Data Sheet
Table Of Contents
- This document provides users with the technical specifications for WT32C3-S6.
- Please visit Wireless-Tag’s official website to download the latest version of the document.
- Please go to the document revision history page to view the revisions of the document.
- Disclaimer and copyright notice
- Information in this paper, including URL references, is subject to change without prior notice.
- This document is provided “as is” with no warranties whatsoever, including any warranty of merchantability, non-infringement, fitness for any particular purpose, or any warranty otherwise arising out of any proposal, specification or sample. All liabi...
- All trade names, trademarks and registered trademarks mentioned in this document are property of their respective owners, and are hereby acknowledged.
- Copyright © 2020 Wireless-Tag Technology Co., Ltd. All rights reserved.
- Statement
- 1 Overview
- WT32C3-S6 WiFi module is a low-power, cost-effective embedded wireless network control module, which is an ideal choice for smart grid, building automation, security system, smart home, telemedicine and other IoT applications.
- The module’s core processor ESP32-C3 integrates an industry-leading 32-bit RISC-V single-core microprocessor with a maximum clock speed of 160 MHz in a small-sized package. It comes with an on-board PCB antenna.
- The module supports for the standard IEEE802.11 b/g/n protocol and Bluetooth Low Energy 5.0 (Bluetooth LE): Bluetooth 5, Bluetooth mesh. The module can be used to help Bluetooth pairing and network connection to existing devices, or build an independe...
- 2 Features
- 3 Hardware Specifications
- 3.1 Block Diagram
- 3.3 Strapping Pins
- ESP32-C3 series has three strapping pins.
- GPIO2
- GPIO8
- GPIO9
- Software can read the strapping values of these pins in “GPIO_STRAPPING” register.
- During the chip’s system reset(power-on-reset, RTC watchdog reset, brownout reset, analog super watchdog reset, crystal clock glitch detection reset), the latches of the strapping pins sample the voltage level as strapping bits of “0” or “1”, and hold...
- By default, GPIO9 is connected to the internal pull-up resistor. If GPIO9 is not connected or connected to an external high-impedance circuit, the latched bit value will be “1”.
- To change the strapping bit values, you can apply the external pull-down/pull-up resistances, or use the
- host MCU’s GPIOs to control the voltage level of these pins when powering on ESP32-C3 family. After reset, the strapping pins work as normal-function pins.
- Refer to Table 2 for a detailed boot-mode configuration of the strapping pins.
- Figure 3 shows the setup and hold times for the strapping pin before and after the CHIP_EN signal goes high.
- 4 Electrical Characteristics
- 5 Application Note
- 6 Product Trial
- Sales email：sales@wireless-tag.com
- Technical support email：technical@wireless-tag.com
- Federal Communication Commission Statement (FCC, U.S.)
- IMPORTANT NOTES
- Co-location warning:
- OEM integration instructions:
- Validity of using the module certification:
- End product labeling:
- Information that must be placed in the end user manual:
- Integration instructions for host product manufactures according to KDB 996369 D03 OEM Manual v01
- 2.2 List of applicable FCC rules
- 2.3 Specific operational use conditions
- WiFi Specification：
- BLE Specification：
- 2.4 Limited module procedures
- 2.5 Trace antenna designs
- 2.6 RF exposure considerations
- 2.7 Antennas
- 2.9 Information on test modes and additional testing requirements
- BLE
- WIFI
- 2.10 Additional testing, Part 15 Subpart B disclaimer
- Manufacturer's Name: Wireless-Tag Technology Co., Ltd Sample Description: WIFI Module
- Trade Mark: wireless-tag Model number: WT32C3-S6
- This device was tested for operations. To comply with RF exposure requirements, a minimum separation distance of 20cm must be maintained between the user’s body and the charger, including the antenna. Third-party belt-clips, holsters, and similar acce...
- This device in compliance with the essential requirements and other relevant provisions of Directive 2014/53/EU. All essential radio test suites have been carried out. This restriction will be applied to all Member States of European Union.
- 1. The device complies with RF specifications when the device used at 20cm form your body Declaration of Conformity
- Hereby, Wireless-Tag Technology Co., Ltd declares that the product type WT32C3-S6 is in compliance with Directives 2014/53/EU.
- www.wireless-tag.com
- RF specification:
Wireless-Tag Technology Co., Ltd.
V1.0.2
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Copyright ©2020 Wireless-Tag Technology Co., Ltd. All Rights Reserved.
The module can be used for mobile or applications with a maximum 2 dBi antenna. The host
manufacturer installing this module into their product must ensure that the final composit product
complies with the FCC requirements by a technical assessment or evaluation to the FCC rules,
including the transmitter operaition. The host manufacturer has to be aware not to provide information
to the end user regarding how to install or remove this RF module in the user's manual of the end
product which integrates this module. The end user manual shall include all required regulatory
information/warning as show in this manual.
2.4
Limited module procedures
Not applicable.
2.5
Trace antenna designs
Not applicable. The module has its own antenna, and doesn’t need a host’s printed board
microstrip trace antenna etc.
2.6
RF exposure considerations
The module must be installed in the host equipment such that at least 20cm is maintained between the
antenna and users’ body; and if RF exposure statement or module layout is changed, then the host
product manufacturer required to take responsibility of the module through a change in FCC ID or new
application. The FCC ID of the module cannot be used on the final product. In these circumstances,
the host manufacturer will be responsible for re-evaluating the end product (including the transmitter)
and obtaining a separate FCC authorization
2.7
Antennas
Antenna Specification are as follows:
Type: PCB Antenna
Gain: 2 dBi
This device is intended only for host manufacturers under the following conditions:
The transmitter module may not be co-located with any other transmitter or antenna;
The module shall be only used with the internal antenna(s) that has been originally tested and certified
with this module. The antenna must be either permanently attached or employ a ‘unique’ antenna
coupler.
As long as the conditions above are met, further transmitter test will not be required. However, the host
manufacturer is still responsible for testing their end-product for any additional compliance
requirements required with this module installed (for example, digital device emissions, PC peripheral
requirements, etc.)