参数资料
型号: 71M6543F-IGT/F
厂商: Maxim Integrated Products
文件页数: 108/154页
文件大小: 0K
描述: IC ENERGY METERING
标准包装: 90
系列: *
71M6543F/71M6543G Data Sheet
Name
Location Rst Wk Dir
Description
LCD_DAC[4:0]
240D[4:0]
0
R/W
The LCD contrast DAC. This DAC controls the VLCD voltage and has an output range of
2.65 V to 5.3 V. The VLCD voltage is
VLCD = 2.65 + 2.65 * LCD_DAC[4:0]/ 31
Thus, the LSB of the DAC is 85.5 mV. The maximum DAC output voltage is limited by
V3P3SYS, VBAT, and whether LCD_BSTE = 1.
LCD_E
LCD_MAP[55:48]
LCD_MAP[47:40]
LCD_MAP[39:32]
LCD_MAP[31:24]
LCD_MAP[23:16]
LCD_MAP[15:8]
LCD_MAP[7:0]
2400[7]
2405[7:0]
2406[7:0]
2407[7:0]
2408[7:0]
2409[7:0]
240A[7:0]
240B[7:0]
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Enables the LCD display. When disabled, VLC2, VLC1, and VLC0 are ground as are
the COM and SEG outputs if their LCD_MAP bit is 1.
Enables LCD segment driver mode of combined SEGDIO pins. Pins that cannot be
configured as outputs (SEG48 through SEG50) become inputs with internal pull ups
when their LCD_MAP bit is zero. Also, note that SEG48 through SEG50 are multiplexed
with the in-circuit emulator signals. When the ICE_E pin is high, the ICE interface is
enabled, and SEG48 through SEG50 become E_RXTX, E_TCLK and E_RST,
respectively.
Selects the LCD bias and multiplex mode.
LCD_MODE
000
001
Output
4 states, 1/3 bias
3 states, 1/3 bias
LCD_MODE[2:0]
2400[6:4]
0
R/W
010
2 states, 1/2 bias
011
100
101
110
3 states, 1/2 bias
Static display
5 states, 1/3 bias
6 states, 1/3 bias
LCD_ON
LCD_BLANK
LCD_ONLY
LCD_RST
LCD_SEG0[5:0]
to
LCD_SEG15[5:0]
LCD_SEGDIO16[5:0]
to
LCD_SEGDIO45[5:0]
240C[0]
240C[1]
28B2[6]
240C[2]
2410[5:0] to
241F[5:0]
2420[5:0] to
243D[5:0]
0
0
0
0
0
0
0
R/W
R/W
W
R/W
R/W
R/W
Turns on or off all LCD segments without changing LCD data. If both bits are set, the
LCD display is turned on.
Puts the 71M6543 to sleep, but with LCD display still active. Ignored if system power is
present. It awakens when the Wake Timer times out, when certain DIO pins are raised,
or when system power returns (see 3.2 Battery Modes ).
Clear all bits of LCD data. These bits affect SEGDIO pins that are configured as LCD
drivers. This bit does not auto clear.
SEG Data for SEG0 through SEG15. DIO data for these pins is in SFR space.
SEG and DIO data for SEGDIO16 through SEGDIO45. If configured as DIO, bit 1 is
direction (1 is output, 0 is input), bit 0 is data, and the other bits are ignored.
108
v2
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