Datasheet

1153
SAM4S Series [DATASHEET]
11100F–ATARM–29-Jan-14
44.12.6.2 Write Timings
Table 44-66. SMC Write Signals - NWE Controlled (WRITE_MODE = 1)
Symbol Parameter
Min Max
Units1.8V
(2)
3.3V
(3)
1.8V
(2)
3.3V
(3)
HOLD or NO HOLD Settings (NWE hold ≠ 0, NWE hold = 0)
SMC
15
Data Out Valid before NWE High
NWE pulse * t
CPMCK
-6.9
NWE pulse *
t
CPMCK
- 3.3
——ns
SMC
16
NWE Pulse Width
NWE pulse * t
CPMCK
- 7.3
NWE pulse *
t
CPMCK
- 6.3
——ns
SMC
17
A0 - A22 Valid before NWE Low
NWE setup * t
CPMCK
- 7.2
NWE setup *
t
CPMCK
- 7.0
——ns
SMC
18
NCS Low before NWE High
(NWE setup - NCS
rd setup + NWE
pulse) * t
CPMCK
-4.1
(NWE setup -
NCS rd setup +
NWE pulse) *
t
CPMCK
- 3.1
——ns
HOLD Settings (NWE hold ≠ 0)
SMC
19
NWE High to Data OUT, NBS0/A0
NBS1, NBS2/A1, NBS3, A2 - A25
Change
NWE hold * t
CPMCK
-
12.2
NWE hold * t
CPMCK
- 6.9
——ns
SMC
20
NWE High to NCS Inactive
(1)
(NWE hold - NCS
wr hold)* t
CPMCK
-
8.6
(NWE hold - NCS
wr hold)* t
CPMCK
-
5.0
——ns
NO HOLD Settings (NWE hold = 0)
SMC
21
NWE High to Data OUT, NBS0/A0
NBS1, NBS2/A1, NBS3, A2 - A25,
NCS change
(1)
3.0 2.8 — — ns