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STPM32 Datasheet(PDF) 70 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) 70 Page - STMicroelectronics

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Bit
Internal signal
Description
Default
24
V2 status
Secondary voltage sigma-delta bitstream stuck
0
25
Secondary voltage period error
0
26
Secondary voltage sag detected
0
27
Secondary voltage sag end
0
28
Secondary voltage swell detected
0
29
Secondary voltage swell end
0
30
Tamper
Tamper on secondary
0
31
Tamper or wrong connection
0
10.3
UART/SPI registers
Table 59. Row 18, UART/SPI control register 1 (US_REG1)
Bit
Internal signal
Description
Default
[7:0]
CRCpolynomial
UART/SPI polynomial for CRC calculus (SMBus default polynomial
used: x8+x2+x+1)
0x07
8
Noise detection enable
UART noise immunity feature enabled
0x0
9
Break on error
UART break feature enabled
0x0
[13:10]
-
Reserved
0x0
14
CRCenable
8-bit CRC enable (5th packet required in each transmission)
0x1
15
LSBfirst
0: big-endian, 1: little-endian
0x0
[23:16]
Time out
Time out (ms)
0x0
[31:24]
-
Reserved
0x0
Table 60. UART/SPI control register 2 (US_REG2)
Bit
Internal signal
Description
Default
[15:0]
Baud rate
Defaulted to 9600 baud
0x683
[23:16]
Frame delay
Frame delay
0x0
[31:24]
-
Reserved
0x0
Table 61. Row 20, UART/SPI control register 3 (US_REG3)
Bit
Internal signal
Description
Default
0
Reserved
0
1
UART CRC error
Activate IRQ on both INT1, INT2 for selected signals
0
2
UART timeout error
Activate IRQ on both INT1, INT2 for selected signals
0
3
UART framing error
Activate IRQ on both INT1, INT2 for selected signals
0
4
UART noise error
Activate IRQ on both INT1, INT2 for selected signals
0
5
UART RX overrun
Activate IRQ on both INT1, INT2 for selected signals
0
6
UART TX overrun
Activate IRQ on both INT1, INT2 for selected signals
0
7
-
Reserved
0
8
SPI RX full
Activate IRQ on both INT1, INT2 for selected signals
0
9
SPITX empty
Activate IRQ on both INT1, INT2 for selected signals
0
STPM32, STPM33, STPM34
UART/SPI registers
DS10272 - Rev 13
page 70/89



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