AT32UC3B0512-A2UT Atmel, AT32UC3B0512-A2UT Datasheet - Page 37
![IC MCU AVR32 512K FLASH 64TQFP](/photos/6/81/68127/313-64-vqfp_sml.jpg)
AT32UC3B0512-A2UT
Manufacturer Part Number
AT32UC3B0512-A2UT
Description
IC MCU AVR32 512K FLASH 64TQFP
Manufacturer
Atmel
Series
AVR®32 UC3r
Specifications of AT32UC3B0512-A2UT
Core Processor
AVR
Core Size
32-Bit
Speed
60MHz
Connectivity
I²C, IrDA, SPI, SSC, UART/USART, USB
Peripherals
Brown-out Detect/Reset, DMA, POR, PWM, WDT
Number Of I /o
44
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
96K x 8
Voltage - Supply (vcc/vdd)
1.65 V ~ 1.95 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP, 64-VQFP
Controller Family/series
AT32UC3B
No. Of I/o's
44
Ram Memory Size
96KB
Cpu Speed
60MHz
No. Of Timers
1
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
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Price
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Manufacturer:
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9.4
9.4.1
9.4.2
9.4.3
9.5
9.5.1
9.5.2
32059K–03/2011
Product Dependencies
Functional Description
I/O Lines
Interrupt
Clock implementation
Slow clock
Oscillator 0 and 1 operation
The PM provides a number of generic clock outputs, which can be connected to output pins,
multiplexed with GPIO lines. The programmer must first program the GPIO controller to assign
these pins to their peripheral function. If the I/O pins of the PM are not used by the application,
they can be used for other purposes by the GPIO controller.
The PM interrupt line is connected to one of the internal sources of the interrupt controller. Using
the PM interrupt requires the interrupt controller to be programmed first.
In AT32UC3B, the HSB shares the source clock with the CPU. This means that writing to the
HSBDIV and HSBSEL bits in CKSEL has no effect. These bits will always read the same as
CPUDIV and CPUSEL.
The slow clock is generated from an internal RC oscillator which is always running, except in
Static mode. The slow clock can be used for the main clock in the device, as described in
chronous clocks” on page
measuring various delays in the Power Manager.
The RC oscillator has a 3 cycles startup time, and is always available when the CPU is running.
The RC oscillator operates at approximately 115 kHz, and can be calibrated to a narrow range
by the RCOSCCAL fuses. Software can also change RC oscillator calibration through the use of
the RCCR register. Please see the Electrical Characteristics section for details.
RC oscillator can also be used as the RTC clock when crystal accuracy is not required.
The two main oscillators are designed to be used with an external 450 kHz to 16 MHz crystal
and two biasing capacitors, as shown in
the device, as described in
source for the generic clocks, as described in
The oscillators are disabled by default after reset. When the oscillators are disabled, the XIN and
XOUT pins can be used as general purpose I/Os. When the oscillators are configured to use an
external clock, the clock must be applied to the XIN pin while the XOUT pin can be used as a
general purpose I/O.
The oscillators can be enabled by writing to the OSCnEN bits in MCCTRL. Operation mode
(external clock or crystal) is chosen by writing to the MODE field in OSCCTRLn. Oscillators are
automatically switched off in certain sleep modes to reduce power consumption, as described in
Section 9.5.7 on page
After a hard reset, or when waking up from a sleep mode that disabled the oscillators, the oscil-
lators may need a certain amount of time to stabilize on the correct frequency. This start-up time
can be set in the OSCCTRLn register.
42.
”Synchronous clocks” on page
39. The slow clock is also used for the Watchdog Timer and
Figure
”Generic clocks” on page
. Oscillator 0 can be used for the main clock in
39. Both oscillators can be used as
43.
AT32UC3B
”Syn-
37
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