ST7669V
7.9 FREQUENCY TEMPERATURE GRADIENT COMPENSATION COEFFICIENT
7.9.1 REGISTER LOADING DETECTION
ST7669V will auto-switch frame rate on different temperature such as Figure 7.3-7. TA, TB and TC are frame rate
switching temperatures which can be defined by customer with command TMPRNG. FA, FB, FC and FD are switched
frame rate which also can be defined by customer with command FRMSEL. The frame rate range is from 18.75Hz to
170Hz.
When the temperature is in increasing state, frame rate changes to the higher step at TA/TB/TC+TH(℃). When the
temperature is in decreasing state, frame rate changes to the lower step at TA/TB/TC. For example: TC=10℃ and TH=5℃,
FC switches to FD at 15℃ but FD switches to FC at 10℃. Please take Figure 7.3-7 for reference.
Figure 7.3-7
Ver 1.3
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6/4/2008
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
