CS82C85 datasheet(19/21 Pages) RENESAS

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82C85

FN2976 Rev.0.00

Page 19 of 21

March 1997

A.C. Testing Input, Output Waveform

Test Load Circuits

PASSIVE LOAD

R = 360 at V = 2.25 for CLK and CLK50 outputs

R = 470 at V = 2.87 for all other outputs (Except X2)

NOTES:

1. CL = 100pF for CLK and CLK50 output

2. CL = 50pF minimum for all other outputs

3. CL = Includes probe and jig capacitance

DYNAMIC LOAD

IOL = 5mA, IOH = -5mA for CLK and CLK50 outputs

IOL = 5mA, IOH = -2.5mA for all other outputs (Except X2)

IOL = 2.5mA, IOH = -1.0mA for X2 output (DC Performance

characteristic only)

VTRIP = 1.4V

TCHCL, TCLCH LOAD CIRCUIT (USING X1, X2)

TCHCL, TCLCH LOAD CIRCUIT (USING EFI)

TRYLCL, TRYHCH LOAD CIRCUIT (USING X1, X2)

TRYLCL, TRYHCH LOAD CIRCUIT (USING EFI)

FROM OUTPUT

UNDER TEST

SEE NOTE 3

FROM OUTPUT

UNDER TEST

SEE NOTE 3

CSYNC

CLK

F/C

LOAD

(SEE NOTE 1)

LOAD

(SEE NOTE 1)

CLK50

EF1

CSYNC

CLK

F/C

VCC

PULSE

GENERATOR

LOAD

(SEE NOTE 1)

LOAD

(SEE NOTE 1)

CLK50

CLK

LOAD

(SEE NOTE 1)

LOAD

(SEE NOTE 2)

CSYNC

F/C

AEN2

PULSE

GENERATOR

TRIGGER

VCC

24MHZ

READY

OSC

AEN1

RDY2

EF1

CLK

LOAD

(SEE NOTE 1)

F/C

VCC

PULSE

GENERATOR

CSYNC

RDY2

AEN2

LOAD

(SEE NOTE 2)

AEN1

READY

TRIGGER

PULSE

GENERATOR

INPUT

VIH + 0.4V

VIL + 0.4V

1.5V

VOH

VOL

OUTPUT

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