EM65571AGH EMC [ELAN Microelectronics Corp], EM65571AGH Datasheet - Page 31

• Manufacturer Part Number: EM65571AGH
• Description: 130COM / 128SEG 65K Color STN LCD Driver
• Manufacturer: EMC [ELAN Microelectronics Corp]

Product Specification (V1.0) 08.04.2005
(This specification is subject to change without further notice)
Y-address
Y-address
7.8 Display RAM Access Using Windows Function
The addresses, X-address and Y-address can be set up so that they can increment
automatically with the address control register. The increment is made every time the
display RAM is read from or written to in the MPU. In the Y-direction, 384 bits of data
are read out to the display data latch circuit by internal operation when the LP rises in a
one-line cycle. They are output from the display data latch circuit when the internal
signal LP fails. When internal FLM signals output in one frame cycle are at “H”, the
values in the display start line register are preset in the line counter and the line counter
counts up at the falling edge of the internal signal LP. The display line address counter
is synchronized with each timing signal of the LCD system to operate and is
independent of the address counters X and Y.
The EM65571 has a window area setting command for specified display RAM area
access. To use the window function, you need to set up two positions X and Y
addresses. You also need to set up the auto increment mode (AXI=”1”, AYI=”1”). Two
position means window start position and window end position. The window start
position’s X and Y-address set to normal the X-address (AX) and Y-address (AY)
7FH
7FH 16-bit
0H
0H
In Gradation Display Mode (C256=”0”, 65K=”1”, 65K colors)
8-bit Bus Size Access
16-bit Bus Size Access
16-bit
8-bit
8-bit
0H
0H
WLS=”0”
WLS=”1”
8-bit
8-bit
1H
---------------------------------------------------------------------
----------------------------------------------------------------- FEH FFH
130COM/128SEG 65K Color STN LCD Driver
X-address
X-address
8-bit 8-bit
8-bit 8-bit
EM65571
16-bit
16-bit
7FH
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