Multichannel FSK/OOK CMOS wireless transceiver for Narrowband App w/Ch Spacings of 50 kHz or Higher


Product details


Device type Smart RF Transceiver RX current (lowest) (mA) 19.9 TX power (Max) (dBm) 10 Data rate (Max) (kbps) 153.6 Technology Sub-1 GHz Protocols Proprietary Rating Catalog Sensitivity (best) (dBm) -109 Flash (KB) 0 Frequency bands (MHz) 402-470, 804-960 open-in-new Find other Sub-1 GHz products

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VQFN (RSS) 32 49 mm² 7 x 7 open-in-new Find other Sub-1 GHz products


  • True Single-Chip UHF RF Transceiver
  • Frequency Range 402 MHz to 470 MHz and
    804 MHz to 930 MHz
  • High Sensitivity
    • Up to –112 dBm for 38.4 kHz Receiver Channel Filter Bandwidth
    • Up to –106 dBm for 102.4 kHz Receiver Channel Filter Bandwidth
  • Programmable Output Power
  • Low Current Consumption
    • RX: 19.9 mA
  • Low Supply Voltage
    • From 2.3 V to 3.6 V
  • Very Few External Components Required
  • Small Size
    • QFN 32 Package
  • Pb-Free Package
  • Digital RSSI and Carrier Sense Indicator
  • Data Rate Up to 153.6 kBaud
  • OOK, FSK, and GFSK Data Modulation
  • Integrated Bit Synchronizer
  • Image Rejection Mixer
  • Programmable Frequency
  • Automatic Frequency Control (AFC)
  • Suitable for Frequency Hopping Systems
  • Suited for Systems Targeting Compliance With
    EN 300 220 and FCC CFR47 Part 15
  • Easy-to-Use Software for Generating the CC1021 Configuration Data
  • Fully Compatible With CC1020 for Receiver Channel Filter Bandwidths of 38.4 kHz and Higher

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The CC1021 device is a true single-chip UHF transceiver designed for very low power and very low voltage wireless applications. The circuit is mainly intended for the ISM (Industrial, Scientific and Medical) and SRD (Short Range Device) frequency bands at 433 MHz, 868 MHz, and 915 MHz, but can easily be programmed for multichannel operation at other frequencies in the 402- to 470-MHz and 804- to 930-MHz range.

The CC1021 device is especially suited for narrowband systems with channel spacing of 50 kHz and higher complying with EN 300 220 and CC CFR47 part 15.

The CC1021 device main operating parameters can be programmed through a serial bus, thus making the CC1021 device a very flexible and easy to use transceiver.

In a typical system, the CC1021 device is used together with a microcontroller and a few external passive components.

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More Information

The current RUZ package used with CC1021 will be replaced by the RSS package to secure manufacturability and long term availability of CC1021, as described in PCN# 20141212001. Such changes are normal during the lifetime of a product and do not affect the availability or support of the CC1021 product. In a transition period defined in the PCN the existing package (RUZ) will be available alongside the drop-in replaceable (RSS) package. Note that when the CC1021RUZ-based products retire, new orderable part names need to be ordered as outlined in the PCN. This will be informed through the CC1021 product web page and the CC1021 datasheet accordingly when these changes occur.

Technical documentation

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Type Title Date
* Datasheet CC1021 Single-Chip Low-Power RF Transceiver for Narrowband Systems datasheet (Rev. F) Oct. 31, 2018
* Errata CC1021 Errata Notes Jan. 31, 2006
Application notes DN024 -- 868 MHz, 915 MHz and 955 MHz Monopole PCB Antenna (Rev. E) Feb. 22, 2013
Application notes DN035 -- Antenna Quick Guide (Rev. A) Feb. 12, 2013
Application notes AN098 - Layout Review Techniques for Low Power RF Designs (Rev. A) Aug. 02, 2012
Application notes DN023 -- 868 MHz, 915 MHz and 955 MHz Inverted F Antenna (Rev. C) Aug. 30, 2011
Application notes AN058 -- Antenna Selection Guide (Rev. B) Oct. 06, 2010
Application notes DN031 -- CC-Antenna-DK Documentation and Antenna Measurements Summary Aug. 26, 2010
More literature CC1021 Material content Jul. 16, 2007
Radiation & Reliability reports CC1021 Reliability Report Apr. 28, 2006
More literature CC1021 RoHS Confirmation Jan. 31, 2006

Design & development

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Design tools & simulation

TI 15.4 Stack Power Calculator
15.4-STACK-CALC — This tool is used to allow SimpleLink TI 15.4 Stack Software users to analyze system power profile for a sleepy network device. This calculator enables the user to assess the potential system battery life and determine how to optimize battery life through configuring system settings, stack (...)
  • Power calculator for TI devices using the SimpleLink 15.4 stack
SmartRF Studio
SMARTRFTM-STUDIO SmartRF™ Studio is a Windows application that can be used to evaluate and configure Low Power RF devices from Texas Instruments. The application helps designers of RF systems to easily evaluate the radio at an early stage in the design process. It is especially useful for generation of (...)
document-generic User guide
  • Link tests. Send and Receive packets between nodes.
  • Antenna and radiation tests. Set the radio in continuous wave TX and RX states.
  • A set of recommended/typical register settings for all devices.
  • Read and write individual RF registers.
  • Execute individual commands to control the radio.
  • Detailed (...)
Hardware design reviews for SimpleLink™ CC1xxx devices
SIMPLELINK-SUB1GHZ-DESIGN-REVIEWS To get started with the SimpleLink™ Sub-1GHz hardware design review process:
  • Step 1: Before requesting a review, it is important that to review the technical documentation and design & development resources available on the corresponding product page (see CC1xxx product page links below).
  • Step 2: Fill (...)

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