󳽳󱝾󶴹󱿠DocumentNo.ESP-07-2-007-03󳽳󱝾󱿽󶌇DocumentName󱜂󲄘/󳉉󷐭󱾮󴇠󸶲󵾝Product/ProcessChangeNotice (PCN)󳽳󱝾󵗽󴉆DocumentVersion1.4󱣣󲵙󴈮󹢔RetentionPeriod5 󳌤5years www.espressif.com Page 1 / 9!󱙺󹘺 ESP32-C2󽘘ESP8684󽘙󶥚󱳊󱜂󲄘󱻏󶳊UpgradeofESP32-C2(ESP8684)SeriesProductsPCN 󶴹󱿠PCNNo.PCN20250101󳱠󱲡󴀩󴈮IssueDateofPCN2025/01/24󱾮󴇠󴀩󴈮ProposedDateofChange2025/03/24󹲌󸚇󱾮󴇠󲀀󱜂󲄘󹺘󴤤󱲡󸢸󴀩󴈮ProposedDateofFirstShipmentAfterChange2025/04/24PCN 󶡌󲖸 /PCNCategoryR 󲷱󳧋󹧞󸉔󳩁󱱆/CustomerApprovalRequired £󲷱󳧋󸶲󵾝/CustomerNotification 1. 󳔈󲄨󱜂󲄘/AffectedProducts󱾭󳔈󲄨󱜂󲄘󱹌󳫮 ESP32-C2󽘘ESP8684󽘙󶥚󱳊󷒠󵗺󴝘󶳧󳐴封󴋄󽘜󱯉󱠅󲖸󱿠󴸂󱻡󲤖󱘕󾗜The affected products include the ESP32-C2 (ESP8684) series chips, modules, and developmentboards.Thespecificmodellistisasfollows: 1󽘙 󷒠󵗺󱜂󲄘/ChipProducts󱾮󴇠󱴙󸚈󸢾󱝠󵿇/ OrderingCodeBeforeChange 󱾮󴇠󲀀󸚈󸢾󱝠󵿇/ OrderingCodeAfterChange 󱾮󴇠󹲁󵸂/ ChangeItemESP8684H2ESP8684H2XChiprevisionfromv1.2tov2.0ESP8684H4ESP8684H4XChiprevisionfromv1.2tov2.0+In-packageflashupdate2󽘙 󴝘󶳧󱜂󲄘/ModuleProductsModuleProductName OrderingCode BeforeChangeOrderingCode AfterChangeChiponBoardBeforeChangeChiponBoardAfterChangeChangeDetailESP8684-WROOM-01CESP8684-WROOM-01C-H2ESP8684-WROOM-01C-H2XESP8684H2ESP8684H2XChiprevisionfromv1.2tov2.0ESP8684-WROOM-01CESP8684-WROOM-01C-H4ESP8684-WROOM-01C-H4XESP8684H4ESP8684H4XChiprevisionfromv1.2tov2.0+In-packageflashupdateESP8684-WROOM-02CESP8684-WROOM-02C-N2ESP8684-WROOM-02C-H2XESP8684H2ESP8684H2XChiprevisionfromv1.2tov2.0ESP8684-WROOM-02CESP8684-WROOM-02C-N4ESP8684-WROOM-02C-H4XESP8684H4ESP8684H4XChiprevisionfromv1.2tov2.0+In-packageflashupdateESP8684-WROOM-02CESP8684-WROOM-02C-H2ESP8684-WROOM-02C-H2XESP8684H2ESP8684H2XChiprevisionfromv1.2tov2.0ESP8684-WROOM-02CESP8684-WROOM-02C-H4ESP8684-WROOM-02C-H4XESP8684H4ESP8684H4XChiprevisionfromv1.2tov2.0+In-packageflashupdateESP8684-WROOM-02UCESP8684-WROOM-02UC-N2ESP8684-WROOM-02UC-H2XESP8684H2ESP8684H2XChiprevisionfromv1.2tov2.0 