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技術(shù)指標(biāo)：R5F21258SNFP#V2
重置后，軟件將確定是繼續(xù)RTC計(jì)數(shù)操作還是初始化RTC，然后執(zhí)行
根據(jù)確定的操作。
備用電池功能使RTC和副時(shí)鐘振蕩器能夠繼續(xù)使用由
即使在VCC引腳上的電壓下降時(shí)，VBATT也可以正常工作。僅當(dāng)電壓接通時(shí)才必須初始化RTC
VCC引腳繼續(xù)下降，并且VBATT的電源停止。但是他們倆都掛了
當(dāng)VBATT的電壓低于保證范圍時(shí)，VCC引腳和VBATT引腳在0V上導(dǎo)通一次。
VBATT，請(qǐng)執(zhí)行上電重置。
假設(shè)VBATT電路最多需要15分鐘才能為連接的電容器充電，并且
充滿電的電容器可以供電至少10天。
在本應(yīng)用筆記中，對(duì)以下內(nèi)容進(jìn)行了驗(yàn)證以確定：
如果在一段時(shí)間內(nèi)恢復(fù)了VCC電壓并釋放了復(fù)位，則VBATT可以供電。
如果VBATT的充電時(shí)間足夠。
a復(fù)位后，RTC寄存器中存儲(chǔ)的值是否正確。
在VCC電壓保持不變的情況下，RSK的調(diào)試LCD上顯示的RTC時(shí)間信息每秒更新一次。
保留。
同樣，在以下時(shí)間更新存儲(chǔ)在E2 DataFlash中的RTC時(shí)間信息（備份）：
a重置后經(jīng)過(guò)1秒鐘。
15 15分鐘后，這是為連接到VBATT的電容器充電所需的時(shí)間。
當(dāng)更新RTC時(shí)間信息的小時(shí)計(jì)數(shù)器（RHRCNT）時(shí)。
表1.1列出了外圍功能及其應(yīng)用，圖1.1列出了操作概述。
操作概述：R5F21258SNFP#V2
在本應(yīng)用筆記中，使用以下項(xiàng)目作為標(biāo)準(zhǔn)來(lái)驗(yàn)證RTC時(shí)間信息。根據(jù)
確認(rèn)后，RTC被確定為繼續(xù)運(yùn)行或被初始化。圖5.1顯示了驗(yàn)證程序。
-RTC計(jì)數(shù)源：副時(shí)鐘運(yùn)行
-RTC控制寄存器：與初始值相同
-RTC自動(dòng)調(diào)整設(shè)置：?jiǎn)⒂么嗽O(shè)置時(shí)，其值與初始值相同
-RTC時(shí)間信息：正確的值是時(shí)間信息，且在備份時(shí)間起10天內(nèi)
E2 DataFlash中的信息。
-RTC警報(bào)信息：正確的值是時(shí)間信息，并且在備份時(shí)間起的10天內(nèi)
E2 DataFlash中的信息。
-VBATT電路中的電荷檢測(cè)：冷啟動(dòng)，距先前的RTC初始化已過(guò)去15分鐘。
RTC初始設(shè)置值如下：
-小時(shí)模式：12小時(shí)模式
-初始時(shí)間設(shè)置：2013年1月1日，星期二，00：00：00
-警報(bào)設(shè)置：禁用
-RTCOUT輸出：輸出禁用
-自動(dòng)調(diào)整：未使用
-計(jì)數(shù)來(lái)源：標(biāo)準(zhǔn)時(shí)鐘負(fù)載的副時(shí)鐘
-時(shí)間捕獲：未使用
-中斷：每秒產(chǎn)生一次周期性中斷（PRD）。
警報(bào)中斷和進(jìn)位中斷均被禁用。
制造商: Renesas Electronics
產(chǎn)品種類: 16位微控制器 - MCU
RoHS: 詳細(xì)信息
系列:R5F21258SNFP#V2
封裝: Tray
高度: 1.7 mm
長(zhǎng)度: 10 mm
寬度: 10 mm
商標(biāo): Renesas Electronics
濕度敏感性: Yes
產(chǎn)品類型: 16-bit Microcontrollers - MCU
工廠包裝數(shù)量: 160
子類別: Microcontrollers - MCU
單位重量: 300 mg
以下物料均有現(xiàn)貨庫(kù)存：R5F21258SNFP#V2
STM32F101RBT6
STM32F103CBT6
STM32F103C8T6
STM32F103R8T6
STM32F103VBT6
STM32F103RBT6
STM32F103VCT6
STM32F103ZET6
STM32F103VET6
STM32F103RET6
STM32F103RCT6
STM32F103RGT6
STM32F103RCY6TR
STM32F103T8U6
STM32F103VGT6
STM32F103ZGT6
STM32F105RBT6
STM32F105RCT6
STM32F105R8T6
STM32F105VCT6
