XC68HC705F32 Motorola, XC68HC705F32 Datasheet - Page 92

• Manufacturer Part Number: XC68HC705F32
• Description: MICROCONTROLLER
• Manufacturer: Motorola

8
FDISP — Display frequency
For example, in the 3-way multiplexing mode, a frame rate of 36.8 Hz instead of 72.8 Hz can be
achieved.
MUX4, MUX3 — Multiplex ratio
These two bits select the multiplex ratio to be 2, 3 or 4 backplanes. See
EXTVON — External LCD voltage ON/OFF
Clearing this bit disconnects the voltage generator resistor chain from the external V
Table
8.5
The LCD drivers function normally during WAIT mode and will keep the display active if the
EXTVON bit or the INTVLCD bit is set.
8.6
During STOP mode the LCD controller is disabled. The driver outputs are discharged by the
resistor chain.
MOTOROLA
8-10
8-2.
1 (set)
0 (clear) –
1 (set)
0 (clear) –
LCD during WAIT mode
LCD during STOP mode
–
–
Extra divide by two stage is included in the LCD clock generator
when this bit is set, giving a reduced frame rate.
Default frame rate is used.
External LCD voltage is connected.
External LCD voltage is disconnected.
LIQUID CRYSTAL DISPLAY DRIVER MODULE
MUX4
Table 8-4 Multiplex ratio/backplane selection
0
0
1
1
MUX3
0
1
0
1
Backplanes
2
3
4
2
Bias
1/2
1/3
1/3
1/3
Frequency
54.6 Hz
72.8 Hz
54.6 Hz
54.6 Hz
Table
8-4.
MC68HC05F32
LCD
. See
TPG