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ST72321R7-Auto Datasheet(PDF) 64 Page - STMicroelectronics

No. de pieza ST72321R7-Auto
Descripción Electrónicos  PLL for 2x frequency multiplication
PDF  243 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72321R7-Auto Datasheet(HTML) 64 Page - STMicroelectronics

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Power saving modes
ST72321xx-Auto
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Doc ID 13829 Rev 1
Figure 24.
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.
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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