Atmel AT32UC3A3128, Manual

Page: 978 / 1021

978
32072H–AVR32–10/2012
AT32UC3A3
Note: 1. hold length = total cycle duration - setup duration - pulse duration. “hold length” is for “ncs wr hold length” or “nwe hold
length"
Table 36-32. SMC Read Signals with no Hold Settings
Symbol Parameter Min. Unit
NRD Controlled (READ_MODE = 1)
SMC
19
Data Setup before NRD High 13.7 ns
SMC
20
Data Hold after NRD High 1 ns
NRD Controlled (READ_MODE = 0)
SMC
21
Data Setup before NCS High 13.3 ns
SMC
22
Data Hold after NCS High 0 ns
Table 36-33. SMC Write Signals with Hold Settings
Symbol Parameter Min. Unit
NRD Controlled (READ_MODE = 1)
SMC
23
Data Out Valid before NWE High (nwe pulse length - 1) * t
CPSMC
- 0.9 ns
SMC
24
Data Out Valid after NWE High
(1)
nwe hold length * t
CPSMC
- 6 ns
SMC
25
NWE High to NBS0/A0 Change
(1)
nwe hold length * t
CPSMC
- 1.9 ns
SMC
26
NWE High to NBS1 Change
(1)
nwe hold length * t
CPSMC
- 1.9 ns
SMC
29
NWE High to A1 Change
(1)
nwe hold length * t
CPSMC
- 1.9 ns
SMC
31
NWE High to A2 - A23 Change
(1)
nwe hold length * t
CPSMC
- 1.7 ns
SMC
32
NWE High to NCS Inactive
(1)
(nwe hold length - ncs wr hold length)* t
CPSMC
- 2.9 ns
SMC
33
NWE Pulse Width nwe pulse length * t
CPSMC
- 0.9 ns
NRD Controlled (READ_MODE = 0)
SMC
34
Data Out Valid before NCS High (ncs wr pulse length - 1)* t
CPSMC
- 4.6 ns
SMC
35
Data Out Valid after NCS High
(1)
ncs wr hold length * t
CPSMC
- 5.8 ns
SMC
36
NCS High to NWE Inactive
(1)
(ncs wr hold length - nwe hold length)* t
CPSMC
- 0.6 ns
Table 36-34. SMC Write Signals with No Hold Settings (NWE Controlled only)
Symbol Parameter Min. Unit
SMC
37
NWE Rising to A2-A25 Valid 5.4 ns
SMC
38
NWE Rising to NBS0/A0 Valid 5 ns
SMC
39
NWE Rising to NBS1 Change 5 ns
SMC
40
NWE Rising to A1/NBS2 Change 5 ns
SMC
41
NWE Rising to NBS3 Change 5 ns
SMC
42
NWE Rising to NCS Rising 5.1 ns