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STPMIC1 데이터시트(PDF) 47 Page - STMicroelectronics

부품명 STPMIC1
상세설명  Highly integrated power management IC for micro processor units
PDF  140 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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STPMIC1 데이터시트(HTML) 47 Page - STMicroelectronics

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5
Functional description
5.1
Overview
The STPMIC1 integrates advanced low power features controlled by the application processor through I²C, 4
digital control pins (PONKEYn, WAKEUP, PWRCTRL and RSTn) and one interrupt output line (INTn).
The main parameter settings can be programmed in a non-volatile memory (NVM) as default values at start-up
time.
See Section 5.5.2 Non-volatile memory (NVM)
The STPMIC1 offers 2 independent POWER_ON modes called MAIN and ALTERNATE. Switching between these
modes is driven by the application processor through PWRCTRL pin.
This allow a flexible configuration and fast transition between two different power strategies at application level,
typically RUN and STANDBY (LowPower).
Other features are provided to fulfill high-end application processors and advanced operating system needs:
•
Multiple turn-on/turn-off conditions
•
mask_default and restart_request options
•
Overcurrent and overvoltage protection
•
Thermal protection
•
Watchdog
•
Interrupt controller
5.2
Functional state machine
The behavior of the STPMIC1 circuit is controlled by a state machine described in this section.
STPMIC1
Functional description
DS12792 - Rev 7
page 47/140



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