Filter
Top Products
EM78P468N/EM78P468L
8-Bit Microcontroller
Product Specification (V1.5) 02.15.2007
• 37
(This specification is subject to change without further notice)
6.9.4 RD/SBPCR (System, Booster and PLL Control Registers)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
−
CLK2 CLK1 CLK0 IDLE BF1 BF0 CPUS
Bit 2 ~ 1 (BF1 ~ 0): LCD booster frequency select bits
BF1 BF0 Booster Frequency
0 0 Fs
0 1 Fs/4
1 0 Fs/8
1 1 Fs/16
The initial setting flowchart for LCD function
IC RESET occur
*Set Port 7 snd Port 8 for general I/O or LCD segment (IOC50)
*it must be set to output port w hen the pin of port 7 and the pin of port 8 for LCD
segemnt (IOC70 and IOC80)
Set LCD Type, duty, bias, LCD frame frequency (R9)
Set LCD Booster Frequency (RD)
Clear all LCD RAM (RA and RB)
Enable LCD function (R9)
Use LCD address and LCD data buffer to implment user's applications. (RA and RB)
END
Fig.6-14 The Initial Setting Flowchart for LCD Function