SM8521 datasheet(39/56 Pages) SHARP

39 / 56 page

SM8521

- 39 -

How to overturn a character in right and left.

4-dot data is transfered as a unit, from ROM to

VRAM or VRAM to VRAM. ROM is composed of 8

bits.

In case of "Increment x" is effective, 8-bit data is

transfered as shown below.

Bit 7

ROM

VRAM

dot3

dot2

dot1

dot0

Bit 7

dot3

dot2

dot1

dot0

ROM

VRAM

Bit 7

dot3

dot2

dot1

dot0

Bit 7

dot0

dot1

dot2

dot3

Position of all specified dots, maximun 256, is

overturned with right and left in horizontal. The

heart of their X coordinates becomes an axis of

symmetry.

On the other hand, in case of "Decrement x" is

effective, 8-bit data is transferred as shown below.

In each 4-dot data is automatically swapped in right

and left.

DMX17 DMX16 DMX15 DMX14 DMX13 DMX12 DMX11 DMX10

DMX1 (Source X-coordinate register)

DMY1 (Source Y-coordinate register)

DMDX (X-width register (X-width-1))

DMDY (Y-width register (Y-width-1))

DMX2 (Destination X-coordinate register)

DMY2 (Destination Y-coordinate register)

Bit 7

DMY27 DMY26 DMY25 DMY24 DMY23 DMY22 DMY21 DMY20

DMX27 DMX26 DMX25 DMX24 DMX23 DMX22 DMX21 DMX20

DMDY7 DMDY6 DMDY5 DMDY4 DMDY3 DMDY2 DMDY1 DMDY0

DMDX7 DMDX6 DMDX5 DMDX4 DMDX3 DMDX2 DMDX1 DMDX0

DMY17 DMY16 DMY15 DMY14 DMY13 DMY12 DMY11 DMY10

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