AT91SAM9261_14 Datasheet, PDF (678/749 Pages) ATMEL Corporation – DSP Instruction Extensions

As T_SLCK is the period of the external 32.768 kHz oscillator.
– T_RES = 50 µs
– T1 = 91.5 µs
– T2 = 488 µs
39.8 EBI Timings
These timings are given for worst case Process, T° = 85°C and VDDCORE = Min.
First column for VDDIOM in 1.8V Supply range (1.65V-1.95V) and 30 pF load capacitance.
Second column for VDDIOM in 3.3V Supply range (3.0V-3.6V) and 50 pF load capacitance.
Table 39-17. SMC Read Signals with Hold Settings
Parameter
Min
VDDIOM Supply
1.8V
3.3V
Symbol VDDCORE Supply
1.08V
1.2V
1.08V
1.2V
NRD Controlled (READ_MODE = 1)
SMC₁
SMC₂
SMC₃
Data Setup before NRD High
Data Hold after NRD High
NRD High to NBS0/A0 Change ⁽¹⁾
13.5
0
nrd hold length
* t_CPMCK + 0.2
10.6
0
nrd hold
length * t_CPMCK
+ 0.2
10.7
0
nrd hold
length * t_CPMCK
+ 0.2
8.5
0
nrd hold length
* t_CPMCK + 0.2
SMC₄
NRD High to NBS1 Change ⁽¹⁾
nrd hold length
* t_CPMCK + 0.2
nrd hold
length * t_CPMCK
+ 0.2
nrd hold
length * t_CPMCK
+ 0.1
nrd hold length
* t_CPMCK + 0.1
SMC₅
NRD High to NBS2/A1 Change ⁽¹⁾
nrd hold length
* t_CPMCK + 0.2
nrd hold
length * t_CPMCK
+ 0.2
nrd hold
length * t_CPMCK
+ 0.2
nrd hold length
* t_CPMCK + 0.2
SMC₆
NRD High to NBS3 Change ⁽¹⁾
nrd hold length
* t_CPMCK + 0.1
nrd hold
length * t_CPMCK
+ 0.1
nrd hold
length * t_CPMCK
+ 0.1
nrd hold length
* t_CPMCK + 0.1
SMC₇
NRD High to A2 - A25 Change ⁽¹⁾
nrd hold length
* t_CPMCK - 0.5
nrd hold
length * t_CPMCK
- 0.5
nrd hold
length * t_CPMCK
- 0.7
nrd hold length
* t_CPMCK - 0.5
SMC₈
NRD High to NCS Inactive ⁽¹⁾
SMC₉
NRD Pulse Width
(nrd hold
length - ncs rd
hold length) *
t_CPMCK - 0.4
nrd pulse
length * t_CPMCK
- 0.2
(nrd hold
length - ncs rd
hold length) *
t_CPMCK - 0.3
nrd pulse
length * t_CPMCK
- 0.2
(nrd hold
length - ncs rd
hold length) *
t_CPMCK - 0.4
nrd pulse
length * t_CPMCK
+ 0.1
(nrd hold length
- ncs rd hold
length) * t_CPMCK
- 0.3
nrd pulse length
* t_CPMCK - 0.0
NCS Controlled (READ_MODE = 0)
SMC₁₀
SMC₁₁
Data Setup before NCS High
Data Hold after NCS High
16.5
12.7
13.6
10.6
0
0
0
0
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
678 AT91SAM9261
6062N–ATARM–3-Oct-11