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ST72344S2 데이터시트(PDF) 176 Page - STMicroelectronics

부품명 ST72344S2
상세설명  SCI asynchronous serial interface
PDF  247 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72344S2 데이터시트(HTML) 176 Page - STMicroelectronics

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On-chip peripherals
ST72344xx, ST2345xx
176/247
Doc ID 12321 Rev 6
Figure 80.
Random read (dummy write + stop + start + current address read)
Figure 81.
Sequential read
Figure 82.
Combined format for read
Legend: SA - Slave Address, BA - Byte Address, W: Write, R: Read
11.7.6
Low-power modes
Start
Ack
Ack
Start
SA
R Ack
Data
Nack
Stop
W
SA
BA
Stop
Start
Ack
Ack
Ack
Data Nack
Stop
SA
RData
Data
Start
SA
R
Ack
Data
Nack
Restart
SA
R
Ack
Data
Nack
Stop
Table 68.
Mode description
Mode
Description
Wait
No effect on I2C interface.
I2C interrupts causes the device to exit from Wait mode.
Halt
I2C registers are frozen.
In Halt mode, the I2C interface is inactive and does not acknowledge data on the bus.
The I2C interface resumes operation when the MCU is woken up by an interrupt with
“exit from Halt mode” capability.
Active-halt
I2C registers are frozen.
In Active halt mode, the I2C interface is inactive and does not acknowledge data on the
bus. The I2C interface resumes operation when the MCU is woken up by an interrupt
with “exit from Active-halt mode” capability.



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