STMPE812ABJR STMicroelectronics, STMPE812ABJR Datasheet - Page 35
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STMPE812ABJR
Manufacturer Part Number
STMPE812ABJR
Description
Touch Screen Converters & Controllers Touchscreen cntrlr S-Touch
Manufacturer
STMicroelectronics
Type
Resistive Touch Controllersr
Datasheet
1.STMPE812ABJR.pdf
(53 pages)
Specifications of STMPE812ABJR
Rohs
yes
Input Type
1 TSC
Data Rate
400 kbps
Resolution
12 bit
Interface Type
4-wire, I2C
Supply Voltage
1.65 V to 3.6 V
Supply Current
100 uA
Operating Temperature
- 40 C to + 85 C
Package / Case
CSP-12
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
STMPE812ABJR
Manufacturer:
SMSC
Quantity:
154
Part Number:
STMPE812ABJR
Manufacturer:
ST
Quantity:
20 000
STMPE812A
TSC detect config
Address:
Type:
Reset:
Description:
7
1
PenStrength[1:0]
[7:6] PenStrength[1:0]
[5:3] TDetDly[2:0]
[2:0] Settling[2:0]
6
0
0x41
R/W
0xA4
Touchscreen controller detection configuration 1 register.
Pen detect strength threshold
‘00’ – least sensitive (50 K pull-up)
‘01’ – sensitive (40 K pull-up)
‘10’ – more sensitive (30 K pull-up) - Default
‘11’ – most sensitive (20 K pull-up)
Touch detect delay
‘000’ = 40 µs
‘001’ = 80 µs
‘010’ = 160 µs
‘011’ = 320 µs
‘100’ = 640 µs - Default
‘101’ = 1.28 ms
‘110’ = 2.56 ms
‘111’ = 5.12 ms
Panel driver settling time
‘000’ = 40 µs
‘001’ = 80 µs
‘010’ = 160 µs
‘011’ = 320 µs/ns
‘100’ = 640 µs - Default
‘101’ = 1.28 ms
‘110’ = 2.56 ms
‘111’ = 5.12 ms
For large panels (> 6 inches), a capacitor of 10 nF is recommended at the touchscreen
terminals for noise filtering. In this case, settling time of 1 ms or more is recommended.
5
1
TDetDly[2:0]
4
0
Doc ID 18225 Rev 4
3
0
TSC detection configuration 1 register
2
1
Settling[2:0]
Touchscreen controller
1
0
0
0
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