www.espressif.com  Page2 /9ESP8684-WROOM-02UCESP8684-WROOM-02UC-N4ESP8684-WROOM-02UC-H4XESP8684H4ESP8684H4XChiprevisionfromv1.2tov2.0+In-packageflashupdateESP8684-WROOM-02UCESP8684-WROOM-02UC-H2ESP8684-WROOM-02UC-H2XESP8684H2ESP8684H2XChiprevisionfromv1.2tov2.0ESP8684-WROOM-02UCESP8684-WROOM-02UC-H4ESP8684-WROOM-02UC-H4XESP8684H4ESP8684H4XChiprevisionfromv1.2tov2.0+In-packageflashupdateESP8684-WROOM-03ESP8684-WROOM-03-H2ESP8684-WROOM-03-H2XESP8684H2ESP8684H2XChiprevisionfromv1.2tov2.0ESP8684-WROOM-03ESP8684-WROOM-03-H4ESP8684-WROOM-03-H4XESP8684H4ESP8684H4XChiprevisionfromv1.2tov2.0+In-packageflashupdateESP8684-WROOM-04CESP8684-WROOM-04C-H2ESP8684-WROOM-04C-H2XESP8684H2ESP8684H2XChiprevisionfromv1.2tov2.0ESP8684-WROOM-04CESP8684-WROOM-04C-H4ESP8684-WROOM-04C-H4XESP8684H4ESP8684H4XChiprevisionfromv1.2tov2.0+In-packageflashupdateESP8684-WROOM-05ESP8684-WROOM-05-H2ESP8684-WROOM-05-H2XESP8684H2ESP8684H2XChiprevisionfromv1.2tov2.0ESP8684-WROOM-05ESP8684-WROOM-05-H4ESP8684-WROOM-05-H4XESP8684H4ESP8684H4XChiprevisionfromv1.2tov2.0+In-packageflashupdateESP8684-WROOM-06CESP8684-WROOM-06C-H2ESP8684-WROOM-06C-H2XESP8684H2ESP8684H2XChiprevisionfromv1.2tov2.0ESP8684-WROOM-06CESP8684-WROOM-06C-H4ESP8684-WROOM-06C-H4XESP8684H4ESP8684H4XChiprevisionfromv1.2tov2.0+In-packageflashupdateESP8684-WROOM-07ESP8684-WROOM-07-H2ESP8684-WROOM-07-H2XESP8684H2ESP8684H2XChiprevisionfromv1.2tov2.0ESP8684-WROOM-07ESP8684-WROOM-07-H4ESP8684-WROOM-07-H4XESP8684H4ESP8684H4XChiprevisionfromv1.2tov2.0+In-packageflashupdateESP8684-MINI-1ESP8684-MINI-1-H2ESP8684-MINI-1-H2XESP8684H2ESP8684H2XChiprevisionfromv1.2tov2.0ESP8684-MINI-1ESP8684-MINI-1-H4ESP8684-MINI-1-H4XESP8684H4ESP8684H4XChiprevisionfromv1.2tov2.0+In-packageflashupdateESP8684-MINI-1UESP8684-MINI-1U-H2ESP8684-MINI-1U-H2XESP8684H2ESP8684H2XChiprevisionfromv1.2tov2.0ESP8684-MINI-1UESP8684-MINI-1U-H4ESP8684-MINI-1U-H4XESP8684H4ESP8684H4XChiprevisionfromv1.2tov2.0+In-packageflashupdate3󽘙 