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ADE7569 데이터시트(PDF) 96 Page - Analog Devices

부품명 ADE7569
상세설명  Single-Phase Energy Measurement IC with 8052 MCU, RTC and LCD driver
PDF  148 Pages
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 96 / 148 page
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ADE75xx/ADE71xx
Preliminary Technical Data
Rev. PrE | Page 96 of 148
Table 80. LCD frame rate selection for fLCDCLK=128Hz (LCDCON[3]=1)
2x multiplexing
3x multiplexing
4x multiplexing
FD3
FD2
FD1
FD0
fLCD(Hz)
Frame Rate (Hz)
Frame Rate (Hz)
Frame Rate (Hz)
1
1
1
1
128
64
42.7
32
0
0
0
0
64
32
21.3
16
0
0
0
1
32
16
10.7
8
0
0
1
0
21.3
10.6
10.7
8
0
0
1
1
16
8
10.7
8
: Boxes shaded in grey are not within the range of typical LCD frame rates
Table 81. LCD Segment Enable SFR (LCDSEGE, 0x97)
Bit
Location
Bit
Mnemonic
Default
Value
Description
FP25 Function Select bit
0
General Purpose I/O
7
FP25EN
0
1
LCD Function
FP24 Function Select bit
0
General Purpose I/O
6
FP24EN
0
1
LCD Function
FP23 Function Select bit
0
General Purpose I/O
5
FP23EN
0
1
LCD Function
FP22 Function Select bit
0
General Purpose I/O
4
FP22EN
0
1
LCD Function
FP21 Function Select bit
0
General Purpose I/O
3
FP21EN
0
1
LCD Function
FP20 Function Select bit
0
General Purpose I/O
2
FP20EN
0
1
LCD Function
Delay before powerdown?
FDELAY[1:0]
0
0
No timeout
0
1 2 cycles
1
0 4 cycles
1-0
FDELAY
0
1
1 8 cycles
Table 82. LCD Pointer SFR (LCDPTR, 0xAC)
Bit
Location
Bit
Mnemonic
Default
Value
Description



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