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how to use 256 Bytes on-chip RAM of 89c51rd2bn

hello,
i am using 89c51rd2BN from philips,i want to store 100 bytes of data as buffers,presently i am storing it in the RAM,however if the 128 byte RAM exceeds,what do i do,in datasheet of 89c51rd2 it says that 89c51rd2 has 256 Bytes on-chip RAM,and 768 Bytes on-chip XRAM,please let me know how do i use or access this memory.

regards,
nafis

Parents
  • I am using 89c51rd2BN from philips,i want to store 100 bytes of data as buffers,presently i am storing it in the RAM,however if the 128 byte RAM exceeds,what do i do,in datasheet of 89c51rd2 it says that 89c51rd2 has 256 Bytes on-chip RAM,and 768 Bytes on-chip XRAM,please let me know how do i use or access this memory.

    Time for manual study

    read up on DATA IDATA and XDATA

    I suggest you read a whole lot more, since this question indicates that you have read basically nothing.

    Erik

Reply
  • I am using 89c51rd2BN from philips,i want to store 100 bytes of data as buffers,presently i am storing it in the RAM,however if the 128 byte RAM exceeds,what do i do,in datasheet of 89c51rd2 it says that 89c51rd2 has 256 Bytes on-chip RAM,and 768 Bytes on-chip XRAM,please let me know how do i use or access this memory.

    Time for manual study

    read up on DATA IDATA and XDATA

    I suggest you read a whole lot more, since this question indicates that you have read basically nothing.

    Erik

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