ATSAM3X4EA-AU Atmel, ATSAM3X4EA-AU Datasheet - Page 463

• 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

27.15.2
Figure 27-29. Clock Rate Transition Occurs while the SMC is Performing a Write Operation
11057B–ATARM–28-May-12
11057B–ATARM–28-May-12
internal signal from PMC
Switching from (to) Slow Clock Mode to (from) Normal Mode
Slow Clock Mode
NBS0, NBS1,
A0, A1
This write cycle finishes with the slow clock mode set
A [23:2]
NWE
MCK
NCS
of parameters after the clock rate transition
When switching from slow clock mode to normal mode, the current slow clock mode transfer is
completed at high clock rate, with the set of slow clock mode parameters. See
external device may not be fast enough to support such timings.
Figure 27-30
other.
SLOW CLOCK MODE WRITE
1
NWE_CYCLE = 3
illustrates the recommended procedure to properly switch from one mode to the
1
1
SLOW CLOCK MODE WRITE
1
1
Slow clock mode transition is detected:
1
Reload Configuration Wait State
2
NORMAL MODE WRITE
NWE_CYCLE = 7
3
2
SAM3X/A
SAM3X/A
Figure
27-29. The
463
463