71m6543h-igtr/f Maxim Integrated Products, Inc., 71m6543h-igtr/f Datasheet - Page 64

• Manufacturer Part Number: 71m6543h-igtr/f
• Description: Energy Meter Ic
• Manufacturer: Maxim Integrated Products, Inc.

SEG46 through SEG50 cannot be configured as DIO pins. Display data for these pins are written to I/O
RAM registers LCD_SEG46[5:0] through LCD_SEG50[5:0] (see
71M6543F/H Data Sheet
The LCD bias may be compensated for temperature using the LCD_DAC[4:0] field (I/O RAM 0x240D[4:0]).
The bias may be adjusted from 1.4 V below the 3.3 V supply (V3P3SYS in MSN mode and VBAT in BRN
and LCD modes). When the LCD_DAC[4:0] field is set to 000, the DAC is bypassed and powered
down. This setting can be used to reduce current in LCD mode.
The LCD_MAP[47:46] (I/O RAM 0x2406[7:6]) bits are used to determine whether SEG46 and SEG47 are
SEG pins or their alternate function (see pins 93 and 92 in
then the pins are configured as SEG pins. If the LCD_MAP[47:46] bits are 0, then the pins are configured
as their alternate functions (TMUX2OUT and TMUXOUT, respectively).
64
STATIC (LCD_MODE=100)
1/3 BIAS, 3 STATES (LCD_MODE = 011 )
SEG_OFF
SEG_OFF
SEG_ON
SEG_ON
COM0
COM1
COM2
COM3
COM4
COM5
COM0
COM1
COM2
COM3
COM4
COM5
Configuration:
SEG Data
Register
SEGDIO
Pin #
0
Table 54: LCD Data Registers for SEGDIO46 to SEGDIO55
(1/2)
(1/2)
(1/2)
(1/2)
(1/2)
1
2
© 2008–2011 Teridian Semiconductor Corporation
(2/3)
(1/3)
46
93
1/2 BIAS, 2 STATES (LCD_MODE = 010 )
1/3 BIAS, 4 STATES (LCD_MODE = 000 )
Always LCD pins
Figure 17: LCD Waveforms
47
92
SEG_OFF
SEG_OFF
SEG_ON
SEG_ON
COM0
COM1
COM2
COM3
COM4
COM5
COM0
COM1
COM2
COM3
COM4
COM5
48
58
0
T
0
49
57
1
1
(1/2)
(1/2)
(1/2)
(1/2)
2
50
56
Figure
3
Table
51
53
46). If the LCD_MAP[47:46] bits are 1,
1/2 BIAS, 3 STATES (LCD_MODE = 011 )
54).
SEG_OFF
SEG_OFF
52
52
SEG_ON
SEG_ON
See
1/3 BIAS, 6 STATES (LCD_MODE = 110 )
COM0
COM1
COM2
COM3
COM4
COM5
COM0
COM1
COM2
COM3
COM4
COM5
2.5.10.2
53
51
0
0
54
47
1
1
2
2
55
46
(1/2)
(1/2)
(1/2)
3
4
5
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