AT89C51
鍗曠墖鏈轰腑鏂囪祫鏂?/p>
AT89C51
鏄竴绉嶅甫
4K
瀛楄妭闂儊鍙紪绋嬪彲鎿﹂櫎鍙瀛樺偍鍣?/p>
(FPEROM
鈥?/p>
Falsh Programmable and
Erasable Read Only Memory)
鐨勪綆鐢靛帇锛岄珮鎬ц兘
CMOS8
浣嶅井澶勭悊鍣紝淇楃О鍗曠墖鏈恒�?/p>
2.
绠¤剼璇存槑锛?/p>
VCC
锛氫緵鐢电數鍘嬨�?/p>
GND
锛氭帴鍦般�?/p>
P0
鍙ｏ細
P0
鍙ｄ负涓�涓?/p>
8
浣嶆紡绾у紑璺弻鍚?/p>
I/O
鍙ｏ紝姣忚剼鍙惛鏀?/p>
8TTL
闂ㄧ數娴併�傚綋
P1
鍙ｇ殑绠¤剼绗?/p>
涓�娆″啓
1
鏃讹紝琚畾涔変负楂橀樆杈撳叆銆?/p>
P0
鑳藉鐢ㄤ簬澶栭儴绋嬪簭鏁版嵁瀛樺偍鍣紝瀹冨彲浠ヨ瀹氫箟涓烘暟鎹?/p>
/
鍦板潃鐨勭鍏綅銆傚湪
FIASH
缂栫▼鏃讹紝
P0
鍙ｄ綔涓哄師鐮佽緭鍏ュ彛锛屽綋
FIASH
杩涜鏍￠獙鏃讹紝
P0
杈撳嚭鍘?/p>
鐮侊紝姝ゆ椂
P0
澶栭儴蹇呴』琚媺楂樸�?/p>
P1
鍙ｏ細
P1
鍙ｆ槸涓�涓唴閮ㄦ彁渚涗笂鎷夌數闃荤殑
8
浣嶅弻鍚?/p>
I/O
鍙ｏ紝
P1
鍙ｇ紦鍐插櫒鑳芥帴鏀惰緭鍑?/p>
4TTL
闂?/p>
鐢垫祦銆?/p>
P1
鍙ｇ鑴氬啓鍏?/p>
1
鍚庯紝琚唴閮ㄤ笂鎷変负楂橈紝鍙敤浣滆緭鍏ワ紝
P1
鍙ｈ澶栭儴涓嬫媺涓轰綆鐢靛钩鏃讹紝
灏嗚緭鍑虹數娴侊紝杩欐槸鐢变簬鍐呴儴涓婃媺鐨勭紭鏁呫�傚湪
FLASH
缂栫▼鍜屾牎楠屾椂锛?/p>
P1
鍙ｄ綔涓虹鍏綅鍦板潃鎺?/p>
鏀躲�?/p>
P2
鍙ｏ細
P2
鍙ｄ负涓�涓唴閮ㄤ笂鎷夌數闃荤殑
8
浣嶅弻鍚?/p>
I/O
鍙ｏ紝
P2
鍙ｇ紦鍐插櫒鍙帴鏀讹紝杈撳嚭
4
涓?/p>
TTL
闂?/p>
鐢垫祦锛?/p>
褰?/p>
P2
鍙ｈ鍐?/p>
鈥?/p>
1
鈥?/p>
鏃讹紝
鍏剁鑴氳鍐呴儴涓婃媺鐢甸樆鎷夐珮锛?/p>
涓斾綔涓鸿緭鍏ャ�?/p>
骞跺洜姝や綔涓鸿緭鍏ユ椂锛?/p>
P2
鍙ｇ殑绠¤剼琚閮ㄦ媺浣庯紝灏嗚緭鍑虹數娴併�傝繖鏄敱浜庡唴閮ㄤ笂鎷夌殑缂樻晠銆?/p>
P2
鍙ｅ綋鐢ㄤ簬澶栭儴绋嬪簭瀛?/p>
鍌ㄥ櫒鎴?/p>
16
浣嶅湴鍧�澶栭儴鏁版嵁瀛樺偍鍣ㄨ繘琛屽瓨鍙栨椂锛?/p>
P2
鍙ｈ緭鍑哄湴鍧�鐨勯珮鍏綅銆傚湪缁欏嚭鍦板潃鈥?/p>
1
鈥?/p>
鏃讹紝瀹冨埄鐢ㄥ唴閮ㄤ笂鎷変紭鍔匡紝褰撳澶栭儴鍏綅鍦板潃鏁版嵁瀛樺偍鍣ㄨ繘琛岃鍐欐椂锛?/p>
P2
鍙ｈ緭鍑哄叾鐗规畩鍔?/p>
鑳藉瘎瀛樺櫒鐨勫唴瀹广�?/p>
P2
鍙ｅ湪
FLASH
缂栫▼鍜屾牎楠屾椂鎺ユ敹楂樺叓浣嶅湴鍧�淇″彿鍜屾帶鍒朵俊鍙枫�?/p>
P3
鍙ｏ細
P3
鍙ｇ鑴氭槸
8
涓甫鍐呴儴涓婃媺鐢甸樆鐨勫弻鍚?/p>
I/O
鍙ｏ紝鍙帴鏀惰緭鍑?/p>
4
涓?/p>
TTL
闂ㄧ數娴併�傚綋
P3
鍙ｅ啓鍏モ�?/p>
1
鈥濆悗锛屽畠浠鍐呴儴涓婃媺涓洪珮鐢靛钩锛屽苟鐢ㄤ綔杈撳叆銆備綔涓鸿緭鍏ワ紝鐢变簬澶栭儴涓嬫媺涓轰綆鐢?/p>
骞筹紝
P3
鍙ｅ皢杈撳嚭鐢垫祦
(ILL)
杩欐槸鐢变簬涓婃媺鐨勭紭鏁呫�?/p>
P3
鍙ｄ篃鍙綔涓?/p>
AT89C51
鐨勪竴浜涚壒娈婂姛鑳藉彛锛屽涓嬭〃鎵�绀猴細
鍙ｇ鑴?/p>
澶囬�夊姛鑳?/p>
P3.0 RXD(
涓茶杈撳叆鍙?/p>
)
P3.1 TXD(
涓茶杈撳嚭鍙?/p>
)
P3.2 /INT0(
澶栭儴涓柇
0)
P3.3 /INT1(
澶栭儴涓柇
1)
P3.4 T0(
璁版椂鍣?/p>
0
澶栭儴杈撳叆
)