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PICAXE Memory

PICAXE Memory. Three Types. Program RAM Data. Program Memory. Stores the program as a series of commands Executed one command at a time Permanent, will remember for 10 years without power Accessed with the PICAXE Editor The program doesn’t normally store data here. Random Access Memory.

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PICAXE Memory

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  1. PICAXE Memory

  2. Three Types • Program • RAM • Data

  3. Program Memory • Stores the program as a series of commands • Executed one command at a time • Permanent, will remember for 10 years without power • Accessed with the PICAXE Editor • The program doesn’t normally store data here

  4. Random Access Memory • Divided into bytes (B0 to B27) • Each byte is 8 bits wide (each stores up to 255) • Can be accessed in different sizes • Accessed by the program • Battery operated, lose power – lose data • Used for math and to access the outside world

  5. Data • 256 bytes of memory for storing data • Each byte has an address, 0 - 255 • Permanent, will remember for ten years without power • Accessed by the program

  6. Accessing RAM • If B1 = 2 • B2 = 2 • B3 = “a” • READADC C.1,B4

  7. Accessing Data • WRITE 12,200 • WRITE B0,201 • WRITE “A”,202 • READ 200,B0

  8. PICAXE Memory Map

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