Single-Chip Bluetooth Transceiver and
The Cypress CYW20705 is a monolithic, single-chip, Bluetooth 4.1 compliant, stand-alone baseband processor with an integrated
2.4 GHz transceiver. Manufactured using the industry's most advanced 65 nm CMOS low-power process, the CYW20705 employs
the highest level of integration, eliminating all critical external components, and thereby minimizing the device’s footprint and costs
associated with the implementation of Bluetooth solutions.
The CYW20705 is the optimal solution for voice and data applications that require a Bluetooth SIG standard Host Controller Interface
(HCI) via USB, UART H4 or H5, and PCM audio interface support. The CYW20705 radio transceiver’s enhanced radio performance
meets the most stringent industrial temperature application requirements for compact integration into mobile handset and portable
devices. The CYW20705 is fully compatible with all standard TCXO frequencies and provides full radio compatibility, enabling it to
operate simultaneously with GPS and cellular radios.
Cypress Part Numbering Scheme
Cypress is converting the acquired IoT part numbers from Broadcom to the Cypress part numbering scheme. Due to this conversion,
there is no change in form, fit, or function as a result of offering the device with Cypress part number marking. The table provides
Cypress ordering part number that matches an existing IoT part number.
Table 1. Mapping Table for Part Number between Broadcom and Cypress
Broadcom Part Number
Cypress Part Number
Acronyms and Abbreviations
In most cases, acronyms and abbreviations are defined on first use.
For a comprehensive list of acronyms and other terms used in Cypress documents, go to:
■ Bluetooth 4.1 + EDR compliant
■ Class 1 capable with built-in PA
■ Programmable output power control meets Class 1, Class 2,
or Class 3 requirements
■ Use supply voltages up to 5.5V
■ Supports Cypress SmartAudio™, wide-band speech, SBC
codec, and packet loss concealment.
■ Fractional-N synthesizer supports frequency references from
12 MHz to 52 MHz
■ Automatic frequency detection for standard crystal and TCXO
values when an external 32.768 kHz reference clock is
■ Ultra-low power consumption
■ Supports serial flash interfaces
■ Available in a 50-ball FPBGA package.
■ ARM7TDMI-S™–based microprocessor with integrated ROM
■ Supports mobile and PC applications without external memory
■ A USB hub
■ Desktop and laptop personal computers
■ Computer peripheral devices (PCMCIA cards, CF cards, and USB dongles)
■ Personal digital assistants
■ Automotive telematic systems
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 002-14867 Rev. *F
• San Jose, CA 95134-1709 • 408-943-2600
Revised Thursday, November 9, 2017