STM8T143
Single-channel capacitive sensor for touch and proximity detection-
Active
The STM8T143 is a single channel, fully integrated, touch sensing capacitive sensor. It uses a ProxSense™ charge transfer capacitive acquisition method that is capable of near range proximity detection. The STM8T143 offers a state of the art capacitive sensing engine with an embedded sampling capacitor and voltage regulator allowing the overall solution cost to be reduced and improving system immunity in noisy environments. It can target a detection range up to 20 cm thanks to the electrode parasistic capacitance compensation (EPCC) feature. The EPCC automatically compensates ground parasitic capacitance sources (such as ground planes, printed circuit board tacks, and large metal objects) which significantly reduce the proximity detection range.
The application fields or typical functions with proximity features are various and include: on/off switches, replacement/enhancement, home buttons, backlighting feature on proximity for user interfaces, wakeup or control function on proximity, find-in-the-dark for lighting equipment, and companion device for battery saving in portable equipment.
The device has been designed to be used in applications where proximity is required and touch conditions can prevail for an extended period of time which may result in uncompensated drift in conventional capacitive sensors. Therefore, a process called DYCAL is implemented.
The STM8T143 is an ideal alternative, cost-effective, and extremely low power solution to replace conventional infrared optical proximity sensors. Capacitive sensing technology is not sensitive to sunlight or artificial light effects. The STM8T143 offers a much lower consumption (12 μA range versus 100 μA range) and a small form factor (DFN8 2*3*0.65 mm). Lastly, there is no need for a clear opening on the bezel to let light pass through.
The STM8T143 is offered in 8-pin packages and features both touch and proximity sensing outputs.
The STM8T143 touch pad can sense through almost any dielectric and thereby allows the electronics to be contained in a sealed enclosure.
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Datasheet
Key Features
- Touch and short range proximity detection
- Internal sampling capacitor
- On-chip integrated voltage regulator
- Automatic electrode tuning (AET)
- Electrode parasitic capacitance compensation (EPCC)
- Dynamic calibration (DYCAL™)
- Environment control system (ECS)
- User programmable options include:
- Configurable output modes
- Configurable sensitivity levels
- Data streaming mode
- Low power management
Design Resources
TopTechnical Documentation
Product Specifications
| Description | Version | Size |
|---|---|---|
DS7058: Single-channel capacitive sensor for touch and proximity detection
|
5.0 | 1,962 KB |
Application Notes
| Description | Version | Size |
|---|---|---|
|
AN1015: Software techniques for improving microcontroller EMC performance
|
1.7 | 104 KB |
|
AN1181: Electrostatic discharge sensitivity measurement
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1.4 | 59 KB |
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AN1709: EMC design guide for ST microcontrollers
|
1.7 | 657 KB |
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AN2639: Soldering recommendations and package information for Lead-free ECOPACK® microcontrollers
|
2.4 | 209 KB |
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AN2658: Using the analog to digital converter of the STM8S microcontroller
|
2.3 | 183 KB |
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AN2719: Precision improvement techniques for the A/D converter of the STM8 microcontroller
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2.4 | 238 KB |
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AN2869: Guidelines for designing touch sensing applications
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6.0 | 980 KB |
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AN2927: RC acquisition principle for touch sensing applications
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2.3 | 156 KB |
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AN2970: Principles of capacitive touch and proximity sensing technology
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1.4 | 397 KB |
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AN3150: Guidelines to optimize proximity detection with STM8T141 and STM8T143 capacitive sensors
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2.0 | 738 KB |
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AN3181: Guidelines for obtaining IEC 60335 Class B certification in an STM8 application
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2.0 | 428 KB |
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AN3431: How to design a PresSense pressure touch button
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1.2 | 347 KB |
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AN3960: ESD considerations for touch sensing applications
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1.1 | 634 KB |
