What Problem This Class of Device Solves
Financial BLE ICs target wearable payment devices, POS terminals, UKey, and other financial peripherals. Beyond Bluetooth/wireless connectivity, they also need to hold sensitive data such as keys and account information on-chip, working with the terminal's overall security design to meet financial-grade data-security requirements. Selection needs to weigh both the connection protocol and whether on-chip storage and peripheral interfaces fit the specific financial application.
How to Read the Key Parameters
Bluetooth spec (BT Spec): the catalog's main line (the YC1021 series) is Bluetooth 3.0 BR + 5.0 BLE + 2.4G proprietary tri-mode. The catalog also has parts built on a pure 2.4GHz proprietary link (not Bluetooth) — check the target market's Bluetooth-certification requirements to decide whether a Bluetooth-protocol part is mandatory.
Co-packaged storage: catalog parts offer EEPROM + 1/2Mb Flash co-packaged options. Financial peripherals commonly need to store keys and account data on-chip, so verify that the storage media type and capacity fit the data-storage and endurance requirements.
Applications: catalog parts list coverage spanning transparent transmission, POS, OBU, and UKey financial/identity peripherals, as well as consumer use cases like mice, keyboards, and lighting control. The same chip family may target multiple terminal types, so check each specific part's application list against the target product.
Supply voltage range (VCC Range): catalog parts are rated 1.8V–5.5V, matching the lithium-battery/coin-cell supply range typical of wearable payment devices.
GPIO count: catalog parts offer 6–32 GPIOs; check this against the number of card-swipe, button, and indicator interfaces needed.
Three Steps to Select
- First confirm whether the target market requires standard Bluetooth certification, and use that to bound candidates between tri-mode Bluetooth parts and pure 2.4G proprietary-protocol parts.
- Check the applications list (POS/OBU/UKey, etc.) to confirm the target part is explicitly suited, rather than judging by Bluetooth spec alone.
- Verify co-packaged EEPROM/Flash capacity against data-storage needs, and confirm supply range and GPIO count fit the peripheral circuit design.
Common Pitfalls
- Judging security level purely from the "Bluetooth" label — Bluetooth protocol version and financial-grade data-security capability are separate matters; actual security capability should be confirmed from the part's datasheet and relevant certifications, not inferred from the protocol version.
- Reusing a part across sub-variants without checking application-list differences — the same family often includes distinct sub-variants (e.g. D/S suffixes); always verify the full datasheet parameters and application list for the exact part number rather than assuming the main series designation is enough.
- Treating co-packaged storage capacity as total system storage — EEPROM/Flash co-package capacity is chip-level; a system-level multi-application/multi-account storage design still needs to be evaluated against the overall terminal design.
To filter parts by specific parameter ranges, use the online selection tool on this site, or contact us for part-selection support.