ZHCSA85F August 2012 – February 2019 DLPC410
LOAD4 functionality is primarily intended to be used with Global Resets. However, It is possible to use a subset of the DMD array including Block Resets. The driving software/hardware MUST ensure that the average “Reset” (MCP) rate does not exceed an average rate of 50,000 MCPs/sec as this is the specification limit of the DLPA200 Micromirror Driver device (see . The driving software/hardware MUST also ensure that the “Mirror Settling Time” is not violated for any Block.
Average rate means averaged over 2-3 Load/Clear cycles. For example if a pattern is loaded and displayed with a Mirror Clocking Pulse followed by a Block Clear and a Mirror Clocking Pulse the “on” display time is very short. However, If the next pattern is loaded and displayed immediately, the average MCP rate may be exceeded, depending on the DMD and the number of Blocks in use. Therefore idle time must be added in the Load or Block Clear cycle to ensure an average MCP rate of 50,000 MCPs/sec or lower. Typically the smallest pattern display time is desired so that the time is added during the Load cycle rather than the Block Clear cycle so that the “off” time is extended, not the pattern display time.