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HYUNDAI MicroElectronics GMS90X5XC Series
32 Jan. 2001 Ver 1.0
AC Characteristics for GMS90X5XC series (16MHz)
External Data Memory Characteristics
Advance Information (16MHz)
External Clock Drive
Parameter Symbol
16 MHz Oscillator
Variable Oscillator
1/t
CLCL
= 3.5 to 16MHz
Unit
Min. Max. Min. Max.
RD
pulse width t
RLRH
275 - 6t
CLCL
-100 - ns
WR
pulse width t
WLWH
275 - 6t
CLCL
-100 - ns
Address hold after ALE t
LLAX2
23 - t
CLCL
-40 - ns
RD
to valid data in t
RLDV
-183 -5t
CLCL
-130 ns
Data hold after RD
t
RHDX
0- 0 - ns
Data float after RD
t
RHDZ
-75 -2t
CLCL
-50 ns
ALE to valid data in t
LLDV
-350 -8t
CLCL
-150 ns
Address to valid data in t
AVDV
-398 -9t
CLCL
-165 ns
ALE to WR
or RD t
LLWL
138 238 3t
CLCL
−
50 3t
CLCL
+50 ns
Address valid to WR or RD t
AVWL
120 - 4t
CLCL
-130 - ns
WR
or RD high to ALE high t
WHLH
28 97 t
CLCL
−
35 t
CLCL
+35 ns
Data valid to WR
transition t
QVWX
13 - t
CLCL
−
50 - ns
Data setup before WR
t
QVWH
288 - 7t
CLCL
-150 - ns
Data hold after WR
t
WHQX
23 - t
CLCL
−
40 - ns
Address float after RD
t
RLAZ
-0 - 0 ns
Parameter Symbol
Variable Oscillator
(Freq. = 3.5 to 16MHz)
Unit
Min. Max.
Oscillator period t
CLCL
62.5 285.7 ns
High time t
CHCX
17 t
CLCL
- t
CLCX
ns
Low time t
CLCX
17 t
CLCL
- t
CHCX
ns
Rise time t
CLCH
-17ns
Fall time t
CHCL
-17ns