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STPM32 Datasheet(PDF) 43 Page - STMicroelectronics

Part # STPM32
Description  ASSP for metering applications with up to four independent 24-bit 2nd order sigma-delta ADCs, 4 MHz OSF and 2 embedded PGLNA
PDF  89 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STPM32 Datasheet(HTML) 43 Page - STMicroelectronics

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Bit
Internal signal
Description
5
PHx events
Sign active fundamental power
6
Sign reactive power
7
Sign apparent power
8
Overflow active energy
9
Overflow active fundamental energy
10
Overflow reactive energy
11
Overflow apparent power
12
Cx events
Current zero-crossing
13
Current sigma-delta bitstream stuck
14
Current AH accumulation
15
Current swell event history
16
17
18
19
Vx events
Voltage zero-crossing
20
Voltage sigma-delta bitstream stuck
21
Voltage period error (out of range)
22
Voltage swell event history
23
24
25
26
Voltage sag event history
27
28
29
30
-
Reserved
31
-
Reserved
1. Valid for the STPM33 and STPM34 only.
Status interrupt register
When an event is detected, DSP sets the status register (DSP_SR1 and DSP_SR2) bits that remain latched,
even if the event ceases, until they are cleared to zero by a write operation.
Table 21. Status register
Bit
Internal signal
Description
0
PH1+PH2 status(1)
Sign total active power
1
Sign total reactive power
2
Overflow total active energy
3
Overflow total reactive energy
4
PH2 IRQ status(1)
Sign secondary channel active power
5
Sign secondary active fundamental power
6
Sign secondary reactive power
STPM32, STPM33, STPM34
Functional description of hardwired DSP
DS10272 - Rev 13
page 43/89



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