User Manual

XR‐21A WIF
I module
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Copyright©2019  ShenzhenJiXinInteligenceCo.,LtdAllRightsReserved 
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1. ProductOverview
XR‐21AWiFimodulewasdevelopedforawiderangeofIoTapplications,Itscor eprocessorXR808integrates
theARMCortex‐M4F32‐bitmicrocontrollerinasmallerpackage,supportingthemasterclockfrequencyup
to 160MHz; Integrates high‐performance WLAN system with Wi‐Fi MAC/BB/RF/PA/LNA units; Integrates
advancedpowermanagementunitsfo
rultr
a‐lowpowerconsumptionwithmultiplesleepmodesandfast
wake‐up mechanisms; Integrates hardware encryption engine to supports
AES/DES/3DES/SHA‐1/ MD5/
CRC/SHA256/TRNG
;Integrateslargememoryandrichperipherals.
XR‐21A WiFi module supports standardIEEE802.11b/g/n protocol, supports RTOS, with a complete
TCP/IPprotocolstack,Userscanusethemoduletoaddnetworkingcapabilitiestoexistingdevices,orcanuse
itasamasterdesignwirelessnetworkproduct,XR808canbestarteddirectlyfr
omexternalflashmemory,
theon‐chiphigh‐speedbuffermemoryhelpsimprovesystemperformanceandreduceRAMrequirements.