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HYUNDAI MicroElectronics GMS90X5XC Series
34 Jan. 2001 Ver 1.0
AC Characteristics for GMS90X5XC series (24MHz)
External Data Memory Characteristics
Advance Information (24MHz)
External Clock Drive
Parameter Symbol
24 MHz Oscillator
Variable Oscillator
1/t
CLCL
= 3.5 to 24MHz
Unit
Min. Max. Min. Max.
RD
pulse width t
RLRH
180 - 6t
CLCL
-70 - ns
WR
pulse width t
WLWH
180 - 6t
CLCL
-70 - ns
Address hold after ALE t
LLAX2
15 - t
CLCL
-27 - ns
RD
to valid data in t
RLDV
-118 -5t
CLCL
-90 ns
Data hold after RD
t
RHDX
0- 0 - ns
Data float after RD
t
RHDZ
-63 -2t
CLCL
-20 ns
ALE to valid data in t
LLDV
-200 -8t
CLCL
-133 ns
Address to valid data in t
AVDV
-220 -9t
CLCL
-155 ns
ALE to WR
or RD t
LLWL
75 175 3t
CLCL
-50 3t
CLCL
+50 ns
Address valid to WR or RD t
AVWL
67 - 4t
CLCL
-97 - ns
WR
or RD high to ALE high t
WHLH
17 67 t
CLCL
-25 t
CLCL
+25 ns
Data valid to WR
transition t
QVWX
5-t
CLCL
-37 - ns
Data setup before WR t
QVWH
170 - 7t
CLCL
-122 - ns
Data hold after WR
t
WHQX
15 - t
CLCL
-27 - 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
41.7 285.7 ns
High time t
CHCX
12 t
CLCL
- t
CLCX
ns
Low time t
CLCX
12 t
CLCL
- t
CHCX
ns
Rise time t
CLCH
-12ns
Fall time t
CHCL
-12ns