71M6541D Datasheet, PDF (112/166 Pages) Maxim Integrated Products – 0.1% Accuracy Over 2000:1 Current Range Energy Meter ICs

71M6541D/F/G and 71M6542F/G Data Sheet
Name
CHOPR[1:0]
DIFFA_E
DIFFB_E
DIO_R2[2:0]
DIO_R3[2:0]
DIO_R4[2:0]
DIO_R5[2:0]
DIO_R6[2:0]
DIO_R7[2:0]
DIO_R8[2:0]
DIO_R9[2:0]
DIO_R10[2:0]
DIO_R11[2:0]
DIO_RPB[2:0]
DIO_DIR[15:12]
DIO_DIR[11:8]
DIO_DIR[7:4]
DIO_DIR[3:0]
DIO[15:12]
DIO[11:8]
DIO[7:4]
DIO[3:0]
DIO_EEX[1:0]
Location
Rst Wk Dir Description
2709[7:6]
210C[4]
210C[5]
2455[2:0]
2455[6:4]
2454[2:0]
2454[6:4]
2453[2:0]
2453[6:4]
2452[2:0]
2452[6:4]
2451[2:0]
2451[6:4]
2450[2:0]
The CHOP settings for the remote sensor.
00 = Auto chop. Change every MUX frame.
00 00 R/W 01 = Positive
10 = Negative
11 = Auto chop. Same as 00.
0 0 R/W Enables differential configuration for the IA current input (IAP-IAN).
0 0 R/W Enables differential configuration for the IB current input (IBP-IBN).
0
Connects PB and dedicated I/O pins DIO2 through DIO11 to internal resources.
0
If more than one input is connected to the same resource, the MULTIPLE
0
column below specifies how they are combined.
0
DIO_Rx Resource
MULTIPLE
0
0 NONE
–
0 – R/W
1 Reserved
OR
0
0
2 T0 (Timer0 clock or gate)
OR
0
3 T1 (Timer1 clock or gate)
OR
0
4 IO interrupt (int0)
OR
0
5 IO interrupt (int1)
OR
SFR B0[7:4]
SFR A0[7:4]
SFR 90[7:4]
SFR 80[7:4]
Programs the direction of the first 16 DIO pins. 1 indicates output. Ignored if
the pin is not configured as I/O. See DIO_PV and DIO_PW for special option
F F R/W for the SEGDIO0 and SEGDIO1 outputs. See DIO_EEX for special option for
SEGDIO2 and SEGDIO3. Note that the direction of DIO pins above 15 is set by
SEGDIOx[1]. See PORT_E to avoid power-up spikes.
SFR B0[3:0]
SFR A0[3:0] SFR 90[3:0] F
SFR 80[3:0]
F
The value on the first 16 DIO pins. Pins configured as LCD reads zero.
R/W
When written, changes data on pins configured as outputs. Pins configured
as LCD or input ignore writes. Note that the data for DIO pins above 15 is
set by SEGDIOx[0].
When set, converts pins SEGDIO3/SEGDIO2 to interface with external
EEPROM. SEGDIO2 becomes SDCK and SEGDIO3 becomes bi-directional
SDATA, but only if LCD_MAP[2] and LCD_MAP[3] are cleared.
2456[7:6]
DIO_EEX[1:0] Function
0 – R/W
00
Disable EEPROM interface
01
2-Wire EEPROM interface
10
3-Wire EEPROM interface
11
3-Wire EEPROM interface with separate DO (DIO3)
and DI (DIO8) pins.