User's Manual

WizFi320 User Manual
© Copyright 2021 WIZnet Co., Ltd. All rights reserved. 3
Contents
1. Overview ................................................................................................................................... 4
2. Pin Definitions ........................................................................................................................... 6
2.1 Pin Layout .................................................................................................... 6
2.2 Pin Description ............................................................................................. 7
3. Functional Description .............................................................................................................. 8
3.1 CPU and Internal Memory ........................................................................... 8
3.2 External Flash ............................................................................................... 8
3.3 Crystal Oscillators ........................................................................................ 8
3.4 RTC and Low-Power Management .............................................................. 8
4. Electrical Characteristics ............................................................................................................ 9
4.1 Absolute Maximum Ratings ......................................................................... 9
4.2 Recommended Operating Conditions .......................................................... 9
4.3 DC Characteristics (3.3 V, 25 °C) .................................................................. 9
4.4 Wi-Fi Radio .................................................................................................11
4.5 BLE Radio ...................................................................................................12
4.6 Reflow Profile ......................................................................................................13
4.7 Recommended PCB Land Patter n .......................................................................14
5. testing Guide line .................................................................................................................... 15
5.1 Peripheral Circuit Reference Design ...................................................................15
5.2 Wi-Fi AT Commands ...........................................................................................16