STMPE1801BJR Datasheet, PDF (41/60 Pages) STMicroelectronics – Xpander Logic 18-bit enhanced port expander with keypad controller

STMPE1801
Keypad controller
KPC_ROW
7
6
5
4
3
Input Row 0 - 7
RW
RW
RW
RW
RW
0
0
0
0
0
Address:
30
Type:
R/W
Reset:
0x00
Description:
Keypad row scanning
[7:0] Input row 0 – 7:
‘1’: Turn on scanning of the corresponding row
.‘0’: Turn off
Keypad controller row register
2
1
0
RW
RW
RW
0
0
0
KPC_COL_HIGH
Keypad controller column (HIGH)
15
14
13
12
11
10
RESERVED
R
R
R
R
R
R
0
0
0
0
0
0
9
8
Output Column 8 - 9
RW
RW
0
0
Address:
32
Type:
R/W
Reset:
0x00
Description:
Keypad column scanning register.
[15:10] RESERVED
[9:8] OUTPUT COLUMN 8-9:
‘1’: Turn on scanning of the corresponding column.
‘0’: Turn off
Doc ID 17884 Rev 3
41/60