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UPD784938 Datasheet(PDF) 68 Page - NEC |
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UPD784938 Datasheet(HTML) 68 Page - NEC |
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68 / 733 page  68 CHAPTER 3 CPU ARCHITECTURE Preliminary User’s Manual U13987EJ1V0UM00 (1) When LOCATION 0 instruction is executed • Internal memory The internal data area and internal ROM area are follows: Part Number Internal Data Area Internal ROM Area µPD784935 0EB00H to 0FFFFH 00000H to 0EAFFH 10000H to 17FFFH µPD784936 0E500H to 0FFFFH 00000H to 0E4FFH 10000H to 1FFFFH µPD784937 0DF00H to 0FFFFH 00000H to 0DEFFH 10000H to 2FFFFH µPD784938 0D600H to 0FFFFH 00000H to 0D5FFH µPD78F4938 10000H to 3FFFFH Caution The following areas of the internal ROM that overlap the internal data area cannot be used when the LOCATION 0 instruction is executed. Part Number Area That Cannot Be Used µPD784935 0EB00H to 0FFFFH (5,376 bytes) µPD784936 0E500H to 0FFFFH (6,192 bytes) µPD784937 0DF00H to 0FFFFH (8,448 bytes) µPD784938 0D600H to 0FFFFH (10,752 bytes) µPD78F4938 • External memory The external memory is accessed in the external memory expansion mode. (2) When LOCATION 0FH instruction is executed • Internal memory The internal data area and internal ROM area are follows: Part Number Internal Data Area Internal ROM Area µPD784935 FEB00H to FFFFFH 00000H to 17FFFH µPD784936 FE500H to FFFFFH 00000H to 1FFFFH µPD784937 FDF00H to FFFFFH 00000H to 2FFFFH µPD784938 FD600H to FFFFFH 00000H to 3FFFFH µPD78F4938 • External memory The external memory is accessed in the external memory expansion mode. |
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