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NRF52811-QCAA-R bảng dữ liệu(PDF) 350 Page - Nordic Semiconductor

tên linh kiện NRF52811-QCAA-R
Giải thích chi tiết về linh kiện  nRF52811
PDF  444 Pages
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nhà sản xuất  NORDIC [Nordic Semiconductor]
Trang chủ  https://www.nordicsemi.com/
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NRF52811-QCAA-R bảng dữ liệu(HTML) 350 Page - Nordic Semiconductor

Back Button NRF52811-QCAA-R Datasheet HTML 346Page - Nordic Semiconductor NRF52811-QCAA-R Datasheet HTML 347Page - Nordic Semiconductor NRF52811-QCAA-R Datasheet HTML 348Page - Nordic Semiconductor NRF52811-QCAA-R Datasheet HTML 349Page - Nordic Semiconductor NRF52811-QCAA-R Datasheet HTML 350Page - Nordic Semiconductor NRF52811-QCAA-R Datasheet HTML 351Page - Nordic Semiconductor NRF52811-QCAA-R Datasheet HTML 352Page - Nordic Semiconductor NRF52811-QCAA-R Datasheet HTML 353Page - Nordic Semiconductor NRF52811-QCAA-R Datasheet HTML 354Page - Nordic Semiconductor Next Button
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Peripherals
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ADDR
0
M-1
M
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4
Stretch
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Figure 132: The TWI master reading data from a slave
6.25.4 Master repeated start sequence
A typical repeated start sequence is one in which the TWI master writes two bytes to the slave followed by
reading four bytes from the slave. This example uses shortcuts to perform the simplest type of repeated
start sequence, i.e. one write followed by one read. The same approach can be used to perform a
repeated start sequence where the sequence is read followed by write.
The figure A repeated start sequence, where the TWI master writes two bytes followed by reading 4 bytes
from the slave on page 350 illustrates this:
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ADDR
0
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2
ADDR
0
1
1
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Figure 133: A repeated start sequence, where the TWI master
writes two bytes followed by reading 4 bytes from the slave
If a more complex repeated start sequence is needed and the TWI firmware drive is serviced in a low
priority interrupt it may be necessary to use the SUSPEND task and SUSPENDED event to guarantee that
the correct tasks are generated at the correct time. This is illustrated in A double repeated start sequence
using the SUSPEND task to secure safe operation in low priority interrupts on page 351.
4454_140 v1.0
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