參數(shù)資料
            型號(hào): PSD8135V20JIT
            廠商: 意法半導(dǎo)體
            元件分類: 基準(zhǔn)電壓源/電流源
            英文描述: Enhanced High Power Factor Preregulator 16-PDIP 0 to 70
            中文描述: Flash在系統(tǒng)可編程ISP的外設(shè)的8位微控制器
            文件頁數(shù): 29/110頁
            文件大?。?/td> 1737K
            代理商: PSD8135V20JIT
            29/110
            PSD813F2, PSD833F2, PSD834F2, PSD853F2, PSD854F2
            SRAM
            The SRAM is enabled when SRAM Select (RS0)
            from the DPLD is High. SRAM Select (RS0) can
            contain up to two product terms, allowing flexible
            memory mapping.
            The SRAM can be backed up using an external
            battery. The external battery should be connected
            to Voltage Stand-by (V
            STBY
            , PC2). If you have an
            external battery connected to the PSD, the con-
            tents of the SRAM are retained in the event of a
            power loss. The contents of the SRAM are re-
            tained so long as the battery voltage remains at
            2 V or greater. If the supply voltage falls below the
            battery voltage, an internal power switch-over to
            the battery occurs.
            PC4 can be configured as an output that indicates
            when power is being drawn from the external bat-
            tery. Battery-on Indicator (VBATON, PC4) is High
            with the supply voltage falls below the battery volt-
            age and the battery on Voltage Stand-by (V
            STBY
            ,
            PC2) is supplying power to the internal SRAM.
            SRAM Select (RS0), Voltage Stand-by (V
            STBY
            ,
            PC2) and Battery-on Indicator (VBATON, PC4)
            are all configured using PSDsoft Express Configu-
            ration.
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