STMPE2401TBR STMicroelectronics, STMPE2401TBR Datasheet - Page 42

• Manufacturer Part Number: STMPE2401TBR
• Description: IC I/O EXPANDER I2C 24B 36TFBGA
• Manufacturer: STMicroelectronics

Specifications of STMPE2401TBR

• Interface: I²C
• Number Of I /o: 24
• Interrupt Output: Yes
• Frequency - Clock: 400kHz
• Voltage - Supply: 1.65 V ~ 1.95 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 36-TFBGA
• Includes: Keypad, POR, PWM
• For Use With: 497-6426 - BOARD EVAL BASED ON STMPE2401
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-6133-2

Keypad controller
13.2
13.3
42/55
KPC_col register
Table 38. KPC_col Register
KPC_row_msb register
Table 39. KPC_row_msb register
Reset Value
Reset Value
Read/Write
Read/Write
Name
Name
Bit
Bit
Bit
Bit
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
ScanPW1
W
7
0
Input Column 7
Input Column 6
Input Column 5
Input Column 4
Input Column 3
Input Column 2
Input Column 1
Input Column 0
7
1
-
Output Row 11
Output Row 10
Output Row 9
Output Row 8
ScanPW1
ScanPW0
Name
Name
ScanPW0
-
-
W
6
0
6
1
-
W
5
0
‘1’ to turn on scanning of column 7; ‘0’ to turn off
‘1’ to turn on scanning of column 6; ‘0’ to turn off
‘1’ to turn on scanning of column 5; ‘0’ to turn off
‘1’ to turn on scanning of column 4; ‘0’ to turn off
‘1’ to turn on scanning of column 3; ‘0’ to turn off
‘1’ to turn on scanning of column 2; ‘0’ to turn off
‘1’ to turn on scanning of column 1; ‘0’ to turn off
‘1’ to turn on scanning of column 0; ‘0’ to turn off
5
0
-
-
Pulse width setting of keypad scanning. Use “11” at all
times
-
-
‘1’ to turn on scanning of row 11; ‘0’ to turn off
‘1’ to turn on scanning of row 10; ‘0’ to turn off
‘1’ to turn on scanning of row 9; ‘0’ to turn off
‘1’ to turn on scanning of row 8; ‘0’ to turn off
Input Column 0 ~ 7
W
4
0
4
0
-
-
W
3
0
W
3
0
Description
Description
Output Row 8 ~ 11
W
2
0
W
2
0
W
1
0
W
1
0
STMPE2401
W
W
0
0
0
0