EM78P468L Datasheet, PDF (47/83 Pages) ELAN Microelectronics Corp – 8-BIT Microcontroller

EM78P468L
8-BIT Microcontroller
RD/SBPCR (System, Booster and PLL Control Registers)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
--
CLK2 CLK1 CLK0 IDLE
BF1
BF0
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
Bit 0
CPUS
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.16. The Initial Setting Flowchart for LCD Function
Product Specification (V1.0) 03.15.2006
(This specification is subject to change without further notice)
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