󳐴封󴋄󱜂󲄘/DevelopmentBoardProductsDevelopmentBoardProductName OrderingCode BeforeChangeOrderingCode AfterChangeChiponBoardBeforeChangeChiponBoardAfterChangeChangeDetailESP8684-DevKitC-02ESP8684-DevKitC-02C-N4ESP8684-DevKitC-02C-N4XESP8684H4ESP8684H4XChiprevisionfromv1.2tov2.0+In-packageflashupdateESP8684-DevKitM-1ESP8684-DevKitM-1-H4ESP8684-DevKitM-1-H4XESP8684H4ESP8684H4XChiprevisionfromv1.2tov2.0+In-packageflashupdateESP8684-DevKitM-1ESP8684-DevKitM-1U-H4ESP8684-DevKitM-1U-H4XESP8684H4ESP8684H4XChiprevisionfromv1.2tov2.0+In-packageflashupdate 2. 󱾮󴇠󱽓󲒵/ReasonforChange1󽘙 󱙚󲝿󱶩󲷱󳧋󱿔󵫞󵵙 SRAM 󲃅 flash 󶐀󹠣󽘜󲺧 ESP32-C2 󷒠󵗺󸴔󸀅󱛌󱻏󶳊2󽘙 󱙺󹘺󳉛󲔩 ESP32-C2󽘘ESP8684󽘙󶥚󱳊󷒠󵗺󳌣󱿖󱘔模󳦎󱛌󱘈󴥕󳾾󲝿󲺴󸃔󱯜 Flash 󵵙󺀪󸚧󴳖󸚻󽘜󴳖󸚻󶳶󴋴󴂲󶆺󶕸󱿷󸉔󴭁󱮷尽󱰠󲷢󲔩 ESP8684H4 󱾛 ESP8684H4X 󷒠󵗺󵵙󵫑󱜂务󱡋󵫞󸛋 Flash󽘜󱝥 󳱠 󺂿 󱡹 󳍟 󶍹 󲷢 󳘮 3󽘙 󵫬󱛖󱻏󶳊󱴙󲀀󵵙󱜂󲄘󲔩󸱒󱝾󳿑󹪸󱘗󱯐󲸣󽘜󱙚󱺴󱲵󱾮󴇠󱴙󲀀󵵙󱜂󲄘󽘜󱮷尽󴇠󳾾󱛌󸚈󸢾去󵿇1󽘙 To increase the available SRAM and flash memory for customers, the ESP32-C2 chip has beenupgradedfromv1.2tov2.0. www.espressif.com  Page3 /92󽘙 Espressif has completedthequalification testingof a newlyintroduced in-package flash on theESP32-C2(ESP8684) series chip, withresults meeting the requiredstandards. The company hasdecidedtousethisflashintheproductionoftheESP8684H4andESP8684H4Xchipstoenhancesupplystability.3󽘙 Since chip revision v2.0 and previous chip revisions are not software-compatible, Espressif hasupdatedtheorderingcodestodistinguishbetweenthem.3. 