STM32W108C8U64TR STMicroelectronics, STM32W108C8U64TR Datasheet - Page 35
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STM32W108C8U64TR
Manufacturer Part Number
STM32W108C8U64TR
Description
16/32-BITS MICROS
Manufacturer
STMicroelectronics
Series
STM32r
Datasheet
1.STM32W108C8U63TR.pdf
(207 pages)
Specifications of STM32W108C8U64TR
Applications
RF4CE, Remote Control
Core Processor
ARM® Cortex-M3™
Program Memory Type
FLASH (64 kB)
Controller Series
STM32W
Ram Size
8K x 8
Interface
I²C, SPI, UART/USART
Number Of I /o
24
Voltage - Supply
1.18 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
48-VFQFN Exposed Pad
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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STM32W108C8
6.2.2
Note:
6.2.3
Deep sleep reset
The Power Management module informs the Reset Generation module of entry into and exit
from the deep sleep states. The deep sleep reset is applied in the following states: before
entry into deep sleep, while removing power from the memory and core domain, while in
deep sleep, while waking from deep sleep, and while reapplying power until reliable power
levels have been detect by POR LV.
The Power Management module allows a special emulated deep sleep state that retains
memory and core domain power while in deep sleep.
Reset recording
The STM32W108C8 records the last reset condition that generated a restart to the system.
The reset conditions recorded are:
●
●
●
●
●
●
●
The
All bits are mutually exclusive except the OPT_BYTE_FAIL bit which preserves the original
reset event when set.
While CPU Lockup is marked as a reset condition in software, CPU Lockup is not
specifically a reset event. CPU Lockup is set to indicate that the CPU entered an
unrecoverable exception. Execution stops but a reset is not applied. This is so that a
debugger can interpret the cause of the error. We recommend that in a live application (i.e.
no debugger attached) the watchdog be enabled by default so that the STM32W108C8 can
be restarted.
Reset generation
The Reset Generation module responds to reset sources and generates the following reset
signals:
●
●
●
Reset event source register (RESET_EVENT)
POWER_HV
POWER_LV
RSTB
W_DOG
SW_RST
WAKE_UP_DSLEEP
OPT_BYTE_FAIL
PORESET
SYSRESET
DAPRESET
Always-on domain power supply failure
Core or memory domain power supply failure
NRST pin asserted
Watchdog timer expired
Software reset by SYSERSETREQ from ARM® Cortex-M3
CPU
Wake-up from deep sleep
Error check failed when reading option bytes from Flash
memory
Reset of the ARM® Cortex-M3 CPU and ARM® Cortex-M3
System Debug components (Flash Patch and Breakpoint,
Data Watchpoint and Trace, Instrumentation Trace Macrocell,
Nested Vectored Interrupt Controller). ARM defines
PORESET as the region that is reset when power is applied.
Reset of the ARM® Cortex-M3 CPU without resetting the
Core Debug and System Debug components, so that a live
system can be reset without disturbing the debug
configuration.
Reset to the SWJ's AHB Access Port (AHB-AP).
Doc ID 018587 Rev 1
is used to read back the last reset event.
System modules
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