Datasheet

1106
SAM9X25 [DATASHEET]
11054E–ATARM–10-Mar-2014
46.16.2.2 Read Timings
Table 46-32. SMC Read Signals - NRD Controlled (READ_MODE = 1)
Symbol Parameter
Min
UnitVDDIOM supply 1.8V VDDIOM supply 3.3V
NO HOLD SETTINGS (nrd hold = 0)
SMC
1
Data Setup before NRD High 13.6 11.7 ns
SMC
2
Data Hold after NRD High 0 0 ns
HOLD SETTINGS (nrd hold ≠ 0)
SMC
3
Data Setup before NRD High 10.9 9.0 ns
SMC
4
Data Hold after NRD High 0 0 ns
HOLD or NO HOLD SETTINGS (nrd hold ≠ 0, nrd hold =0)
SMC
5
NBS0/A0, NBS1, NBS2/A1, NBS3, A2–A25
valid before NRD High
(nrd setup + nrd pulse) × t
CPMCK
- 4.7
(nrd setup + nrd pulse) × t
CPMCK
- 4.7
ns
SMC
6
NCS low before NRD High
(nrd setup + nrd pulse - ncs rd
setup) × t
CPMCK
- 4.3
(nrd setup + nrd pulse - ncs rd
setup) × t
CPMCK
- 4.4
ns
SMC
7
NRD Pulse Width nrd pulse × t
CPMCK
- 3.2 nrd pulse × t
CPMCK
- 3.3 ns
Table 46-33. SMC Read Signals - NCS Controlled (READ_MODE = 0)
Symbol Parameter
Min
UnitVDDIOM supply 1.8V VDDIOM supply 3.3V
NO HOLD SETTINGS (ncs rd hold = 0)
SMC
8
Data Setup before NCS High 26.9 25.0 ns
SMC
9
Data Hold after NCS High 0 0 ns
HOLD SETTINGS (ncs rd hold ≠ 0)
SMC
10
Data Setup before NCS High 12.3 10.4 ns
SMC
11
Data Hold after NCS High 0 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
- 18.4
(ncs rd setup + ncs rd pulse) ×
t
CPMCK
- 18.4
ns
SMC
13
NRD low before NCS High
(ncs rd setup + ncs rd pulse -
nrd setup) × t
CPMCK
- 2.0
(ncs rd setup + ncs rd pulse -
nrd setup) × t
CPMCK
- 2.1
ns
SMC
14
NCS Pulse Width
ncs rd pulse length × t
CPMCK
-
4.0
ncs rd pulse length × t
CPMCK
-
4.0
ns