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ST7FOXA0 Datasheet(PDF) 42 Page - STMicroelectronics

Part # ST7FOXA0
Description  8-bit MCU with single voltage Flash memory
PDF  123 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7FOXA0 Datasheet(HTML) 42 Page - STMicroelectronics

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Power saving modes
ST7FOXA0
42/123
7
Power saving modes
7.1
Introduction
To give a large measure of flexibility to the application in terms of power consumption, four
main power saving modes are implemented in the ST7 (see Figure 16):
●
Slow
●
Wait (and Slow-Wait)
●
Active Halt
●
Auto wakeup From Halt (AWUFH)
●
Halt
After a reset the normal operating mode is selected by default (Run mode). This mode
drives the device (CPU and embedded peripherals) by means of a master clock which is
based on the main oscillator frequency (fOSC).
From Run mode, the different power saving modes may be selected by setting the relevant
register bits or by calling the specific ST7 software instruction whose action depends on the
oscillator status.
Figure 16.
Power saving mode transitions
POWER CONSUMPTION
Wait
Slow
Run
Active Halt
High
Low
Slow Wait
Halt
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