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RM0319 Datasheet(PDF) 322 Page - STMicroelectronics

No. de pieza RM0319
Descripción Electrónicos  SPEAr320S architecture and functionality
PDF  368 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

RM0319 Datasheet(HTML) 322 Page - STMicroelectronics

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Power, reset and clock control
RM0319
322/368
Doc ID 022640 Rev 3
Figure 108. System operation states
Table 115.
Power state for synchronous DRAM system (DRAM clocked by PLL1)
State
ARM
ARM clock
DRAM
Possible code
execution memory
SLEEP
Hibernate
Off
Self refresh
None
DOZE
Running
Running
RTC Osc
MAIN Osc(PLL off)
Self refresh
Self refresh
Internal memory
Internal memory
SLOW
Running
MAIN Osc.(PLLoff)
Self refresh
Internal memory
NORMAL
Running
PLL1 (Up to 333 MHz)
Active
Internal memory and
external DRAM
Table 116.
Power state for asynchronous DRAM system (DRAM clocked by PLL2)
State
ARM
ARM clock
DRAM
Possible code
execution memory
SLEEP
Hibernate
Hibernate
off
off
Self refresh
Active
None
None
DOZE
Running
RTC Osc.
Self refresh
Internal memory
Running
RTC Osc
Active
Internal memory and
external DRAM
Running
MAIN Osc. (PLL off)
Self refresh
Internal memory
Running
MAIN Osc.(PLL off)
Active
Internal memory and
external DRAM
DOZE
SLOW
SLEEP
NORMAL
Performance
Consumption
IRQ, FIQ
and
RESET
Dynamic
Frequency
Scaling



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