Atmel Reset控制器的特性描述r.pptVIP

Reset Controller RSTC Features Manages All Resets of the System, Including External devices through the NRST pin Processor reset Peripheral set reset Based on Embedded Power_on Reset Cell Reset Source Status Status of the last reset Either Power-up Reset, Software Reset, User Reset, Watchdog Reset, Brownout Reset External Reset Signal Shaping Controls and Reports Brownout Detection RSTC Block Diagram Dependencies After reset The user reset is disabled, set bit URSTEN in RSTC_MR at 1 to enable it The Watchdog reset is enabled by default and with a period set to a maximum, reset bit WDRSTEN in WDT_MR to disable it At factory The brownout detection is disabled, GPNVM bit 0 set to 0 The brownout reset is disabled, GPNVM bit 1 is set to 0 NRST Manager URSTEN Disable the User Reset trigger when=0 URSTS Set to 1 when pin NRST is asserted Read RSTC_SR to clear NRSTL Read the level of the pin NRST at any time Brownout Manager BODSTS Set to 1 when the brownout is detected Read RSTC_SR to clear BODIEN Generate an interrupt instead of a reset when=1 Power-up Sequence User Reset Brownout Reset Software Reset Watchdog Reset RSTC Mode Register RSTC_MR User Reset Enable User Reset Interrupt Enable Brownout Detection Interrupt Enable External Reset Length Password RSTC Control Register RSTC_CR Processor Reset Peripheral Reset External Reset Password RSTC Status Register RSTC_SR User Reset Status Brownout Detection Status Reset type NRST Pin Level Software Reset Command in Progress RSTC Summary Manages All Resets of the System The user reset is disabled after reset The watchdog reset is enabled after reset The brownout detection is disabled after reset RSTC * URSTIEN Generate an interrupt instead of a reset when=1 ERSTL Define the assertion duration of nrst_out The Reset Controller is made up of a NRST Manager, a Brownout Manager, a Startup Counter and a Reset State Manager. It runs at Slow Clock and generates the following reset signals: proc_nreset: Processor reset line. It als