STM32F107VCT6
STM32F107RCT6
STM32F100R8T6B
STM32F100C6T6B
STM32F100VCT6B
STM32F100RBT6B
STM32F100C8T6B
STM32F100C4T6B
STM32F215RGT6
STM32F205RGT6
STM32F205RET6
STM32F205RCT6
STM32F205VGT6
STM32F205VET6
STM32F205VCT6
STM32F205ZET6
STM32F205ZGT6
STM32F207VCT6
STM32F207VGT6
STM32F207VET6
R5F21258SNFP#V2
STM32F207ZET6
STM32F207ZGT6
STM32F373CCT6
STM32F301K8T6
STM32F302C8T6
STM32F302CBT6
STM32F302RCT6
STM32F302RBT6
STM32F302K8U6
STM32F302VET6
STM32F302VDT6
STM32F302VCT6
STM32F303CBT6
STM32F303CCT6
STM32F303RBT6
STM32F303RCT6
STM32F303RET6
STM32F303VCT6
STM32F303VET6
STM32F303ZET6
STM32F411CEU6
STM32F411CCU6TR
STM32F411RCT6
STM32F411RET6
STM32F411VET6
STM32F412RET6
STM32F413VGT6
STM32F415RGT6
STM32F415VGT6
STM32F410CBU6
STM32F410RBT6
STM32F427IGT6
STM32F427VIT6
STM32F427VGT6
STM32F427ZGT6
STM32F427ZIT6
STM32F429BIT6
STM32F429IIT6
STM32F429IGT6
STM32F429VGT6
STM32F429VIT6
STM32F429VET6
STM32F429ZGT6
STM32F429ZIT6
STM32F429ZET6
STM32F446RET6
STM32F446RCT6
STM32F446VET6
STM32F446VCT6
STM32F446ZET6
STM32F446ZEJ6
STM32F469NIH6
STM32F401CEU6
STM32F401CBU6
STM32F401RCT6
STM32F401RBT6
STM32F401RET6
STM32F405RGT6
STM32F405VGT6
STM32F405ZGT6
STM32F407IGT6
STM32F407IGH6
STM32F407IET6
STM32F407VGT6
STM32F407VET6
STM32F407ZET6
STM32F407ZGT6
STM32F407ZGT7
STM32F400CBT6
STM32F722RET6
STM32F730R8T6
STM32F730V8T6
STM32F746VGT6
STM32F756VGT6
STM32F765VIT6
STM32F767ZGT6
STM32F767IGT6
STM32F767NIH6
STM32F767BIT6
STM32F767VIT6
STM32F031K6U6
STM32F031F6P6
STM32F031C6T6TR
STM32F030K6T6
STM32F030F4P6
STM32F030C8T6
STM32F030CCT6
STM32F030C6T6
STM32F030RCT6
STM32F030R8T6
STM32F042K6T6
STM32F042F6P6
STM32F042C6T6
STM32F051K8U6
STM32F051K6U6
STM32F051C8T6
STM32F051C8T7TR
STM32F051R8T6
STM32F051R8T7
STM32F071VBT6
STM32F071CBT6
STM32F071CBU6
STM32F071RBT6
STM32F072VBT6
STM32F072CBT6
STM32F072C8T6
STM32F072CBU6TR
STM32F072RBT6
STM32F072R8T6
STM32F070CBT6
STM32F070F6P6
STM32F070RBT6
STM32G474VET6
STM32G431CBT6
STM32G071CBT6
STM32G071GBU6
STM32G071RBT6
STM32G070KBT6
STM32G070CBT6
STM32G070RBT6
STM32G031F8P6
STM32G031K6T6
STM32G031J6M6
STM32G031G8U6
STM32G030K6T6
STM32G030K8T6
STM32G030C8T6
STM32G030F6P6TR
STM32H743BIT6
STM32H743IIT6
