Wiznet WizFi320 User manual
WizFi320 User Manual
© Copyright 2021 WIZnet Co., Ltd. All rights reserved. 1
WizFi320 User Manual
(Version 0.1)
FCC ID : 2AKKW-WIZFI320
© 2021 WIZnet Co., Ltd. All Rights Reserved.
For more information, please visit our website at http://www.wiznet.io/
WizFi320 User Manual
© Copyright 2021 WIZnet Co., Ltd. All rights reserved. 2
Document Revision History
Version Date Revision Description
0.1 2021/06/10 Initial draft
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 Pattern.......................................................................14
5.
testing Guide line ....................................................................................................................15
5.1 Peripheral Circuit Reference Design...................................................................15
5.2 Wi-Fi AT Commands ...........................................................................................16
WizFi320 User Manual
© Copyright 2021 WIZnet Co., Ltd. All rights reserved. 4
1.
Overview
WizFi320 is a powerful, generic Wi-Fi+BT+BLE MCU module that targets a wide
variety of
applications ranging from low-power sensor networks to the most
demanding tasks.
At the core of this module is the ESP32-DOWD-V3 chip. The chip embedded is
designed to be scalable and adaptive. There are two CPU cores that can be
individually controlled, and the CPU clock frequency is adjustable from 80 MHz to
240 MHz. The user may also power off the CPU and make use of the low-power co-
processor to constantly monitor the peripherals for changes or crossing of
thresholds.
The integration of Bluetooth, Bluetooth LE and Wi-Fi ensures that a wide range
of applications can be targeted and that the module is all-around: using Wi-Fi
allows a large physical range and direct connection to the Internet through a
Wi-Fi router, while using Bluetooth allows the user to conveniently connect to
the phone or broadcast low energy beacons for its detection. The sleep current
of the ESP32 chip is less than 5 µA, making it suitable for battery powered and
wearable electronics applications. The module supports a data rate of up to
150Mbps, and 20 dBm output power at the antenna to ensure the widest physical
range. As such the module does offer industry- leading specifications and the
best performance for electronic integration, range, power consumption, and
connectivity.
The operating system chosen for ESP32 is freeRTOS with LwIP; TLS 1.2 with
hardware acceleration is built in as well. Secure (encrypted) over the air (OTA)
upgrade is also supported, so that users can upgrade their products even after
their release, at minimum cost and effort.
Table 1 provides the specifications of WizFi320.
Table 1: WizFi320 Specifications
Categories ltems Specications
Certification
RF certification FCC
Wi-Fi certification Wi-Fi Alliance
Bluetooth certification BQB
Green certification RoHS/REACH
Test Reliablity HTOL/HTSL/uHAST/TCT/ESD
Wi-Fi
Protocols
802.11 b/g/n (802.11n up to 150 Mbps)
A-MPDU and A-MSDU aggregation and 0.4μs guard
interval support
Frequency range 2.4 GHz ~2.5 GHZ
Bluetooth
Protocols Bluetooth v4.2 BR/EDR and BLE specification
Radio
NZIF receiver with -94 dBm sensitivity
Class-1, class-2 and class-3 transmitter
WizFi320 User Manual
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AFH
Audio CVSD and SBC
Hardware
Module interfaces UART, SPI, SDIO, I²C, I²S, LED PWM, GPIO, ADC,
DAC
On-chip sensor Hall sensor
Integrated crystal 40 MHz crystal
Integrated SPI flash 4MB
Operating voltage/Power supply 3.0 V~3.6V
Operating current Average: 80 mA
Minimum current delivered by power
ul
500 mA
Recommended operating temperature
rn
-40℃~ +85℃
Package size (16±0.10) mm x (24±0.10) mm x (3±0.10) mm
Moisture sensitivity level (MSL) Level 3
WizFi320 User Manual
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2.
Pin Definitions
2.1 Pin Layout
Figure 1: WizFi320 Pin Layout (Top View)
WizFi320 User Manual
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2.2 Pin Description
WizFi320 has 38 pins. See pin definitions in Table 2.
Table 2: Pin Definitions
Name No. Type Function
EN 1 I Module-enable signal. Active high.
