AT32UC3B0512-A2UT Atmel, AT32UC3B0512-A2UT Datasheet - Page 263
![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
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT32UC3B0512-A2UT
Manufacturer:
MURATA
Quantity:
11 450
Part Number:
AT32UC3B0512-A2UT
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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20.7.1.1
20.7.1.2
32059K–03/2011
Clock divider
Transmitter clock management
Figure 20-4. Divided Clock Block Diagram
The peripheral clock divider is determined by the 12-bit Clock Divider field (its maximal value is
4095) in the Clock Mode Register (CMR.DIV), allowing a peripheral clock division by up to 8190.
The divided clock is provided to both the receiver and transmitter. When this field is written to
zero, the clock divider is not used and remains inactive.
When CMR.DIV is written to a value equal to or greater than one, the divided clock has a fre-
quency of CLK_SSC divided by two times CMR.DIV. Each level of the divided clock has a
duration of the peripheral clock multiplied by CMR.DIV. This ensures a 50% duty cycle for the
divided clock regardless of whether the CMR.DIV value is even or odd.
Figure 20-5.
Table 20-2.
The transmitter clock is generated from the receiver clock, the divider clock, or an external clock
scanned on the TX_CLOCK pin. The transmitter clock is selected by writing to the Transmit
Clock Selection field in the Transmit Clock Mode Register (TCMR.CKS). The transmit clock can
Maximum
CLK_SSC / 2
Divided Clock
Divided Clock
Range of Clock Divider
CLK_SSC
CLK_SSC
Divided Clock Generation
DIV = 3
DIV = 1
CLK_SSC
/ 2
Divided Clock Frequency = CLK_SSC/2
Divided Clock Frequency = CLK_SSC/6
Clock Divider
12-bit Counter
Minimum
CLK_SSC / 8190
CMR
Divided Clock
AT32UC3B
263
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