78M6612-GTR/F/P2 Maxim Integrated Products, 78M6612-GTR/F/P2 Datasheet - Page 85
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78M6612-GTR/F/P2
Manufacturer Part Number
78M6612-GTR/F/P2
Description
Current & Power Monitors & Regulators
Manufacturer
Maxim Integrated Products
Datasheet
1.78M6612-IMF.pdf
(111 pages)
Specifications of 78M6612-GTR/F/P2
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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DS_6612_001
The CE is initialized by the MPU using CECONFIG (CESTATE.). This register contains in packed form
SAG_CNT, FREQSEL, EXT_PULSE, I1_SHUNT, I2_SHUNT, PULSE_SLOW, and PULSE_FAST.
The significance of the bits in CECONFIG is shown in the table below.
The CE controls the pulse rate based on W1SUM_X + W2SUM_X (and VAR1SUM_X + VAR2SUM_X).
Note: The 78M6612 Demo Code creep function halts pulse generation.
4.4.7 CE Transfer Variables
When the MPU receives the XFER_BUSY interrupt, it knows that fresh data is available in the transfer
variables. The transfer variables can be categorized as:
1. Fundamental energy measurement variables
2. Instantaneous (RMS) values
3. Other measurement parameters
Rev. 1.2
4. Pulse generation variables
5. Current shunt variables
6. Calibration parameters
Address
CECONFIG
0x0E
CE
[15:8]
[3:2]
[bit]
[7]
[6]
[5]
[4]
[1]
[0]
CECONFIG
Name
PULSE_FAST
SENSORSEL
PULSE_SLOW
PULSESEL
SAG_CNT
Name
–
–
–
Default
0x5001
Default
(0x50)
80
11
0
0
0
0
0
0
See description of CECONFIG below.
Description
Number of consecutive voltage samples below SAG_THR
before a sag alarm is declared. The maximum value is
255. SAG_THR is at address 0x14.
Unused
Unused
Unused
Selects outlet to be used for pulse generation.
0 = A
1 = B
Current sensor selection.
00 = CT
11 = Shunt
When PULSE_SLOW = 1, the pulse generator input is
reduced by a factor of 64. When PULSE_FAST = 1, the
pulse generator input is increased 16x. These two
parameters control the pulse gain factor X (see table
below). Allowed values are 1 or 0. Default is 01 (X = 6/64).
1.5 * 2
1.5 * 2
1.5 * 2
-4
1.5
= 0.09375
X
6
2
= 96
= 6
Description
PULSE_FAST
0
0
1
1
78M6612 Data Sheet
PULSE_SLOW
0
1
0
1
85
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