AT91SAM9263 Datasheet, PDF (214/1029 Pages) ATMEL Corporation – Thumb Microcontrollers

Figure 21-33. Recommended Procedure to Switch from Slow Clock Mode to Normal Mode or from Normal Mode to Slow
Clock Mode
Slow Clock Mode
internal signal from PMC
MCK
A[25:2]
NBS0, NBS1,
NBS2, NBS3,
A0,A1
NWE
NCS
1
1
1
SLOW CLOCK MODE WRITE
2
3
2
IDLE STATE
NORMAL MODE WRITE
Reload Configuration
Wait State
214 AT91SAM9263 Preliminary
6249B–ATARM–14-Dec-06