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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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UPD750064CU Scheda tecnica(PDF) 18 Page - NEC |
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UPD750064CU Scheda tecnica(HTML) 18 Page - NEC |
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18 / 82 page  18 µPD750064, 750066, 750068, 750064(A), 750066(A), 750068(A) Data Sheet U10165EJ2V0DS00 5. MEMORY CONFIGURATION Program memory (ROM) .... 4096 × 8 bits ( µPD750064) .... 6144 × 8 bits ( µPD750066) .... 8192 × 8 bits ( µPD750068) • Addresses 0000H and 0001H Vector table wherein the program start address and the values set for the RBE and MBE at the time a RESET signal is generated are written. Reset start is possible from any address. • Addresses 0002H to 000DH Vector table wherein the program start address and the values set for the RBE and MBE by each vectored interrupt are written. Interrupt processing can start from any address. • Addresses 0020H to 007FH Table area referenced by the GETI instructionNote. Note The GETI instruction realizes a 1-byte instruction on behalf of any 2-byte instruction, 3-byte instruction, or two 1-byte instructions. It is used to decrease the number of program steps. Data memory (RAM) • Data area .... 512 words × 4 bits (000H to 1FFH) • Peripheral hardware area .... 128 words × 4 bits (F80H to FFFH) |
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