STM32W108B-SK STMicroelectronics, STM32W108B-SK Datasheet - Page 35
STM32W108B-SK
Manufacturer Part Number
STM32W108B-SK
Description
STARTER KIT FOR STM32W108
Manufacturer
STMicroelectronics
Series
STM32r
Type
MCUr
Datasheets
1.STM32W108B-KEXT.pdf
(3 pages)
2.STM32W108B-KEXT.pdf
(209 pages)
3.STM32W108B-KEXT.pdf
(27 pages)
4.STM32W108B-KEXT.pdf
(6 pages)
5.STM32W108B-SK.pdf
(21 pages)
6.STM32W108B-KEXT.pdf
(14 pages)
7.STM32W108B-KEXT.pdf
(36 pages)
Specifications of STM32W108B-SK
Featured Product
STM32 Cortex-M3 Companion Products
Contents
Board
Silicon Manufacturer
ST Micro
Core Architecture
ARM
Core Sub-architecture
Cortex - M3
Silicon Core Number
STM32
Silicon Family Name
STM32W108xx
Kit Contents
Board
Features
IEEE
Mfg Application Notes
STM32W108 Adjacent Channel Rejection Measurements
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
*
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
- STM32W108B-KEXT PDF datasheet
- STM32W108B-KEXT PDF datasheet #2
- STM32W108B-KEXT PDF datasheet #3
- STM32W108B-KEXT PDF datasheet #4
- STM32W108B-SK PDF datasheet #5
- STM32W108B-KEXT PDF datasheet #6
- STM32W108B-KEXT PDF datasheet #7
- Current page: 35 of 209
- Download datasheet (3Mb)
STM32W108CB, STM32W108HB
6.2
6.2.1
Note:
Resets
The STM32W108 resets are generated from a number of sources. Each of these reset
sources feeds into central reset detection logic that causes various parts of the system to be
reset depending on the state of the system and the nature of the reset event.
Reset sources
For power-on reset (POR HV and POR LV) thresholds, see
conditions at power-up on page
Watchdog reset
The STM32W108 contains a watchdog timer (see also the Watchdog Timer section) that is
clocked by the internal 1 kHz timing reference. When the timer expires it generates the reset
source WATCHDOG_RESET to the Reset Generation module.
Software reset
The ARM® Cortex-M3 CPU can initiate a reset under software control. This is indicated with
the reset source SYSRESETREQ to the Reset Generation module.
When using certain external debuggers, the chip may lock up require a pin reset or power
cycle if the debugger asserts SYSRESETREQ. It is recommended not to write to the
SCS_AIRCR register directly from application code. The ST software provides a reset
function that should be used instead. This reset function ensures that the chip is in a safe
clock mode prior to triggering the reset.
Option byte error
The flash memory controller contains a state machine that reads configuration information
from the information blocks in the Flash at system start time. An error check is performed on
the option bytes that are read from Flash and, if the check fails, an error is signaled that
provides the reset source OPT_BYTE_ERROR to the Reset Generation module.
If an option byte error is detected, the system restarts and the read and check process is
repeated. If the error is detected again the process is repeated but stops on the 3rd failure.
The system is then placed into an emulated deep sleep where recovery is possible. In this
state, Flash memory readout protection is forced active to prevent secure applications from
being compromised.
Debug reset
The Serial Wire/JTAG Interface (SWJ) provides access to the SWJ Debug Port (SWJ-DP)
registers. By setting the register bit CDBGRSTREQ in the SWJ-DP, the reset source
CDBGRSTREQ is provided to the Reset Generation module.
JTAG reset
One of the STM32W108's pins can function as the JTAG reset, conforming to the
requirements of the JTAG standard. This input acts independently of all other reset sources
and, when asserted, does not reset any on-chip hardware except for the JTAG TAP. If the
STM32W108 is in the Serial Wire mode or if the SWJ is disabled, this input has no effect.
Doc ID 16252 Rev 8
186.
Section 14.3.2: Operating
System modules
35/209
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