STMPE1801BJR STMicroelectronics, STMPE1801BJR Datasheet - Page 42

• Manufacturer Part Number: STMPE1801BJR
• Description: Touch Screen Converters & Controllers Xpander Logic 18-Bit 18 GPIO 1.65 to 3.6V
• Manufacturer: STMicroelectronics

Specifications of STMPE1801BJR

• Rohs: yes
• Input Type: 1 Keypad
• Data Rate: 400 kbps
• Resolution: 18 bit
• Interface Type: I2C
• Supply Voltage: 1.65 V to 3.6 V
• Supply Current: 28 uA
• Operating Temperature: - 40 C to + 85 C
• Package / Case: CSP-25
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 1.65 V

Keypad controller
KPC_COL_LOW
Address:
Type:
Reset:
Description:
KPC_CTRL_LOW
Address:
Type:
Reset:
Description:
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RW
RW
7
0
7
0
[7:0] OUTPUT COLUMN 0-7:
[7:4] SCAN_COUNT_0-3:
[3] DKEY_3: Set ‘1’ to use input row 3 as dedicated key
[2] DKEY_2: Set ‘1’ to use input row 2 as dedicated key
[1] DKEY_1: Set ‘1’ to use input row 1 as dedicated key
[0] DKEY_0: Set ‘1’ to use input row 0 as dedicated key
SCAN_COUNT 0 – 3
RW
RW
6
0
6
0
31
R/W
0x00
Keypad column scanning register.
‘1’: Turn on scanning of the corresponding column.
‘0’: Turn off
33
R/W
0x00
Keypad control register.
Number of key scanning cycles elapsed before a confirmed key data is updated into output
data FIFO (0-15 cycles)
RW
RW
5
0
5
0
RW
RW
4
0
4
0
Doc ID 17884 Rev 3
Output Column 0 - 7
RW
RW
3
0
3
0
Keypad controller column (LOW)
Keypad controller control (Low)
RW
RW
2
0
2
0
DKEY 0 – 3
RW
RW
1
0
1
0
STMPE1801
RW
RW
0
0
0
0