參數(shù)資料
型號: EM78569
廠商: ELAN Microelctronics Corp .
英文描述: 8-BIT MICRO-CONTROLLER
中文描述: 8位微控制器
文件頁數(shù): 30/53頁
文件大小: 461K
代理商: EM78569
EM78569
8-bit Micro-controller
__________________________________________________________________________________________________________________________________________________________________
* This specification is subject to be changed without notice.
8/31/2004 (V4.0)
IOC5 (PORT5 I/O control, LCD bias control)
PAGE0 (LCD bias control bits)
7
6
IOC57
IOC56
IOC55
R/W-1
R/W-1
R/W-1
Bit 0 ~ Bit 3 (BIAS0 ~ BIAS3) : LCD operation voltage selection. V1 = VDD * (1 - n/60)
BIAS3
BIAS2
BIAS1
BIAS0
0
0
0
0
0
0
0
1
0
0
1
0
0
0
1
1
0
1
0
0
:
:
:
:
1
1
0
1
1
1
1
0
1
1
1
1
5
4
-
3
2
1
0
BIAS3
R/W-0
BIAS2
R/W-0
BIAS1
R/W-0
BIAS0
R/W-0
Vop (=VDD-VLCD)
VDD * (1-0/60)
VDD * (1-1/60)
VDD * (1-2/60)
VDD * (1-3/60)
VDD * (1-4/60)
:
VDD * (1-13/60)
VDD * (1-14/60)
VDD * (1-15/60)
Example (VDD = 3V)
3V
2.95V
2.90V
2.85V
2.80V
:
2.35V
2.30V
2.25V
Bit 4 : unused
Bit 5 ~ Bit 7 (IOC55 ~ IOC57) : PORT5(5~7) I/O direction control register
0
put the relative I/O pin as output
1
put the relative I/O pin into high impedance
Fig.10 LCD driver bias circuit
MUX
R15
R14
R13
R1
4
BIAS3 to BIAS0
1111
1110
0000
1100
0001
V1
V2
VDD
VLCD
R
R
R
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