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71M6511/71M6511H
Single-Phase Energy Meter IC
A Maxim Integrated Products Brand
DATA SHEET
NOVEMBER 2010
I/O RAM (Configuration RAM) – Alphabetical Order
Many functions of the chip can be controlled via the I/O RAM (Configuration RAM). The CE will also take some of its para-
meters from the I/O RAM.
Bits with a W (write) direction are written by the MPU into I/O RAM. Typically, they are initially stored in flash memory and
copied to the I/O RAM by the MPU. Some of the more frequently programmed bits are mapped to the MPU SFR memory
space. The remaining bits are mapped to 2xxx. Bits with R (read) direction can only be read by the MPU. On power up, all
bits are cleared to zero unless otherwise stated. Generic SFR registers are not listed.
Name
Location
Dir
Description
[Bit(s)]
ADC_DIS
CE_EN
CHOP_EN[1:0]
2005[3]
2000[4]
2002[5:4]
R/W
R/W
R/W
Disables ADC and removes bias current
CE enable.
Chop enable for the reference band gap circuit.
00: enabled 01: disabled 10: disabled 11: enabled
RESERVED
CKOUT_DIS
RESERVED
RESERVED
DIO_R4[2:0]
DIO_R5[2:0]
DIO_R6[2:0]
DIO_R7[2:0]
2004[5]
2004[4]
2003[4:3]
2003[2:0]
200B[2:0]
200B[6:4]
200C[2:0]
200C[6:4]
R/W
R/W
R/W
R
R/W
R/W
R/W
R/W
Must be 0.
CKOUT Disable. When zero, CKTEST is an active output.
Must be 0.
Reserved
Connects dedicated I/O pins 4 to 11 to selectable internal resources. If
more than one input is connected to the same resource, the ‘Multiple’
column below specifies how they are combined. See Software User’s
Guide for details).
DIO_R8[2:0]
DIO_R9[2:0]
DIO_R10[2:0]
DIO_R11[2:0]
200D[2:0]
200D[6:4]
200E[2:0]
200E[6:4]
R/W
R/W
R/W
R/W
DIO_GP
0
1
Resource
NONE
Reserved
Multiple
--
OR
2
3
4
5
6
7
T0 (counter0 clock)
T1 (counter1 clock)
High priority I/O interrupt (int0 rising)
Low priority I/O interrupt (int1 rising)
High priority I/O interrupt (int0 falling)
Low priority I/O interrupt (int1 falling)
OR
OR
OR
OR
OR
OR
DIO_DIR0[7:4]
SFR A2
R/W
Programs the direction of DIO pins 7 through 4. 1 indicates output.
Ignored if the pin is not configured as I/O. See DIO_PV and DIO_PW
for special option for DIO6 and DIO7 outputs. See DIO_EEX for special
option for DIO4 and DIO5.
Note: Bit 0, Bit 1, Bit 2 and Bit 3 must be set to 1.
Page: 59 of 98
? 2005–2010 Teridian Semiconductor Corporation
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