1125
SAM9G45 [DATASHEET]
6438K–ATARM–12-Feb-13
46.13.2.3
Write Timings
SMC
5
NBS0/A0, NBS1, NBS2/A1, NBS3, A2 -
A25 Valid before NRD High
(nrd setup + nrd pulse)* t
CPMCK -
15.4
(nrd setup + nrd pulse)*
t
CPMCK - 15.5
ns
SMC
6
NCS low before NRD High
(nrd setup + nrd pulse - ncs rd
setup) * t
CPMCK -14.7
(nrd setup + nrd pulse -
ncs rd setup) * t
CPMCK -
14.7
ns
SMC
7
NRD Pulse Width
nrd pulse * t
CPMCK - 0.5
nrd pulse * t
CPMCK - 0.2
ns
Table 46-28. SMC Read Signals - NRD Controlled (READ_MODE= 1) (Continued)
Table 46-29. SMC Read Signals - NCS Controlled (READ_MODE= 0)
Symbol
Parameter
Min
Units
VDDIOM supply
1.8V
3.3V
NO HOLD SETTINGS (ncs rd hold = 0)
SMC
8
Data Setup before NCS High
15.0
14.1
ns
SMC
9
Data Hold after NCS High
0
ns
HOLD SETTINGS (ncs rd hold
≠ 0)
SMC
10
Data Setup before NCS High
11.4
10.9
ns
SMC
11
Data Hold after NCS High
0
ns
HOLD or NO HOLD SETTINGS (ncs rd hold
≠ 0, ncs rd hold = 0)
SMC
12
NBS0/A0, NBS1, NBS2/A1, NBS3, A2 -
A25 valid before NCS High
(ncs rd setup + ncs rd pulse)*
t
CPMCK - 3.7
(ncs rd setup + ncs rd
pulse)* t
CPMCK - 4.4
ns
SMC
13
NRD low before NCS High
(ncs rd setup + ncs rd pulse - nrd
setup)* t
CPMCK - 0.8
(ncs rd setup + ncs rd pulse
- nrd setup)* t
CPMCK - 1.1
ns
SMC
14
NCS Pulse Width
ncs rd pulse length * t
CPMCK - 0.5
ncs rd pulse length * t
CPMCK
- 0.2
ns
Table 46-30. SMC Write Signals - NWE Controlled (WRITE_MODE = 1)
Symbol
Parameter
Min
Units
1.8V Supply
3.3V Supply
HOLD or NO HOLD SETTINGS (nwe hold
≠ 0, nwe hold = 0)
SMC
15
Data Out Valid before NWE High
nwe pulse * t
CPMCK - 2.9
nwe pulse * t
CPMCK - 3.6
ns
SMC
16
NWE Pulse Width
nwe pulse * t
CPMCK - 0.7
nwe pulse * t
CPMCK - 0.3
ns
SMC
17
NBS0/A0 NBS1, NBS2/A1, NBS3, A2 -
A25 valid before NWE low
nwe setup * t
CPMCK - 3.3
nwe setup * t
CPMCK - 4.1
ns
SMC
18
NCS low before NWE high
(nwe setup - ncs rd setup + nwe
pulse) * t
CPMCK - 3.1
(nwe setup - ncs rd setup +
nwe pulse) * t
CPMCK - 3.4
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 - 4.0
nwe hold * t
CPMCK - 4.6
ns