FiRa 2.0
Standards
Compliant with IEEE 802.15.4z, IEEE 802.15.4-2015 and FiRa 2.0.
CBU5000V210
Ultra-Wideband UWB SoC
The world’s first FiRa 2.0-certified UWB & BLE dual-mode SoC. A single chip integrates a 32-bit MCU, hardware security and a 1T3R RF architecture to deliver high-precision ranging, 3D Angle-of-Arrival and radar sensing for smartphones, consumer electronics, automotive and IoT.
CBU5000 Architecture
The whole chip shares a single 32 MHz crystal to cut BOM. A high-performance 32-bit MCU, a hardware security platform and rich functional modules (timers, UART, SPI, I2C) secure communications, while on-die voltage and temperature monitoring keep the chip stable. The 1T3R design integrates a TRSW so TX and RX0 share one antenna, and supports one TX with three RX. In the TX chain, data is encoded and sent to the TX front-end; in each RX chain, signal frames are captured and decoded from digitized RF samples, producing CIR and PDOA for ranging, Angle-of-Arrival (AOA) and radar sensing.
CPU Subsystem
High-performance 32-bit MCU with a hardware security platform, timers, UART, SPI, I2C and on-die voltage/temperature monitoring.
UWB RF Module
1T3R architecture with an integrated TRSW so TX and RX0 share one antenna; supports one TX and three RX.
UWB Digital Baseband
Digitizes and decodes RX signal frames into CIR, PoA and ToA, enabling ranging, AOA and radar.
BLE Module
Bluetooth functionality with an integrated BLE 5.0 PHY and BLE controller.
CBU5000 Package
Built in a 67-pin eWLB package measuring just 3.6 mm × 3.4 mm, the single chip integrates UWB, BLE and MCU — greatly simplifying peripheral design and board footprint.
- Package: 67-pin eWLB
- Dimensions: 3.6 mm × 3.4 mm
- RX1/RX2 sensitivity ~1.5 dB better than RX0 (no TRSW loss)
- Single shared 32 MHz crystal lowers BOM and footprint
CBU5000 Capabilities
6–9 GHz
Band & Channels
Supports the 6–9 GHz second band group — channels 5, 6, 8, 9, 10 — with a max packet length of 4095 bytes.
31.2 Mbps
Data Rates
Multiple data rates: 850 Kbps, 6.8 Mbps, 7.8 Mbps, 27.2 Mbps and 31.2 Mbps.
AES-128
Secure Ranging
Supports STS configuration 0/1/3 with integrated AES-128; hardware-based security architecture.
TWR·TDoA
Ranging Modes
SoC mode and standalone transceiver mode; Two-Way Ranging (TWR) and Time Difference of Arrival (TDOA).
1T3R
3D AOA
3D Angle-of-Arrival with one TX and three RX.
64 MHz
Host Interface
SPI command interface to the host CPU at up to 32 MHz; QSPI controller supports external Flash up to 1 MB at 64 MHz.
Single-chip
Low BOM
High integration translates into a lower bill of materials.
CBU5000 Key Highlights (1)
BLE-UWB Dual Mode
BLE-UWB dual-mode integrated design — market feedback has validated our product approach.
Rich Peripherals
12 GPIOs with 2×UART, SPI (Master/Slave), I2C (Master) and 10-bit ADC — flexible for diverse products.
Configurable 32-bit MCU
32-bit MCU runs at 16/32/64/128 MHz — switch between high performance and low power as needed.
Long Range
180 m at 6.8 Mbps and 460 m at 0.85 Mbps — ultra-wide coverage with no extra PA.
Precise Clock Compensation
Compensates clock error, refining frequency error from the ppm level down to the ppb level.
Simple Peripheral Design
Simple, easy-to-understand peripheral circuitry lets engineers integrate it into existing products fast.
CBU5000 Key Highlights (2)
Radar Mode
Sensitivity −103 dBm, ranging ±3 cm, dynamic range 40 dB. Provides presence, heartbeat and breathing APIs; antenna-array mode improves accuracy. Radar transmits and receives simultaneously, needing at least two antennas — where our 1T3R shines.
Configurable Sync Frame
Sync-frame length is configurable. Optimized for the mainstream “64”, it can also be set to “16” to cut power by 40% and shorten ranging time — a direct benefit of our digital baseband and true chip-level configurability.
Rich API
Exposes raw data such as CIR, first-path and strongest-path index, PDOA01/PDOA02/PDOA12, plus intuitive calibrated outputs like AOA.
TL;DR
CBU5000V210 at a glance
CBU5000V210 is the world's first FiRa 2.0-certified UWB & BLE dual-mode SoC, a single chip integrating a 32-bit MCU, hardware security and a 1T3R RF architecture — delivering centimeter-precision ranging (±1 cm), 3D AoA and radar sensing for smart locks, pointing remotes, UWB tags and spatial awareness.
- ±1 cmRanging precision
- 1T3R1T3R RF architecture
- FiRa 2.0World-first certification
- ±1°Angle precision
Authority: Chipsbank is a member of the FiRa Consortium and the CSA (Connectivity Standards Alliance, the body behind the Aliro standard); CBU5000V210 has passed FiRa 2.0 certification and completed Aliro Test Harness verification.
Ready to build with CBU5000V210?
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