AT32UC3A0512-ALUT Atmel, AT32UC3A0512-ALUT Datasheet - Page 307
AT32UC3A0512-ALUT
Manufacturer Part Number
AT32UC3A0512-ALUT
Description
IC MCU AVR32 512KB FLASH 144LQFP
Manufacturer
Atmel
Series
AVR®32 UC3r
Specifications of AT32UC3A0512-ALUT
Core Processor
AVR
Core Size
32-Bit
Speed
66MHz
Connectivity
EBI/EMI, Ethernet, I²C, SPI, SSC, UART/USART, USB OTG
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
109
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
64K 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
144-LQFP
Package
144LQFP
Device Core
AVR32
Family Name
AT32
Maximum Speed
66 MHz
Operating Supply Voltage
1.8|3.3 V
Data Bus Width
32 Bit
Number Of Programmable I/os
69
Interface Type
Ethernet/I2S/JTAG/SPI/TWI/USART
Number Of Timers
3
Processor Series
AT32UC3x
Core
AVR32
Data Ram Size
64 KB
Maximum Clock Frequency
66 MHz
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR32, EWAVR32-BL, KSK-EVK1100-PL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, ATEXTWIFI, ATEVK1100, ATEVK1105, ATAVRRZ600
Minimum Operating Temperature
- 40 C
For Use With
ATEVK1105 - KIT EVAL FOR AT32UC3A0ATAVRONEKIT - KIT AVR/AVR32 DEBUGGER/PROGRMMR770-1008 - ISP 4PORT ATMEL AVR32 MCU SPIATEVK1100 - KIT DEV/EVAL FOR AVR32 AT32UC3A
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT32UC3A0512-ALUT
Manufacturer:
ATMEL
Quantity:
2 155
Part Number:
AT32UC3A0512-ALUT
Manufacturer:
AT
Quantity:
20 000
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26.7.1.3
Figure 26-4. Fractional Baud Rate Generator
26.7.1.4
32058J–AVR32–04/11
CLK_USART/DIV
CLK
CLK_USART
Reserved
Fractional Baud Rate in Asynchronous Mode
Baud Rate in Synchronous Mode or SPI Mode
USCLKS
1
2
3
0
The Baud Rate generator previously defined is subject to the following limitation: the output fre-
quency changes by only integer multiples of the reference frequency. An approach to this
problem is to integrate a fractional N clock generator that has a high resolution. The generator
architecture is modified to obtain Baud Rate changes by a fraction of the reference source clock.
This fractional part is programmed with the FP field in the Baud Rate Generator Register
(BRGR). If FP is not 0, the fractional part is activated. The resolution is one eighth of the clock
divider. This feature is only available when using USART normal mode. The fractional Baud
Rate is calculated using the following formula:
The modified architecture is presented below:
If the USART is programmed to operate in synchronous mode, the selected clock is simply
divided by the field CD in BRGR.
In synchronous mode, if the external clock is selected (USCLKS = 3), the clock is provided
directly by the signal on the USART CLK pin. No division is active. The value written in BRGR
Baudrate
BaudRate
16-bit Counter
CD
=
---------------------------------------------------------------- - -
⎛
⎝
8 2 Over
Modulus
=
Control
(
FP
SelectedClock
------------------------------------- - -
SelectedClock
–
CD
) CD
⎛
⎝
+
USCLKS = 3
glitch-free
FP
------ -
FP
logic
8
⎞
⎠
⎞
⎠
SYNC
0
CD
>1
0
1
0
1
OVER
Sampling
Divider
FIDI
AT32UC3A
0
1
SYNC
CLK
BaudRate
Sampling
Clock
Clock
307
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