机械专业外文文献翻译-外文翻译--AT89C2051
8页1、AT89C2051AT89C2051 is made in the ATMEL Corporation, which is the low-voltage, high-performance CMOS8-bit microcontroller,Tablets containing repeated 2k bytes of program memory erasable read-only (PEROM) and random 128bytes data memory (RAM), device using ATMELs high density, non-volatile memory technology, Compatible with the standard of MCS-51 instruction set, built-chip 8-bit general-purpose central processing unit and repeatedly write the Flash memory, which can effectively reduce the develo
2、pment costs. AT89C2051 features a powerful single-chip can provide cost-effective in many Applications.Main features:Compatible the MCS51 command system;Contains the 2KB memory re-programming FLASH (1000);2.7 6V voltage range;the whole Static work: 0Hz 24KHz;Secrets 2 Program Memory Lock128 8-bit internal RAM15 programmable I / O linesTwo 16-bit timer / counter6 interrupt sources, two external interrupt sourcesProgrammable Serial ChannelHigh Precision Voltage Comparator (P1.0,P1.1,P3.6);Have the
3、 output port of the LED direct drive Low-power idle and power-down mode The pin Picture of AT89C2051Picture one the pin of AT89C2051AT89C2051s functional description:VCC: Power Supply VoltageGND: landP1 port: P1 mouth is a group of 8-bit bi-directional I / O interface, P1.2 P1.7 provide internal pull-up resistor,P1.0 and P1.1 internal supreme pull-up resistor. P1 mouth output buffer can absorb the current 20mA and direct-drive LED.When Programming and calibration, P1 mouth as the eighth address
4、receive.P3 mouth: P3 port P3.0 P3.5, P3.7 is the internal pull-up resistor with the seven bi-directional I / O interface. Did not bring out the P3.6,It as a generic I / O port, but can not visit. Can be used as a fixed-chip input comparator output signal. when P3 write 1, they were highed the internal pull-up resistor can be raised as an input port.P3 port special function as shown in table 1:Table 1 P3 mouths special features引脚功能特性P3.0RXD (串行输入口)P3.1TXD (串行输出口)P3.2 (外中断0)P3.3 (外中断1)P3.4T0 (定时/计
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