AT32UC3L032-AUR Atmel, AT32UC3L032-AUR Datasheet - Page 16

• Manufacturer Part Number: AT32UC3L032-AUR
• Description: IC MCU AVR32 32K FLASH 48TQFP
• Manufacturer: Atmel
• Series: AVR®32 UC3r

Specifications of AT32UC3L032-AUR

• Package / Case: 48-TQFP, 48-VQFP
• Voltage - Supply (vcc/vdd): 1.62 V ~ 1.98 V
• Operating Temperature: -40°C ~ 85°C
• Speed: 50MHz
• Number Of I /o: 36
• Core Processor: AVR
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Program Memory Size: 32KB (32K x 8)
• Data Converters: A/D 9x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, DMA, PWM, WDT
• Connectivity: I²C, SPI, UART/USART
• Core Size: 32-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

3.5.2
3.5.3
3.5.3.1
32099AS–AVR32–06/09
Voltage Regulator
Regulator Connection
3.3V Single Supply Mode
The AT32UC3L embeds a voltage regulator that converts from 3.3V nominal to 1.8V with a load
of up to 60 mA. The regulator supplies the output voltage on VDDCORE. VDDCORE should be
externally connected to the 1.8V domains. See
Adequate output supply decoupling is mandatory for VDDCORE to reduce ripple and avoid
oscillations. The best way to achieve this is to use two capacitors in parallell between
VDDCORE and GND as close to the chip as possible. Please refer to
pling capacitors values and regulator characteristics.
Figure 3-2.
The AT32UC3L supports three power supply configurations:
• 3.3V single supply mode
• 1.8V single supply mode
• 3.3V supply mode, with 1.8V regulated I/O lines
In 3.3V single supply mode the internal regulator is connected to the 3.3V source (VDDIN pin)
and its output feeds VDDCORE.
gle supply mode. All I/O lines will be powered by the same power (VDDIN=VDDIO).
3.3V
1.8V
Supply Decoupling
C
C
OUT2
IN2
Figure 3-3
shows the power schematics to be used for 3.3V sin-
C
C
IN1
OUT1
Section 3.5.3
VDDCORE
VDDIN
for regulator connection figures.
Section 7.9.1
AT32UC3L
Regulator
1.8V
for decou-
16