EM78P468NBQ EMC [ELAN Microelectronics Corp], EM78P468NBQ Datasheet - Page 19

• Manufacturer Part Number: EM78P468NBQ
• Description: 8-BIT Microcontroller
• Manufacturer: EMC [ELAN Microelectronics Corp]

Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
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,
Bit 6,4
Bit 3(LPWTEN): low pulse width timer enable b
Bit 2(HPWTEN) : high pulse width timer enable b
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
5 : No
LPWTEN = “0” : Disa
LPWTEN = “1” : Enable LPWT. Count operation start.
HPWTEN = “0” : Disable HPWT.
HPWTEN = “1” : Enable HPWT. C
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: 0Ch)
RB/LC _DB (L
RC/CNTER (Counter Enable Register)
Addre
|
: N
ot used
t used, must fixed to “0”
Bit 6
Bit 6
ss
D
--
--
: 0Bh)
--
--
--
--
--
--
X
Bit 5
Bit 5
CD
--
--
(LCD_D3)
ble L
COM3
Bit 3
Data Bu
RB (LCD data buffer)
PWT. Count operation stop.
Bit 4
Bit 4
--
--
(LCD_D2)
Count operation stop.
C
Bit 2
ount operation start.
ffer)
OM2
|
LPWTEN HPWTEN CNT2EN CNT1EN
LCD_D3 LCD_D2 LCD_D1 LCD_D0
Bit 3
Bit 3
it,
(LCD_D1)
it
COM1
Bit 1
Bit 2
Bit 2
(LCD_D0)
CO
Bit 0
8-BIT Microcontroller
M0
Bit 1
Bit 1
EM78P468N
Segment
SEG29
SE
SE
SEG0
SEG1
SEG2
G30
G31
Bit 0
Bit 0
|
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