Changed products listed in Para 1 are compatible w 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 Page1/5ESP32-C3 系列产品的芯片版本由版本 3 升级为版本 4Upgrade Chip Revision of ESP32-C3 Series Products from Chip Revision 3 to Chip Revision 4PCN编号PCN No.PCN20220101提出日期Issue Date of PCN2022/03/30变更日期Proposed Date of Change2022/04/30首次出货日期Proposed Date of FirstShipment2022/06/15PCN 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 Name1)芯片产品信息/ Chip Products Information：ESP32-C3，ESP32-C3FN4，ESP32-C3FH4，ESP8685H2，ESP8685H4ESP32-C3FN4AZ，ESP32-C3FH4AZ2)模组产品信息/ Module Products Information：Product NameProduct MPNESP8685-WROOM-01ESP8685-WROOM-01-H2ESP8685-WROOM-01-H4ESP8685-WROOM-03ESP8685-WROOM-03-H2ESP8685-WROOM-03-N2ESP8685-WROOM-03-H4ESP8685-WROOM-04ESP8685-WROOM-04-H2ESP8685-WROOM-04-H4ESP8685-WROOM-05ESP8685-WROOM-05-H2ESP8685-WROOM-05-H4ESP8685-WROOM-06ESP8685-WROOM-06-H2ESP8685-WROOM-06-H4ESP8685-WROOM-07ESP8685-WROOM-07-H2ESP8685-WROOM-07-H4ESP32-C3-WROOM-02ESP32-C3-WROOM-02-N4ESP32-C3-WROOM-02-H4ESP32-C3-WROOM-02UESP32-C3-WROOM-02U-N4ESP32-C3-WROOM-02U-H4ESP32-C3-MINI-1ESP32-C3-MINI-1-N4ESP32-C3-MINI-1-H4ESP32-C3-MINI-1UESP32-C3-MINI-1U-N4ESP32-C3-MINI-1U-H4ESP32-C3F5V1ESP32-C3F5V1ESP32-C3-WIZ2012ESP32-C3-WIZ2012 www.espressif.com Page2/53)开发板产品信息/ Development Board Products Information:Product NameProduct MPNESP32-C3-DevKitM-1ESP32-C3-DevKitM-1ESP32-C3-DevKitM-1UESP32-C3-DevKitC-02ESP32-C3-DevKitC-02ESP32-C3-DevKitC-02UESP32-C3-namiESP32-C3-MINI-1-N4-NAMIESP32-C3-AWS-Expresslink-DevKitESP32-C3-AWS-Expresslink-DevKitESP32-C3-WIZ2016ESP32-C3-WIZ2016ESP32-C3-Adaptor-ANVESP32-C3-Adaptor-ANV-H42.变更原因/ Reason for Change为提升ESP32-C3系列芯片的生产效率，对ESP32-C3系列芯片进行优化。段落1中列出的模组和开发板产品的主芯片为ESP32-C3系列芯片，因此相应地发生变更。Internal optimization of ESP32-C3 series chip to improve the production capacity of ESP32-C3 serieschip products. Modules and development board products listed in Para 1 are based on ESP32-C3 seriesof chips, and thus will change accordingly.3.变更描述/ Description of Change段落1中列出的产品为ESP32-C3系列产品，其所含的主芯片的芯片版本由版本3升级为版本4。Upgrade the main chip revision of ESP32-C3 series products listed in Para 1 from chip revision 3 to chiprevision 4.4. 变更对比/ Change Comparison请见附录 I：变更对比。Please refer to Appendix I: Change comparison.识别方式/ Identification Method:芯片产品通过 eFuse 及产品丝印。Chip products: Identified by eFuse bits and chip marking.模组产品通过丝印中的产品规格标识位识别。Module products: Identified by module marking.5. 变更影响/ Impact of Change1) 品质和性能/ Quality & Performance: 无影响/ No impact2) 交期/ Delivery: 无影响/ No impact3) 生产料号/ Material Part Numbers (MPN):客户可以继续使用原有的芯片产品名称下单；Customers can continue using the existing chip product name to place orders.段落 1 中列出的模组及开发板产品的 MPN 不变更，客户可以继续使用原有的模组及开发板产品 MPN 进行下单。There is no change to the MPN of the affected Espressif modules & development board products listed inPara 1. Customers can continue to use existing MPN to place orders.4) 认证/ Certification: 无影响/ No impact www.espressif.com Page3/55)软件/ IDF：当前的乐鑫IDF版本兼容段落1列出的变更后的产品，客户可继续使用现有的软件版本进行变更后产品的生产。Changed products listed in Para 1 are compatible with the current version of ESP-IDF. Customers can stilluse the current version.6. 变更前后产品处理/ How to Deal with ProductsFIFO7. 相关报告/ Report(s) Attached:Related ECN No.ECN-2022-001射频性能验证/ RF Performance Verification: Pass www.espressif.com Page4/5Appendix I 变更对比/ Change ComparisonNo.项目/ Item变更前/ Before Change变更后/ After Change1ESP32-C3 SeriesProductChip Revision342ESP32-C3 SeriesProductChip eFuse（BLK1 B14[4:2]）343ESP32-C3 SeriesChip ProductChip MarkingxDxxxxxxxExxxxxx4ESP32-C3 SeriesModule ProductModule MPNNo change5ESP32-C3 SeriesModule ProductModule MarkingXXXXXXM4XXXX www.espressif.com Page5/5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: