Datasheet

54
32059L–AVR32–01/2012
AT32UC3B
9.12 Flash Memory Characteristics
The following table gives the device maximum operating frequency depending on the field FWS
of the Flash FSR register. This field defines the number of wait states required to access the
Flash Memory. Flash operating frequency equals the CPU/HSB frequency.
Table 9-28. Flash Operating Frequency
Symbol Parameter Conditions Min. Typ. Max. Unit
F
FOP
Flash Operating Frequency
FWS = 0 33 MHz
FWS = 1 60 MHz
Table 9-29. Programming TIme
Symbol Parameter Conditions Min. Typ. Max. Unit
T
FPP
Page Programming Time 4 ms
T
FFP
Fuse Programming Time 0.5 ms
T
FCE
Chip Erase Time 4ms
Table 9-30. Flash Parameters
Symbol Parameter Conditions Min. Typ. Max. Unit
N
FARRAY
Flash Array Write/Erase cycle 100K Cycle
N
FFUSE
General Purpose Fuses write cycle 1000 Cycle
T
FDR
Flash Data Retention Time 15 Year