Datasheet

71M6513/71M6513H
3-Phase Energy Meter IC
DATA SHEET
AUGUST 2011
Page: 64 of 104 © 2005-2011 Teridian Semiconductor Corporation
A Maxim Integrated Products Brand
Name
Location
[Bit(s)]
Dir Description
LCD_NUM[4:0] 2020[4:0] R/W Number of dual-
purpose LCD/DIO pins to be configured as LCD. This
number can be between 0 and 18. The first dual-purpose pin to be used as
LCD is SEG41/DIO21. If LCD_NUM
= 2, SEG41 and SEG 40 will be
configured
as LCD. The remaining SEG39 to SEG24 will be configured as
DIO19 to DIO4.
LCD_NUM
SEG
DIO
0
None
DIO4-21
1
SEG41
DIO4-20
2
SEG40-41
DIO4-19
3
SEG39-41
DIO4-18
4
SEG38-41
DIO4-17
5
SEG37-41
DIO4-16
6
SEG36-41
DIO4-15
7
SEG35-41
DIO4-14
8
SEG34-41
DIO4-13
9
SEG33-41
DIO4-12
10
SEG32-41
DIO4-11
11
SEG31-41
DIO4-10
12
SEG30-41
DIO4-9
13
SEG29-41
DIO4-8
14
SEG28-41
DIO4-7
15
SEG27-41
DIO4-6
16
SEG26-41
DIO4-5
17
SEG25-41
DIO4
18
SEG24-41
None
LCD_SEG0[3:0]
…
LCD_SEG41[3:0]
2030[3:0]
…
2059[3:0]
R/W LCD Segment Data. Each word contains information for from 1 to 4 time
divisions of each segment. In each word, bit 0 corresponds to COM0, on up
to bit 3 for COM3.
MPU_DIV[2:0] 2004[2:0] R/W The MPU clock divider (from CKCE). These bits may be programmed by
the MPU without risk of losing control.
000 - CKCE, 001 - CKCE/2, …, 111 - CKCE/2
7
MPU_DIV is 000 on power-up.
MUX_ALT 2005[2] R/W The MPU asserts this bit when it wishes the MUX to perform ADC
conversions on an alternate set of inputs.
MUX_DIV[1:0] 2002[7:6] R/W The number of states in the input multiplexer.
00 - 6 states 01 - 4 states 10 - 3 states 11 - 2 states
MUX_E
2005[0]
R/W
MUX_SYNC enable. When high, converts SEG7 into a MUX_SYNC output.
OPT_TXDIS
2008[5] R/W Tristates the OPT_TX output.
PREBOOT
SFR B2[7] R Indicates that the preboot sequence is active.