AT32UC3B0256-A2UR Atmel, AT32UC3B0256-A2UR Datasheet - Page 46

• Manufacturer Part Number: AT32UC3B0256-A2UR
• Description: MCU AVR32 256K FLASH 64-TQFP
• Manufacturer: Atmel
• Series: AVR®32 UC3r

Specifications of AT32UC3B0256-A2UR

• Package / Case: 64-TQFP, 64-VQFP
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Operating Temperature: -40°C ~ 85°C
• Speed: 60MHz
• Number Of I /o: 44
• Core Processor: AVR
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Program Memory Size: 256KB (256K x 8)
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Connectivity: I²C, IrDA, SPI, SSC, UART/USART, USB
• Core Size: 32-Bit
• Package: 64TQFP
• Device Core: AVR32
• Family Name: AT32
• Maximum Speed: 60 MHz
• Operating Supply Voltage: 1.8|3.3 V
• Data Bus Width: 32 Bit
• Number Of Programmable I/os: 44
• Interface Type: I2S/SPI/TWI/USART/USB
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

32059K–03/2011
Figure 9-6.
In addition to the listed reset types, the JTAG can keep parts of the device statically reset
through the JTAG Reset Register. See JTAG documentation for details.
Table 9-3.
When a Reset occurs, some parts of the chip are not necessarily reset, depending on the reset
source. Only the Power On Reset (POR) will force a reset of the whole chip.
Reset source
Power-on Reset
External Reset
Brownout Reset
CPU Error
Watchdog Timer
OCD
R E S E T _ N
P o w e r-O n
B ro w n o u t
D e te c to r
D e te c to r
W a tc h d o g R e s e t
Reset Controller block diagram
Reset description
J T A G
O C D
Description
Supply voltage below the power-on reset detector threshold
voltage
RESET_N pin asserted
Supply voltage below the brownout reset detector threshold
voltage
Caused by an illegal CPU access to external memory while
in Supervisor mode
See watchdog timer documentation.
See On-Chip Debug documentation
C o n tro lle r
R C _ R C A U S E
R e s e t
AT32UC3B
O C D , R T C /W D T
C lo c k G e n e ra to
C P U , H S B ,
P B A , P B B
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