X5643, X5645 (Replaces X25643, X25645)

FN8135 Rev 1.00

Page 11 of 19

July 18, 2005

CAPACITANCE

TA = +25°C, f = 1MHz, VCC = 5V

Notes: (1) VIL min. and VIH max. are for reference only and are not tested.

(2) This parameter is periodically sampled and not 100% tested.

EQUIVALENT A.C. LOAD CIRCUIT AT 5V VCC

A.C. TEST CONDITIONS

A.C. CHARACTERISTICS

(Over recommended operating conditions, unless otherwise specified)

Serial Input Timing

Symbol

Test

Max.

Unit

Conditions

COUT(2)

Output Capacitance (SO, RESET/RESET)

8

pF

VOUT = 0V

CIN(2)

Input Capacitance (SCK, SI, CS, WP)6

pF

VIN = 0V

5V

Output

100pF

5V

4.6k



RESET/RESET

30pF

2.06k



3.03k



Input pulse levels

VCC x 0.1 to VCC x 0.9

Input rise and fall times

10ns

Input and output timing level

VCC x0.5

Symbol

Parameter

2.7-5.5V

Unit

Min.

Max.

fSCK

Clock frequency

0

2

MHz

tCYC

Cycle time

500

ns

tLEAD

CS lead time

250

ns

tLAG

CS lag time

250

ns

tWH

Clock HIGH time

200

ns

tWL

Clock LOW time

250

ns

tSU

Data setup time

50

ns

tH

Data hold time

50

ns

tRI(3)

Input rise time

100

ns

tFI(3)

Input fall time

100

ns

tCS

CS deselect time

500

ns

tWC(4)

Write cycle time

10

ms