Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet
Product codes
ATSAM4S-WPIR-RD
1175
SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
44.12.6.2Write Timings
Table 44-67.
SMC Write Signals - NWE Controlled (WRITE_MODE = 1)
Symbol
Parameter
Min
Max
Units
3.3V
1.8V
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
(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
3.0
2.8
—
—
ns