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DS21146D-page 4

Preliminary

© 1996 Microchip Technology Inc.

TABLE 1-3:

AC CHARACTERISTICS

Applicable over recommended operating ranges shown below unless otherwise noted.

VCC = +1.8V to 5.5V

Commercial (C):

Tamb = 0˚C to +70˚C

Industrial (I):

Tamb = -40

°C to +85°C

Symbol

Parameter

Min

Max

Units

Test Conditions

fSCK

Clock Frequency

—

—

—

3

2

1

MHz

MHz

MHz

VCC=4.5V to 5.5V

VCC=2.5V to 4.5V

VCC=1.8V to 2.5V

tCSS

CS Setup Time

100

250

500

—

—

—

ns

ns

ns

VCC=4.5V to 5.5V

VCC=2.5V to 4.5V

VCC=1.8V to 2.5V

tCSH

CS Hold Time

100

250

500

—

—

—

ns

ns

ns

VCC=4.5V to 5.5V

VCC=2.5V to 4.5V

VCC=1.8V to 2.5V

tCSD

CS Disable Time

250

500

500

—

—

—

ns

ns

ns

VCC=4.5V to 5.5V

VCC=2.5V to 4.5V

VCC=1.8V to 2.5V

tSU

Data Setup Time

30

50

50

—

—

—

ns

ns

ns

VCC=4.5V to 5.5V

VCC=2.5V to 4.5V

VCC=1.8V to 2.5V

tHD

Data Hold Time

50

100

100

—

—

—

ns

ns

ns

VCC=4.5V to 5.5V

VCC=2.5V to 4.5V

VCC=1.8V to 2.5V

tR

CLK Rise Time

—

2

µs

(Note 1)

tF

CLK Fall Time

—

2

µs

(Note 1)

tHI

Clock High Time

150

250

475

—

—

—

ns

ns

ns

VCC=4.5V to 5.5V

VCC=2.5V to 4.5V

VCC=1.8V to 2.5V

tLO

Clock Low Time

150

250

475

—

—

—

ns

ns

ns

VCC=4.5V to 5.5V

VCC=2.5V to 4.5V

VCC=1.8V to 2.5V

tCLD

Clock Delay Time

50

—

ns

tV

Output Valid from

Clock Low

—

—

—

150

250

475

ns

ns

ns

VCC=4.5V to 5.5V

VCC=2.5V to 4.5V

VCC=1.8V to 2.5V

tHO

Output Hold Time

0

—

ns

tDIS

Output Disable Time

—

—

—

200

250

500

ns

ns

ns

VCC=4.5V to 5.5V (Note 1)

VCC=2.5V to 4.5V (Note 1)

VCC=1.8V to 2.5V (Note 1)

tHS

HOLD Setup Time

100

100

200

—

—

—

ns

ns

ns

VCC=4.5V to 5.5V

VCC=2.5V to 4.5V

VCC=1.8V to 2.5V

tHH

HOLD Hold Time

100

100

200

—

—

—

ns

ns

ns

VCC=4.5V to 5.5V

VCC=2.5V to 4.5V

VCC=1.8V to 2.5V

tHZ

HOLD Low to Output High-Z

100

150

200

—

—

—

ns

ns

ns

VCC=4.5V to 5.5V (Note 1)

VCC=2.5V to 4.5V (Note 1)

VCC=1.8V to 2.5V (Note 1)

tHV

HOLD High to Output Valid

100

150

200

—

—

—

ns

ns

ns

VCC=4.5V to 5.5V (Note 1)

VCC=2.5V to 4.5V (Note 1)

VCC=1.8V to 2.5V (Note 1)

tWC

Internal Write Cycle Time

—

5

ms

(Note 2)

—

Endurance

10M

—

E/W

Cycles

25

°C, Vcc = 5.0V, Block Mode (Note 3)

plete.

3:

This parameter is not tested but guaranteed by characterization. For endurance estimates in a specific application, please

consult the Total Endurance Model which can be obtained on our BBS or website.

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