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AN4243: The L6230 DMOS driver for three-phase brushless DC motor
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1.0 | 933 KB |
Technical Notes & Articles
| Description | Version | Size |
|---|---|---|
|
TN0075: Touch sensing software library (TSSL) frequently asked and anticipated questions (FAAQs)
|
1.6 | 61 KB |
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TN0900: Interfacing STM8T143 output in open-drain mode
|
1.0 | 62 KB |
User Manual
| Description | Version | Size |
|---|---|---|
|
UM0470: STM8 SWIM communication protocol and debug module
|
3.3 | 532 KB |
|
UM1515: STEVAL-ICB010V1 AirNavigationPad based on the STM8T143
|
1.0 | 1,621 KB |
Programming Manual
| Description | Version | Size |
|---|---|---|
|
PM0083: How to program STM8T143 OTP options
|
3.0 | 406 KB |
Errata Sheet
| Description | Version | Size |
|---|---|---|
|
ES0008: STM8T143 device limitations
|
3.1 | 194 KB |
Device Option List
| Description | Version | Size |
|---|---|---|
STM8T143 option list
|
5.0.0 | 1 KB |
Presentations & Training Material
Presentations
| Description | Version | Size |
|---|---|---|
|
STM32 and STM8 embedded software solutions
|
1,771 KB |
Related Tools and Software
Related Tools and Software
| Part Number | Description |
|---|---|
| EWSTM8 | IAR Embedded Workbench with its optimizing C compiler provides full support for devices in the STM8A, STM8L, and STM8S series and generates very compact and efficient code. 8kB KickStart edition free of charge, limited to 8K bytes of code. |
| IDEA | Cosmic's toolchain for the STM8 family is part of a complete and uniform product line incorporating over 20 years of innovative design and development. Cosmic tools for STM8, 32K Special Edition limited to 32K bytes of code, one year free license available at Cosmic. |
| RIDE | Raisonance IDE that drives the RLink and Signum JTAGjet in-circuit emulators. |
| ST-LINK | In-circuit debugger and programmer for STM8 and STM32 MCUs; with IAR EWARM and Keil RVMDK and ST toolset |
| ST-TSLINK | In-circuit debugger and programmer for STM8T devices |
| STM-STUDIO | STM Studio run-time variables monitoring and visualization tool |
| STM8/128-MCKIT | Motor control starter kit for STM8S (128KB flash) microcontrollers |
| STM8T141-EVAL | STM8T141-EVAL evaluation kit |
| STM8T143-EVAL | Evaluation board for STM8T143 Touch sensing devices |
| STM8T14X-SB | Socket board to enable programming of STM8T141/142 devices in SO8 or DFN8 packages |
| STSW-MCU005 | STM32 and STM8 Flash loader demonstrator |
| STSW-STM8004 | STM8 optimized I2C examples (AN3281) |
| STSW-STM8006 | Example of implementation of user bootloader (AN2659) |
| STSW-STM8025 | STM8S DALI library example |
| STSW-STM8026 | STM8S optimized examples package |
| STSW-STM8040 | Production programming solutions for STM8 |
| STSW-STM8045 | Audio software codec for the STM8S |
| STSW-STM8048 | Precision improvement techniques for the A/D converter of the STM8 microcontroller |
| STSW-STM8049 | Basic in-application programming example using the STM8 I2C and SPI peripherals |
| STSW-STM8050 | Real-time keeping on STM8S devices and usage of auto-wakeup unit (AWU) and beeper |
| STSW-STM8051 | UART emulation software in STM8S microcontrollers |
| STSW-STM8052 | STM8S high speed internal oscillator calibration |
| STSW-STM8053 | STM8S family power management |
| STSW-STM8060 | Using the STM8S-DISCOVERY GPIOs and interrupt controller to drive LEDs (AN3266) |
| STSW-STM8062 | STM8S in-application programming (IAP) using a customized bootloader |
| STSW-STM8063 | Interfacing an HD44780 2-Line LCD display with the STM8SVLDISCOVERY |
| STSW-STM8064 | Setup screensaver STM8 1024x768 |
| STSW-STM8065 | Setup screensaver STM8 1280x1024 |
| STSW-STM8068 | Erase/write routines for STM8 ROM bootloader (UM0560) |
| STSW-STM8075 | STM8 Class B firmware package variations (AN3181) |
| STVD | ST Visual develop IDE for developing ST7 and STM8 applications |
| STVP | ST Visual Programmer for programming ST7, STM8, STM8T and STM32 |
Publications and Collaterals
Brochure
| Description | Version | Size |
|---|---|---|
|
STM8 8-bit MCU family
|
1,865 KB |
Sample & Buy
Top| Part Number | Marketing Status | Package | Packing Type | Operating Temperature (min) | Operating Temperature (max) | Automotive Grade | Order From ST | Unit Price (US$)* @ 10000 | Distributor Availability | RoHS Compliance Grade | Download Material Declaration** |
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STM8T143AM62T | Active | SO-8 | Tube | -40 | 85 | _ | - | .51 | No data reported, please contact our Distributors | Ecopack2 | - | |
| STM8T143AU62TTR | Active | UFDFPN 8 2x3x0.6 | Tape And Reel | -40 | 85 | _ | - | .466 | No data reported, please contact our Distributors | Ecopack2 | PDF XML | |
| STM8T143AUMEI2TR | Active | UFDFPN 8 2x3x0.6 | Tape And Reel | -40 | 85 | _ | - | No data reported, please contact our Distributors | 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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