AT32UC3A364-ALUT Atmel, AT32UC3A364-ALUT Datasheet - Page 249

• Manufacturer Part Number: AT32UC3A364-ALUT
• Description: IC MCU 64KB FLASH 144LQFP
• Manufacturer: Atmel
• Series: AVR®32 UC3r

Specifications of AT32UC3A364-ALUT

• Core Processor: AVR
• Core Size: 32-Bit
• Speed: 66MHz
• Connectivity: EBI/EMI, I²C, IrDA, MMC, SPI, SSC, UART/USART, USB OTG
• Peripherals: Brown-out Detect/Reset, DMA, POR, WDT
• Number Of I /o: 110
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 128K 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
• Processor Series: AT32UC3x
• Core: AVR32
• Data Bus Width: 32 bit
• Data Ram Size: 96 KB
• Interface Type: IrDA/SCI/SCIF/UDI
• Maximum Clock Frequency: 66 MHz
• Number Of Timers: 3
• Operating Supply Voltage: 3 V to 3.6 V
• 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, ATEVK1104
• Minimum Operating Temperature: - 40 C
• Controller Family/series: AT32UC3A
• No. Of I/o's: 110
• Ram Memory Size: 64KB
• Cpu Speed: 66MHz
• No. Of Timers: 2
• Rohs Compliant: Yes
• For Use With: ATEVK1104 - KIT DEV/EVAL FOR AVR32 AT32UC3AATAVRONEKIT - KIT AVR/AVR32 DEBUGGER/PROGRMMRATEVK1100 - KIT DEV/EVAL FOR AVR32 AT32UC3A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

AT32UC3A3/A4
For ECC-RS, in order to perform 4-error correction per 512 bytes of 8-bit words, the codeword
have to be generated by the RS4 Encoder module and stored into the NAND Flash extra area,
according to the scheme shown in
Figure 17-5 on page 249
Figure 17-5. RS Codeword Generation
Feedback
α
α
α
α
α
α
α
α
395
28
603
383
539
500
397
402
+
DataIn
+
+
+
+
+
+
+
CW7
CW6
CW5
CW4
CW3
CW2
CW1
CW0
In read mode, firstly, the detection for any error is done with the partial syndrome module. It is
the responsibility of the ECC-RS Controller to determine after receiving the old codeword stored
in the extra area if there is any error on data and /or on the old codeword. If all syndromes (Si)
are equal to zero, there is no error, otherwise a polynomial representation is written into
CWPS00 to CWPS79 registers. The Partial Syndrome module performs an algorithm according
to the scheme in
Figure 17-6 on page 249
Figure 17-6. Partial Syndrome Block Diagram
S7
Mult α
i
x
S2
x
S1
x
RegOct
S0
DataIn(x)
If the Correction Enable bit is set in the ECC Mode Register (MD.CORRS4) then the polynomial
representation of error are sent to the polynomial processor. The aim of this module is to per-
form the polynomial division in order to calculate two polynomials, Omega (Z) and Lambda (Z),
which are necessary for the two following modules (Chien Search and Error Evaluator). In order
to perform addition, multiplication, and division a Read Only Memory (ROM) has been added
containing the 1024 elements of the Galois field. Both Chien Search and Error Evaluator work in
parallel. The Error Evaluator has the responsibility to determine the Nth error value in the data
and in the old codeword according to the scheme in
Figure 17-7 on page 250
249
32072C–AVR32–2010/03