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M38B57MC Fiches technique(PDF) 39 Page - Mitsubishi Electric Semiconductor |
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M38B57MC Fiches technique(HTML) 39 Page - Mitsubishi Electric Semiconductor |
39 / 69 page MITSUBISHI MICROCOMPUTERS 38B5 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER 39 PRELIMINAR Y Notice: This is not a final specification. Some parametric limits are subject to change. FLD automatic display RAM The FLD automatic display RAM uses the 160 bytes of addresses 0F6016 to 0FFF16. For FLD, the 3 modes of 16-timing ordinary mode, 16-timing•gradation display mode and 32-timing mode are available depending on the number of timings and the presence/absence of gradation display. The automatic display RAM in each mode is as follows: (1) 16-timing•Ordinary Mode The 80 bytes of addresses 0FB016 to 0FFF16 are used as a FLD display data store area. Because addresses 0F6016 to 0FAF16 are not used as the automatic display RAM, they can be the ordi- nary RAM or serial I/O automatic reverse RAM. (2) 16-timing•Gradation Display Mode The 160 bytes of addresses 0F6016 to 0FFF16 are used. The 80 bytes of addresses 0FB016 to 0FFF16 are used as an FLD dis- play data store area, while the 80 bytes of addresses 0F6016 to 0FAF16 are used as a gradation display control data store area. (3) 32-timing Mode The 160 bytes of addresses 0F6016 to 0FFF16 are used as an FLD display data store area. [FLD Data Pointer and FLD Data Pointer Reload Register] FLDDP (0EF816) Both the FLD data pointer and FLD data pointer reload register are 8-bit registers assigned at address 0EF816. When writing data to this address, the data is written to the FLD data pointer reload register; when reading data from this address, the value in the FLD data pointer is read. Fig. 42 FLD Automatic Display RAM Assignment 16-timing•ordinary mode 0FFF16 0FB016 0F6016 0FFF16 0F6016 0FFF16 0FB016 0F6016 16-timing•gradation display mode 32-timing mode 1 to 32 timing display data stored area Gradation display control data stored area 1 to 16 timing display data stored area 1 to 16 timing display data stored area Not used |
Numéro de pièce similaire - M38B57MC |
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Description similaire - M38B57MC |
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