Datasheet

SAM9G45 [DATASHEET]
Atmel-6438O-ATARM-SAM9G45-Datasheet_08-Dec-15
1168
45.13.2.2 Read Timings
Table 45-29. SMC Read Signals - NRD Controlled (READ_MODE = 1)
Symbol Parameter
Min
Unit1.8V VDDIOM Supply 3.3V VDDIOM Supply
NO HOLD SETTINGS (nrd hold = 0)
SMC
1
Data Setup before NRD High 12.0 11.2 ns
SMC
2
Data Hold after NRD High 0 0 ns
HOLD SETTINGS (nrd hold ≠ 0)
SMC
3
Data Setup before NRD High 8.7 8.2 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
- 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 45-30. SMC Read Signals - NCS Controlled (READ_MODE = 0)
Symbol Parameter
Min
Unit1.8V VDDIOM Supply 3.3V VDDIOM Supply
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 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 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