ia186eb Innovasic Semiconductor Inc., ia186eb Datasheet - Page 53

• Manufacturer Part Number: ia186eb
• Description: 8-bit/16-bit Microcontrollers
• Manufacturer: Innovasic Semiconductor Inc.

IA186EB/IA188EB
8-Bit/16-Bit Microcontrollers
Table 17. Relative Timing Characteristics
5.1
The AC specifications are tested with the 50-pF load shown in Figure 15. Specifications are
measured at the V
Figures 16 and 17 show how timings vary with load capacitance.
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
WLWH
WHDX
WHPH
WHLH
RHPH
OVRH
RHOX
RLRH
RHAV
LLWL
AFRL
PHPL
LHLL
AVLL
LLAX
LLRL
PLLL
AC Test Conditions
ale Rising to ale Falling
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
Output Data Hold after wr_n Rising
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
CC
/2 crossing point unless otherwise specified. The derating curves of
®
Parameter
Figure 15. AC Test Load
UNCONTROLLED WHEN PRINTED OR COPIED
(2t) – 5
(2t) – 5
½t –10
½t –10
½t –10
½t –15
½t –15
½t –10
½t –10
½t –10
½t –10
t – 15
t – 15
t – 15
Min
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IA211080314-02
0
t
t
Max
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Units
Ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
http://www.Innovasic.com
January 14, 2009
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