AT17LV256A Ver la hoja de datos (PDF) - Atmel Corporation
Número de pieza
componentes Descripción
Fabricante
AT17LV256A Datasheet PDF : 15 Pages
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AT17C/LV65A/128A/256A
AC Characteristics for AT17C256A
VCC = 5V ± 5% Commercial; VCC = 5V ± 10% Industrial/Military
Commercial
Industrial/Military(1)
Symbol Description
Min
Max
Min
Max
TOE(2)
TCE(2)
TCAC(2)
OE to Data Delay
nCS to Data Delay
DCLK to Data Delay
30
35
45
45
50
55
TOH
TDF(3)
Data Hold From nCS, OE, or DCLK
nCS or OE to Data Float Delay
0
0
50
50
TLC
DCLK Low Time
20
20
THC
DCLK High Time
20
20
TSCE
nCS Setup Time to DCLK (to guarantee proper counting)
35
40
THCE
nCS Hold Time from DCLK (to guarantee proper counting)
0
0
THOE
OE Low Time (guarantees counter is reset)
20
20
FMAX
Notes:
Maximum Input Clock Frequency
12.5
12.5
1. Preliminary specifications for military operating range only.
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
AC Characteristics for AT17C256A when Cascading
VCC = 5V ± 5% Commercial; VCC = 5V ± 10% Industrial/Military
Commercial
Industrial/Military(1)
Symbol Description
Min
Max
Min
Max
TCDF(3)
DCLK to Data Float Delay
50.0
50.0
TOCK(2)
DCLK to nCASC Delay
35.0
40.0
TOCE(2)
nCS to nCASC Delay
35.0
35.0
TOOE(2)
OE to nCASC Delay
30.0
35.0
FMAX
Notes:
Maximum Input Clock Frequency
10.0
10.0
1. Preliminary specifications for military operating range only.
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
MHz
11
0996D–08/01
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