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STMPE2401 数据表(PDF) 42 Page - STMicroelectronics

部件名 STMPE2401
功能描述  24-bit Enhanced port expander with Keypad and PWM controller Xpander logic
PDF  55 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STMPE2401 数据表(HTML) 42 Page - STMicroelectronics

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Keypad controller
STMPE2401
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13.2
KPC_col register
13.3
KPC_row_msb register
Table 38. KPC_col Register
Bit
76
5
4
3
210
Name
Input Column 0 ~ 7
Read/Write
WW
W
W
WWWW
Reset Value
00
0
0
0
000
Bit
Name
Description
7
Input Column 7
‘1’ to turn on scanning of column 7; ‘0’ to turn off
6
Input Column 6
‘1’ to turn on scanning of column 6; ‘0’ to turn off
5
Input Column 5
‘1’ to turn on scanning of column 5; ‘0’ to turn off
4
Input Column 4
‘1’ to turn on scanning of column 4; ‘0’ to turn off
3
Input Column 3
‘1’ to turn on scanning of column 3; ‘0’ to turn off
2
Input Column 2
‘1’ to turn on scanning of column 2; ‘0’ to turn off
1
Input Column 1
‘1’ to turn on scanning of column 1; ‘0’ to turn off
0
Input Column 0
‘1’ to turn on scanning of column 0; ‘0’ to turn off
Table 39. KPC_row_msb register
Bit
7
6
5
4
32
10
Name
ScanPW1
ScanPW0
-
-
Output Row 8 ~ 11
Read/Write
-
-
-
-
WW
WW
Reset Value
1
1
0
0
00
00
Bit
Name
Description
7
ScanPW1
Pulse width setting of keypad scanning. Use “11” at all
times
6
ScanPW0
5-
-
4-
-
3
Output Row 11
‘1’ to turn on scanning of row 11; ‘0’ to turn off
2
Output Row 10
‘1’ to turn on scanning of row 10; ‘0’ to turn off
1
Output Row 9
‘1’ to turn on scanning of row 9; ‘0’ to turn off
0
Output Row 8
‘1’ to turn on scanning of row 8; ‘0’ to turn off



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