STPM14 STMicroelectronics, STPM14 Datasheet - Page 26

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

Theory of operation
Table 14.
26/43
001010
001011
001100
001101
001110
001111
010010
010011
010100
010101
010110
010111
011000
011001
011010
011011
011100
011101
011110
011111
Binary
6-BIT
Address
13
15
19
23
31
DEC
10
11
12
14
18
20
21
22
24
25
26
27
28
29
30
Configuration bits map
(1)
(1)
(1)
(1)
(1)
KMOT
Name
FUND
BGTC
LTCH
CPH
CHV
ABS
N. of
bits
1
1
2
2
2
4
8
This bit swaps the energy type between fundamental or wide band.
- FUND=0: wide band active energy up to 50
- FUND=1: fundamental active energy
Power accumulation type selection:
- ABS=0: signed accumulation,
- ABS=1: absolute accumulation
No-load condition constant:
LTCH=0
LTCH=1
LTCH=2
LTCH=3
Constant of stepper pulses/kWh (see par. 7.14) selection:
If LVS=0,
KMOT=0
KMOT=1
KMOT=2
KMOT=3
If LVS=1,
KMOT=0
KMOT=1
KMOT=2
KMOT=3
Bandgap temperature compensation bits. See
4-bit unsigned data for compensation of phase error, 0°+0.576°
16 values are possible with a compensation step of 0.0384°. When CPH=0
the compensation is 0°, when CPH=15 the compensation is 0.576°.
8-bit unsigned data for voltage channel calibration.
256 values are possible. When CHV is 0 the calibrator is at -12.5% of the
nominal value. When CHV is 255 the calibrator is at +12.5%. The calibration
step is then 0.098%.
→
→
→
→
→
→
→
→
→
→
→
→
1600
3200
6400
800
P/64
P/128
P/32
P/256
P/640
P/1280
P/320
P/2560
DESCRIPTION
th
(1)
Figure 16.
harmonic;
for details.
STPM11/12/13/14