󱾮󴇠󳱞󸵄/DescriptionofChange1) 󴩐󷟦 1 务 ESP32-C2 󶥚󱳊󱜂󲄘󵵙󷒠󵗺󶁞󱝾󹄥󲽊󲼜󱾮󴇠󽘜󷒠󵗺󵗽󴉆󲺽󵫬 v1.2 󱻏󶳊󱙚 v2.0󽘜󴇳󳾾󵵙ESP32-C2 󷒠󵗺󵗽󴉆 v2.0 󱘙󱻏󶳊󲀀󵵙 ESP-IDF 󳴉󹀢󱡋󵫞󽘜󱿔󱝥󹲥󲡋󷛇󳕅󶳉 20KBSRAM 󶐀󹠣󲃅󶳉 100KBflash 󶐀󹠣󱡹󹲁󵸂󳐴封󱡋󵫞󽘘󱝥󲷫󹢃󳍟󵫞󱙚󱱆󽘙󴩐󷟦 1 务󱳊󱲡󵵙󴝘󶳧󲃅󳐴封󴋄󱜂󲄘务󱡋󵫞󵵙󱙛󷒠󵗺󱙚 ESP32-C2 󶥚󱳊󷒠󵗺󽘜󲒵󴦝󱚓󸴔󸀅󵸒󳍟󱾮󴇠2) 󴩐󷟦 1 务󵵙 ESP8684H4 󲃅 ESP8684H4X 󷒠󵗺󱜂󲄘󲝿󱶩󱘈󴥕󲺴󸃔󱯜 flash 󱙚󲠫󸶆󵙀󳾒󽘜󲒵 󴦝 󴩐 󷟦  1 务󲺧󳍟󵵙󴝘󶳧󲃅󳐴封󴋄󱜂󲄘󱚓󸴔󸀅󵸒󳍟󱾮󴇠1󽘙 ThemodificationtotheESP32-C2serieschipdescribedinPara1involvesahardwaremetallayerchange,withthechipversionbeingupgradedfromv1.2tov2.0.ThelatestESP32-C2v2.0chip,whenusedwiththeupdatedESP-IDF,providesapproximately20KBofadditionalSRAMandaround100KBofextraflashmemoryforprojectdevelopment(actualgainsmayvarydependingonthespecificapplication).SincethemodulesanddevelopmentboardslistedinPara1usetheESP32-C2serieschip,theyhavealsobeenupdatedaccordingly.2󽘙 TheESP8684H4andESP8684H4XchipmentionedinPara1hasintroducedanewin-packageflashasanalternativesourcetoimprovesupplystability.Asaresult,thecorrespondingmodulesanddevelopmentboardslistedinPara1havealsobeenupdatedaccordingly.4. 󱾮󴇠󲺧󴪒/ChangeComparison󸛝󸊼󹢂󳓗 I󾗜󱾮󴇠󲺧󴪒PleaserefertoAppendixI:ChangeComparison.󸚬󱳧󳿑󳑎/IdentificationMethod:󷒠󵗺󱜂󲄘󾗜󸶲󸳣󱜂󲄘󲖸󱿠󽘜eFuse 󱾛󱜂󲄘󱘰󱼋󴝘󶳧󲃅󳐴封󴋄󱜂󲄘󾗜󸶲󸳣󱜂󲄘󲖸󱿠󽘜󱙛󷒠󵗺󵵙 eFuse󽘜󴝘 󶳧 󲼴󷨬󵷘󱘰󱼋󵵙󱜂󲄘󸊿󴏵󴎜󸚬󱟺󽘜󳦕󱜂󲄘󲡋󶚓󴎜󶘫务󵵙 PW 󱿠Chipproducts: Identifiedbypartnumber,eFusebitsandchipmarking. Module and Development Board products: Identified by the part number, chip eFuse, specificationidentifieronthemoduleshieldmarking,orPWNo.oncartonbox. www.espressif.com  Page4 /95. 󱾮󴇠󳔈󲄨/ImpactofChange1) 󲄘󸢹󲃅󳘮󷃫/Quality&Performance: ESP32-C2 󷒠󵗺󵗽󴉆 v2.0 󳖔󹲃󳴉󹀢󳬘󲷢󵗽󴉆󵵙 ESP-IDF 󱡋󵫞󽘜󱯉󱠅󵗽󴉆󸛝󱾍󸊼󱘕󹪸󴩐󷟦 5-5󽘙 务󵵙󸀮󴏵󾙔ESP32-C2 v2.0 󳧟󹧞 ESP-IDF 󵗽󴉆󾙕󱡋󵫞󸛋󵗽󴉆󱿔󹲥󲡋󷛇󳕅󶳉 20 KB 󵵙 SRAM 󲃅󶳉 100KB 󵵙flash 󶐀󹠣󱡹󹲁󵸂󳐴封󱡋󵫞󽘘󱝥󲷫󹢃󳍟󵫞󱙚󱱆󽘙󳾾󲝿󲺴󸃔󱯜 flash 󲔩 ESP32-C2 󶥚󱳊󱜂󲄘󱘔󳉛󶳲󸶲󸳣󱛌󵙀󳾒󺀪󸚧󴳖󸚻󽘜󱙺󹘺󶁢󸚊󸛋 flash 󵵙󲄘󸢹󲃅󳘮󷃫󴽹󸥩󱙺󹘺󵵙󸉔󴭁TheESP32-C2chiprevisionv2.0mustbeusedwithaspecifiedversionofESP-IDF.Fordetails,refertothetable"RequiredESP-IDFVersionforESP32-C2v2.0"inPara5-5)below.ESP32-C2v2.0providesapproximately 20 KB of additional SRAM and around 100 KB of extra flash memory for