鍗曠墖鏈哄師鐞嗗強鎺ュ彛
鏉庢湞闈?/p>
1.89C51
鍗曠墖鏈哄唴鍖呭惈鍝簺涓昏閫昏緫鍔熻兘閮ㄤ欢锛?/p>
绛旓細
80C51
绯诲垪鍗曠墖鏈哄湪鐗囧唴闆嗘垚浜嗕互涓嬩富瑕侀�昏緫鍔熻兘閮ㄤ欢锛?/p>
(l)CPU(
涓ぎ澶勭悊鍣?/p>
):8
浣?/p>
(2)
鐗囧唴
RAM:128B
(3)
鐗规畩鍔熻兘瀵勫瓨鍣?/p>
:21
涓?/p>
(4)
绋嬪簭瀛樺偍鍣?/p>
:4KB
(5)
骞惰
I/O
鍙?/p>
:8
浣嶏紝
4
涓?/p>
(6)
涓茶鎺ュ彛
:
鍏ㄥ弻宸ワ紝
1
涓?/p>
(7)
瀹氭椂鍣?/p>
/
璁℃暟鍣?/p>
:16
浣嶏紝
2
涓?/p>
(8)
鐗囧唴鏃堕挓鐢佃矾
:1
涓?/p>
2.89C51
鐨?/p>
EA
绔湁浣曠敤閫旓紵
绛旓細
/EA
绔帴楂樼數骞虫椂锛?/p>
CPU
鍙闂墖鍐?/p>
flash Rom
骞舵墽琛屽唴閮ㄧ▼搴忥紝瀛樺偍鍣ㄣ�?/p>
/EA
绔帴浣庣數骞虫椂锛?/p>
CPU
鍙闂閮?/p>
ROM
锛屽苟鎵ц鐗囧绋嬪簭瀛樺偍鍣ㄤ腑鐨勬寚浠ゃ�?/p>
/EA
绔繚鎸侀珮鐢靛钩鏃讹紝
CPU
鎵ц鍐呴儴瀛樺偍鍣ㄤ腑鐨勬寚浠ゃ�?/p>
3. 89C51
鐨勫瓨鍌ㄥ櫒鍒嗗摢鍑犱釜绌洪棿
?
濡備綍鍖哄埆涓嶅悓绌洪棿鐨勫鍧�
?
绛旓細
ROM
锛堢墖鍐?/p>
ROM
鍜岀墖澶?/p>
ROM
缁熶竴缂栧潃锛?/p>
锛堜娇鐢?/p>
MOVC
锛?/p>
锛堟暟鎹紶閫佹寚浠わ級
锛?/p>
16bits
鍦板潃锛夛紙
64KB
锛?/p>
鐗囧
RAM
锛?/p>
MOVX
锛夛紙
16bits
鍦板潃锛夛紙
64KB
锛?/p>
鐗囧唴
RAM
锛?/p>
MOV
锛夛紙
8bits
鍦板潃锛夛紙
256B
锛?/p>
4.
绠�杩?/p>
89C51
鐗囧唴
RAM
鐨勭┖闂村垎閰嶃�?/p>
绛旓細鐗囧唴
RAM
鏈?/p>
256B
浣?/p>
128B
鏄湡姝ｇ殑
RAM
鍖?/p>
楂?/p>
128B
鏄?/p>
SFR
锛堢壒娈婂姛鑳藉瘎瀛樺櫒锛夊尯
5.
绠�杩板竷灏斿鐞嗗瓨鍌ㄥ櫒鐨勭┖闂村垎閰嶏紝鐗囧唴
RAM
涓寘鍚摢浜涘彲浣嶅鍧�鍗曞厓銆?/p>
绛旓細鐗囧唴
RAM
鍖轰粠
00H~FFH
锛?/p>
256B
锛?/p>
鍏朵腑
20H~2FH
锛堝瓧鑺傚湴鍧�锛夋槸浣嶅鍧�鍖?/p>
瀵瑰簲鐨勪綅鍦板潃鏄?/p>
00H~7FH
6.
濡備綍绠�鎹峰湴鍒ゆ柇
89C51
姝ｅ湪宸ヤ綔
?
绛旓細鐢ㄧず娉㈠櫒瑙傚療
8051
鐨?/p>
XTAL2
绔槸鍚︽湁鑴夊啿淇″彿杈撳嚭锛堝垽鏂渿鑽＄數璺伐浣滄槸
鍚︽甯革紵锛?/p>
ALE
锛堝湴鍧�閿佸瓨鍏佽锛夛紙
Address Latch Enable
锛夎緭鍑烘槸
fosc
鐨?/p>
6
鍒嗛
鐢ㄧず娉㈠櫒瑙傚療
ALE
鏄惁鏈夎剦鍐茶緭鍑猴紙鍒ゆ柇
8051
鑺墖鐨勫ソ鍧忥紵锛?/p>
瑙傚療
PSEN
锛堝垽鏂?/p>
8051
鑳藉鍒?/p>
EPROM
鎴?/p>
ROM
涓鍙栨寚浠ょ爜锛燂級
鍥犱负
/PSEN
鎺ュ閮?/p>
EPROM
锛?/p>
ROM
锛夌殑
/OE
绔瓙
OE=Output Enable
锛堣緭鍑哄厑璁革級
7. 89C51
濡備綍纭畾鍜屾敼鍙樺綋鍓嶅伐浣滃瘎瀛樺櫒缁?/p>
?