CC2640R2FYFVT.B datasheet(38/74 Pages) TI2

38 / 74 page

9.5 Sensor Controller

The Sensor Controller contains circuitry that can be selectively enabled in standby mode. The peripherals in this

domain may be controlled by the Sensor Controller Engine, which is a proprietary power-optimized CPU. This

CPU can read and monitor sensors or perform other tasks autonomously, thereby significantly reducing power

consumption and offloading the main CM3 CPU. The GPIOs that can be connected to the Sensor Controller are

listed in Table 9-1.

The Sensor Controller is set up using a PC-based configuration tool, called Sensor Controller Studio, and

potential use cases may be (but are not limited to):

• Analog sensors using integrated ADC

• Digital sensors using GPIOs, bit-banged I2C, and SPI

• UART communication for sensor reading or debugging

• Capacitive sensing

• Waveform generation

• Pulse counting

• Keyboard scan

• Quadrature decoder for polling rotation sensors

• Oscillator calibration

Note

Texas Instruments provides application examples for some of these use cases, but not for all of them.

The peripherals in the Sensor Controller include the following:

• The low-power clocked comparator can be used to wake the device from any state in which the comparator is

active. A configurable internal reference can be used in conjunction with the comparator. The output of the

comparator can also be used to trigger an interrupt or the ADC.

• Capacitive sensing functionality is implemented through the use of a constant current source, a time-to-digital

converter, and a comparator. The continuous time comparator in this block can also be used as a higher-

accuracy alternative to the low-power clocked comparator. The Sensor Controller will take care of baseline

tracking, hysteresis, filtering and other related functions.

• The ADC is a 12-bit, 200-ksamples/s ADC with eight inputs and a built-in voltage reference. The ADC can be

triggered by many different sources, including timers, I/O pins, software, the analog comparator, and the

RTC.

• The Sensor Controller also includes a SPI–I2C digital interface.

• The analog modules can be connected to up to eight different GPIOs.

The peripherals in the Sensor Controller can also be controlled from the main application processor.

Table 9-1. GPIOs Connected to the Sensor Controller (1)

ANALOG

CAPABLE

7 × 7 RGZ

DIO NUMBER

5 × 5 RHB

DIO NUMBER

2.7 × 2.7 YFV

DIO NUMBER

4 × 4 RSM

DIO NUMBER

CC2640R2F

SWRS204C – DECEMBER 2016 – REVISED SEPTEMBER 2020

www.ti.com

Submit Document Feedback

Product Folder Links: CC2640R2F

CC2640R2FYFVT.B Scheda tecnica(PDF) 38 Page - Texas Instruments

CC2640R2FYFVT.B Scheda tecnica(HTML) 38 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74

Scheda tecnica Scarica

Link URL