BCM43907 Datasheet, PDF (2/128 Pages) Cypress Semiconductor – WICED™ IEEE 802.11 a/b/g/n SoC with an Embedded Applications Processor

Preliminary Data Sheet
BCM43907
WICED^™ IEEE 802.11 a/b/g/n SoC with an
Embedded Applications Processor
GENERAL DESCRIPTION
The Broadcom^® Ltd. BCM43907 embedded wireless
system-on-a-chip (SoC) is uniquely suited for
Internet-of-Things applications. It supports all rates
specified in the IEEE 802.11 a/b/g/n
specifications.The device includes an ARM Cortex-
based applications processor, a single stream IEEE
802.11n MAC/baseband/radio, a dual-band 5 GHz
and 2.4 GHz transmit power amplifier (PA), and a
receive low-noise amplifier (LNA). It also supports
optional antenna diversity for improved RF
performance in difficult environments.
The BCM43907 is an optimized SoC targeting
embedded Internet-of-Things applications in the
industrial and medical sensor, home appliance, and
embedded audio markets. Using advanced design
techniques and process technology to reduce active
and idle power, the device is designed for embedded
applications that require minimal power consumption
and a compact size.
The device includes a PMU for simplifying system
power topology and allows for direct operation from a
battery while maximizing battery life.
FEATURES
Application Processor Features
• ARM Cortex-R4 32-bit RISC processor.
• 1 MB of on-chip SRAM for code and data.
• An on-chip cryptography core
• 640 KB of ROM containing WICED SDK
components such as RTOS and TCP/IP stack.
• 17 GPIOs supported.
• Q-SPI serial flash interface to support up to 40
Mbps of peak transfer.
• Support for UART (3), SPI or BSC master (2),
BSC-only (2), and I²S (2) interfaces. (Broadcom
Serial Control (BSC) is an I²C-compatible
interface.)
• Dedicated fractional PLL for audio clock (MCLK)
generation.
• USB 2.0 host and device modes.
• SDIO 3.0 host and device modes.
FEATURES
Key IEEE 801.11x Features
• IEEE 802.11n compliant.
• Single-stream spatial multiplexing up to
150 Mbps.
• Supports 20/40 MHz channels with optional SGI.
• Full IEEE 802.11 a/b/g legacy compatibility with
enhanced performance.
• TX and RX low-density parity check (LDPC)
support for improved range and power efficiency.
• On-chip power and low-noise amplifiers.
• An internal fractional nPLL allows support for a
wide range of reference clock frequencies.
• Integrated ARM Cortex-R4 processor with tightly
coupled memory for complete WLAN subsystem
functionality, minimizing the need to wake up the
applications processor for standard WLAN
functions (to further minimize power consumption
while maintaining the ability to upgrade to future
features in the field).
• Software architecture supported by standard
WICED SDK allows easy migration from existing
discrete MCU designs and to future devices.
• Security support:
– WPA and WPA2 (Personal) support for
powerful encryption and authentication.
– AES and TKIP in hardware for faster data
encryption and IEEE 802.11i compatibility.
– Reference WLAN subsystem provides
Cisco Compatible Extensions (CCX, CCX 2.0,
CCX 3.0, CCX 4.0, and CCX 5.0).
– Wi-Fi Protected Setup and Wi-Fi Easy-Setup
• Worldwide regulatory support: Global products
supported with worldwide design approval.
General Features
• Supports battery voltage range from 3.0V to 4.8V
with an internal switching regulator.
• Programmable dynamic power management.
• 6 Kb OTP memory for storing board parameters.
• 316-bump WLCSP
(4.583 mm × 5.533mm, 0.2mm pitch).
Corporate Headquarters: San Jose, CA
43907-DS104-R
March 12, 2016