Single-Chip 5G WiFi IEEE 802.11ac 2×2 MAC/
Baseband/Radio with Integrated Bluetooth 4.1,
FM Receiver, and Wireless Charging
The Cypress CYW4356 is a complete dual-band (2.4 GHz and 5 GHz) 5G WiFi 2 × 2 MIMO MAC/PHY/Radio System-on-a-Chip. This
Wi-Fi single-chip device provides a high level of integration with dual-stream IEEE 802.11ac MAC/baseband/radio, Bluetooth 4.1, and
FM radio receiver. Additionally, it supports wireless charging. In IEEE 802.11ac mode, the WLAN operation supports rates of MCS0–
MCS9 (up to 256 QAM) in 20 MHz, 40 MHz, and 80 MHz channels for data rates up to 867 Mbps. In addition, all the rates specified
in IEEE 802.11a/b/g/n are supported. Included on-chip are 2.4 GHz and 5 GHz transmit power amplifiers and receive low noise
For the WLAN section, several alternative host interface options are included: an SDIO v3.0 interface that can operate in 4b or 1b
modes, and a PCIe v3.0 compliant interface running at Gen1 speeds. For the Bluetooth section, host interface options of a high-speed
4-wire UART and USB 2.0 full-speed (12 Mbps) are provided.
The CYW4356 uses advanced design techniques and process technology to reduce active and idle power, and includes an embedded
power management unit that simplifies the system power topology.
In addition, the CYW4356 implements highly sophisticated enhanced collaborative coexistence hardware mechanisms and algorithms
that ensure that WLAN and Bluetooth collaboration is optimized for maximum performance. Coexistence support for external radios
(such as LTE cellular and GPS) is provided via an external interface. As a result, enhanced overall quality for simultaneous voice,
video, and data transmission on a handheld system is achieved.
This data sheet provides details on the functional, operational, and electrical characteristics for the Cypress CYW4356. It is intended
for hardware design, application, and OEM engineers.
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
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 002-15053 Rev. *D
• San Jose, CA 95134-1709 • 408-943-2600
Revised Monday, November 14, 2016