EM78P468LAQ EMC [ELAN Microelectronics Corp], EM78P468LAQ Datasheet - Page 20

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

EM78P468L
8-BIT Microcontroller
16 •
4.1.12
4.1.13
Bit 4~0 (LCDA4 ~ LCDA0): LCD RAM address
Bit 7 ~ 4 : Not used
Bit 3~0 (LCD_D3 ~ LCD_D0) : LCD RAM data transfer register
Bit 7,5 : Not used, must fixed to “0”
Bit 6,4 : Not used
Bit 3(LPWTEN): low pulse width timer enable bit,
Bit 2(HPWTEN) : high pulse width timer enable bit
Bit 1(CNT2EN) : counter 2 enable bit
Bit 0(CNT1EN) : counter 1 enable bit
(LCD address) Bit 7 ~4
Bit 7
Bit 7
Common
--
--
1DH
1EH
LPWTEN = “0” : Disable LPWT. Count operation stop.
LPWTEN = “1” : Enable LPWT. Count operation start.
HPWTEN = “0” : Disable HPWT. Count operation stop.
HPWTEN = “1” : Enable HPWT. Count operation start.
CNT2EN = “0” : Disable Counter 2. Count operation stop.
CNT2EN = “1” : Enable Counter 2. Count operation start.
CNT1EN = “0” : Disable Counter 1. Count operation stop.
00H
01H
02H
1FH
RA
(Address: 0Bh)
(Address: 0Ch)
RB/LCD_DB (LCD Data Buffer)
RC/CNTER (Counter Enable Register)
|
Bit 6
Bit 6
--
--
--
--
--
--
--
--
X
Bit 5
Bit 5
--
--
(LCD_D3)
COM3
Bit 3
RB (LCD data buffer)
Bit 4
Bit 4
--
--
(This specification is subject to change without further notice)
(LCD_D2)
COM2
Bit 2
|
LPWTEN HPWTEN CNT2EN CNT1EN
LCD_D3 LCD_D2 LCD_D1 LCD_D0
Bit 3
Bit 3
Product Specification (V1.0) 03.15.2006
(LCD_D1)
COM1
Bit 1
Bit 2
Bit 2
(LCD_D0)
COM0
Bit 0
Bit 1
Bit 1
Segment
SEG29
SEG30
SEG31
SEG0
SEG1
SEG2
Bit 0
Bit 0
|