文件编号Document No.ESP-07-2-007-03文件名称Document Name产品/工艺变更通知Product/Process Change Notice(PCN)文件版本Document Version1.3保存期限Retention Period5 年5 yearswww.espressif.com Page1/3变更 ESP32 系列高温模组 40MHz 晶振的串联电阻规格Change the series resistor specification of the 40MHz crystal for ESP32 (-40℃~105℃) modulesPCN 编号PCN No.PCN-2021-023提出日期Issue Date of PCN2021/9/10变更日期Proposed Date of Change2021/9/24首次出货日期Proposed Date of FirstShipment2021/9/24PCN 类型 / PCN Category客户需要批准/Customer Approval Required客户通知/Customer Notification1.影响产品名称/Affected Product NameESP32 (-40℃~105℃)series modules:ESP32-SOLO-1；ESP32-WROOM-32D；ESP32-WROOM-32U；ESP32-WROOM-32E；ESP32-WROOM-32UE；ESP32-MINI-1；ESP32-MINI-1U2.变更原因/Reason for Change为进一步扩大ESP32模组的应用范围，更改ESP32 (-40℃~105℃)模组上晶振的串联电阻规格，适应更多复杂高温场景。The series resistor specification of the ESP32 (-40℃~105℃) module external crystal is changed in order tobroaden the module application realm and ensure stable operating under more complicated and hightemperature circumstances.3. 变更描述/Description of Change更改段落 1 中受影响模组中外部晶振的串联电阻阻值，具体请参见以下变更对比。The series resistor value of the module external crystal is going to be changed. You may refer to changecomparison chapter followed. www.espressif.com Page2/34.变更对比/Change Comparison产品名称/Product Name变更前/Before Change变更后/After ChangeESP32-SOLO-1；ESP32-WROOM-32D；ESP32-WROOM-32U；ESP32-WROOM-32E；ESP32-WROOM-32UE；ESP32-MINI-1；ESP32-MINI-1UR2= 100ΩR2= 0Ω5. 变更影响/Impact of Change1) 品质和性能/ Quality & Performance:No impact.2) 交期/Delivery:No impact.3) 生产料号/Material Part Numbers (MPN):No impact.6.变更前后产品处理/How to Deal with ProductsFIFO.7.相关报告/Report(s) Attached:Related ECN No.ECN-2021-019 www.espressif.com Page3/3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 andother valuable information, to subscribed customers only. If you wish to stay updated on our products andservices, please subscribe here.客户响应要求Customer Response Requirements需客户批准的变更/ Change Requiring Customer Approval：a)客户须在乐鑫发出PCN后的30天内告知乐鑫已收到PCN。如客户未在接收到PCN后的30天内告知已收到，则视为客户收到变更。Customers are requested to acknowledge receipt of the PCN within 30 calendar days from the date ofissue of the PCN. Customers would be considered as notified 30 calendar days after issue of the PCN if noacknowledgement is received.b) 自发布 PCN 之日起 90 天内，客户没有任何其他反馈，则表示客户接受该 PCN。The lack of any additional responses from customers within 90 calendar days from date of issue of thePCN constitutes acceptance of the proposed changes.客户通知/ Customer Notification：a)客户需在乐鑫发出PCN后14天内通知乐鑫收到该PCN。 如客户未在接收到PCN 14日反馈乐鑫，则视为客户确认该 PCN。Customers are requested to acknowledge receipt of the PCN within 14 calendar days from the date ofissue of the PCN. Customers would be considered as having acknowledged the PCN if no response isreceived after 14 calendar days.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:PCN评审结果/PCN Review Result：批准/确认 Accepted/Acknowledged不批准/Rejected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: