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PD780133 Datasheet(PDF) 49 Page - NEC |
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PD780133 Datasheet(HTML) 49 Page - NEC |
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49 / 558 page  User’s Manual U16228EJ2V0UD 49 CHAPTER 3 CPU ARCHITECTURE 3.1 Memory Space Products in the 78K0/KE1 can each access a 64 KB memory space. Figures 3-1 to 3-8 show the memory maps. Caution Regardless of the internal memory capacity, the initial values of the internal memory size switching register (IMS) and internal expansion RAM size switching register (IXS) of all products in the 78K0/KE1 are fixed (IMS = CFH, IXS = 0CH). Therefore, set the value corresponding to each product as indicated below. Table 3-1. Set Values of Internal Memory Size Switching Register (IMS) and Internal Expansion RAM Size Switching Register (IXS) IMS IXS µPD780131 42H µPD780132 44H µPD780133 C6H µPD780134 C8H 0CH µPD78F0134Note Value corresponding to mask ROM version µPD780136 CCH µPD780138 CFH 0AH µPD78F0138 Value corresponding to mask ROM version Note The µPD78F0134 does not support the µPD780136 and 780138. |
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