SWRS257 March   2022 CC2651P3

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Functional Block Diagram
  5. 5 Revision History
  6. 6 Device Comparison
  7. 7 Pin Configuration and Functions
    1. 7.1 Pin Diagram – RGZ Package (Top View)
    2. 7.2 Signal Descriptions – RGZ Package
    3. 7.3 Pin Diagram – RKP Package (Top View)
    4. 7.4 Signal Descriptions – RKP Package
    5. 7.5 Connections for Unused Pins and Modules
  8. 8 Specifications
    1. 8.1  Absolute Maximum Ratings
    2. 8.2  ESD Ratings
    3. 8.3  Recommended Operating Conditions
    4. 8.4  Power Supply and Modules
    5. 8.5  Power Consumption - Power Modes
    6. 8.6  Power Consumption - Radio Modes
    7. 8.7  Nonvolatile (Flash) Memory Characteristics
    8. 8.8  Thermal Resistance Characteristics
    9. 8.9  RF Frequency Bands
    10. 8.10 Bluetooth Low Energy - Receive (RX)
    11. 8.11 Bluetooth Low Energy - Transmit (TX)
    12. 8.12 Zigbee - IEEE 802.15.4-2006 2.4 GHz (OQPSK DSSS1:8, 250 kbps) - RX
    13. 8.13 Zigbee - IEEE 802.15.4-2006 2.4 GHz (OQPSK DSSS1:8, 250 kbps) - TX
    14. 8.14 Timing and Switching Characteristics
      1. 8.14.1 Reset Timing
      2. 8.14.2 Wakeup Timing
      3. 8.14.3 Clock Specifications
        1. 8.14.3.1 48 MHz Crystal Oscillator (XOSC_HF)
        2. 8.14.3.2 48 MHz RC Oscillator (RCOSC_HF)
        3. 8.14.3.3 32.768 kHz Crystal Oscillator (XOSC_LF)
        4. 8.14.3.4 32 kHz RC Oscillator (RCOSC_LF)
      4. 8.14.4 Synchronous Serial Interface (SSI) Characteristics
        1. 8.14.4.1 Synchronous Serial Interface (SSI) Characteristics
        2.       37
      5. 8.14.5 UART
        1. 8.14.5.1 UART Characteristics
    15. 8.15 Peripheral Characteristics
      1. 8.15.1 ADC
        1. 8.15.1.1 Analog-to-Digital Converter (ADC) Characteristics
      2. 8.15.2 DAC
        1. 8.15.2.1 Digital-to-Analog Converter (DAC) Characteristics
      3. 8.15.3 Temperature and Battery Monitor
        1. 8.15.3.1 Temperature Sensor
        2. 8.15.3.2 Battery Monitor
      4. 8.15.4 Comparator
        1. 8.15.4.1 Continuous Time Comparator
      5. 8.15.5 GPIO
        1. 8.15.5.1 GPIO DC Characteristics
    16. 8.16 Typical Characteristics
      1. 8.16.1 MCU Current
      2. 8.16.2 RX Current
      3. 8.16.3 TX Current
      4. 8.16.4 RX Performance
      5. 8.16.5 TX Performance
      6. 8.16.6 ADC Performance
  9. 9 Detailed Description
    1. 9.1  Overview
    2. 9.2  System CPU
    3. 9.3  Radio (RF Core)
      1. 9.3.1 Bluetooth 5.2 Low Energy
      2. 9.3.2 802.15.4 (Zigbee and 6LoWPAN)
    4. 9.4  Memory
    5. 9.5  Cryptography
    6. 9.6  Timers
    7. 9.7  Serial Peripherals and I/O
    8. 9.8  Battery and Temperature Monitor
    9. 9.9  µDMA
    10. 9.10 Debug
    11. 9.11 Power Management
    12. 9.12 Clock Systems
    13. 9.13 Network Processor
  10. 10Application, Implementation, and Layout
    1. 10.1 Reference Designs
  11. 11Device and Documentation Support
    1. 11.1 Device Nomenclature
    2. 11.2 Tools and Software
      1. 11.2.1 SimpleLink™ Microcontroller Platform
    3. 11.3 Documentation Support
    4. 11.4 Support Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

8.14.3.4 32 kHz RC Oscillator (RCOSC_LF)

Measured on a Texas Instruments reference design with Tc = 25 °C, VDDS = 3.0 V, unless otherwise noted.
MIN TYP MAX UNIT
Calibrated frequency 32.8 kHz
Calibrated RTC variation(1) Calibrated periodically against XOSC_HF(2) ±600(3) ppm
Temperature coefficient.  50 ppm/°C
(1) When using RCOSC_LF as source for the low frequency system clock (SCLK_LF), the accuracy of the SCLK_LF-derived Real Time Clock (RTC) can be improved by measuring RCOSC_LF relative to XOSC_HF and compensating for the RTC tick speed. This functionality is available through the TI-provided Power driver.
(2) TI driver software calibrates the RTC every time XOSC_HF is enabled. 
(3) Some device's variation can exceed 1000 ppm. Further calibration will not improve variation.