AT32UC3A0512-ALTTA Atmel, AT32UC3A0512-ALTTA Datasheet - Page 399

• 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: -

27.6.8.2
Figure 27-33. Clock Rate Transition Occurs while the SMC is Performing a Write Operation
32058J–AVR32–04/11
Internal signal from PM
Slow Clock Mode
NBS0, NBS1,
Switching from (to) Slow Clock Mode to (from) Normal Mode
A0, A1
CLK_SMC
This write cycle finishes with the slow clock mode set
A[25:2]
NWE
NCS
Of parameters after the clock rate transition
When switching from slow clock mode to the normal mode, the current slow clock mode transfer
is completed at high clock rate, with the set of slow clock mode parameters.See
page
Figure 27-34
other.
SLOW CLOCK MODE WRITE SLOW CLOCK MODE WRITE
399. The external device may not be fast enough to support such timings.
1
NWE_CYCLE = 3
illustrates the recommended procedure to properly switch from one mode to the
1
1
1
1
Slow clock mode transition is detected:
1
Reload Configuration Wait State
2
NORMAL MODE WRITE
NWE_CYCLE = 7
3
AT32UC3A
Figure 27-33 on
2
399