Filter
Top Products
HYUNDAI MicroElectronics GMS90X5XC Series
30 Jan. 2001 Ver 1.0
AC Characteristics for GMS90X5XC series (12MHz)
External Data Memory Characteristics
Advance Information (12MHz)
External Clock Drive
Parameter Symbol
12 MHz Oscillator
Variable Oscillator
1/t
CLCL
= 3.5 to 12MHz
Unit
Min. Max. Min. Max.
RD
pulse width t
RLRH
400 - 6t
CLCL
-100 - ns
WR
pulse width t
WLWH
400 - 6t
CLCL
-100 - ns
Address hold after ALE t
LLAX2
53 - t
CLCL
-30 - ns
RD
to valid data in t
RLDV
-252 -5t
CLCL
-165 ns
Data hold after RD
t
RHDX
0- 0 - ns
Data float after RD
t
RHDZ
-97 -2t
CLCL
-70 ns
ALE to valid data in t
LLDV
-517 -8t
CLCL
-150 ns
Address to valid data in t
AVDV
-585 -9t
CLCL
-165 ns
ALE to WR
or RD t
LLWL
200 300 3t
CLCL
-50 3t
CLCL
+50 ns
Address valid to WR or RD t
AVWL
203 - 4t
CLCL
-130 - ns
WR
or RD high to ALE high t
WHLH
43 123 t
CLCL
-40 t
CLCL
+40 ns
Data valid to WR
transition t
QVWX
33 - t
CLCL
-50 - ns
Data setup before WR t
QVWH
433 - 7t
CLCL
-150 - ns
Data hold after WR
t
WHQX
33 - t
CLCL
-50 - ns
Address float after RD
t
RLAZ
-0 - 0 ns
Parameter Symbol
Variable Oscillator
(Freq. = 3.5 to 12MHz)
Unit
Min. Max.
Oscillator period (V
CC
=5V)
Oscillator period (V
CC
=3.3V)
t
CLCL
t
CLCL
83.3
83.3
285.7
1
ns
High time t
CHCX
20 t
CLCL
- t
CLCX
ns
Low time t
CLCX
20 t
CLCL
- t
CHCX
ns
Rise time t
CLCH
-20ns
Fall time t
CHCL
-20ns