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STPM32 Datasheet(PDF) 76 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  121 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STPM32 Datasheet(HTML) 76 Page - STMicroelectronics

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Theory of operation
STPM32, STPM33, STPM34
76/121
DS10272 Rev 8
SPI RX overrun: occurs when two consecutive write transactions are too fast and close
to each other
SPI TX underrun: occurs when a read-back operation (= write then read the same
register) or latch/read is too fast
SPI CRC error: CRC error detected
UART/SPI write address error: write address out of range (not write address not
writable)
Table 33. UART/SPI status and interrupt control register
Register
Bit position
Description
Default value
Access
mode
SR
30
SPI RX overrun
0
RW
29
SPI TX underrun
0
RW
28
SPI CRC error
0
RW
27
UART/SPI write address error
0
RW
26
UART/SPI read address error
0
RW
25
SPI TX empty
0
RO
24
SPI RX full
0
RO
22
UART TX overrun
0
RW
21
UART RX overrun
0
RW
20
UART noise error
0
RW
19
UART frame error
0
RW
18
UART timeout error
0
RW
17
UART CRC error
0
RW
16
UART break
0
RW
IRQ CR
14
mask for SPI RX overrun error status bit
0
RW
13
mask for SPI TX underrun error status bit
0
RW
12
mask for SPI CRC error status bit
0
RW
11
mask for write address error status bit
0
RW
10
mask for read address error status bit
0
RW
9
mask for SPI TX empty
0
RW
8
mask for SPI RX full
0
RW
6
mask for UART TX overrun
0
RW
5
mask for UART RX overrun
0
RW
4
mask for UART noise error
0
RW
3
mask for UART frame error
0
RW
2
mask for UART timeout error
0
RW
1
mask for UART CRC error
0
RW



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