文件编号Document No. ESP-00-2-007-03 文件名称Document Name 产品/工艺变更通知 Product/Process Change Notice (PCN) 文件版本Document Version 1.1 保存期限Retention Period 3 年 3 years www.espressif.com Page 1 / 4!ESP-WROOM-02/ESP32-WROOM-32/ESP32-WROVER 屏蔽盖镭射增加二维码 Adding a QR code to the shielding case of ESP-WROOM-02/ESP32-WROOM-32/ESP32-WROVER PCN 编号 PCN No. PCN-03-2019120301 提出日期Issue Date of PCN 2019-12-02 产品名称Product Name ESP-WROOM-02 ESP32-WROOM-32 ESP32-WROVER 变更日期Proposed Date of Change 2019-12-05 封装类型/尺寸 Package Type/Size Module 首次出货日期Proposed Date of First Shipment 2020-02-20 客户批准/Customer Consent： 需要批准/Approval Required 通知，无需批准/Notification, Approval Not Required 变更等级/Classification of Change: 主要变更/Major 轻微变更/Minor 变更原因/Reason for Change: 1) 提高模组生产追溯性 Provide enhanced traceability of module production.2) 满足越来越多客户对模组二维码的需求 Meet the increasing requirement for QR codes from more and morecustomers. 变更描述/Description of Change: 屏蔽盖标签：变更前无二维码，变更后增加二维码The shielding cases of the affected modules do not contain QR code before change, and contain QR code after change. Before change After change www.espressif.com Page 2 / 4! 变更影响/Impact of Change: 增加模组追溯性，给有需求的客户提供 MAC 地址 The traceability for modules is enhanced. Information of customized MAC addresses can be included in the QR code (provided on request). 变更识别方式/ Change Identification Method: 变更前：屏蔽盖无二维码 Before change: no QR code on the shielding case of the modules; 变更后：屏蔽盖增加二维码，二维码内容：Fab code(2 位)+Date code(4 位)+MAC address（12 位） After change: QR codes are added to the shielding case of the modules. The information contained in the QR code consists of Fab code (2 bits) + Date code (4 bits) + MAC address (12 bits). 变更前后产品处理/:How to Deal with Products: FIFO 相关报告/Report(s) Attached: £Related ECN No.: £Reliability Report or Plan: www.espressif.com Page 3 / 4!£Function Test Report: £RoHS/HF Test Report: £Other Reports (Pls specify): 邮件订阅 Espressif Email Notifications 乐鑫为注册用户提供电子邮件通知服务，用户可通过乐鑫订阅系统接收技术文档更新、新闻通讯、PCN 等邮件通知。 Espressif sends email notifications of technical documentation changes, along with newsletters, PCNs and other valuable information, to subscribed customers only. If you wish to stay updated on our products and services, please subscribe here. 客户响应要求 Customer Response Requirements 客户须按照如下要求给予 Espressif PCN 反馈： Customers are required to respond to Espressif, according to the following guidelines, and confirm receipt of the PCN: 主要变更/For Major Changes： a) 客户须在乐鑫发出 PCN 后的 30 天内告知已收到 PCN。 Customers should confirm receipt of the PCN within 30 calendar days from the date Espressif sends it to them. b) 如客户未在接收到 PCN 后的 30 天内告知已收到，则视为客户接受变更。 If customers do not confirm receipt of the PCN within 30 calendar days, they will be regarded as having accepted the proposed changes. c) 客户告知确认收到 PCN 后，如未在 90 天内反馈其他要求，则视为客户接受变更。 After the customers confirm receipt of the PCN, the lack of any additional responses on their part within 90 calendar days constitutes acceptance of the proposed changes. 轻微变更/For Minor Changes： a) 如客户未在接收到 PCN 后的 7 天内告知已收到，则视为客户接受变更。 If customers do not confirm receipt of the PCN within 7 calendar days, they will be regarded as having accepted the proposed changes. 请反馈至 pcn@espressif.com。 Please send feedback to pcn@espressif.com. 客户批准/确认信息 Customer Approval/Acknowledgement and Remarks 客户公司全称： Customer’s Company Name: www.espressif.com Page 4 / 4! PCN 评审结果/PCN Review Result： £批准/Approval £不批准/Disapproval £需要分析/Further Analysis Required 客户意见/Comment: 公司代表人姓名 Representative’s Name: 公司代表人职责 Representative’s Job Title: 公司代表人签名 Representative’s Signature: 日期 Date: