AT17C128A(1998) Ver la hoja de datos (PDF) - Atmel Corporation
Número de pieza
componentes Descripción
Fabricante
AT17C128A Datasheet PDF : 11 Pages
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AT17A Series
.
AC Characteristics for AT17C256A
VCC = 5V ± 5% Commercial / VCC = 5V ± 10% Ind./Mil
Commercial
Industrial/Military
Symbol
tOE(2)
tCE(2)
tCAC(2)
tOH(2)
tDF(3)
tLC
tHC
tSCE
tHCE
tHOE
FMAX
Description
OE to Data Delay
CE to Data Delay
CLK to Data Delay
Data Hold From CE, OE, or CLK
CE or OE to Data Float Delay
CLK Low Time
CLK High Time
CE Setup Time to CLK (to guarantee proper counting)
CE Hold Time to CLk (to guarantee proper counting)
OE High Time (guarantees counter is reset)
MAX Input Clock Frequency
Min
Max
Min
Max
25
25
45
45
50
55
0
0
50
50
20
20
20
20
35
40
0
0
20
20
12.5
12.5
.
AC Characteristics for AT17C256A When Cascading
VCC = 5V± 5% Commercial / VCC = 5V ± 10% Ind./Mil
Commercial
Industrial/Military
Symbol Description
Min
Max
Min
Max
tCDF(3)
CLK to Data Float Delay
tOCK(2)
CLK to CEO Delay
tOCE(2)
CE to CEO Delay
tOOE(2)
RESET/OE to CEO Delay
Notes: 1. Preliminary specifications for military operating range only.
50
50
35
40
35
35
30
35
2. AC test load = 50 pf.
3. Float delays are measured with 5 pF AC loads. Transition is measured ±200 mV from steady-state active levels.
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
MHz
Units
ns
ns
ns
ns
7
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