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SM8521 Datasheet(PDF) 34 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) 34 Page - Sharp Corporation

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SM8521
- 34 -
VRAM Configulation
VRAM configulation is shown below.
VRAM, maximum 16 k bytes (160 x 200-dot x 2-
phase or 200 x 160-dot x 2-plane), can be
accessed. LCD diaplays a phase specified.
Address of VRAM0 and VRAM1 is A000H-BFFFH
and C000H-DFFFH respectively.
DMA transfers rectangle display data, in arbitrary
size specified in ROM and external RAM, to
VRAM.
NOTE :
Do not write data directly to VRAM while transferring data to
LCD driver (MSB of LCC register is 1 and V-blank flag is 0).
Fig. 16
VRAM Configuration
dot 3
dot 2
dot 1
dot 0
0
1
0123
2
3
4
5
6
Bit 7
4-dot/byte
160/200-dot
VRAM
160-dot
× 200-dot × 2-plane = 16 k-byte
160/200-dot
dot data = 00 color 0
01 color 1
10 color 2
11 color 3



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