Low Power Video Door Bell Embedded SDIO WiFi Module Hi1131S 2.4G SDIO WLAN
The highly integrated 2.4GHz WLAN IEEE 802.11 b/g/n MAC/Baseband/Radio and provides wireless communication solutions for intelligent terminals such as IPC, Smart WiFi Doorbell, DVR, STB, etc.
Why 3131A-S
Operate at ISM frequency bands (2.4GHz)
Low power dissipation
High transmitting power
High receiving sensitivity
support for single space streaming,
short protection interval (GI) 400ns
20MHz and 40MHz broadband
Specification
Model No:3131A-S
Main Chipset: Hi1131S
WiFi Standard: IEEE802.11b/g/n
Operating Frequency: 2.412~2.472GHz
Host Interface: SDIO 2.0
Data Rate: 150Mbps
Antenna: External Antenna
Dimension: L x W x H: 12 x 12 x1.9 (typical) mm
Operating Temperature: -30°C to 70°C
OS Suppoted: LiteOS
Low Power Dissipation Reference Design

Normal Power Dissipation Reference Design

Design Attention
1. GPIO1 is the interrupt signal of SDIO, It must be connected, If unconnected
throughput will be decrease.
2. PMU_PWRON is enable pin of the module. It must be high before power on.
3. Wake up must be connected, non-power-saving applications also need to connect.