ST7628
Example 2: MPU Write is Slower than Panel Read
MCUꢀto
Memory
th
1st
70
time
TEꢀOutput
Signal
Memoryꢀto
LCD
th
1st
70
time
ImageꢀonꢀLCD
a
b
c
d
e
f
The MPU to Frame Memory write begins just after Panel Read has commenced i.e. after one horizontal sync pulse of the
Tearing Effect Output Line. This allows time for the image to download behind the Panel Read pointer and finishing
download during the subsequent Frame before the Read Pointer “catches” the MPU to Frame memory write position.
Ver 1.4
41/213
2008/08