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BLUENRG-332VC 数据表(PDF) 12 Page - STMicroelectronics

部件名 BLUENRG-332VC
功能描述  Programmable Bluetooth® Low Energy wireless SoC
PDF  67 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

BLUENRG-332VC 数据表(HTML) 12 Page - STMicroelectronics

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2.7
Operating modes
Several operating modes are defined for the BlueNRG-LPS:
•
RUN mode
•
DEEPSTOP mode
•
SHUTDOWN mode
Table 3. Relationship between the low power modes and functional blocks
Mode
SHUTDOWN
DEEPSTOP
IDLE
RUN
CPU
OFF
OFF
OFF
ON
Flash
OFF
OFF
ON
ON
RAM
OFF
ON/OFF granularity 12 Kbytes
ON/OFF
ON/OFF
Radio
OFF
OFF
ON/OFF
ON/OFF
Supply system
OFF
OFF
ON ( DC-DC ON/OFF) ON ( DC-DC ON/OFF)
Register retention
OFF
ON
ON
ON
HS clock
OFF
OFF
ON
ON
LS clock
OFF
ON/OFF
ON
ON
Peripherals
OFF
OFF
ON/OFF
ON/OFF
Wake-on RTC
OFF
ON/OFF
ON/OFF
NA
Wake on LPUART
OFF
ON/OFF
ON/OFF
NA
Wake on IWDG
OFF
ON/OFF
ON/OFF
NA
Wake-on GPIOs
OFF
ON/OFF
ON/OFF
NA
Wake-on reset pin
ON
ON
ON
NA
GPIOs configuration retention PWRC pull-up/pull-down only
ON
ON
ON
2.7.1
RUN mode
In RUN mode the BlueNRG-LPS is fully operational:
•
All interfaces are active
•
The internal power supplies are active
•
The system clock and the bus clock are running
•
The CPU core and the radio can be used
The power consumption may be reduced by gating the clock of the unused peripherals.
2.7.2
DEEPSTOP mode
DEEPSTOP is the only low-power mode of the BlueNRG-LPS allowing the restart from a saved context
environment and the application at wake-up to go on running.
The conditions to enter DEEPSTOP mode are:
•
The radio is sleeping (no radio activity)
•
The CPU is sleeping (WFI with SLEEPDEEP bit activated)
•
No unmasked wake-up sources are active
•
The low-power mode selection (LPMS) bit of the power controller unit is 0 (default)
•
The GPIO Retention Mode Selection (GPIORET) bit of the Power Controller unit must be set
In DEEPSTOP mode:
•
The system and the bus clocks are stopped
•
Only the essential digital power domain is ON and supplied at 1.0 V
•
The bank RAM0 is kept in retention
•
The bank RAM1 can be in retention or not, depending on the software configuration
BlueNRG-LPS
Operating modes
DS13819 - Rev 4
page 12/67



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