projectdevelopment(actualgainsmayvarydependingonthespecificapplication).Thenewlyin-packageflashhaspassedmaterialqualificationtestsfortheESP32-C2seriesproduct.Espressifconfirmsthatthequalityandperformanceofthisflashmeetitsstandards.2) 󱛽󴈮/Delivery: 󱾮󴇠󲀀󵵙󱜂󲄘󲺽󱣣󳬐󴎜󱱆󱛽󸢸󲂐󴈮󽘘StandardLeadTime󽘙󱘗󱾮告󵫬󱛖󱾮󴇠󱴙󱜂󲄘󵵙󱽓󳾒󳍞󲵙󴈄󹢔󽘜󳍞󲵙󶼓󲼕󲀀󲺽󱧃󴦛󵫑󱜂󱡹󳍟󱙚󶁢󱣣󴉃󴊜󸚈󱻡󵵙󴦜󳋃󱛽󱝑󽘜󸛝󲷱󳧋󲼕󳗐模󳦎󸱒󱝾󱻏󶳊󳌨󺀪󸚧󶁢󸚊󱾮󴇠󲀀󱜂󲄘Theupgradedproductswillmaintainthestandardleadtime.However,duetolimitedrawmaterialinventoryforthepreviousversionchips,productionandsupplywillceaseoncetheinventoryisdepleted.Toensurethesmoothdeliveryoffutureorders,customersareadvisedtopromptlycompletesoftwareupgradesandverifytheupdatedproduct.3) 󸚈󸢾去󵿇/OrderingCode: 󷒠󵗺󽘜󴝘󶳧󲃅󳐴封󴋄󱜂󲄘󾗜󸛝󱡋󵫞󳾾󵵙󸚈󸢾去󵿇󱘕󱻡󽘜󱾮󴇠󲀀󸚈󸢾去󵿇󱾍󸊼󴩐󷟦 1Chips,modules,anddevelopmentboards:Pleaseplaceordersusingtheneworderingcode.RefertoPara1fortheupdatedorderingcode.4) 󸚊󸚧/Certification: 󱘗󳔈󲄨/Noimpact5) 󸱒󱝾/Software: a) 󹤆󵺂 ESP32-C2 󶥚󱳊󱻏󶳊󱙚 v2.0 󵗽󴉆󷒠󵗺󽘜󲤖󴋴󳜁󳓓󱴙󱡋󵫞󵵙󴂞󴀮󱛖 v2.0 󵵙󷒠󵗺󵗽󴉆󽘜󱳎󵡂󴈄󵵙 ESP-IDF 󵗽󴉆󱿔󷃫󴀞󴰢󱯐󲸣 v2.0 󷒠󵗺󱙚󶁢󱣣󱯐󲸣󳘮󽘜󸛝󲺽 ESP-IDF 󱻏󶳊󷋼󹧞󴭁󵗽󴉆󳦕󴇠󺂿󵗽󴉆󽘘󱾍󸊼󱘕󸀮󾙔ESP32-C2v2.0 󳧟󹧞 ESP-IDF 󵗽󴉆󾙕󽘙 www.espressif.com  Page5 /9󹧞󸉔󴱅󳞲󵵙󴂞󽘜ESP-IDFv5.1.5 󲃅 v5.3.2 󱘙 ESP32-C2v2.0 󷒠󵗺󱯐󲸣告󷒠󵗺󵗽󴉆󴓍󴍦󲔩󱘺󱙂封󳉳务󴉃󱾂󹢲󱡋󷃫󾙒ESP32C2_REV2_DEVELOPMENT󾙓󸶆󹲁󴊜󸧆󸳣󸴐󱛩󸳣󴀿󵵙󴓍󴍦AstheESP32-C2chipseriesupgradestothev2.0chiprevision,ifyouarecurrentlyusingapre-v2.0chipversion,yourexistingESP-IDFversionmaynotbecompatiblewiththev2.0chip.Toensurecompatibility,pleaseupgradeESP-IDFtotherequiredversionorhigher(seethetablebelow:"RequiredESP-IDFVersionforESP32-C2v2.0").ItisimportanttonotethatESP-IDFv5.1.5andv5.3.2arecompatiblewithESP32-C2v2.0chip.However,chip versionchecks havenotbeen removedinthese two releases. Tobypasstheseoutdatedchecks,enablethe󾙒ESP32C2_REV2_DEVELOPMENT󾙓option.  