EM65570
68COM/ 98SEG 65K Color STN LCD Driver
7.5 Fast Burst RAM Write Function
The EM65570 has a built-in fast burst RAM write function. This function allows data
transfer of 32 bits thus requiring only half of the access time needed for common
standard RAM write function (16-bit data bus). The burst RAM write function is suitable
for frequent data rewriting such as color animation display.
Microcontroller
databus[0:15]
EM65570
Internal Buffer1
Internal buffer2
databus[0:31]
.......
0x00H 0x01H 0x02H 0x03H
2 bytes
2 bytes
Display RAM
Figure 7-7 Fast Burst RAM Write Operation
NOTE
Fast Burst RAM Write Function works more efficiently in horizontal RAM data writing
mode, that is, RDWS[2]=0
Product Specification (V1.0) 09.05.2005
(This specification is subject to change without further notice)
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ELAN [ ELAN MICROELECTRONICS CORP ]
