ATSAM3S4AA-MU Atmel, ATSAM3S4AA-MU Datasheet - Page 233

• Manufacturer Part Number: ATSAM3S4AA-MU
• Description: IC MCU 32BIT 256KB FLASH 48QFN
• Manufacturer: Atmel
• Series: SAM3Sr

Specifications of ATSAM3S4AA-MU

• Core Processor: ARM® Cortex-M3™
• Core Size: 32-Bit
• Speed: 64MHz
• Connectivity: I²C, MMC, SPI, SSC, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
• Number Of I /o: 34
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.62 V ~ 1.95 V
• Data Converters: A/D 8x10/12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-VQFN Exposed Pad, 48-HVQFN, 48-SQFN, 48-DHVQFN
• Processor Series: ATSAM3x
• Core: ARM Cortex M3
• 3rd Party Development Tools: JTRACE-CM3, MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: ATSAM3S-EK
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

12.4.2
Name:
Address:
Access:
• URSTS: User Reset Status
0 = No high-to-low edge on NRST happened since the last read of RSTC_SR.
1 = At least one high-to-low transition of NRST has been detected since the last read of RSTC_SR.
• RSTTYP: Reset Type
Reports the cause of the last processor reset. Reading this RSTC_SR does not reset this field.
• NRSTL: NRST Pin Level
Registers the NRST Pin Level at Master Clock (MCK).
• SRCMP: Software Reset Command in Progress
0 = No software command is being performed by the reset controller. The reset controller is ready for a software command.
1 = A software reset command is being performed by the reset controller. The reset controller is busy.
6500C–ATARM–8-Feb-11
0
0
0
0
1
31
23
15
–
–
–
7
–
RSTTYP
Reset Controller Status Register
0
0
1
1
0
0
1
0
1
0
30
22
14
RSTC_SR
0x400E1404
Read-only
–
–
–
6
–
Reset Type
General Reset
Backup Reset
Watchdog Reset
Software Reset
User Reset
29
21
13
–
–
–
5
–
28
20
12
–
–
–
4
–
Comments
First power-up Reset
Return from Backup mode
Watchdog fault occurred
Processor reset required by the software
NRST pin detected low
27
19
11
–
–
–
3
–
26
18
10
–
–
2
–
SAM3S Preliminary
RSTTYP
SRCMP
25
17
–
9
1
–
URSTS
NRSTL
24
16
–
8
0
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