ESP32-C2v2.0 󳧟󹧞 ESP-IDF 󵗽󴉆/RequiredESP-IDFVersionforESP32-C2v2.0󾗜 󱾥󳉳󵗽󴉆ReleaseBranch󳰡󷗼󵗽󴉆Recommended󱡋󵫞 ESP32-C2v2.0 󵗽󴉆󱜂󲄘󵵙󹧞󴭁 ESP-IDF 󵗽󴉆RequiredESP-IDFversionwithESP32-C2v2.0release/v5.45.4 󱾛󱯇󱝥󱘔󵗽󴉆v5.4orabove5.4release/v5.35.3.2 󱾛󱯇󱝥󱘔󵗽󴉆 v5.3.2orabove5.3.2release/v5.25.2.4 󱾛󱯇󱝥󱘔󵗽󴉆 v5.2.4orabove5.2.4release/v5.15.1.5 󱾛󱯇󱝥󱘔󵗽󴉆 v5.1.5orabove5.1.5release/v5.05.0.8 󱾛󱯇󱝥󱘔󵗽󴉆 v5.0.8orabove5.0.8b) 󺝟󸚊󳜵󱰤󱘕󽘜ESP32-C2󽘘ESP8684󽘙󶥚󱳊󱜂󲄘务 SPIflash 󱘗󳻦󳬐󷋩󱶴󴄞󱧃󱶧󷃫󲤖󹧞󸉔 flash 󷋩󱶴󴄞󱧃󱶧󷃫󽘜󸛝󶾌󶥚󳦏󱝭Bydefault,theSPIflashintheESP32-C2(ESP8684)seriesproductsdoesnotsupporttheauto-suspendfeature.Ifyourequiretheflashauto-suspendfunctionality,pleasecontactus. 6) 󳩏󴉊󸊿󴏵󱚝/Datasheet: ESP8684 󶥚󱳊󷒠󵗺󸊿󴏵󱚝󾗜󴇠󳾾󷒠󵗺󸚈󸢾去󵿇ESP8684 󳧟󴈄󴝘󶳧󸊿󴏵󱚝󾗜󴇠󳾾󴝘󶳧󵵙󱯜󶷉󷒠󵗺󱝥󱾛󴝘󶳧󸚈󸢾去󵿇ESP32-C2 󶥚󱳊󷒠󵗺󱸀󸛕󸀮󾗜󴷲󱶩󷒠󵗺󵗽󴉆 v2.0 󵵙󸚬󱳧󳿑󳑎ESP8684SeriesDatasheet:UpdatethechiporderingcodeAllESP8684moduledatasheets:Updatetheembeddedchipinthemoduleandmoduleorderingcode  www.espressif.com  Page6 /9ESP32-C2SeriesSoCErrata:Addidentificationmethodsforchiprevisionv2.06. 󱾮󴇠󱴙󲀀󱜂󲄘󲠦󵢻/HowtoDealwithProductsFIFO7. 󵸒󱯃󳪄󲁨/RelatedReport(s):RRFPerformanceTestReportPass8. 󶳼󱡋󵫞󶻰󵵙󺀪󸚧󳐫󸚔/VerificationSuggestionToUsers󸛝󶁢󸚊󳜁󴂞󲀥󱡋󵫞 flash 󷋩󱶴󴄞󱧃󱶧󷃫󽘜󲤖󴈄󽘜󸛝󶾌󶥚󱙺󹘺󲔩󱡋󵫞󱾮󴇠󲀀󱜂󲄘󱴙󽘜󸛝󶁢󱣣󳜁󵵙󸱒󱝾󳉛󱻏󶳊󷋼󶕸󱿷󸉔󴭁󵗽󴉆󳦕󴇠󺂿󵗽󴉆󵵙 ESP-IDFPleasecontactEspressififyouneedtheflashauto-suspendfeature.Beforeusingtheupdatedproduct,ensurethatyoursoftwarehasbeenupdatedtotherequiredversionoraboveofESP-IDF.  www.espressif.com  Page7 /9  AppendixI 󱾮󴇠󲺧󴪒/ChangeComparison1󱜂󲄘󲙨󴉆󱣭󳚣/ProductBasicInformationNo.󹲁󵸂/Item󱾮󴇠󱴙/BeforeChange󱾮󴇠󲀀/AfterChange1.1 ChipRevision v1.2v2.01.2eFuse 󸚬󶆺󱟺/eFuseidentificationbitEFUSE_BLK2_DATA1_REG[21]01EFUSE_BLK2_DATA1_REG[20]10EFUSE_BLK2_DATA1_REG[19]00EFUSE_BLK2_DATA1_REG[18]00EFUSE_BLK2_DATA1_REG[17]10EFUSE_BLK2_DATA1_REG[16]001.3ProductOrderingCode󴈄󱾮󴇠󽘜󸛝󱾍󸊼󴩐󷟦 1 ChangedandcanrefertoPara11.4ChipMarking󽘘EspressifTrackingInformation󽘙xCxxxxxxxxxDxxxxxxxx1.5ModuleMarking  󽘘SpecificationMarkingLine󽘙MCXXXXMDXXXX www.espressif.com  Page8 /92ESP8684H4 󲃅 ESP8684H4X 󱯜󶷉 flash 󱣭󳚣/In-packageFlashUpdateofESP8684H4&ESP8684H4XNo.