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ST72325AR7-Auto 데이터시트(PDF) 68 Page - STMicroelectronics

부품명 ST72325AR7-Auto
상세설명  SCI asynchronous serial interface
PDF  243 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
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ST72325AR7-Auto 데이터시트(HTML) 68 Page - STMicroelectronics

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Power saving modes
ST72325xxx-Auto
68/243
Doc ID 13770 Rev 3
Figure 26.
Wait mode flowchart
1.
Before servicing an interrupt, the CC register is pushed on the stack. The I[1:0] bits of the CC register are
set to the current software priority level of the interrupt routine and recovered when the CC register is
popped.
8.4
Active Halt and Halt modes
Active Halt and Halt modes are the two lowest power consumption modes of the MCU. They
are both entered by executing the ‘HALT’ instruction. The decision to enter either in Active
Halt or Halt mode is given by the MCC/RTC interrupt enable flag (OIE bit in MCCSR
register) as shown in Table 28.
WFI INSTRUCTION
RESET
INTERRUPT
Y
N
N
Y
CPU
OSCILLATOR
PERIPHERALS
I[1:0] BITS
ON
ON
10
OFF
FETCH RESET VECTOR
OR SERVICE INTERRUPT
CPU
OSCILLATOR
PERIPHERALS
I[1:0] BITS
ON
OFF
10
ON
CPU
OSCILLATOR
PERIPHERALS
I[1:0] BITS
ON
ON
XX(1)
ON
256 OR 4096 CPU CLOCK
CYCLE DELAY



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