STMPE812A
Touchscreen controller S-Touch with PWM and dedicated RESET pin-
Active
The STMPE812A is a 4-wire resistive touchscreen controller with 4-bit port expander integrated. The touchscreen controller is designed to be fully autonomous, requiring only minimal CPU intervention for sampling, filtering and pre-processing operations.
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Datasheet
Key Features
- Integrated 4-wire resistive touchscreen controller, pen-down/real-time mode, fully-autonomous
- 12-bit ADC for high-resolution touchscreen
- Operating voltage 1.65 - 3.6 V
- Low power consumption:
Hibernation mode: 0.5 μA Active mode: 100 μA - Auto-hibernation and hotkey wake-up features
- Up to 3 GPIOs with alternate functions
1 PWM controller 1 general purpose 12-bit ADC input Optional interrupt output pin - Dedicated reset input pin
- 400 kHz I2C interface
- 8 kV HBM, 1 kV CDM ESD protection on X+/X-/Y+/Y-
- 2 kV HBM, 250 V CDM ESD protection on all other pins
Circuit Diagram
Design Resources
TopTechnical Documentation
Product Specifications
| Description | Version | Size |
|---|---|---|
DS7032: Touchscreen controller S-Touch® with PWM and dedicated RESET pin
|
4.0 | 586 KB |
Application Notes
| Description | Version | Size |
|---|---|---|
|
AN2825: S-Touch® STMPE811 resistive touchscreen controller advanced features
|
1.3 | 157 KB |
|
AN3301: S-Touch® STMPE812A: a hardware and software guide
|
1.2 | 458 KB |
Related Tools and Software
Related Tools and Software
| Part Number | Description |
|---|---|
| STSW-MOTOR003 | STMPE812A software reference library for STMPE812A. STMPE812A Functions H File is the header file, while the C File is the main source file |
Sample & Buy
Top| Part Number | Marketing Status | Package | Packing Type | Operating Temperature (min) | Operating Temperature (max) | Automotive Grade | Order From ST | Unit Price (US$)* @ | Distributor Availability | RoHS Compliance Grade | Download Material Declaration** |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STMPE812ABJR | Active | Flip-Chip 500u | Tape And Reel | -40 | 85 | _ |
| Ecopack2 | PDF XML | ||||||||||||
(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors (**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices. |
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