󹲁󵸂/Item󱾮󴇠󱴙/BeforeChange󱾮󴇠󲀀/AfterChange2.1In-packageFlashFlashAAddFlashB2.2FlashOperatingVoltage󽘘NoChange󽘙2.7V~3.6V2.7V~3.6V2.3Flash Capacity(NoChanges)4 MB 4 MB 2.4FlashTemperatureRange(NoChanges)-40℃ ~ 105 ℃ -40℃ ~ 105 ℃ 2.5FlashPageProgramTime(Typ./Max󽘙0.5 ms/ 4 ms 0.25 ms/ 2 ms 2.6FlashSectorEraseTime(4KB)(Typ./Max󽘙45 ms / 500 ms 25 ms / 300 ms 2.7FlashBlockEraseTime(32KB) (Typ./Max󽘙0.15 s / 1.6 s 0.1 s / 0.8 s 2.8FlashBlockEraseTime(64KB)(Typ./Max󽘙0.25 s / 3.0 s 0.15 s / 1.0 s 2.9FlashChipEraseTime (Typ./Max󽘙12 s / 60 s 5 s / 50 s  www.espressif.com  Page9 /9󸼒󱝾󸚈󹠴EspressifEmailNotifications󱙺󹘺󱙚󴱅󱯤󵫞󳧋󳱠󱡹󵫰󲵊󸼒󱝾󸶲󵾝󴈋󱶪󽘜󵫞󳧋󱿔󸶲󸳣󱙺󹘺󸚈󹠴󶥚󶴂󳰚󳻱󳩏󴉊󳽳󴐴󴇠󳾾󳾾󹠪󸶲󸚕PCN 󶖾󸼒󱝾󸶲󵾝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. 󲷱󳧋󲄨󳍟󸉔󴭁CustomerResponseRequirements󹧞󲷱󳧋󳩁󱱆󵵙󱾮󴇠/ChangeRequiringCustomerApproval󾗜a) 󲷱󳧋󹲃󲔩󱙺󹘺封󱲡 PCN 󲀀󵵙 30 󲡵󱯜󲁨󵾝󱙺󹘺󳉛󳻱󱳭 PCN󲤖󲷱󳧋󴉃󲔩󳰚󳻱󱳭 PCN 󲀀󵵙 30 󲡵󱯜󲁨󵾝󳉛󳻱󱳭󽘜󱳎󸋁󱙚󲷱󳧋󳻱󱳭󱾮󴇠CustomersarerequestedtoacknowledgereceiptofthePCNwithin30calendardaysfromthedateofissueofthePCN.Customerswouldbeconsideredasnotified30calendardaysafterissueofthePCNifnoacknowledgementisreceived.  b) 󷋩封󳉳 PCN 󱙴󴀩󸤑 90 󲡵󱯜󽘜󲷱󳧋󴯖󴈄󱞄󱠇󱯇󱝎󱾠󹺊󽘜󱳎󸀮󶆺󲷱󳧋󳰚󱾭󸛋 PCNThelackofanyadditionalresponsesfromcustomerswithin90calendardaysfromthedateofissueofthePCNconstitutesacceptanceoftheproposedchanges.󲷱󳧋󸶲󵾝/CustomerNotification󾗜a) 󲷱󳧋󹧞󲔩󱙺󹘺封󱲡 PCN 󲀀 14 󲡵󱯜󸶲󵾝󱙺󹘺󳻱󱳭󸛋 PCN 󲤖󲷱󳧋󴉃󲔩󳰚󳻱󱳭 PCN14 󴀩󱾠󹺊󱙺󹘺󽘜󱳎󸋁󱙚󲷱󳧋󶁢󸚊󸛋 PCNCustomersarerequestedtoacknowledgereceiptofthePCNwithin14calendardaysfromthedateofissueofthePCN.CustomerswouldbeconsideredashavingacknowledgedthePCNifnoresponseisreceivedafter14calendardays.󸛝󱾠󹺊󷋼 pcn@espressif.comPleasesendfeedbacktopcn@espressif.com. 󲷱󳧋󳩁󱱆/󶁢󸚊󱣭󳚣CustomerApproval/AcknowledgementandRemarks󲷱󳧋󱮷尽󱮭󶌇󾗜Customer󾙓sCompanyName:PCN 󸚪󲷯󶳶󴋴/PCNReviewResult󾗜£󳩁󱱆/󶁢󸚊 Accepted/Acknowledged£󱘗󳩁󱱆/Rejected£󹧞󸉔󱲵󴋡/FurtherAnalysisRequired󲷱󳧋󳞲󸊼/Comment:󱮷尽去󸀮󱜤󲧚󱿽Representative󾙓sName:󱮷尽去󸀮󱜤󶾀󸢴Representative󾙓sJobTitle:󱮷尽去󸀮󱜤󶘫󱿽Representative󾙓sSignature:󴀩󴈮Date: