
1256
SAM9X35 [DATASHEET]
11055E–ATARM–10-Mar-2014
47.16.2.2 Read Timings
Table 47-33. SMC Read Signals - NRD Controlled (READ_MODE = 1)
Symbol
Parameter
Min
Unit
VDDIOM supply 1.8V
VDDIOM supply 3.3V
NO HOLD SETTINGS (nrd hold = 0)
SMC1
Data Setup before NRD High
13.6
11.7
ns
SMC2
Data Hold after NRD High
0
ns
HOLD SETTINGS (nrd hold
≠ 0)
SMC3
Data Setup before NRD High
10.9
9.0
ns
SMC4
Data Hold after NRD High
0
ns
HOLD or NO HOLD SETTINGS (nrd hold
≠ 0, nrd hold =0)
SMC5
NBS0/A0, NBS1, NBS2/A1, NBS3, A2–A25
Valid before NRD High
(nrd setup + nrd pulse)
× tCPMCK
- 4.7
(nrd setup + nrd pulse)
× tCPMCK
- 4.7
ns
SMC6
NCS low before NRD High
(nrd setup + nrd pulse - ncs rd
setup)
× tCPMCK - 4.3
(nrd setup + nrd pulse - ncs rd
setup)
× tCPMCK - 4.4
ns
SMC7
NRD Pulse Width
nrd pulse
× tCPMCK - 3.2
nrd pulse
× tCPMCK - 3.3
ns
Table 47-34. SMC Read Signals - NCS Controlled (READ_MODE = 0)
Symbol
Parameter
Min
Unit
VDDIOM supply 1.8V
VDDIOM supply 3.3V
NO HOLD SETTINGS (ncs rd hold = 0)
SMC8
Data Setup before NCS High
26.9
25.0
ns
SMC9
Data Hold after NCS High
0
ns
HOLD SETTINGS (ncs rd hold
≠ 0)
SMC10
Data Setup before NCS High
12.3
10.4
ns
SMC11
Data Hold after NCS High
0
ns
HOLD or NO HOLD SETTINGS (ncs rd hold
≠ 0, ncs rd hold = 0)
SMC12
NBS0/A0, NBS1, NBS2/A1, NBS3, A2–A25
valid before NCS High
(ncs rd setup + ncs rd pulse)
×
tCPMCK - 18.4
(ncs rd setup + ncs rd pulse)
×
tCPMCK - 18.4
ns
SMC13
NRD low before NCS High
(ncs rd setup + ncs rd pulse -
nrd setup)
× tCPMCK - 2.0
(ncs rd setup + ncs rd pulse -
nrd setup)
× tCPMCK - 2.1
ns
SMC14
NCS Pulse Width
ncs rd pulse length
× tCPMCK -
4.0
ncs rd pulse length
× tCPMCK -
4.0
ns