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说明：该at89ls52提供以下标准功能：8K字节的闪存，256字节 32内存

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说明：512-Kbit(64K x 8bit)，SPI接口，工作电压：2.7V to 3.6V

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说明：32-Mbit(4M x 8bit)，SPI接口，工作电压：2.3V to 3.6V

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说明：4-Kbit(512 x 8bit)，I2C接口，工作电压：2.5V to 5.5V

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说明：1-Kbit(128 x 8bit or 64 x 16bit)，SPI接口，工作电压：1.8V to 5.5V

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说明：Operating at 2.5 volts to meet low voltage and low power requirements, the KSZ8721 is a 10BaseT/100BaseTX/FX Physical Layer Transceiver, which provides an MII and RMII host interface to transmit and receive data.It contains the 10BaseT Physical Medium Attachment (PMA), Physical Medium Dependent (PMD), and Physical Coding Sub-layer (PCS) functions. Moreover, the KSZ8721 has on-chip 10BaseT output filtering, which eliminates the need for external filters and allows a single set of line magnetics to be used to

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说明：The EMC1438 is a high accuracy, low cost, System Management Bus (SMBus) temperature sensor. Advanced features such as Resistance Error Correction (REC), Beta Compensation (to CPU diodes requiring the BJT or transistor model) and automatic diode type detection combine to provide a robust solution for complex environmental monitoring applications.Additionally, the EMC1438 provides a hardware programmable system shutdown feature that is programmed at part power-up via a single TRIP_SET voltage channel that can

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说明：The MIC59P60 serial-input latched driver is a high-voltage (80V), high-current (500mA) integrated circuit comprised of eight CMOS data latches, a bipolar Darlington transistor driver for each latch, and CMOS control circuitry for the common CLEAR, STROBE, CLOCK, SERIAL DATA INPUT, and OUTPUT ENABLE functions. Similar to the MIC5842, additional protection circuitry supplied on this device includes thermal shutdown, under voltage lockout (UVLO), and over-current shutdown. The bipolar/CMOS combination provide