BCM4390DKWBGT Datasheet, PDF (11/78 Pages) Cypress Semiconductor – WICED™ Wi-Fi IEEE 802.11 b/g/n SoC with Embedded Application Processor

BCM4390 Advance Data Sheet
Section 1: Overview
Overview
Overview
The Broadcom® BCM4390 is a single-chip device that provides the highest level of integration for an embedded
system-on-a-chip with integrated IEEE 802.11 b/g/n MAC/baseband/radio and a separate ARM-Cortex M3
applications processor. It provides a small form-factor solution with minimal external components to drive
down cost for mass volumes and allows for an embedded system with flexibility in size, form, and function.
Comprehensive power management circuitry and software ensure the system can meet the needs of highly
embedded systems that require minimal power consumption and reliable operation.
Figure shows the interconnect of all the major physical blocks in the BCM4390 and their associated external
interfaces, which are described in greater detail in the following sections.
Figure 2: Block Diagram and IO
GPIO_A[0:11]
SPI (Flash)
GPIO_B[0:11]
2-Wire UART4
2x4-Wire UART1/2
2-Wire UART3
I²S
I²C
SPI Master/Slave
JTAG
WAKE
RESET_N
BCM4390
ARM
Cortex-M3
48 MHz
448 KB
RAM
WLAN
Core
802.11n
1x1
2.4 GHz
RF Tx
RF Rx
Tx/Rx Switch Control
Antenna Diversity
3V3
GND
Features
The BCM4390 supports the following features:
• ARM Cortex-M3 clocked at 48 MHz
• 448 KB of SRAM available for the applications processor
• Two high-speed 4-wire UART interfaces with operation up to 4 Mbps
• Two low-speed 2-wire UART interfaces
• One generic SPI master/slave interface with operation up to 24 MHz
• One SPI master interface for serial flash
BROADCOM ®
February 5, 2014 • 4390-DS103-R
WICED Wi-Fi IEEE 802.11 SoC w/Embedded App Processor
Page 10
BROADCOM CONFIDENTIAL