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GMS90C320 Datasheet, PDF (35/46 Pages) Hynix Semiconductor – HYNIX SEMICONDUCTOR INC. 8-BIT SINGLE-CHIP MICROCONTROLLERS
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GMS90C320
AC Characteristics for 24MHz
External Data Memory Characteristics
Parameter
Symbol
RD pulse width
WR pulse width
Address hold after ALE
RD to valid data in
Data hold after RD
Data float after RD
ALE to valid data in
Address to valid data in
ALE to WR or RD
Address valid to WR or RD
WR or RD high to ALE high
Data valid to WR transition
Data setup before WR
Data hold after WR
Address float after RD
tR L R H
tW LW H
tL L A X 2
tR L D V
tRHD X
tRHD Z
tLLD V
tAVD V
tLLW L
tAVW L
tW HLH
tQ VW X
tQ VW H
tW HQ X
tR L A Z
Advance Information (24MHz)
External Clock Drive
Table 11.
Parameter
Oscillator period
High time
Low time
Rise time
Fall time
Symbol
tC L C L
tCHC X
tC L C X
tC L C H
tCHC L
24 MHz Oscillator
Min.
180
180
56
-
0
-
-
-
75
67
17
5
170
15
-
Max.
-
-
-
118
-
63
200
220
175
-
67
-
-
-
0
Variable Oscillator
1/tCLCL = 3.5 to 24MHz
Min.
Max.
6tC L C L -70
6tC L C L -70
2tC L C L -27
-
0
-
-
-
5tC L C L -90
-
-
-
-
3tC L C L -50
4tC L C L -97
tC L C L -25
tC L C L -37
7tC L C L -122
tC L C L -27
-
2tC L C L -20
8tC L C L -133
9tC L C L -155
3tC L C L +50
-
tC L C L +25
-
-
-
0
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Variable Oscillator
(Freq. = 3.5 to 24MHz)
Min.
Max.
41.7
285.7
12
tC LCL - tC LCX
12
tC LC L - tCH CX
-
12
-
12
Unit
ns
ns
ns
ns
ns
OCT. 2000 Ver 1.2
31
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