Renesas introduced the DA14533 on March 25, 2025, as the first automotive-qualified device in its SmartBond Tiny Bluetooth LE SoC family. It combines a Bluetooth LE radio and a small microcontroller in a single package for embedded designs; it is a component, not a finished Bluetooth accessory or a guarantee that a complete vehicle system is qualified.
What the DA14533 is
The DA14533 integrates a 2.4 GHz Bluetooth LE transceiver with a 16 MHz, 32-bit Arm Cortex-M0+ microcontroller. Renesas lists 64 KB of retainable RAM, 160 KB of ROM and 12 KB of one-time-programmable (OTP) memory. The chip can run an application on its own or act as a data pump for a host processor. Its radio, baseband and qualified Bluetooth LE stack are specified against Bluetooth Core 5.3.
For security and connectivity, the datasheet specifies AES-128 hardware encryption, a software-based true random number generator and support for up to three Bluetooth LE connections. The stack includes L2CAP, Security Manager (SM), ATT, GATT and GAP layers. These capabilities describe the chip and its qualified stack; they do not mean every feature associated with Bluetooth 5.3 is implemented.
Automotive qualification and physical design
Renesas specifies AEC-Q100 Grade 2 qualification and an operating temperature range of -40°C to +105°C. Those are component-level qualifications and ratings. They do not certify a customer’s module, ECU, vehicle system or application; those must be evaluated and qualified as appropriate for their intended use.
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The single-chip package is a 22-pin wettable-flanks FCQFN measuring 3.5 × 3.5 × 0.55 mm, with 0.5 mm pitch. Renesas lists nine GPIOs, two UARTs, SPI, I2C and a three-channel 10-bit ADC. These resources may suit compact embedded designs, but whether they are sufficient depends on the system’s interfaces and software needs.
Radio capabilities and Bluetooth feature limits
Renesas specifies programmable transmit output from -19 dBm to +4 dBm and receiver sensitivity of -94.5 dBm. The product page marks the following features as unsupported: LE 2 Mbps, Coded PHY, extended advertising, periodic advertising, Angle of Arrival (AoA), Angle of Departure (AoD) and Bluetooth Mesh. Core 5.3 qualification should therefore not be read as a promise of support for every optional Bluetooth feature.
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Power figures depend on measurement conditions
The figures below come from different Renesas documents and should not be treated as interchangeable. The datasheet is revision 3.3, dated May 12, 2026; its specified radio-current values include the stated supply, output-power and DC-DC conditions.
| Source and date | Reported figure | Conditions or qualification |
|---|---|---|
| Renesas datasheet, Rev. 3.3, May 12, 2026 | TX system current: 3.9 mA; RX system current: 2.5 mA | DC-DC enabled, VBAT_HIGH = 3 V and 0 dBm transmit output. |
| Renesas datasheet, Rev. 3.3, May 12, 2026 | Clock-less hibernation current: less than 550 nA | Clock-less hibernation mode. |
| Renesas product page, accessed September 30, 2026 | Receiver: 3.5 mA; transmitter: 2.1 mA; sleep: 1.7 μA | The sleep figure is listed with all 64 KB of RAM retained; the cited page figures are not supplied with the datasheet’s matching measurement conditions. |
| Renesas launch announcement, March 25, 2025 | Transmission: 3.1 mA; reception: 2.5 mA; hibernation: 500 nA | Launch-release figures; do not assume they use the same modes and measurement conditions as later datasheet values. |
For design comparisons, use values measured under matching transmit power, supply voltage, radio mode and memory-retention conditions. A low hibernation figure alone does not predict average product battery life: duty cycle, connection behavior, peripherals and the surrounding design also matter.
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What Renesas identifies as use cases
Renesas names tire-pressure monitoring systems (TPMS), passive entry and passive start (PEPS), onboard diagnostics (OBD) and battery management systems (BMS) as application areas. Its product page also presents wireless EV BMS, humanoid BMS and continuous glucose monitor examples. These are manufacturer-identified applications, not evidence that every implementation is suitable or that the chip has been adopted in a particular product.
Launch claims and what they establish
In its March 25, 2025 announcement, Renesas described the DA14533 as the first automotive-qualified device in its Bluetooth LE SoC family and claimed an engineering bill of materials with six external components. The actual external-component count depends on the implementation, so the claim is not a fixed requirement for every design. The release also says the chip uses one crystal oscillator for active and sleep modes.
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The announcement reported more than 100 million SmartBond Tiny family units shipped to date, in a statement attributed to Chandana Pairla, VP of Renesas’ Connectivity Solutions Division. That historical figure applies to the family, not to DA14533 shipments. The same announcement quoted Pairla: “This new automotive-grade device will enable a new class of Bluetooth LE applications that demand high power efficiency, a small footprint and broader temperature tolerance for next-generation battery-powered automotive and industrial systems.”
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How to evaluate it for a design
- Qualification: Confirm the component’s AEC-Q100 Grade 2 status and temperature range meet the project requirements, then assess qualification for the full module and system separately.
- Bluetooth features: Check required PHYs, advertising modes, direction finding or mesh support against the explicitly unsupported features, rather than relying on the Core 5.3 label.
- Power: Compare datasheet measurements only when radio mode, transmit output, voltage, DC-DC setting and RAM retention match the intended operating profile.
- Integration: Check the 22-pin package, nine GPIOs, serial interfaces, ADC channels, memory and connection limit against the design’s hardware and software demands.
- Implementation support: Renesas getting-started documentation mentions a DA14533-00FXDB-P developer daughterboard. Confirm current documentation and availability with Renesas or a distributor before planning a build.
Renesas’ product page provides a comparison with the DA14535 on package and GPIO count, but those two attributes alone are not enough to select between parts. A meaningful comparison should also align qualification, supported Bluetooth features, measurement conditions, memory, peripherals and integration needs.
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Availability and sourcing
The DA14533 is a named Renesas component with a documented package. Mouser has published a distributor announcement, but that does not establish current stock, authorized status in every region or availability from any particular seller. Check Renesas and regional distributors for current sourcing information.
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
