世纪芯—AT89C1051U 芯片解密

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AT89C1051U Features：
　　Compatible with MCS-51Products
　　1K Bytes of Reprogrammable Flash Memory
　　– Endurance: 1,000 Write/Erase Cycles
　　2.7V to 6V Operating Range
　　Fully Static Operation: 0 Hz to 24 MHz
　　Two-Level Program Memory Lock
　　64 x 8-Bit Internal RAM
　　15 Programmable I/O Lines
　　Two 16-Bit Timer/Counters
　　Six Interrupt Sources
　　Programmable Serial UART Channel
　　Direct LED Drive Outputs
　　On-Chip Analog Comparator
　　Low Power Idle and Power Down Modes
　　AT89C1051U Description：
　　The AT89C1051U is a low-voltage, high-performance CMOS 8-bit microcomputer with
　　1K bytes of Flash programmable and erasable read only memory. It has the same
　　functionality and operation as the AT89C1051 with the addition of a UART programmable
　　serial port. The device is manufactured using Atmel’s high-density nonvolatile
　　memory technology and is compatible with the industry standard MCS-51instruction
　　set. By combining a versatile 8-bit CPU with Flash on a monolithic chip, the Atmel
　　AT89C1051U is a powerful microcomputer which provides a highly flexible and cost
　　effective solution to many embedded control applications.
　　The AT89C1051U provides the following standard features: 1K bytes of Flash, 64
　　bytes of RAM, 15 I/O lines, two 16-bit timer/counters, a five-vector, two-level interrupt
　　architecture, a full duplex serial port, a precision analog comparator, on-chip oscillator
　　and clock circuitry. In addition, the AT89C1051U is designed with static logic for operation
　　down to zero frequency and supports two software-selectable power saving
　　modes. The Idle Mode stops the CPU while allowing the RAM, timer/counters, serial
　　port and interrupt system to continue functioning. The Power Down Mode saves the
　　RAM contents but freezes the oscillator disabling all other chip functions until the next
　　hardware reset.

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