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GMS90C51 Datasheet(PDF) 43 Page - Hynix Semiconductor

Part # GMS90C51
Description  8-BIT SINGLE-CHIP MICROCONTROLLERS
PDF  59 Pages
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Manufacturer  HYNIX [Hynix Semiconductor]
Direct Link  http://www.skhynix.com/kor/main.do
Logo HYNIX - Hynix Semiconductor

GMS90C51 Datasheet(HTML) 43 Page - Hynix Semiconductor

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GMS90 Series
Dec. 1998 Ver 3.0
39
AC Characteristics for GMS90 series (33MHz)
External Data Memory Characteristics
Advance Information (33MHz)
External Clock Drive
Parameter
Symbol
33 MHz Oscillator
Variable Oscillator
1/tCLCL = 3.5 to 33MHz
Unit
Min.
Max.
Min.
Max.
RD pulse width
tRLRH
132
-
6tCLCL-50
-
ns
WR pulse width
tWLWH
132
-
6tCLCL-50
-
ns
Address hold after ALE
tLLAX2
10
-
tCLCL-20
-
ns
RD to valid data in
tRLDV
-81
-
5tCLCL-70
ns
Data hold after RD
tRHDX
0-
0
-
ns
Data float after RD
tRHDZ
-46
-
2tCLCL-15
ns
ALE to valid data in
tLLDV
-153
-
8tCLCL-90
ns
Address to valid data in
tAVDV
-183
-
9tCLCL-90
ns
ALE to WR or RD
tLLWL
71
111
3tCLCL-20
3tCLCL+20
ns
Address valid to WR or RD
tAVWL
66
-
4tCLCL-55
-
ns
WR or RD high to ALE high
tWHLH
10
40
tCLCL-20
tCLCL+20
ns
Data valid to WR transition
tQVWX
5-
tCLCL-25
-
ns
Data setup before WR
tQVWH
142
-
7tCLCL-70
-
ns
Data hold after WR
tWHQX
10
-
tCLCL-20
-
ns
Address float after RD
tRLAZ
-0
-
0
ns
Parameter
Symbol
Variable Oscillator
(Freq. = 3.5 to 24MHz)
Unit
Min.
Max.
Oscillator period
tCLCL
30.3
285.7
ns
High time
tCHCX
11.5
tCLCL - tCLCX
ns
Low time
tCLCX
11.5
tCLCL - tCHCX
ns
Rise time
tCLCH
-5
ns
Fall time
tCHCL
-5
ns



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