IA186EB Datasheet, PDF (55/85 Pages) InnovASIC, Inc – 8-Bit/16-Bit Microcontrollers

IA186EB/IA188EB
8-Bit/16-Bit Microcontrollers
Data Sheet
July 10, 2011
Table 17. Relative Timing Characteristics
Symbol
Parameter
Min Max Units
t_LHLL ale Rising to ale Falling
t – 15 – ns
t_AVLL Address Valid to ale Falling
½t –10 – ns
t_PLLL Chip Selects Valid to ale Falling
½t –10 – ns
t_LLAX Address Hold from ale Falling
½t –10 – ns
t_LLWL ale Falling to wr_n Falling
½t –15 – ns
t_LLRL ale Falling to rd_n Falling
½t –15 – ns
t_WHLH wr_n Rising to ale Rising
½t –10 – ns
t_AFRL Address Float to rd_n Falling
0
– ns
t_RLRH rd_n Falling to rd_n Rising
(2t) – 5 – ns
t_WLWH wr_n Falling to wr_n Rising
(2t) – 5 – ns
t_RHAV rd_n Rising to Address Active
t – 15 – ns
t_WHDX Output Data Hold after wr_n Rising t – 15 – ns
t_WHPH wr_n Rising to Chip Select Rising ½t –10 – ns
t_RHPH rd_n Rising to Chip Select Rising ½t –10 – ns
t_PHPL cs_n inactive to cs_n active
½t –10 – ns
t_OVRH once_n Active to resin_n Rising
t
– ns
t_RHOX once_n Hold to resin_n Rising
t
– Ns
5.1 AC Test Conditions
The AC specifications are tested with the 50-pF load shown in Figure 15. Specifications are
measured at the V_CC/2 crossing point unless otherwise specified.
Figure 15. AC Test Load
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