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Low-cost microcontroller series supporting capacitive sensor CapTIvate™ technology
The "MSP430FR25x2" microcontroller is a microcontroller product that supports CapTIvate technology, which was introduced in the technical article "Capacitive touch sensing can be realized with just a microcontroller! What is CapTIvate technology?"
This product is a capacitive sensing microcontroller from Texas Instruments (hereafter TI) that is particularly recommended for low-cost applications.
This article discusses the following features of the MSP430FR25x2:
- TI's ultra-low power consumption microcontroller MSP430FR series
- Equipped with next-generation memory FRAM that is non-volatile and capable of high-speed writing
- Microcontrollers that support CapTIvate technology
1. TI's ultra-low power consumption microcontroller MSP430FR series
The MSP430 has a low power consumption core of less than 100uA/MHz in 100uA/MHz active mode and less than 3500nA in RTC standby mode. In addition, it has seven low power consumption modes, and since it starts up quickly from the low power consumption mode, it achieves the lowest power consumption in the industry.
2. Equipped with next-generation memory FRAM that is non-volatile and capable of high-speed writing
Ferroelectric Random Access Memory (FRAM) is non-volatile like flash, but supports high-speed, low-power writes, with over 1000 trillion write endurance and excellent flexibility. It has the ability (*).
*FRAM can be written/read at high speed and can be handled like SRAM. Therefore, it is possible to flexibly change the program area and data area.
3. Microcontrollers that support CapTIvate technology
CapTIvate technology is a peripheral that converts capacitance into a digital value, built into TI's MSP430 microcontroller series. This technology is only installed in the following 6 products. Due to its high sensitivity to changes in capacitance, CapTIvate technology also supports metal overlays, in which case deflection of the metal overlay is measured from changes in capacitance.
| Product model number | MSP430FR2512 | MSP430FR2522 | MSP430FR2532 | MSP430FR2632 | MSP430FR2533 | MSP430FR2633 |
| FRAM/RAM | 8KB/2KB | 8KB/2KB | 8KB/1KB | 8KB/2KB | 16KB/2KB | 16KB/4KB |
| number of buttons | up to 4 | up to 16 | up to 8 | up to 16 | up to 16 | up to 64 |
| I/O for Capacitive Sensing | 4 | 8 | 8 | 8 | 16 | 16 |
| Sensing block | 1 | 2 | 4 | 4 | 4 | 4 |
| package | 16-pin TSSOP 20-pin QFN |
16-pin TSSOP 20-pin QFN |
24-pin QFN | 24-pin TSSOP and DSBGA | 32-pin TSSOP and QFN | 32-pin TSSOP and QFN 24-pin DSBGA |
"BOOSTXL-CAPKEYPAD" evaluation kit for immediate evaluation
BOOSTXL-CAPKEYPAD is an evaluation module for the MSP430FR2522 capacitive touch sensing MCU with CapTIvate technology.
* BOOSTXL-CAPKEYPAD alone cannot be developed.
It can be used with other LaunchPad™ development kits from TI, the CapTIvate Development Kit (MSP-CAPT-FR2633), or the CapTIvate Programmer Board (CAPTIVATE-PGMR).
Features
- MSP430FR2522 MSP430 MCU with CapTIvate Technology
- 40-pin BoosterPack standard to leverage the LaunchPad ecosystem
- CapTIvate programming header for interfacing with CAPTIVATE-PGMR
- Proximity-sensitive numeric keypad with 12 touch buttons
- Integrated LP3943 LED driver for backlight
Application example
- Electronic smart locks, door keypads, readers
- garage door system
- Intrusion prevention HMI keypad and intrusion control panel
- elevator call button
- personal electronics
- Wireless speakers and headsets
- A/V receiver
- Home appliances
- power tools
- light switch
- doorbell with video
Product Summary
| Type name | MSP430FR2522/MSP430FR2512 |
| specification |
|
Click here for recommended articles/materials
Capacitive touch sensing can be realized only with a microcomputer! What is CapTIvate Technology?
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Set up your design environment in minutes with the CapTIvate Design Center GUI
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Reference design to display touch sensing results on LCD with CapTIvate
What is a sensor? Basic knowledge for digitization and IoT
Click here for product price information and availability
Click here for manufacturer site/other related links
Capacitive Sensing MCUs Overview
CapTIvate™ Technology Guide
MSP MCU Training Series with CapTIvate™ Technology Video
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