EM78P468LAQ EMC [ELAN Microelectronics Corp], EM78P468LAQ Datasheet - Page 47

• Manufacturer Part Number: EM78P468LAQ
• Description: 8-BIT Microcontroller
• Manufacturer: EMC [ELAN Microelectronics Corp]

Product Specification (V1.0) 03.15.2006
(This specification is subject to change without further notice)
RD/SBPCR (System, Booster and PLL Control Registers)
Bit 2 ~ 1 (BF1 ~ 0): LCD booster frequency select bits
The initial setting flowchart for LCD function
Bit 7
--
BF1
*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)
0
0
1
1
Fig.16. The Initial Setting Flowchart for LCD Function
CLK2
Bit 6
CLK1
Bit 5
BF0
0
1
0
1
IC RESET occur
CLK0
Bit 4
END
Booster frequency
IDLE
Bit 3
Fs/16
Fs/4
Fs/8
Fs
Bit 2
BF1
8-BIT Microcontroller
Bit 1
BF0
EM78P468L
CPUS
Bit 0
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