XRAM - From 89C51RC2 to AT89C51RD2

I have a running project with the micro 89C51RC2 I changed it to AT89C51RD2. The main difference is the XRAM on chip - 89C51RC2 has 1K (0x3FF) while the AT89C51RD2 has 1.79K (0x6FF) To be able to...
XRAM - From 89C51RC2 to AT89C51RD2

I have a running project with the micro 89C51RC2 I changed it to AT89C51RD2. The main difference is the XRAM on chip - 89C51RC2 has 1K (0x3FF) while the AT89C51RD2 has 1.79K (0x6FF) To be able to...
How to communicate At89c51rd2(Master) with At89c51rd2(Slave) using SPI protocol ?

Dear all, How to communicate At89c51rd2(Master) with At89c51rd2(Slave) using SPI protocol.I am using seperate pins for spi(not the dedicated pins of spi protocol).I am using 20 Mhz crystal for both...
How to communicate At89c51rd2(Master) with At89c51rd2(Slave) using SPI protocol ?

Dear all, How to communicate At89c51rd2(Master) with At89c51rd2(Slave) using SPI protocol.I am using seperate pins for spi(not the dedicated pins of spi protocol).I am using 20 Mhz crystal for both...
DIFFICULTY IN ACCESSING MCU XRAM

Hi! I'm using Philips P89v51RD2FBC microcontroller. I build my project using Keil version 2.0. After compilation, total memory utillization is: Data: 155.2, Xdata: 327, Const: 2062, Code: 23176 ...