CYW20737
Single-Chip Bluetooth Low Energy-Only
System-On-Chip with Support for Wireless Charging
The Cypress CYW20737 is an advanced Bluetooth low energy SoC that supports wireless charging profile, includes advanced security
features and introduces new software support for NFC pairing via a tag. The CYW20737 is designed to support the entire spectrum
of Bluetooth Smart use cases for the medical, home automation, accessory, sensor, Internet Of Things, and wearable market
segments.
The CYW20737 radio has been designed to provide low power, low cost, and robust communications for applications operating in the
globally available 2.4 GHz unlicensed Industrial, Scientific, and Medical (ISM) band.
The single-chip Bluetooth low energy SoC is a monolithic component implemented in a standard digital CMOS process and requires
minimal external components to make a fully compliant Bluetooth device. The CYW20737 is available in a 32-pin, 5 mm × 5 mm 32-
QFN package as well as BGA SIP. CYW20737 is supported in WICED SDK 2.x.
Cypress Part Numbering Scheme
Cypress is converting the acquired IoT part numbers from Cypress 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
BCM20737
CYW20737
BCM20737A1KML2G
CYW20737A1KML2G
Features
■ AirFuel wireless charging profile.
■ Broadcom Serial Communications interface (compatible with
Philips® I2C slaves)
■ Support for RSA encryption/decryption and key exchange
mechanisms (up to 4 kbit)
■ Programmable output power control
■ Integrated ARM® Cortex™-M3 based microprocessor core
■ Automation Profile
■ Support for X.509 certificate exchange
■ Support for NFC tag-based "tap-to-pair"
■ Support for Bluetooth Smart Based Audio via Apple LEA
Spec.
■ Support for secure OTA
■ On-chip power-on reset (POR)
■ Bluetooth low energy (BLE)-compliant
■ Infrared modulator
■ Support for EEPROM and serial flash interfaces
■ Integrated low-dropout regulator (LDO)
■ On-chip software controlled power management unit
■ Package type:
■ IR learning
■ Supports Adaptive Frequency Hopping
■ Excellent receiver sensitivity
■ 10-bit auxiliary ADC with nine analog channels
❐ 32-pin 32-QFN package (5 mm × 5 mm)
■ RoHS compliant
■ On-chip support for serial peripheral interface (master and
slave modes)
Applications
The following profiles are supported1 in ROM:
■ Battery status
■ Find me
■ Blood pressure monitor
■ Heart rate monitor
1.Full qualification and use of these profiles may require FW updates from Broadcom. Some of these profiles are under development/approval at the Bluetooth
SIG and conformity with the final approved version is pending. Contact your supplier for updates and the latest list of profiles.
Cypress Semiconductor Corporation
Document Number: 002-16365 Rev. *C
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198 Champion Court
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San Jose, CA 95134-1709
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408-943-2600
Revised July 5, 2017