S3C72Q5 Datasheet, PDF (285/330 Pages) Samsung semiconductor – 4-BIT CMOS MICROCONTROLLER

S3C72Q5/P72Q5
LCD CONTROLLER/DRIVER
When LCON1 is 4 or 5, LMOD.0 are set to "0" and pull-up enable by PUMOD0, RE and LE signal are
generated as below:
tCOM = 1.46 ms (t XT = 32.768 kHz)
COM
COM0 1
2
3
4
5
6
7
8
0
tF = 13.18 ms
Resistor Enable : RE
tRE = 1.5 t XT = 45.8 µs
tE
Input Latch Enable : LE
Valid Input Signals:
P0.0-P1.2
Latch Data
tSmax = 2.93 ms tSmin = 1.46 ms
tD
tLE = t XT/2 = t E = t D = 15.3 µs
> tSmax
Figure 12-5. RE, LE and Inputs Signal Waveform (1/9 Duty)
12-9