IO27 2 I/O GPIO27, ADC2_CH7, TOUCH7, RTC_GPIO17, EMAC_RX_DV
IO0 3 I/O PIO0, ADC2_CH1, TOUCH1, RTC_GPIO11, CLK_OUT1, EMAC_TX_CLK
IO25 4 I/O GPIO25, DAC_1, ADC2_CH8, RTC_GPIO6, EMAC_RXD0
IO26 5 I/O GPIO26, DAC_2, ADC2_CH9, RTC_GPIO7, EMAC_RXD1
IO5 6 I/O GPIO5, VSPICS0, HS1_DATA6, EMAC_RX_CLK
IO19 7 I/O GPIO35, ADC1_CH7, RTC_GPIO5
VCC 8 P Power supply
IO15 9 I/O GPIO15, ADC2_CH3, TOUCH3, MTDO, HSPICS0, RTC_GPIO13, HS2_CMD,
SD_CMD, EMAC_RXD3
IO12 10 I/O GPIO12, ADC2_CH5, TOUCH5, RTC_GPIO15, MTDI, HSPIQ, HS2_DATA2,
SD_DATA2, EMAC_TXD3
IO2 11 I/O GPIO2, ADC2_CH2, TOUCH2, RTC_GPIO12, HSPIWP, HS2_DATA0, SD_DATA0
IO4 12 I/O GPIO4, ADC2_CH0, TOUCH0, RTC_GPIO10, HSPIHD, HS2_DATA1, SD_DATA1,
EMAC_TX_ER
IO13 13 I/O GPIO13, ADC2_CH4, TOUCH4, RTC_GPIO14, MTCK, HSPID, HS2_DATA3,
SD_DATA3, EMAC_RX_ER
IO14 14 I/O GPIO14, ADC2_CH6, TOUCH6, RTC_GPIO16, MTMS, HSPICLK, HS2_CLK, SD_CLK,
EMAC_TXD2
GND 15 P Ground
IO22 16 I/O GPIO22, VSPIWP, U0RTS, EMAC_TXD1
TXD0 17 I/O GPIO17, HS1_DATA5, U2TXD, EMAC_CLK_OUT_180
RXD0 18 I/O GPIO16, HS1_DATA4, U2RXD, EMAC_CLK_OUT
IO18 19 I/O GPIO18, VSPICLK, HS1_DATA7
IO23 20 I/O GPIO23, VSPID, HS1_STROBE
RXD1 21 I/O GPIO1, U0TXD, CLK_OUT3, EMAC_RXD2
TXD1 22 I/O GPIO3, U0RXD, CLK_OUT2
WizFi320 User Manual
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3.
Functional Description
This chapter describes the modules and functions integrated in WizFi320.
3.1 CPU and Internal Memory
ESP32-DOWD-V3 contains two low-power Xtensa® 32-bit LX6 microprocessors. The
internal memory includes:
•
448 KB of ROM for booting and core functions.
•
520 KB of on-chip SRAM for data and instructions.
•
8 KB of SRAM in RTC, which is called RTC FAST Memory and can be used for data
storage; it is
accessed by the main CPU during RTC Boot from the Deep-sleep mode
•
8 KB of SRAM in RTC, which is called RTC SLOW Memory and can be accessed by
the co- processor during the Deep-sleep mode
•
1 Kbit of eFuse: 256 bits are used for the system (MAC address and chip
configuration) and the remaining m768 bits are reserved for customer applications,
including flash-encryption and chip- ID.
3.2 External Flash
WizFi320 integrates a 4 MB SPI flash, which is connected to GPIO6, GPIO7, GPIO8,
GPIO9, GPIO10 and GPIO11 of ESP32.
3.3 Crystal Oscillators
The module uses a 40-MHz crystal oscillator.
3.4 RTC and Low-Power Management
With the use of advanced power-management technologies, ESP32 can switch between
different power modes. For details on
ESP32’s
power consumption in different
power modes, please refer to section
”RTC
and Low-Power
Management”.
WizFi320 User Manual
© Copyright 2021 WIZnet Co., Ltd. All rights reserved. 9
4.
Electrical Characteristics
4.1 Absolute Maximum Ratings
Stresses beyond the absolute maximum ratings listed in Table 3 below may cause
permanent damage to the device. These are stress ratings only, and do not refer
to the functional operation of the device that should follow the recommended
operating conditions.
Table 3: Absolute Maximum Ratings
1.
The module worked properly after a 24-hour test in ambient temperature at
25 °C, and the IOs in three domains (VDD3P3_RTC, VDD3P3_CPU, VDD_SDIO) output
high logic level to ground. Please note that pins occupied by flash and/or
PSRAM in the VDD_SDIO power domain were excluded from the test.
2.
Please see Appendix IO_MUX of ESP32 Datasheet for IO
’
s power domain.
4.2 Recommended Operating Conditions
Table 4: Recommended Operating Conditions
4.3 DC Characteristics (3.3 V, 25 °C)
Table 5: DC Characteristics (3.3 V,
25 °C)
Symbol Parameter Min Max Unit
VDD33 Power supply voltage -0.3 3.6 V
I
Cumulative IO output current - 1200 mA
I
Storage temperature -40 82 °C
Symbol Parameter Min Typical Max Unit
VDD33 Power supply voltage 2.3 3.3 3.6 V
Current delivered by external power supply 0.5 - - A
T
Operating temperature -40 - 85 °C
WizFi320 User Manual
© Copyright 2021 WIZnet Co., Ltd. All rights reserved. 10
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