Rev 3
11.4
Keypad combination key registers
The 3 keypad controller mask registers contains the key combination to be used to wake up
the KPC and send an interrupt to the host system.
KPC_COMB_KEY_n
Keypad combination [n = 0-2]
Address:
38, 39
Type:
R/W
Reset:
0xF8
Description:
Keypad combination key mask registers.
Valid key press value must be entered. The valid range for STMPE1801 is 00 to 4F. Any
other value outside this range is not accepted and a none value of F8 is returned.
76
5
4
3
2
1
0
C4
C3
C2
C1
C0
R2
R1
R0
RW
RW
RW
RW
RW
RW
RW
RW
11
1
1
1
0
0
0
[7:3] C[4:0]: Column number of key n (valid range: 00000 – 01001)
[2:0] R[2:0]: Row number of key n (valid range: 000 – 111)



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