1
锛?/p>
璁＄畻鏈轰綋绯荤粨鏋勶細鍝堜經缁撴瀯銆佸啹璇轰緷鏇肩粨鏋勭殑鍖哄埆锛?/p>
鍝堜經缁撴瀯
RAM
鍜?/p>
ROM
鍒嗗埆缂栧潃锛屽啹璇轰緷鏇肩粨鏋?/p>
RAM
鍜?/p>
ROM
缁熶竴缂栧潃
2
锛?/p>
MSC
锛?/p>
51
鍗曠墖鏈哄閮ㄥ紩鑴氱殑鍚嶇О鏄粈涔堬紵鍚勬湁浠�涔堝姛鑳斤紵
绛旓細
(1)
鐢垫簮鍙婃櫠鎸紩鑴?/p>
VCC(40
鑴?/p>
)
锛?/p>
+5V
鐢垫簮寮曡剼
VSS(20
鑴?/p>
)
锛?/p>
鎺ュ湴寮曡剼
XTAL1(19
鑴?/p>
)
锛涘鎺ユ櫠鎸紩鑴氾紙鍐呯疆鏀惧ぇ鍣ㄨ緭鍏ョ锛?/p>
XTAL2(18
鑴?/p>
)
锛氬鎺ユ櫠鎸紩鑴氾紙鍐呯疆鏀惧ぇ鍣ㄨ緭鍑虹锛?/p>
(2)
鎺у埗寮曡剼
RST/V
PD
(9)
涓哄浣?/p>
/
澶囩敤鐢垫簮寮曡剼
ALE/PROG(30)
涓哄湴鍧�閿佸瓨浣胯兘杈撳嚭
/
缂栫▼鑴夊啿杈撳叆
PSEN(29)
锛氳緭鍑鸿闂墖澶栫▼搴忓瓨鍌ㄥ櫒璇婚�夐�氫俊鍙?/p>
EA/ VPP (31)
锛氬閮?/p>
ROM
鍏佽璁块棶
/
缂栫▼鐢垫簮杈撳叆
(3)
骞惰
I/O
鍙ｅ紩鑴?/p>
P0.0
锝?/p>
P0.7
锛?/p>
39
锝?/p>
32
鑴氾級鈥斺�?/p>
P0
鍙ｏ紱
P1.0
锝?/p>
P1.7
锛?/p>
1
锝?/p>
8
鑴氾級鈥斺�?/p>
P1
鍙ｏ紱
P2.0
锝?/p>
P2.7
锛?/p>
21
锝?/p>
28
鑴氾級鈥斺�?/p>
P2
鍙ｏ紱
P3.0
锝?/p>
P3.7
锛?/p>
10
锝?/p>
17
鑴氾級鈥斺�?/p>
P3
鍙ｃ�?/p>
3. AT89C51
鍗曠墖鏈虹殑鐗囧唴璧勬簮鏈夊摢浜涳紵鍏跺瓨鍌ㄥ櫒缁撴瀯濡備綍锛熺墖鍐?/p>
RAM
鍙垎鎴愬摢涓笁涓尯锛熷悇鍖虹殑鍦板潃鑼冨洿
濡備綍锛?/p>
鍏跺唴閮ㄥ姛鑳介儴浠舵湁锛?/p>
鎺у埗鍣細鏄鍙栬嚜绋嬪簭瀛樺偍鍣ㄤ腑鐨勬寚浠よ繘琛岃瘧鐮侊紝鍦ㄨ瀹氱殑鏃跺埢鍙戝嚭鍚勭鎿嶄綔鎵�闇�鐨勬帶鍒朵俊鍙凤紝瀹屾垚鎸囦护
鎵�瑙勫畾鐨勫姛鑳斤紱
杩愮畻鍣細鏍规嵁鎺у埗鍣ㄥ彂鏉ョ殑淇″彿锛屾墽琛岀畻鏈�昏緫杩愮畻鎿嶄綔锛?/p>
