Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD 데이터 시트

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SAM4S Series [DATASHEET]

Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14

The brownout detector provides the bodcore_in signal to the SUPC which indicates that the voltage regulation is 

operating as programmed. If this signal is lost for longer than 1 slow clock period while the voltage regulator is 

enabled, the Supply Controller asserts vddcore_nreset if BODRSTEN is written to 1 in SUPC_MR.
If BODRSTEN is set and the voltage regulation is lost (output voltage of the regulator too low), the vddcore_nreset 

signal is asserted for a minimum of 1 slow clock cycle and then released if bodcore_in has been reactivated. The 

BODRSTS bit is set in SUPC_SR so that the user can know the source of the last reset.
Until bodcore_in is deactivated, the vddcore_nreset signal remains active.

The wake-up events allow the device to exit backup mode. When a wake-up event is detected, the Supply 

Controller performs a sequence which automatically reenables the core power supply.

The wake-up inputs, WKUPx, can be programmed to perform a wake-up of the core power supply. Each input can 

be enabled by writing to 1 the corresponding bit, WKUPENx, in the Wake-up Inputs register (SUPC_WUIR). The 

wake-up level can be selected with the corresponding polarity bit, WKUPTx, also located in SUPC_WUIR. 
All the resulting signals are wired-ORed to trigger a debounce counter, which is programmed with the WKUPDBC 

field in SUPC_WUMR. The WKUPDBC field selects a debouncing period of 3, 32, 512, 4,096 or 32,768 slow clock 

WKUP15

WKUPEN15

WKUPT15

WKUPEN1

WKUPEN0

Debouncer

SLCK

WKUPDBC

WKUPS

RTCEN

rtc_alarm

SMEN

sm_out

Core 
Supply
Restart

WKUPIS0

WKUPIS1

WKUPIS15

WKUPT0

WKUPT1

WKUP0

WKUP1

RTTEN

rtt_alarm

Debouncer

RTCOUT0

LPDBC

Debouncer

LPDBC

RTCOUT0

LPDBCS0

LPDBCS1

LPDBCEN1

Low/High 

Level Detect

WKUPT1

LPDBCEN0

Low/High 

Level Detect

WKUPT0

Low/High 

Level Detect

Low/High 

Level Detect

Low/High 

Level Detect

Low-power
Tamper Detection
Logic