ATSAM3X4EA-AU Atmel, ATSAM3X4EA-AU Datasheet - Page 454

• Manufacturer Part Number: ATSAM3X4EA-AU
• Description: ARM Microcontrollers - MCU QFP144,GREEN, IND TEMP, MRL A
• Manufacturer: Atmel

Specifications of ATSAM3X4EA-AU

• Rohs: yes
• Core: ARM Cortex M3
• Processor Series: SAM3X
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 84 MHz
• Program Memory Size: 256 KB
• Data Ram Size: 64 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 2.4 V to 3.6 V
• Operating Temperature Range: - 40 C to +85 C
• Package / Case: LQFP-144
• Mounting Style: SMD/SMT
• Factory Pack Quantity: 60

Figure 27-19. TDF Optimization: No TDF wait states are inserted if the TDF period is over when the next access begins
27.13.3
454
454
D[15:0]
A [23:2]
NCS0
NWE
MCK
NRD
SAM3X/A
SAM3X/A
TDF Optimization Disabled (TDF_MODE = 0)
read access on NCS0 (NRD controlled)
When optimization is disabled, tdf wait states are inserted at the end of the read transfer, so that
the data float period ends when the second access begins. If the hold period of the read1 con-
trolling signal overlaps the data float period, no additional tdf wait states will be inserted.
Figure
with no TDF optimization.
• read access followed by a read access on another chip select,
• read access followed by a write access on another chip select,
• read access followed by a write access on the same chip select,
27-20,
Figure 27-21
NRD_HOLD= 4
TDF_CYCLES = 6
and
Figure 27-22
Read to Write
Wait State
NWE_SETUP= 3
illustrate the cases:
write access on NCS0 (NWE controlled)
11057B–ATARM–28-May-12
11057B–ATARM–28-May-12