Users Manual

RF-WM-10AFB1
www.szrfstar.com V1.0 - Jan., 2020
Shenzhen RF-star Technology Co., Ltd. Page 2 of 25
3. All modules with PCB / Chip antenna and IPEX connector are dispatched with PCB / Chip antenna only by default. If
the IPEX connector is needed, pls check with me before quotation.
1 Device Overview
1.1 Description
RF-WM-11AFB1 is a PCB module based on Realtek Wi-Fi SoC RTL8711AF of the CortexTM-M3 core at 83 MHz. This
module has on-chip 512 KB RAM and 1 MB flash, a pin-out of peripherals of SDIO, SPI, UART, I2C, I2S, and GPIOs. It
has integrated a 40 MHz crystal, an onboard PCB antenna, and an IPEX/ U.FL connector for connecting to an external
antenna. It supports 2.4 GHz 802.11 b/g/n at 20 MHz channel bandwidth with 75 Mbps maximum data rate. The module
comes with a pre-programmed serial interface data communication protocol and an AT commands set to minimizes
users’ effort to establish the data link to their existing MCUs or processors. It supports STA, AP, and STA + AP
concurrent modes, advanced security features include Wi-Fi WEP, WPA, WPA2, and WPS2 with MD5, SHA-1,
SHA2-256, DES, 3DES, and AES security engines.
1.2 Key Features
 General
- CMOS MAC, baseband PHY, and RF in a
single chip for 802.11b/g/n compatible WLAN
- Complete 802.11n solution for 2.4 GHz band
- 72.2 Mbps receive PHY rate and 72.2 Mbps
transmit PHY rate using 20 MHz bandwidth
- 150 Mbps receive PHY rate and 150 Mbps
transmit PHY rate using 40 MHz bandwidth
- Compatible with 802.11n specification
- Backward compatible with 802.11b/g devices
while operating in 802.11n mode
 Standards supported
- 802.11b/g/n compatible WLAN
- 802.11e QoS Enhancement (WMM)
- 802.11i (WPA, WPA2). Open, shared key,
and pair-wise key authentication services
- Wi-Fi WPS support
- Wi-Fi direct support
- Lightweight TCP/IP protocol
 WLAN MAC features
- Frame aggregation for increased MAC
efficiency (A-MSDU, A-MPDU)
- Low latency immediate High-Throughput
Block Acknowledgement (HT-BA)
- Long NAV for media reservation with CF-End
for NAV release
- PHY-level spoofing to enhance legacy
compatibility
- Power saving mechanism
 WLAN PHY features
- 802.11n OFDM
- One Transmit and One Receive path (1T1R)
- 20 MHz and 40 MHz bandwidth transmission
- Short guard interval (400 ns)
- DSSS with DBPSK and DQPSK, CCK
modulation with a long and short preamble
- OFDM with BPSK, QPSK, 16QAM, and
640QAM modulation. Convolutional coding
rate: 1/2, 2/3, 3/4, and 5/6
- Maximum data rate 54 Mbps in 802.11g and
150 Mbps in 802.11n
- Fast receiver Automation Gain Control (AGC)