STPM14 STMicroelectronics, STPM14 Datasheet - Page 27

• Manufacturer Part Number: STPM14
• Description: (STPM11 - STPM14) Single phase energy metering IC
• Manufacturer: STMicroelectronics

STPM11/12/13/14
Table 14.
1. IMPORTANT: This Bit represents the MSB of the decimal value indicated in the description column.
100000
100001
100010
100011
100100
100101
100110
100111
101000
101001
101010
101011
101100
101101
101110
101111
110000
110001
110010
110011
110100
110101
110110
Binary
6-BIT
Address
39
47
49
51
DEC
32
33
34
35
36
37
38
40
41
42
43
44
45
46
48
50
52
53
54
Configuration bits map
(1)
(1)
(1)
(1)
ADDG
Name
NOM
CRIT
CHP
CHS
CRC
LVS
N. of
bits
8
8
2
2
1
1
1
8-bit unsigned data for primary current channel calibration.
256 values are possible. When CHP is 0 the calibrator is at -12.5% of the
nominal value. When CHP is 255 the calibrator is at +12.5%. The calibration
step is then 0.098%.
STPM13/14 only
8-bit unsigned data for secondary current channel calibration.
256 values are possible. When CHS is 0 the calibrator is at -12.5% of the
nominal value. When CHS is 255 the calibrator is at +12.5%. The calibration
step is then 0.098%.
STPM11/13 only
2-bit unsigned data for calibration of RC oscillator. (see Typical characteristics
in)
CRC=0, or CRC=3 cal=0%
CRC=1, cal=+10%;
CRC=2, cal=-10%
2-bit modifier of nominal voltage for Single Wire Meter.
NOM=0: K
NOM=3: K
Selection of additional gain on current channels:
ADDG=0: Gain+=0 / ADDG=1: Gain+=8
STPM13/14 only
Selection of tamper threshold:
CRIT =0: 12,5% / CRIT =1: 6,25%
Type of stepper selection:
LVS=0: pulse width 31.25 ms, 5V, / LVS=1: pulse width, 156.25 ms, 3V
NOM
NOM
=0.3594 / NOM=1: K
=0.4531
DESCRIPTION
NOM
=0.3906 / NOM=2: K
(1)
Theory of operation
NOM
=0.4219 /
27/43