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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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UPD161622 Datenblatt(PDF) 15 Page - NEC |
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UPD161622 Datenblatt(HTML) 15 Page - NEC |
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15 / 103 page  Data Sheet S15649EJ2V0DS 15 µ PD161622 Moreover, when using the parallel interface, it is possible to use the BMD flag (D7 of the data access control register (R5) to select the length of the data to be transmitted as either 16 bits (BMD = 0) or 8 bits (BMD = 1). This setting is valid for the display data written as DR data to the display memory register (R12). The relationship between the command input and the data bus length is as follows. ⋅ Commands other than those of the display memory register (R12) are executed in 1-byte units regardless of the value of BMD (bus length setting flag in data access control register (R5)). ⋅ Display memory register (R12) commands are executed in 1-byte units when BMD = 1, and in 1-word units when BMD = 0. (1) Commands other than those of the display memory register (R12) BMD = 1 (8-bit data bus) Pin D7 D6 D5 D4 D3 D2 D1 D0 Data D7 D6 D5 D4 D3 D2 D1 D0 BMD = 0 (16-bit data bus) Pin D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Data Note Note Note Note Note Note Note Note D7 D6 D5 D4 D3 D2 D1 D0 Note 0 or 1 (2) Display memory register (R12) BMD = 1 (8-bit data bus) Pin D7 D6 D5 D4 D3 D2 D1 D0 Data D7 D6 D5 D4 D3 D2 D1 D0 BMD = 0 (16-bit data bus) Pin D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Data D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 |
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