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SM8521 Datasheet(PDF) 33 Page - Sharp Corporation

Part # SM8521
Description  8-Bit Single-Chip Microcomputer
PDF  56 Pages
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Manufacturer  SHARP [Sharp Corporation]
Direct Link  http://sharp-world.com/
Logo SHARP - Sharp Corporation

SM8521 Datasheet(HTML) 33 Page - Sharp Corporation

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SM8521
- 33 -
LCDC/DMA
The SM8521 supports LCD controller (LCDC) to
control LCD pannel, in a kind of dot matrix, which
is required external LCD drivers.
LCDC transfers display data in the external VRAM
to the LCD driver. The SM8521 supports a DMA,
which can transfer the data at the High speed,
between ROM and VRAM, VRAM and VRAM, and
external RAM and VRAM, without through the
CPU.
DMA transfers display data in the ROM and
external RAM to VRAM.
Source/destination register
ROM address generator
VRAM address generator
Internal
bus
VRAM
Timing
generator
Data composition
circuit
Shift register
External address bus
Interrupt (CPU)
LCD driver
External data bus
Fig. 15
LCD/DMA Block Diagram



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