
83
32117DS–AVR-01/12
AT32UC3C
Note:
1. These values are based on simulation and characterization of other AVR microcontrollers manufactured in the same pro-
cess technology. These values are not covered by test limits in production.
Figure 7-17. SMC Signals for NCS Controlled Accesses
Table 7-56.
SMC Write Signals with No Hold Settings (NWE Controlled only)
(1)Symbol
Parameter
Conditions
Min
Units
SMC37
NWE rising to A2-A25 valid
VVDD = 3.0V,
drive strength of the pads
set to the lowest,
external capacitor = 40pF
8.7
ns
SMC
38
NWE rising to NBS0/A0 valid
7.6
SMC40
NWE rising to A1/NBS2 change
8.7
SMC42
NWE rising to NCS rising
8.4
SMC
43
Data Out valid before NWE rising
(nwe pulse length - 1) * tCPSMC - 1.2
SMC44
Data Out valid after NWE rising
8.4
SMC45
NWE pulse width
nwe pulse length * tCPSMC - 0
NRD
NCS
D0 - D15
NWE
A2-A25
A0/A1/NBS[3:0]
SMC34
SMC35
SMC10
SMC11
SMC16
SMC15
SMC22
SMC21
SMC17
SMC18
SMC14
SMC13
SMC12
SMC18
SMC17
SMC16
SMC15
SMC14
SMC13
SMC12
SMC18
SMC36
SMC16
SMC15
SMC14
SMC13
SMC12