STMPE1801BJR STMicroelectronics, STMPE1801BJR Datasheet - Page 12

• 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

Register address
Table 8.
12/60
Addres
1C
1D
1A
1B
1E
1F
33
34
35
36
19
20
21
22
23
24
30
31
32
37
38
39
s
GPIO_SET_DIR_LOW
GPIO_PULL_UP_MID
GPIO_PULL_UP_HIG
GPIO_SET_DIR_MID
GPIO_SET_DIR_HIG
GPIO_PULL_UP_LO
KPC_COMB_KEY_0
KPC_COMB_KEY_1
KPC_COMB_KEY_2
KPC_CTRL_HIGH
KPC_CTRL_LOW
KPC_COL_HIGH
KPC_CTRL_MID
GPIO_RE_HIGH
KPC_COL_LOW
GPIO_FE_HIGH
GPIO_RE_LOW
STMPE1801 register summary table
GPIO_FE_LOW
Register name
GPIO_RE_MID
GPIO_FE_MID
KPC_ROW
KPC_CMD
W
H
H
Scan count and
Keypad column
dedicated key
GPIO set pin
GPIO pull up
Description
GPIO falling
combination
GPIO rising
Keypad row
Key config:
command
key mask
scanning
scanning
direction
register
Keypad
Keypad
edge
edge
Doc ID 17884 Rev 3
increment
Auto-
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
IO15 IO14 IO13 IO12 IO11 IO10 IO9
IO15 IO14 IO13 IO12 IO11 IO10 IO9
IO15 IO14 IO13 IO12 IO11 IO10 IO9
IO15 IO14 IO13 IO12 IO11 IO10 IO9
COL
DB6 DB5 DB4 DB3 DB2 DB1 DB0
Rsv
IO7
IO7
IO7
IO7
RO
W7
C4
C4
C4
7
7
d
SCAN_COUNT 0-3
COL
B_K
IO6
IO6
IO6
IO6
CM
RO
W6
EY
C3
C3
C3
6
6
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
COL
IO5
IO5
IO5
IO5
W5
RO
C2
C2
C2
5
5
RESERVED
COL
IO4
IO4
IO4
IO4
RO
W4
C1
C1
C1
4
4
COL
IO3
IO3
IO3
IO3
RO
W3
C0
C0
C0
3
3
COL
IO2
IO2
IO2
IO2
W2
DKEY 0-3
RO
R2
R2
R2
2
2
STMPE1801
IO17 IO16
IO17 IO16
IO17 IO16
IO17 IO16
COL
COL
KPC
SCAN_FR
_LC
IO1
IO1
IO1
IO1
RO
W1
R1
R1
R1
K
1
1
9
EQ
COL
COL
SCA
Rsv
IO0
IO8
IO0
IO8
IO0
IO8
IO0
IO8
RO
W0
R0
R0
R0
N
0
0
8
d