AT17LV256-10SI(1997) 查看數據表（PDF） - Atmel Corporation
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AT17LV256-10SI Datasheet PDF : 10 Pages
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AT17 Series
AC Characteristics
VCC = 3.3V ± 10%
Commercial
Industrial/Military
Symbol Description
Min
Max
Min
Max
TOE(2)
TCE(2)
TCAC(2)
TOH(2)
TDF(3)
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
40
45
60
60
75
80
0
0
55
55
TLC
CLK Low Time
25
25
THC
CLK High Time
25
25
TSCE
CE Setup Time to CLK (to guarantee proper counting)
35
60
THCE
CE Hold Time to CLk (to guarantee proper counting)
0
0
THOE
OE High Time (guarantees counter is reset)
25
FMAX(4) MAX Input Clock Frequency
10
25
8
10
Notes: 1. Preliminary specifications for military operating range only.
2. AC test lead = 50 pf.
3. Float delays are measured with 5 pF AC loads. Transition is measured ±200 mV afrom steady state active levels.
4. During cascade FMAX = 8 MHz.
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
MHz
AC Characteristics When Cascading
VCC = 3.3V ± 10%
Symbol
TCDF(3)
TOCK(2)
TOCE(2)
TOOE(2)
Description
CLK to Data Float Delay
CLK to CEO Delay
CE to CEO Delay
RESET/OE to CEO Delay
Commercial
Min
Max
60
55
55
40
Industrial/Military
Min
Max
60
60
60
45
Units
ns
ns
ns
ns
9
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