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參數(shù)資料
| 型號(hào)： | EM78P468N |
| 廠(chǎng)商： | ELAN Microelctronics Corp . |
| 元件分類(lèi)： | 8位微控制器 |
| 英文描述： | 8-BIT MICROCONTROLLER |
| 中文描述： | 8位微控制器 |
| 文件頁(yè)數(shù)： | 23/82頁(yè) |
| 文件大?。?/td> | 1491K |
| 代理商： | EM78P468N |
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EM78P468N
8-BIT Microcontroller
Product Specification
(V1.2) 03.15.2005
(This specification is subject to change without further notice)
19
4.2 Sp
4.2.1
Regis
of I
age
C5
CF
0 o
= “
4.2.2
5
d
7,
C
ecial Purpose Registers
A (Accumulator)
Internal data transfer, or instruction operand holding
This is not an addressable register.
ters
OC P
0 (IO
0 ~ IO
0, Bit
f R5
0”)
IOC 0/P5CR (PORT I/O an PORT
Control Register)
(Address: 05h, Bit 0 of R5 = “0”)
Bit 7
Bit 6
Bit 5
8 for L D Segm nt
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
IOC57
IOC56
IOC55
IOC54
P8HS
P8LS
P7HS
P7LS
Bit
4(IOC57~54):
PORT 5 I/O direction control register
OC5x = “0”:
set the relative P5.x I/O pins a
7~
x
et
ive
p
igh
nc
pi
t output as share
t output as share pins
SEGx
= ”0
ct low nibble of PORT 8 as normal
”:
sele
P8LS = ”1”:
select LCD SEGMENT output as SEG 24~SEG 27 output
7HS):
Switch to high
Bit 1(P
pins SEGxx/P7.x pins
f PORT 7 or to LCD segment output as share
nibble I/O o
.7
SEG
tput
B
SEGxx/P7.x pins
L
ns
rmal P7.0~P7.3
G 19 output
4.2.3
C60
ddr
R (
06h
6
0 of
ntr
“0
gis
I
s output
IOC5 = “1”:
s
the relat
P5.x I/O in into h
impeda
e (input n)
Bit 3(P8HS):
Switch to high nibble I/O of PORT 8 or to LCD segmen
pins SEGxx/P8.x pins
P8HS = “0”:
select high nibble of PORT 8 as normal P8.4~P8.7
P8HS = “1”:
select LCD SEGMENT output as SEG 28~SEG 31 output
Bit 2(P8LS):
Switch to low nibble I/O of PORT 8 or to LCD segmen
x/P8.x pins
P8LS
P8.0~P8.3
P7HS = “0”:
select high nibble of PORT 7 as normal P7.4~P7
P7HS = “1”:
select LCD SEGMENT output as
20~SEG 23 ou
it 0(P7LS):
Switch to low nibbl I/O of PORT 7 or to CD segment output as share pi
P7LS = ”0”:
select low nibble of PORT 7 as no
P7LS = “1”:
select LCD SEGMENT output as SEG 16~SE
IO
(A
/P6C
ess:
Bit 6
PORT
, Bit
Bit 5
I/O Co
R5 =
Bit 4
ol Re
”)
Bit 3
ter)
Bit 7
Bit 2
Bit 1
Bit 0
IOC67
IOC66
IOC65
IOC64
IOC63
IOC62
IOC61
IOC60
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