Atmel Evaluation Kit for AT32uC3A0512, 32-Bit AVR Microcontroller Atmel ATEVK1105 ATEVK1105 Hoja De Datos
Los códigos de productos
ATEVK1105
774
AT32UC3A
38.9
EBI Timings
These timings are given for worst case process, T = 85⋅C, VDDCORE = 1.65V, VDDIO = 3V and 40 pF load capacitance.
Note:
1. The maximum frequency of the SMC interface is the same as the max frequency for the HSB.
Note:
1. hold length = total cycle duration - setup duration - pulse duration. “hold length” is for “ncs rd hold length” or “nrd hold length”.
Table 38-22.
SMC Clock Signal.
Symbol
Parameter
Max
Units
1/(t
CPSMC
)
SMC Controller Clock Frequency
1/(t
cpcpu
)
MHz
Table 38-23.
SMC Read Signals with Hold Settings
Symbol
Parameter
Min
Units
NRD Controlled (READ_MODE = 1)
SMC
1
Data Setup before NRD High
12
ns
SMC
2
Data Hold after NRD High
0
SMC
3
NRD High to NBS0/A0 Change
nrd hold length * t
CPSMC
-
1.3
SMC
4
NRD High to NBS1 Change
nrd hold length * t
CPSMC
-
1.3
SMC
5
NRD High to NBS2/A1 Change
nrd hold length * t
CPSMC
-
1.3
SMC
6
NRD High to NBS3 Change
nrd hold length * t
CPSMC
-
1.3
SMC
7
NRD High to A2 - A25 Change
nrd hold length * t
CPSMC
-
1.3
SMC
8
NRD High to NCS Inactive
(nrd hold length - ncs rd hold length) * t
CPSMC
-
2.3
SMC
9
NRD Pulse Width
nrd pulse length * t
CPSMC
-
1.4
NRD Controlled (READ_MODE = 0)
SMC
10
Data Setup before NCS High
11.5
ns
SMC
11
Data Hold after NCS High
0
SMC
12
NCS High to NBS0/A0 Change
ncs rd hold length * t
CPSMC
-
2.3
SMC
13
NCS High to NBS0/A0 Change
ncs rd hold length * t
CPSMC
-
2.3
SMC
14
NCS High to NBS2/A1 Change
ncs rd hold length * t
CPSMC
-
2.3
SMC
15
NCS High to NBS3 Change
ncs rd hold length * t
CPSMC
-
2.3
SMC
16
NCS High to A2 - A25 Change
ncs rd hold length * t
CPSMC
-
4
SMC
17
NCS High to NRD Inactive
ncs rd hold length - nrd hold length)* t
CPSMC
-
1.3
SMC
18
NCS Pulse Width
ncs rd pulse length * t
CPSMC
-
3.6
32058K
AVR32-01/12