19-18 MC68VZ328 User’s Manual
AC Electrical Characteristics
Figure 19-14. LCD Controller Timing Diagram (Self-Refresh Mode)
Table 19-15. LCD Controller Timing Parameters
Number Characteristic (3.0 ± 0.3)V Unit
Minimum Maximum
1 Line pulse to frame signal (4* pixclk)- 2 —ns
2 Line pulse width (4* pixclk)- 2 ns
3 LCLK to data valid -2 2 ns
4 Shift clock to line pulse (2 *pixclk) -2 (2* pixclk)+ 2 ns
Note:
The preceding data is measured by summing the polarity bits LFLM, LLP, and LCLK in the POLCF register.
The variable pixclk= LCD_CLK/ (pcd+ 1).
The self-refresh mode timing between LFRM, LSCLK, LD, and LLP are the same as in normal mode.
The self-refresh mode is entered and exited on the positive edge of LFRM.
In self-refresh mode, the LFRM and LLP waveforms are identical to the waveforms in normal mode, while LD and
LCLK remain in inactive level.
LFLM
LD[7:0]
LLP
LCLK
LREF
Self-Refresh Mode