51系列單片機(jī)中英文翻譯資料-wenkub.com
2024-10-30 05:34 本頁面
【正文】 s trigger, restore to the throne circuit sample to output , Schmitt of trigger constantly in each S5P2 , machine of cycle in having one more , then just got and restored to the throne and operated the necessary signal insidly. Restore to the throne resistance of circuit generally, electric capacity parameter suitable for 6 brilliant to shake, can is it restore to the throne signal high level duration greater than 2 machine cycles to guarantee. Being restored to the throne in the circuit is simple, its function is very important. Pieces of onechip puter system could normal running,should first check it can restore to the throne not succeeding. Checking and can pop one39。 Act as Q =At 1 o39。 P0 mouth is a twoway bus, send the introduction of 8 low addresses and data / export in timesharing The circuit of 8051 onechip puters and four I/O ports is very ingenious in design. Familiar with I/O port logical circuit, not only help to use ports correctly and rationally, and will inspire to designing the peripheral logical circuit of onechip puter to some extent. Load ability and interface of port have certain requirement, because output grade, P0 of mouth and P1 end output, P3 of mouth grade different at structure, so, the load ability and interface of its door demand to have nothing in mon with each other. P0 mouth is different from other mouths, its output grade draws the resistance supremly. When using it as the mouth in mon use to use, output grade is it leak circuit to turn on, is it is it urge NMOS draw the resistance on taking to be outer with it while inputting to go out to fail. When being used as introduction, should write 1 to a latch first. Every one with P0 mouth can drive 8 Model LS TTL load to export. P1 mouth is an accurate twoway mouth too, used as I/O in mon use. Different from P0 mouth output of circuit its, draw load resistance link with power on inside have. In fact, the resistance is that two effects are in charge of FET and together: One FET is in charge of load, its resistance is regular. Another one can is it lead to work with close at two state, make its President resistance value change approximate 0 or group value heavy two situation very. When it is 0 that the resistance is approximate , can draw the pin to the high level fast 。相對約 20,000ohms 因負(fù)載阻力 ,因為在現(xiàn)場40,000ohms,不會產(chǎn)生影響的數(shù)據(jù) ,輸入 . P2 口的結(jié)構(gòu)有些類似于 P0 口有開關(guān) . 這是促使口腔類似 ,但有些不是嘴巴大轉(zhuǎn)換控制 P1. P3 口人的多功能港口 ,嘴也越來越多 ,P1 比 、 3和 4緩沖門 . 這兩個部分 ,使她除了精確的雙向功能與 P1口僅 ,也可以使用第二功能每針 . 、 一門三轉(zhuǎn)功能實際上 它決定將產(chǎn)量數(shù)據(jù)信號門閂第二產(chǎn)出功能 . 在擔(dān)任 W=1時 ,問到生產(chǎn)信號 。 8051 年 148 芯片計算機(jī)與我走 /澳港 ,要求 P0、 P P2 和 P3. 每個港口 8準(zhǔn)確雙向口 ,共占 32 別針 . 每一個我 /O 線可作為引進(jìn)和輸出獨(dú)立 . 每個港口有門閂 (即登記特殊功能 )、駕駛?cè)?、出口實行緩沖 . 可當(dāng)門閂使 outputting 數(shù)據(jù) ,數(shù)據(jù)可以緩沖時推出 ,但這些四個功能自我同一 . 在擴(kuò)大對外開放具有時代記憶系統(tǒng) ,這四個港口可準(zhǔn)確雙向口一 /O 共同使用。51 系列單片機(jī)的功能和結(jié)構(gòu) 結(jié)構(gòu)和功能的監(jiān)控監(jiān) 51 系列之一 計算機(jī)芯片監(jiān)控監(jiān) 51 名是一幅一個電腦晶片 ,英特爾公司生產(chǎn)系列 . 這家公司推出 8 級一個計算機(jī)芯片監(jiān)控監(jiān) 51 系列之后 ,于 1980 年 8引入一個計算機(jī)芯片監(jiān)控監(jiān) ,于 1976 年 48系列 .。在擴(kuò)大對外開放具有時代記憶系統(tǒng) ,高 8P2 口地址見客 . P0 口是一個雙向車采用 8 送數(shù)據(jù)低地址 /出口Timesharing 在 8051年的巡回一個計算機(jī)芯片和四個一 /O港口很巧妙的設(shè)計 . 熟悉我 /港澳邏輯電路 ,不僅有利于正確、合理地使用港口、激勵周邊邏輯電路設(shè)計的一個計算機(jī)芯片有所提高 . 負(fù)載能力和接口港口有一定的要求 ,因為產(chǎn)量等 ,P0 和 P1口的最終產(chǎn)量、 P3口的結(jié)構(gòu) ,在不同的年級 ,所以 ,負(fù)載能力和接口要求其門南轅北轍相處 . 不同于其他 P0 口口 ,其產(chǎn)量即將年級抵抗 .。 作為在 Q=1時 ,信號線可以生產(chǎn) W. 節(jié)目時 ,它是第一個功能 ,但仍是第二個功能不用軟 件 P3 口提前成立 . 這不是硬件是在自動有兩個功能 outputted 當(dāng) CPU 進(jìn)行社會主義和尋求地點 (所在地或字節(jié) )訪 P3 口 /不是在持久排隊 ,有在硬件門閂促使 = 經(jīng)營原則 P3 口類似于 P1 口 . 生產(chǎn)級的 P3 口 ,P1,P1,內(nèi)有連接負(fù)載阻力劃 ,每個人可以帶動 4 產(chǎn)出模型LSTTL 載荷 . 而作為輸入口 ,任何 NMOS 電路可驅(qū)動 TTL或 P1 的 8051 一個電腦芯片 P3 口的正常
公司管理相關(guān)推薦
鄂ICP備17016276號-1