STMPE2403TBR STMicroelectronics, STMPE2403TBR Datasheet - Page 51

• Manufacturer Part Number: STMPE2403TBR
• Description: IC I/O EXPANDER I2C 24B 36TFBGA
• Manufacturer: STMicroelectronics

Specifications of STMPE2403TBR

• 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: 497-8206 - BOARD DEMO EXPANDER STMPE2403
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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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