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FM21LD16 データシート(PDF) 11 Page - Ramtron International Corporation

部品番号 FM21LD16
部品情報  2Mbit F-RAM Memory
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メーカー  RAMTRON [Ramtron International Corporation]
ホームページ  http://www.ramtron.com
Logo RAMTRON - Ramtron International Corporation

FM21LD16 データシート(HTML) 11 Page - Ramtron International Corporation

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FM21LD16 - 128Kx16 FRAM
Rev. 1.1
Apr. 2011
Page 11 of 15
Power Cycle Timing (TA = -40° C to + 85° C, VDD = 2.7V to 3.6V unless otherwise specified)
Symbol
Parameter
Min
Max
Units
Notes
tPU
Power-Up (after VDD min. is reached) to First Access Time
450
-
µs
tPD
Last Write (/WE high) to Power Down Time
0
-
µs
tVR
VDD Rise Time
50
-
µs/V
1,2
tVF
VDD Fall Time
100
-
µs/V
1,2
Notes
1
Slope measured at any point on VDD waveform.
2
Ramtron cannot test or characterize all VDD power ramp profiles. The behavior of the internal circuits is difficult to predict
when VDD is below the level of a transistor threshold voltage. Ramtron strongly recommends that VDD power up faster than
100ms through the range of 0.4V to 1.0V.
Data Retention (VDD = 2.7V to 3.6V)
Parameter
Min
Units
Notes
Data Retention
10
Years
AC Test Conditions
Input Pulse Levels
0 to 3V
Input and Output Timing Levels
1.5V
Input Rise and Fall Times
3 ns
Output Load Capacitance
30pF
Read Cycle Timing 1 (/CE low, /OE low)
Read Cycle Timing 2 (/CE-controlled)


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