外部数据存储器采用PCF8583；

The use of external data memory PCF8583;

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系统选w 78le516单片机和CPLD来构造控制电路，用读写速度快、功耗低的低电压外部数据存储器CF卡存储采集完的信号。

The system select W78LE516 MCU and CPLD to construct the control circuit and use quickly read and write low power consumption, low-voltage external data memory CF card to save the signal.

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清单25展示了如何写到外部存储器，以存储公共数据。

Listing 25 shows how to write to external storage to store public data.

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