AT32UC3A0512-ALTTA Atmel, AT32UC3A0512-ALTTA Datasheet - Page 219

• Manufacturer Part Number: AT32UC3A0512-ALTTA
• Description: IC MCU AVR32 512K FLASH 144LQFP
• Manufacturer: Atmel
• Series: AVR®32 UC3r

Specifications of AT32UC3A0512-ALTTA

• 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
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Otherwise, the following equations determine the delay:
If FDIV is 0:
If FDIV is 1:
• DLYBCT: Delay Between Consecutive Transfers
This field defines the delay between two consecutive transfers with the same peripheral without removing the chip select.
The delay is always inserted after each transfer and before removing the chip select if needed.
When DLYBCT equals zero, no delay between consecutive transfers is inserted and the clock keeps its duty cycle over the
character transfers.
Otherwise, the following equation determines the delay:
If FDIV is 0:
If FDIV is 1:
N = 32
32058J-AVR32-04/11
Delay Before SPCK
Delay Before SPCK
Delay Between Consecutive Transfers
Delay Between Consecutive Transfers
Note:
N = 32
=
=
DLYBS
------------------ - -
N
---------------------------- - -
MCK
×
MCK
DLYBS
=
=
32
----------------------------------- -
32
---------------------------------------------- - -
×
×
MCK
DLYBCT
N
MCK
×
DLYBCT
+
---------------- - -
2MCK
SCBR
+
N
------------------------ -
2MCK
×
SCBR
AT32UC3A
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