EM78468
8-BIT Microcontroller
RA/LCD_ADDR (LCD Address)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
0
0
LCD_A4 LCD_A3 LCD_A2 LCD_A1 LCD_A0
Bit 7 ~ 5: Not used, fixed to “0”
Bit 4 ~ 0 (LCDA4 ~ LCDA0): LCD RAM address
RB (LCD data buffer)
RA
Segment
Bit 3
Bit 2
Bit 1
Bit 0
(LCD address)
Bit 7 ~4
(LCD_D3) (LCD_D2) (LCD_D1) (LCD_D0)
00H
01H
02H
--
--
--
SEG0
SEG1
SEG2
|
|
|
1DH
1EH
1FH
--
--
--
X
SEG29
SEG30
SEG31
Common
COM3
COM2
COM1
COM0
RB/LCD_DB (LCD Data Buffer)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
--
--
--
--
LCD_D 3 LCD_D 2 LCD_D 1 LCD_D 0
Bit 7 ~ 4: Not used
Bit 3 ~ 0 (LCD_D3 ~ LCD_D0): LCD RAM data transfer registers
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
1
1
0
1
Fs/4
Fs/8
Fs/16
Product Specification (V1.1) 04.11.2005
• 43
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
