Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD データシート
製品コード
AT32UC3A3-XPLD
987
32072H–AVR32–10/2012
AT32UC3A3
36.15 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.
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 36-39. Flash Operating Frequency
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
F
FOP
Flash Operating Frequency
FWS = 0
High Speed Read Mode Disable
-40°C < Ambient Temperature < 85°C
36
MHz
FWS = 1
High Speed Read Mode Disable
-40°C < Ambient Temperature < 85°C
66
MHz
FWS = 0
High Speed Read Mode Enable
-40°C < Ambient Temperature < 70°C
42
MHz
FWS = 1
High Speed Read Mode Enable
-40°C < Ambient Temperature < 70°C
84
MHz
Table 36-40. Parts Programming Time
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
T
FPP
Page Programming Time
5
ms
T
FFP
Fuse Programming Time
0.5
ms
T
FCE
Chip erase Time
8
ms
Table 36-41. 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