doc.txt

单片机编程的一款好软件

:03 0000 00  02 00 30                                            CB
:10 0030 00  75 80 FF 75 90 06 75 A0 FF 75 B0 FF 75 20 00 75     7F
:10 0040 00  70 00 53 87 7F 75 98 70 75 89 21 75 8B FA 75 8D     4F
:10 0050 00  FA 75 A8 00 D2 8E 78 00 7F 00 D2 D5 30 98 FD 75     51
:10 0060 00  83 00 75 82 00 C2 D5 C2 98 E5 99 B4 05 02 01 8B     60
:10 0070 00  B4 15 02 01 B7 B4 06 02 01 90 B4 16 02 01 BC B4     73
:10 0080 00  07 02 21 2C B4 17 02 21 52 01 30 75 7D 10 01 93     13
:10 0090 00  75 7D 20 85 82 90 85 83 A0 11 A7 E5 80 31 A5 E5     37
:10 00A0 00  7D B5 83 EF 02 00 30 C2 A7 D2 B6 D2 B7 D2 B3 D2     A9
:10 00B0 00  B5 D2 B2 75 80 FF 22 75 7D 10 01 BF 75 7D 20 31     EC
:10 00C0 00  0C 31 AE 79 30 D2 A7 D2 B5 C2 B2 85 82 90 85 83     89
:10 00D0 00  A0 E7 F5 80 D2 B3 C2 A6 D2 B6 D2 B7 C2 B3 31 C5     BB
:10 00E0 00  D2 B3 D2 B5 D2 B2 C2 A7 85 FF 80 85 80 F0 A3 09     72
:10 00F0 00  B9 40 D2 E5 7D B5 83 C9 02 00 30 D2 B3 C2 A6 D2     E1
:10 0100 00  A7 D2 B6 D2 B7 D2 B5 C2 B2 C2 B3 22 D2 B3 D2 A6     A8
:10 0110 00  C2 A7 C2 B6 C2 B7 D2 B5 C2 B2 C2 B3 31 C5 D2 B3     9A
:10 0120 00  22 C2 B5 D2 B2 C2 A6 31 C5 D2 B5 22 31 21 31 40     E8
:10 0130 00  E5 80 31 A5 D2 A6 C2 A6 E5 83 B4 08 F1 02 00 30     5D
:10 0140 00  D2 B5 D2 B2 D2 A2 C2 A3 C2 A4 D2 A5 D2 A0 75 80     87
:10 0150 00  FF 22 31 21 31 90 31 AE 79 30 31 7F E7 F5 80 31     A6
:10 0160 00  C5 75 80 FF D2 A2 31 40 85 80 F0 B5 F0 EC D2 A6     F3
:10 0170 00  C2 A6 A3 09 B9 40 E3 E5 83 B4 08 DA 02 00 30 D2     8D
:10 0180 00  B5 C2 B2 D2 A2 C2 A2 C2 A3 D2 A4 D2 A5 D2 A0 22     88
:10 0190 00  D2 B5 C2 B2 D2 A2 C2 A2 D2 A3 C2 A4 C2 A5 C2 A0     E8
:10 01A0 00  31 C5 D2 A2 22 F5 99 30 99 FD C2 99 A3 22 75 99     41
:08 01B0 00  5A 30 99 FD C2 99 79 30                             23
:10 01B8 00  30 98 FD C2 98 E5 99 F7 09 B9 40 F4 22 7A 30 7B     66
:07 01C8 00  81 00 DB FD DA F9 22                                E2
:00 0000 01  FF
------------------------------------------------------------------
89s51 89s52 program mode Vcc=5V RST=H  psen=L  
    mode       EA/vpp	ALE   p2.6  p2.7 p3.3 p3.6 p3.7
write code	12v    ~\/~   L     H	  H    H    H
read code	 H      H     L     L	  L    H    H
lock bit-1	12v    ~\/~   H     H	  H    H    H
lock bit-2	12v    ~\/~   H     H	  H    L    L
lock bit-3	12v    ~\/~   H     L	  H    H    L
 erase	        12v    ~\/~   H     L	  H    L    L
note:P3.0 is pulled low during programming to indicate -BUSY


89s53 89s8252 program mode  RST=H  psen=L 
    mode       EA/vpp	ALE   p2.6  p2.7  p3.6  p3.7
write code	12v    ~\/~   L     H	  H     H
read code	 H      H     L     L	  H     H 
lock bit-1	12v    ~\/~   H     L	  H     L  P0.7=0
lock bit-2	12v    ~\/~   "     "	  "     "  P0.6=0
lock bit-3	12v    ~\/~   "     "     "     "  P0.5=0
 erase	        12v    ~\/~   H     L	  L     L
read signature	 H      H     L     L	  L     L
note:P3.4 is pulled low during programming to indicate -BUSY


89c51 89c52 program mode  rst=H  psen=L 
    mode       EA/vpp	ALE   p2.6  p2.7  p3.6  p3.7
               P32=0    P33   P26   P27   P36   P37
write code	12v    ~\/~   L     H	  H     H
read code	 H      H     L     L	  H     H
lock bit-1	12v    ~\/~   H     H	  H     H
lock bit-2	12v    ~\/~   H     H	  L     L
lock bit-3	12v    ~\/~   H     L	  H     L
 erase	        12v    ~\/~   H     L	  L     L
read signature	 H      H     L     L	  L     L
note:P3.4 is pulled low during programming to indicate -BUSY


89c2051 89c4051 program mode
  mode	        RST   p3.2  p3.3  p3.4	p3.5 p3.7
                P32   P22   P23	  P24	P25  P26
write code	12v   ~\/~   L     H     H    H
read code	 H     H     L	   L     H    H
lock bit-1	12v   ~\/~   H	   H     H    H
lock bit-2	12v   ~\/~   H	   H     L    L
   erase	12v   ~\/~   H	   L     L    L
read signature	 H     H     L	   L     L    L
note: 1.The intermal PEROM address counter is reset to 000H on the rising 
        edge of RST and is advanced by positive pules at XTAL1 pin.
      2.Chip Erase requires a 10 ms -PROG pules to p3.2.
      3.p3.1 is pulled low during programming to indicate RDY/-BUSY

**************************************************************************
89S51比89C51增加了看门狗。向看门狗寄存器0A6H先写01EH，再写0E1H,激活。
14位计数器,在16383个机器周期内喂狗一次。晶振12M时每16个毫秒需喂狗一次。
Org 0000 
Ljmp begin
Begin:
Mov 0A6H,#01EH ;先送1E
Mov 0A6H,#0E1H ;后送E1
……
For:
……
Mov 0A6H,#01EH ;先送1E
Mov 0A6H,#0E1H ;后送E1   ;喂狗指令
……
Ljmp for

Atmel公司已经停产AT89C51，将用AT89S51/2代替。原因是成本问题，89S51在工艺上进行了改进，
采用0.35新工艺，成本降低,功能提升：
*工作频率为33MHz, *具有双工UART串行通道, *看门狗计时器, *双数据指示器, *电源关闭标识。