1. Introduction
1.1 Overview
F23BDSM33-W2 is a small size and low profile WiFi + BT Combo module, The siize is 12mm*16mm. It
can be easily manufactured on SMT process and highly suitable for tablet PC, ultra book, mobile
device and consumer products. It provides SDIO interface for WiFi to connect with host processor and
high speed UART interface for BT. It also has a PCM interface for audio data transmission with direct
link to external audio codec via BT controller. The WiFi throughput can go up to 150Mbps in theory by
using 1x1 802.11n b/g/n MIMO technology and Bluetooth can support BT2.1+EDR/BT3.0 and BT4.0.
F23BDSM33-W2 uses Realtek RTL8723BS. It is a highly integrated 802.11b/g/n 1T1R WLAN, an
integrated Bluetooth 2.1/3.0/4.0 module. It combines a WLAN MAC, a 1T1R capable WLAN baseband,
BT protocol Stack(LM, LL, and LE), BT baseband, modem, and WLAN/BT RF in the module. The
NFH23B01 provides a complete solution for a high throughput performance integrated wireless LAN
and Bluetooth controller.

1.2 Product Features
General
12mm*16mm
802.11b/g/n 1T1R WLAN and Bluetooth module
Host Interface
Complies with SDIO 1.1/2.0/3.0 for WLAN with clock rate up to 100MHz (DDR50)
Complies with HS-UART with configurable baud rate for Bluetooth
WLAN Features
CMOS MAC, Baseband PHY, and RF in a single chip for 802.11b/g/n compatible WLAN
Complete 802.11n solution for 2.4GHz band
One Transmit and one Receive path (1T1R)
Short Guard Interval (400ns)
Maximum data rate 54Mbps in 802.11g; and 150Mbps in 802.11n
802.11i (WPA, WPA2). Open, shared key, and pair-wise key authentication services
BT Features
Compatible with Bluetooth v2.1+EDR and v3.0+HS Systems
Supports Bluetooth 4.0 Low Energy(BLE)
Integrated MCU to execute Bluetooth protocol stack
PCM interface for audio data transmission via Bluetooth controller
Supports AFH to dynamically detect channel quality to improve transmission quality