AT32UC3A0512-ALTTA Atmel, AT32UC3A0512-ALTTA Datasheet - Page 387
AT32UC3A0512-ALTTA
Manufacturer Part Number
AT32UC3A0512-ALTTA
Description
IC MCU AVR32 512K FLASH 144LQFP
Manufacturer
Atmel
Series
AVR®32 UC3r
Datasheet
1.ATEVK1104.pdf
(826 pages)
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
-
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27.6.5.3
32058J–AVR32–04/11
– User Procedure
– Slow Clock Mode Transition
Reload User Configuration Wait State
Figure 27-20. Early Read Wait State: NWE-controlled Write with No Hold Followed by a Read
The user may change any of the configuration parameters by writing the SMC user interface.
When detecting that a new user configuration has been written in the user interface, the SMC
inserts a wait state before starting the next access. The so called “Reload User Configuration
Wait State” is used by the SMC to load the new set of parameters to apply to next accesses.
The Reload Configuration Wait State is not applied in addition to the Chip Select Wait State. If
accesses before and after re-programming the user interface are made to different devices
(Chip Selects), then one single Chip Select Wait State is applied.
On the other hand, if accesses before and after writing the user interface are made to the same
device, a Reload Configuration Wait State is inserted, even if the change does not concern the
current Chip Select.
To insert a Reload Configuration Wait State, the SMC detects a write access to any MODE reg-
ister of the user interface. If the user only modifies timing registers (SETUP, PULSE, CYCLE
registers) in the user interface, he must validate the modification by writing the MODE, even if no
change was made on the mode parameters.
A Reload Configuration Wait State is also inserted when the Slow Clock Mode is entered or
exited, after the end of the current transfer (see
Internal write controlling signal
external write controlling
signal(NWE)
with one Set-up Cycle.
NBS0, NBS1,
A0, A1
D[15:0]
CLK_SMC
A[25:2]
NRD
(WRITE_MODE = 1)
Write cycle
No hold
”Slow Clock Mode” on page
Early Read
Wait state
Read setup=1
(READ_MODE=0 or READ_MODE=1)
AT32UC3A
Read cycle
398).
387
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