FM25640C datasheet(10/13 Pages) RAMTRON

10 / 13 page

FM25640C - 64Kb 5V SPI F-RAM

Rev. 1.1

June 2011

10 of 13

AC Parameters (TA = -40 C to + 85 C, VDD = 4.5V to 5.5V unless otherwise specified)

Symbol

Parameter

Min

Max

Units

Notes

fCK

SCK Clock Frequency

MHz

tCH

Clock High Time

tCL

Clock Low Time

tCSU

Chip Select Setup

tCSH

Chip Select Hold

tOD

Output Disable

tODV

Output Data Valid

tOH

Output Data Hold

Deselect Time

Data In Rise Time

1,2

Data In Fall Time

1,2

Data In Hold Time

tSU

Data In Setup Time

tHS

/HOLD Input Setup Time

tHH

/HOLD Input Hold Time

tHZ

/HOLD Low to Data Out Hi-Z

tLZ

/HOLD High to Data Out Lo-Z

Notes

Rise and fall times measured between 10% and 90% of waveform.

This parameter is characterized but not 100% tested.

For Clock High Time tCH ≤ 100 ns, the parameter tODV is extended such that tCH + tODV ≤ 160 ns.

Capacitance (TA = 25 C, f=1.0 MHz, VDD = 5V)

Symbol

Parameter

Max

Units

Notes

Output Capacitance (SO)

Input Capacitance

Notes

This parameter is characterized and not 100% tested.

AC Test Conditions

Input Pulse Levels

10% and 90% of VDD

Input rise and fall times

10 ns

Input and output timing levels

0.5 VDD

Output Load Capacitance

100 pF

Data Retention

Symbol

Parameter

Min

Max

Units

Notes

TDR

+85ºC

Years

+80ºC

Years

+75ºC

Years

FM25640C Datasheet(PDF) 10 Page - Ramtron International Corporation

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