IA186EB/IA188EB
Data Sheet
8-Bit/16-Bit Microcontrollers
July 10, 2011
Table 17. Relative Timing Characteristics
Symbol
tLHLL
tAVLL
tPLLL
tLLAX
Parameter
ale Rising to ale Falling
Min
Max Units
t – 15
½t –10
½t –10
½t –10
½t –15
½t –15
½t –10
0
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Ns
Address Valid to ale Falling
Chip Selects Valid to ale Falling
Address Hold from ale Falling
ale Falling to wr_n Falling
ale Falling to rd_n Falling
wr_n Rising to ale Rising
Address Float to rd_n Falling
rd_n Falling to rd_n Rising
wr_n Falling to wr_n Rising
rd_n Rising to Address Active
tLLWL
tLLRL
tWHLH
tAFRL
tRLRH
tWLWH
tRHAV
tWHDX
tWHPH
tRHPH
tPHPL
tOVRH
tRHOX
(2t) – 5
(2t) – 5
t – 15
Output Data Hold after wr_n Rising t – 15
wr_n Rising to Chip Select Rising
rd_n Rising to Chip Select Rising
cs_n inactive to cs_n active
once_n Active to resin_n Rising
once_n Hold to resin_n Rising
½t –10
½t –10
½t –10
t
t
5.1
AC Test Conditions
The AC specifications are tested with the 50-pF load shown in Figure 15. Specifications are
measured at the VCC/2 crossing point unless otherwise specified.
Figure 15. AC Test Load
IA211080314-13
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