Datasheet

1035
SAM9263 [DATASHEET]
Atmel-6249N-ATARM-SAM9263-Datasheet_14-Mar-16
46.9.2.2 Write Timings
Notes: 1. hold length = total cycle duration - setup duration - pulse duration. “hold length” is for “ncs wr hold length” or “NWE hold
length”.
SMC
14
NCS Pulse Width
ncs rd pulse
length * t
CPMCK
-
0.5
nrd pulse * t
CPMCK
- 0.4
nrd pulse * t
CPMCK
- 0.9
nrd pulse * t
CPMCK
- 0.8
ns
Table 46-20. SMC Write Signals - NWE Controlled (WRITE_MODE = 1)
Symbol
Parameter Min Unit
VDDIOM supply 1.8V 3.3V Unit
VDDCORE supply 1.08V 1.3V 1.08V 1.3V
HOLD or NO HOLD SETTINGS (nwe hold ≠ 0, nwe hold = 0)
SMC
15
Data Out Valid before NWE High
nwe pulse * t
CPMCK
- 0.9
nwe pulse * t
CPMCK
- 0.5
nwe pulse * t
CPMCK
- 1.2
nwe pulse * t
CPMCK
- 0.8
ns
SMC
16
NWE Pulse Width
nwe pulse * t
CPMCK
- 0.5
nwe pulse * t
CPMCK
- 0.4
nwe pulse * t
CPMCK
- 0.8
nwe pulse * t
CPMCK
- 0.7
ns
SMC
17
NBS0/A0 NBS1, NBS2/A1, NBS3,
A2–A25 valid before NWE low
nwe setup * t
CPMCK
- 1.1
nwe setup * t
CPMCK
- 0.9
nwe setup * t
CPMCK
- 1.4
nwe setup * t
CPMCK
- 1.2
ns
SMC
18
NCS low before NWE high
(nwe setup - ncs
rd setup + nwe
pulse) * t
CPMCK
-
1.3
(nwe setup - ncs
rd setup + nwe
pulse) * t
CPMCK
-
1.1
(nwe setup - ncs
rd setup + nwe
pulse) * t
CPMCK
-
1.7
(nwe setup - ncs
rd setup + nwe
pulse) * t
CPMCK
-
1.5
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
-
3.0
nwe hold * t
CPMCK
-
2.6
nwe hold * t
CPMCK
-
3.2
nwe hold * t
CPMCK
-
2.8
ns
SMC
20
NWE High to NCS Inactive
(1)
(nwe hold - ncs wr
hold) * t
CPMCK
- 0.6
(nwe hold - ncs wr
hold) * t
CPMCK
- 0.5
(nwe hold - ncs wr
hold) * t
CPMCK
- 0.6
(nwe hold - ncs wr
hold) * t
CPMCK
- 0.5
ns
NO HOLD SETTINGS (nwe hold = 0)
SMC
21
NWE High to Data OUT, NBS0/A0
NBS1, NBS2/A1, NBS3, A2–A25,
NCS change
(1)
3.5 3.5 3.3 3.3 ns
Table 46-19. SMC Read Signals - NCS Controlled (READ_MODE = 0) (Continued)
Symbol
Parameter Min
Unit
VDDIOM supply 1.8V 3.3V
VDDCORE supply 1.08V 1.3V 1.08V 1.3V