FM1808B 查看數據表（PDF） - Ramtron International Corporation
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FM1808B Datasheet PDF : 11 Pages
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FM1808B – 256Kb Bytewide 5V F-RAM
Write Cycle Timing - /WE Controlled Timing
tWC
tCA
tPC
CE
tC W
tAH
tAS
A(14:0)
WE
tWS
tWH
tWP
OE
DQ(7:0)
out
DQ(7:0)
in
tWZ
tDS
tWX
tDH
Power Cycle Timing
VDD
CE
VDD (min)
t PD
t PC
VIH (min)
VIH (min)
VDD (min)
t PU
VIL (max)
Power Cycle Timing (TA = -40° C to + 85° C, VDD = 4.5V to 5.5V unless otherwise specified)
Symbol Parameter
Min
Max Units
tPU
VDD(min) to First Access Start
tPD
Last Access Complete to VDD(min)
tVR
VDD Rise Time
tVF
VDD Fall Time
10
-
ms
0
-
µs
30
-
µs/V
100
-
µs/V
Notes
1 Slope measured at any point on VDD waveform.
Notes
1
1
Rev. 1.2
Mar. 2011
Page 9 of 11
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