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HYUNDAI MicroElectronics GMS90X5XC Series
36 Jan. 2001 Ver 1.0
AC Characteristics for GMS90X5XC series (33MHz)
External Data Memory Characteristics
Advance Information (33MHz)
External Clock Drive
Parameter Symbol
33 MHz Oscillator
Variable Oscillator
1/t
CLCL
= 3.5 to 33MHz
Unit
Min. Max. Min. Max.
RD
pulse width t
RLRH
132 - 6t
CLCL
-50 - ns
WR
pulse width t
WLWH
132 - 6t
CLCL
-50 - ns
Address hold after ALE t
LLAX2
10 - t
CLCL
-20 - ns
RD
to valid data in t
RLDV
-81 -5t
CLCL
-70 ns
Data hold after RD
t
RHDX
0- 0 - ns
Data float after RD
t
RHDZ
-46 -2t
CLCL
-15 ns
ALE to valid data in t
LLDV
-153 -8t
CLCL
-90 ns
Address to valid data in t
AVDV
-183 -9t
CLCL
-90 ns
ALE to WR
or RD t
LLWL
71 111 3t
CLCL
-20 3t
CLCL
+20 ns
Address valid to WR or RD t
AVWL
66 - 4t
CLCL
-55 - ns
WR
or RD high to ALE high t
WHLH
10 40 t
CLCL
-20 t
CLCL
+20 ns
Data valid to WR
transition t
QVWX
5-t
CLCL
-25 - ns
Data setup before WR t
QVWH
142 - 7t
CLCL
-70 - ns
Data hold after WR
t
WHQX
10 - t
CLCL
-20 - ns
Address float after RD
t
RLAZ
-0 - 0 ns
Parameter Symbol
Variable Oscillator
(Freq. = 3.5 to 24MHz)
Unit
Min. Max.
Oscillator period t
CLCL
30.3 285.7 ns
High time t
CHCX
11.5 t
CLCL
- t
CLCX
ns
Low time t
CLCX
11.5 t
CLCL
- t
CHCX
ns
Rise time t
CLCH
-5ns
Fall time t
CHCL
-5ns