STMPE1801BJR STMicroelectronics, STMPE1801BJR Datasheet - Page 44

• 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_CTRL_HIGH
Address:
Type:
Reset:
Description:
KPC_CMD
Address:
Type:
Reset:
Description:
44/60
RSVD
RSVD
R
R
7
0
7
0
[7:4] RESERVED
[5:2] RESERVED
[1:0] SCAN_FREQ:
[7:2] RESERVED
CMB_KEY
[6] CMB_KEY:
[1] KPC_LOCK:
RSVD
RW
R
6
1
6
0
35
R/W, R
0x40
Keypad data register.
Combination key mode
1: AND function for combination-key interrupt (default).
0: OR function for combination-key interrupt.
Scan frequency based on internal 32KHz clock
00: 60 Hz (default)
01: 30 Hz
10: 15 Hz
11: 275 Hz
36
R/W, R
0x00
Keypad command register.
Keypad lock control bit
1: Writing 1 to enter key pad lock state when the key press stops.
RSVD
R
R
5
0
5
0
RSVD
R
R
4
0
4
0
Doc ID 17884 Rev 3
RESERVED
RSVD
R
R
3
0
3
0
Keypad controller control (High)
RSVD
R
R
2
0
2
0
Keypad command register
KPC_LOCK
RW
1
0
1
SCAN_FREQ
RW
0
STMPE1801
SCAN
RW
0
0
0