• rfreader
    #include<reg51.h> void boud_rate() { SCON = 0x50; TMOD = 0x20; /* timer 1, mode 2, 8-bit reload */ TH1 = 0xFD; /* reload value for 2400 baud */ TR1 = 1; TI = 1; } char serial_receive() { char chr;...
  • AT89S52 Write lock sequence
    I'm designing an ISP programmer for AT89S52. I have completed Erase,Write & verify successfully but I'm stuck with programming the lock bits. I want to achieve write lock mode 2. I'm sending the...
  • SECURITY LOCK BITS >> LB2
    Hello, We are using Philips 89C52X2BN Micro controller with external 128K EPROM with Code Banking, We keep very little code in micro controller with jump instruction to external eprom. Recently...
  • uVision2 locks after start
    uVision2 hangs directly after start. The main frame as well as the logo appears on the screen, but then the application is locked forever. I use Win NT 4.0 SP 6. This happens only when I am logged...
  • Read lock in C8051f120
    I am using C8051f120 MCU. I want to put a read lock in so that no one can read the code memory using JTAG interface. I checked the flash Utility in UVision but found there is no option to set the read...