參數(shù)資料
型號: M3455AG8FP
元件分類: 微控制器/微處理器
英文描述: 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP52
封裝: 10 X 10 MM, 0.65 MM PITCH, PLASTIC, LQFP-52
文件頁數(shù): 131/150頁
文件大小: 1818K
代理商: M3455AG8FP
Rev.1.02
Nov 26, 2008
Page 79 of 146
REJ03B0224-0102
455A Group
Note 1. ”R” represents read enabled, and “W” represents write enabled.
Note 2. “r (resistor) multiplied by 3” is used at 1/3 bias, and “r multiplied by 2” is used at 1/2 bias.
Note 3. VLC3 is connected to VDD internally when SEG0 pin is selected.
Note 4. Use internal dividing resistor when SEG1 and SEG2 pins are selected.
Timer control register W5
at reset : 00002
at power down : state retained
R/W
TAW5/TW5A
W53 Not used
0
This bit has no function, but read/write is enabled.
1
This bit has no function, but read/write is enabled.
W52 Not used
0
This bit has no function, but read/write is enabled.
1
This bit has no function, but read/write is enabled.
W51
Timer 3 count source selection bits
W51 W52
Count source
00
XCIN input
W50
01
ORCLK input
10
Low-speed on-chip oscillator
11
High-speed on-chip oscillator
LCD control register L1
at reset : 00002
at power down : state retained
R/W
TAL1/TL1A
L13
Internal dividing resistor for LCD power
supply selection bit (Note 2)
0
2r × 3, 2r × 2
1
r × 3, r × 2
L12
LCD control bit
0
Stop (OFF)
1
Operating
LCD duty and bias selection bits
L11
L1
Duty
Bias
L11
0
Not available
01
1/2
10
1/3
L10
11
1/4
1/3
LCD control register L2
at reset : 00002
at power down : state retained
W
TL2A
L23
SEG0/VLC3 pin function switch bit (Note 3)
0
SEG0
1VLC3
L22
SEG1/VLC2 pin function switch bit (Note 4)
0
SEG1
1VLC2
L21
SEG2/VLC1 pin function switch bit (Note 4)
0
SEG2
1VLC1
L20
Internal dividing resistor for LCD power
supply control bit
0
Internal dividing resistor valid
1
Internal dividing resistor invalid
LCD control register L3
at reset : 11112
at power down : state retained
W
TL3A
L33
P23/SEG27 pin function switch bit
0
SEG27
1P23
L32
P22/SEG26 pin function switch bit
0
SEG26
1P22
L31
P21/SEG25 pin function switch bit
0
SEG25
1P21
L30
P20/SEG24 pin function switch bit
0
SEG24
1P20
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