有關(guān)單片機at89c51中英文翻譯-在線瀏覽
2025-02-23 02:18本頁面
【正文】 t TTL inputs. When 1s are written to port 0 pins, the pins can be used as high impedance inputs. Port 0 may also be configured to be the multiplexed low order address/bus during accesses to external program and data memory. In this mode P0 has internal pull ups. Port 0 also receives the code bytes during Flash programming, and outputs the code bytes during program verification. External pull ups are required during program verification. VCC: Supply voltage Programmable serial channel Two 16bit Timer/Counters 128 8bit internal RAM Fully static operation: 0 Hz to 24 MHz 4K bytes of insystem reprogrammable Flash memory 畢業(yè)設(shè)計（論文） 外文翻譯 畢業(yè)設(shè)計（論文）題目 ： 以 8155 為顯示接口的液位調(diào)節(jié)器 外文題目 ： AT89C51 譯文題目 ： AT89C51 學(xué)生姓名： 溫石寶 專 業(yè)： 測控技術(shù)與儀器 0602 班 指導(dǎo)教師： 沈懷洋 2 AT89C51 The AT89C51 is a lowpower, highperformance CMOS 8bit microputer with 4K bytes of Flash programmable and erasable read only memory (PEROM) and 128 bytes of data randomaccess memory(RAM). The device is manufactured using ATMEL Co.’s high density nonvolatile memory technology and is patible with the industrystandard MCS51 instruction set and pinout. The onchip Flash allows the program memory to be reprogrammed insystem or by a conventional nonvolatile memory programmer. By bining a versatile 8bit CPU with Flash on a monolithic chip, the ATMEL Co.’s AT89C51 is a powerful microputer which provides a highlyflexible and costeffective solution to many embedded control applications. Features: Compatible with instruction set of MCS51 products Endurance: 1000 write/erase cycles Threelevel program memory lock 32 programmable I/O lines Six interrupt source Lowpower idle and Powerdown modes Function Characteristic Description: The AT89C51 provides the following standard features: 4K bytes of Flash memory, 128 bytes of RAM, 32 I/O lines, two 16bit timer/counters, a five vector twolevel interrupt architecture, a full duplex serial 3 port, onchip oscillator and clock circuitry. In addition, the AT89C51 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 Powerdown Mode saves the RAM contents but freezes the oscillator disabling all other chip functions until the next hardware reset. Pin Description: GND: Ground Port 1: Port 1 is an 8bit bidirectional I/O port with internal pull ups. The Port 1 output buffers can sink/source four TTL inputs. When 1s are written to Port 1 pins they are pulled high by the internal pull ups and can be used as inputs. As inputs, Port 1 pins that are externally being pulled low will source current (IIL) because of the internal pull ups. Port 1 also receives the loworder address bytes during Flash programming and verification. Port 3: Port 3 is an 8bit bidirectional I/O port with internal pull ups. The Port 3 output buffers can sink/source four TTL inputs. When 1s are written to Port 3 pins they are pulled high by the internal pull ups and can be used as inputs. As inputs, Port 3 pins that are externally being pulled low will source current (IIL) because of the pull ups. Port
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