涓夋瀬绠＄粍鎴愮殑涓插彛鎺ュ彛鐢佃矾鍥?/p>
1
锛庝笁鏋佺缁勬垚鐨?/p>
RS232
涓插彛鎺ュ彛鐢佃矾鍥?/p>
鍏稿瀷鐨?/p>
RS-232
涓插彛鐨勪俊鍙峰湪姝ｈ礋鐢靛钩涔嬮棿鎽嗗姩锛屽湪鍙戦�佹暟鎹椂锛屽彂閫佺椹卞姩鍣ㄨ緭鍑烘鐢靛钩鍦?/p>
+5V
锝?/p>
+15V
锛?/p>
璐熺數骞冲湪
-5V
锝?/p>
-15V
锛?/p>
鑰屽崟鐗囨満涓茶鍙ｄ竴鑸负
TTL
鐢靛钩
(0V
锝?/p>
5V)
銆?/p>
涓や釜涓插彛涔嬮棿涓嶈兘绠�鍗曞湴鐩存帴鐢ㄧ數
绾胯繛鎺ャ�?/p>
瀹冨埄鐢?/p>
VD2
鍜?/p>
C1
浠?/p>
RS-232
鎺ュ彛鑾峰彇閫氫俊鎵�闇�鐨勮礋鐢垫簮锛岃兘寰堝ソ鍦板疄鐜颁袱涓帴鍙ｄ箣闂寸殑鐢靛钩杞崲鍜屾暟
鎹�氫俊锛岀粡绗旇�呭骞翠娇鐢ㄥ疄璺佃瘉鏄庨�氫俊鏁堟灉鍗佸垎浼樼锛岃�屼笖锛屽湪宸ヤ綔鐢靛帇涓?/p>
3.3V
鏃讹紝浠嶉潪甯哥ǔ瀹氥�?/p>
涓夋瀬绠＄粍鎴愮殑
RS232
涓插彛鎺ュ彛鐢佃矾
濡傛灉灏嗗浘涓數璺仛鎴愪竴鍧楀皬宸х殑鐢佃矾鏉匡紝鍗冲彲瑁呰繘
RS-232
鎻掑骇锛岀敤鍥涜姱绾跨紗灏?/p>
VCC
銆?/p>
TXD
銆?/p>
RXD
銆?/p>
GND
寮曞嚭锛屽嵆鍒舵垚浜嗕竴鏉￠�氱敤鐨勪覆琛屾暟鎹�氫俊绾裤�?/p>
闄勪袱绉嶇數璺細涓�绉嶇敤鍚屼竴涓笁鏋佺锛屽彟涓�绉嶅拰涓婇潰宸笉澶氬搱锛堜笉杩囩綉涓婃湁浜哄仛浜嗗垎鏋愶紝杩欑鐢佃矾瑕佺ǔ
瀹氫簺锛夛細
2
锛?/p>
Simple RS232C Level Converter using Transistors
There're
many,
who
built
the
Easy
Programmer
or
C-52
Evaluation
Board,
asking
for
the
RS232C
level converter chip, DS275. Many have changed to MAX232 instead, because of not available in