AT32UC3C1512C Automotive Atmel Corporation, AT32UC3C1512C Automotive Datasheet - Page 335

• Manufacturer Part Number: AT32UC3C1512C Automotive
• Manufacturer: Atmel Corporation

18.6.8.2
Figure 18-31. Clock Rate Transition Occurs while the SMC is Performing a Write Operation
9166C–AVR-08/11
Internal signal from PM
Slow Clock Mode
NBS0, NBS1,
Switching from (to) slow clock mode to (from) normal mode
A[AD_MSB:2]
A0, A1
CLK_SMC
This write cycle finishes with the slow clock mode set
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
on page
Figure 18-32 on page 336
mode to the other.
SLOW CLOCK MODE WRITE SLOW CLOCK MODE WRITE
335. The external device may not be fast enough to support such timings.
1
NWECYCLE = 3
1
illustrates the recommended procedure to properly switch from one
1
1
1
Slow clock mode transition is detected:
1
Reload Configuration Wait State
2
NORMAL MODE WRITE
NWECYCLE = 7
3
AT32UC3C
2
Figure 18-31
335