參數(shù)資料
型號: M34554EDFP
元件分類: 微控制器/微處理器
英文描述: 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP64
封裝: 14 X 14 MM, 0.80 MM PITCH, PLASTIC, QFP-64
文件頁數(shù): 82/138頁
文件大?。?/td> 1082K
代理商: M34554EDFP
Rev.3.00
Aug 06, 2004
page 48 of 136
REJ03B0043-0300Z
4554 Group
Table 12 LCD control registers
Internal dividing resistor for LCD power
supply selection bit (Note 2)
LCD control bit
LCD control register L1
L13
L12
L11
L10
at reset : 00002
at power down : state retained
0
1
0
1
L11
0
1
L10
0
1
0
1
Duty
1/2
1/3
1/4
Bias
1/2
1/3
LCD control register L2
at reset : 00002
at power down : state retained
W
TL2A
0
1
0
1
0
1
0
1
SEG0
VLC3
SEG1
VLC2
SEG2
VLC1
Internal dividing resistor valid
Internal dividing resistor invalid
L23
L22
L21
L20
VLC3/SEG0 pin function switch bit (Note 3)
VLC2/SEG1 pin function switch bit (Note 4)
VLC1/SEG2 pin function switch bit (Note 4)
Internal dividing resistor for LCD power
supply control bit
2r 3, 2r 2
r 3, r 2
Off
On
Not available
R/W
TAL1/TL1A
LCD duty and bias selection bits
LCD control register L3
at reset : 00002
at power down : state retained
W
TL3A
0
1
0
1
0
1
0
1
SEG24–SEG27
P33–P30
SEG28, SEG29
P23, P22
SEG30
P21
SEG31
P20
L33
L32
L31
L30
SEG24/P33–SEG27/P30 pin function
switch bit
SEG28/P23, SEG29/P22 pin function
switch bit
SEG30/P21 pin function
switch bit
SEG31/P20 pin function
switch bit
Notes 1: “R” represents read enabled, and “W” represents write enabled.
2: “r (resistor) multiplied by 3” is used at 1/3 bias, and “r multiplied by 2” is used at 1/2 bias.
3: VLC3 is connected to VDD internally when SEG0 pin is selected.
4: Use internal dividing resistor when SEG1 and SEG2 pins are selected.
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