STM32H743VIT6
STM32H743VIH6
STM32H743ZIT6
STM32H743XIH6
STM32H750IBK6
STM32H750VBT6
STM32H750XBH6
STM32L151C8T6A
STM32L151CBT6A
STM32L151CBU6
STM32L151CCU6
STM32L151RCT6
STM32L151RET6
STM32L151RDT6
STM32L151VDT6
STM32L431CCT6
STM32L431CBT6
STM32L431CCU6
STM32L431RCT6
STM32L431VCT6
STM32L433VCT6
STM32L433RCT3
STM32L433RCT6
STM32L452REY6TR
STM32L471RGT6
STM32L471RET6
STM32L475VET6
STM32L476RGT6
STM32L476VET6
STM32L476RCT6
STM32L476VGT6
STM32L496RGT6
STM32L011D4P6
STM32L010C6T6
STM32L011F4U6TR
STM32L011G4U6
STM32L031F6P6
STM32L031K6T6
STM32L031G6U6
STM32L051K8U6
STM32L051C8T6
STM32L051R8T6
STM32L052R8T6
STM32L053R8T6
STM32L071RBT6
STM32L071CBT6
STM32L072RBT6
STM32L072CBT6
STM32L073RZT6
STM32L073V8T6
STM8L151C6T6
STM8L151C8T6
STM8L151K4T6
STM8L151K6T6
STM8L151G6U6
STM8L151G4U6
STM8L152C6T6
STM8L152R8T6
STM8L152M8T6
STM8L101F3P6TR
STM8L101K3T6
STM8L101F3U6TR
STM8L001J3M3TR
STM8L051F3P6
STM8L052C6T6
STM8L052R8T6
STM8L050J3M3TR
TPS53315RGFR
TPS53511RGTR
TPS53515ARVER
TPS53603ADRGR
TPS53659RSBR
TPS53679RSBR
TPS53631RSBR
TPS53622RSBR
TPS53015DGSR
TPS54140DGQR
TPS54160DGQR
TPS54160ADGQR
TPS54160ADRCR
TPS5410DR
TPS54218RTER
TPS54218ARTER
TPS54227DDAR
TPS54229DDAR
TPS54225PWPR
TPS54228DDAR
TPS54226PWPR
TPS54232DR
TPS54231DR
TPS54239DDAR
TPS54240DGQR
TPS54260DGQR
TPS54260QDGQRQ1
TPS54286PWPR
TPS54202HDDCR
TPS5420DR
TPS54202DDCR
TPS54201DDCR
TPS54319RTER
TPS54318RTER
TPS54312PWPR
TPS54310PWPR
TPS54328DDAR
TPS54329DDAR
TPS54320RHLR
TPS54327DDAR
TPS54329EDDAR
TPS5432DDAR
TPS54326PWPR
TPS54325PWPR
TPS54331DR
TPS54335ADDAR
TPS54331DDAR
TPS54332DDAR
TPS54336ADDAR
TPS54335ADRCR
TPS54340DDAR
TPS54340QDDARQ1
TPS54360BDDAR
TPS54360DDAR
TPS54361DPRR
TPS54360BQDDARQ1
TPS54386PWPR
TPS54394PWPR
TPS5430DDAR
TPS54302DDCR
TPS5430QDDARQ1
TPS54308DDCR
TPS54428DDAR
TPS54427DDAR
TPS54418RTER
TPS54519RTER
TPS54527DDAR
TPS54525PWPR
TPS54521RHLR
TPS54528DDAR
TPS54531DDAR
TPS54540DDAR
TPS54560DDAR
TPS54561DPRR
TPS54560BDDAR
TPS5450DDAR
TPS5450QDDARQ1
TPS54610PWPR
TPS54612PWPR
TPS54620RHLR
TPS54628DDAR
TPS54620RGYR
TPS54623RHLR
TPS54678RTER
TPS54821RHLR
TPS54824RNVR
TPS548D22RVFR
TPS548A20RVER
TPS5401DGQR
TPS5402DR
TPS5403DR
TPS54040DGQR
