STM32TS60 Resistive Multi-Touch Screen Microcontrollers

STMicroelectronics announced their STM32TS60 multi-touch resistive touchscreen controller chip. The STM32TS60 is the first member of ST’s new STMTouch family and provides a very low power, highly reliable alternative to capacitive touch screen solutions. STMTouch is a versatile platform for next-generation consumer devices. The STM32TS60 is housed in a 7 x 7mm 144-pin UFBGA package, and is now sampling to lead customers. Volume production is expected for Q2 2010.

STMicroelectronics STM32TS60 multi-touch resistive touchscreen controller chipWhat is the STMicroelectronics STM32TS60?
The STMicroelectronics STM32TS60 is a resistive multi-touch controller that detects and tracks ten simultaneous touches with very fast response. The single-core STM32TS60 combines the STM32 microcontroller architecture with PMatrix Multi-Touch technology from Stantum. The single-chip solution enables application designers to replace complex menu sequences with more direct and natural user controls using fingers, nails, or stylus. Actions made easier with multi-touch capabilities include browsing and selecting options, handwriting and data entry, arranging and sizing windows, picking up and dragging images, and fast and intuitive game play. Other abilities include drawing pictures, using touch pressure to adjust line thickness.

STM32TS60 Touchscreen Controller Features

  • Patented digital resistive multitouchpanel technology powered by Pmatrix firmware engine
  • Able to track up to 10 independent touches simultaneously
  • Finger, nail and any stylus touch capability
  • Up to 0.17 mm resolution
  • Touch actuation force information
  • No calibration requirements
  • Typical touchpanel scan rate of 125 Hz up to 250 Hz
  • Single- or dual-chip architecture able to support up to 10.1h screens
  • Single-chip controller able to support up to 129 rows/columns coming from the sensor matrix
  • Embedded compensation resistors for reduced BOM and easy connection to the touchpanel
  • I2C, SPI, UART and USB communication interfaces
  • Very low power mode allowing gwakeup on touch/releaseh mode
  • Wakeup response time: 10 µs from Sleep mode and 100 µs from Standby mode

What’s the big deal?
The STM32TS60 controller complements the recent industry trend for using capacitive touch technology. Resistive technology is a cost effective and mature high-volume solution that has seen dramatically improved performance over the past few years in terms of durability and display transparency. In addition, it easily overcomes EMI (electromagnetic interference) noise issues, which can be an inherent limitation with alternative touch technologies. Resistive technology is already widely used in PDAs and similar touch-enabled devices and the screens are readily available in standard LCD sizes and at competitive prices.

More info: STMicroelectronics STM32TS60 Controller (pdf)