瀛樺偍鍣細鍖呮嫭绋嬪簭瀛樺偍鍜屾暟鎹瓨鍌ㄥ櫒锛?/p>
瀹氭椂鍣ㄨ鏁板櫒锛?/p>
2
涓?/p>
16
浣嶅畾鏃跺櫒
/
璁℃暟鍣紝鍙鏈哄櫒鍛ㄦ湡璁℃暟锛屼篃鍙澶栭儴杈撳叆鑴夊啿璁℃暟锛?/p>
涓柇绯荤粺锛氬彲鍝嶅簲涓変釜鍐呴儴涓柇婧愬拰涓や釜澶栭儴涓柇婧愮殑涓柇璇锋眰锛?/p>
杈撳叆杈撳嚭鎺ュ彛锛?/p>
4
涓?/p>
8
浣嶅苟琛屽彛鍜屼竴涓叏鍙屽伐涓茶鍙ｏ紱
鍏跺瓨鍌ㄥ櫒缁撴瀯灞炰簬鍝堜經缁撴瀯锛?/p>
MCS-51
鍙鍧�绌洪棿鏄袱涓?/p>
64KB
锛?/p>
鍗?/p>
64KB
鐨勭▼搴忓瓨鍌ㄧ┖闂村拰
64KB
鐨勬暟鎹瓨鍌?/p>
绌洪棿銆?/p>
鐗囧唴
RAM
鍙垎鎴?/p>
鍒掑垎涓轰笁涓儴鍒嗭細
鈶?/p>
浣滃瘎瀛樺櫒鍖猴紙
00H-1FH
锛?/p>
锛屽洓缁勨憽鍙綅瀵诲潃鍖猴紙
20H-2FH
锛夆憿鐢ㄦ埛
RAM
鍖猴紙
30H-7FH
锛?/p>
锛?/p>
80B
7
锛庣▼搴忕姸鎬佸瓧瀵勫瓨鍣?/p>
PSW
鍚勪綅鐨勫畾涔夋槸浠�涔堬紵
绛旓細绋嬪簭鐘舵�佸瓧瀵勫瓨鍣?/p>
PSW
鍚勪綅鐨勫畾涔夊涓嬶細
PSW.7
锛氳繘
/
鍊熶綅鏍囧織
CY
锛屽姞娉曟湁杩涗綅鏃剁疆
1
锛屽噺娉曟湁鍊熶綅鏃剁疆
1
锛?/p>
PSW.6
锛氳緟鍔╄繘浣嶆爣蹇?/p>
AC
锛屽姞娉曡繍绠椾綆鍥涗綅鍚戦珮涓婂洓浣嶆湁杩涗綅鏃剁疆
1
锛?/p>
PSW.5
銆?/p>
PSW.1
锛氱敤鎴锋爣蹇椾綅
F0
鍜岀敤鎴锋爣蹇椾綅
F1
锛?/p>
淇濆瓨鐢ㄦ埛鐨勪綅鏁版嵁锛?/p>
PSW.4
銆?/p>
PSW.3
锛氬伐浣滃瘎瀛樺櫒閫夋嫨鎺у埗浣?/p>
RS1
鍜?/p>
RS0
锛?/p>
00
鑷?/p>
11
鍒嗗埆閫夋嫨鍥涚粍宸ヤ綔涔嬩竴浣滀负褰撳墠宸ヤ綔瀵勫瓨鍣?/p>
PSW.2
锛氭孩鍑烘爣蹇椾綅
OV
锛屾湁绗﹀彿鏁板姞銆佸噺杩愮畻缁撴灉鏈夋孩鍑烘垨涔橀櫎涓婄粨鏋滃紓甯?/p>
(
涔樻硶杩愮畻缁撴灉澶т簬
255
鍗充箻
绉湪
BA
涓紝鎴栭櫎娉曡繍绠楅櫎鏁颁负
0)
鏃剁疆
1
RS
P
C
A
F
RS
O
F
CY
AC
F0
RS1
RS0
OV
F1
PSW.7
PSW.6
PSW.5
PSW.4
PSW.3
PSW.2
PSW.1
PSW.0