ATEVK1104 Atmel, ATEVK1104 Datasheet - Page 65

• Manufacturer Part Number: ATEVK1104
• Description: KIT DEV/EVAL FOR AVR32 AT32UC3A
• Manufacturer: Atmel
• Series: AVR®32r
• Type: MCUr

Specifications of ATEVK1104

• Contents: Evaluation Board, Software and Documentation
• Processor To Be Evaluated: AT32UC3A3
• Data Bus Width: 32 bit
• Interface Type: USB, SPI, USART
• Silicon Manufacturer: Atmel
• Core Architecture: AVR
• Core Sub-architecture: AVR UC3
• Silicon Core Number: AT32UC3A3256
• Silicon Family Name: AVR
• Kit Contents: Board CD Docs
• Rohs Compliant: Yes
• For Use With/related Products: AT32UC3A3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 13-4.
13.5.11.1
13.5.11.2
32058J–AVR32–04/11
CPU/HSB/PBA/PBB
(excluding Power Manager)
32 KHz oscillator
RTC control register
Voltage Calibration register
RC Oscillator Calibration register
BOD control register
Bandgap control register
Clock control registers
Osc0/Osc1 and control registers
PLL0/PLL1 and control registers
OCD system and OCD registers
GPLP registers
Watchdog control register
Power-On Detector
Brown-Out Detector
Effect of the different reset events
Table 13-4
The cause of the last reset can be read from the RCAUSE register. This register contains one bit
for each reset source, and can be read during the boot sequence of an application to determine
the proper action to be taken.
The Power-On Detector monitors the VDDCORE supply pin and generates a reset when the
device is powered on. The reset is active until the supply voltage from the linear regulator is
above the power-on threshold level. The reset will be re-activated if the voltage drops below the
power-on threshold level. See Electrical Characteristics for parametric details.
The Brown-Out Detector (BOD) monitors the VDDCORE supply pin and compares the supply
voltage to the brown-out detection level, as set in BOD:LEVEL. The BOD is disabled by default,
but can be enabled either by software or by flash fuses. The Brown-Out Detector can either gen-
erate an interrupt or a reset when the supply voltage is below the brown-out detection level. In
any case, the BOD output is available in bit POSCR:BODET bit.
Note that any change to the BOD:LEVEL field of the BOD register should be done with the BOD
deactivated to avoid spurious reset or interrupt.
See Electrical Characteristics for parametric details.
Power-On
Reset
lists parts of the device that are reset, depending on the reset source.
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
External
Reset
Y
N
N
N
N
N
Y
Y
Y
Y
Y
Y
Y
Watchdog
Reset
Y
N
N
N
N
N
N
N
N
Y
Y
Y
N
BOD
Reset
N
N
N
N
N
N
N
Y
Y
Y
Y
Y
Y
CPU Error
Reset
N
N
N
N
N
N
N
Y
Y
Y
Y
Y
Y
AT32UC3A
OCD
Reset
N
N
N
N
N
Y
N
N
N
Y
Y
Y
Y
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