The MPR121 features increased internal intelligence.
Freescale Semiconductor (Austin, TX) is expanding its broad portfolio of touch sensing solutions with the addition of the MPR121 ultra-low-power capacitive sensor. The MPR121 is the second-generation sensor controller, following the MPR03x series devices. The MPR121 features increased internal intelligence and Freescale’s second-generation capacitance detection engine, without increasing complexity. Features include:
- Support for up to 12 touch electrodes.
- 1.71 to 3.6 V operation.
- Extremely low power, with 29 micro amps average supply current.
- All 12 electrodes monitored with 16 ms response time.
- Continuous independent auto-calibration for each electrode.
- Separate touch and release trip thresholds for each electrode.
- Hysteresis and electrode independence.
- Drives up to 8 LEDs or provides up to 8 logic I/Os in any combination.
- 3 micro amps maximum shutdown current.
- I²C interface with IRQ output to advise electrode status changes.
- 3 x 3 x 0.6 mm 20-lead QFN package.
- -40° to +85°C operating temperature range.
For more information visit www.freescale.com
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