STEVAL-TCS003V1 STMicroelectronics, STEVAL-TCS003V1 Datasheet - Page 51

• Manufacturer Part Number: STEVAL-TCS003V1
• Description: BOARD DEMO EXPANDER STMPE2403
• Manufacturer: STMicroelectronics

Specifications of STEVAL-TCS003V1

• Main Purpose: Interface, GPIO Expander
• Embedded: No
• Utilized Ic / Part: STMPE2403
• Primary Attributes: 8/16/24-Bit 24-Port GPIO Expander over I2C
• Secondary Attributes: 3 8-Bit PWM Output for LEDs, Keyboard Matrix Scan, Special Key Support
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8206

STMPE2403
12.7
12.8
KPC_ctrl_lsb register
Table 50. Bit description
Data registers
The KPC_DATA register contains three bytes of information. The first two bytes store the key
coordinates and status of any two keys from the normal key matrix, while the third byte store
the status of dedicated keys.
KPC_data_byte0 Register
Table 51. Bit description
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
Up/Down
RW
7
0
R
7
1
Up/Down
Name
SCAN
DB_6
DB_5
DB_4
DB_3
DB_2
DB_1
DB_0
Name
R3
R2
R1
R0
C2
C1
C0
RW
6
0
R3
R
6
1
RW
5
0
R2
0-128ms of de-bounce time
‘1’ to start scanning; ‘0’ to stop
R
5
1
‘0’ for key-down, ‘1’ for key-up
row number of key 1 (valid range : 0-11)
0x1111 for No Key
column number of key 1 (valid range : 0-7)
DB_0 ~ 5
RW
4
0
R1
R
4
1
RW
3
0
R0
R
3
1
Description
Description
RW
2
0
C2
R
2
0
Keypad controller
RW
1
0
C1
R
1
0
SCAN
RW
C0
0
0
R
0
0
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