TP87C52 datasheet(18/23 Pages) INTEL

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8XC525458

EXTERNAL CLOCK DRIVE

Symbol

Parameter

Min

Max

Units

1TCLCL

Oscillator Frequency

MHz

8XC5X

MHz

8XC5X-1

MHz

8XC5X-2

MHz

8XC5X-24

MHz

8XC5X-33

MHz

TCHCX

High Time

8XC5X-2433

035 TOSC

065 TOSC

TCLCX

Low Time

8XC5X-2433

035 TOSC

065 TOSC

TCLCH

Rise Time

8XC5X-24

8XC5X-33

TCHCL

Fall Time

8XC5X-24

8XC5X-33

EXTERNAL CLOCK DRIVE WAVEFORM

272336 – 16

AC TESTING INPUT OUTPUT WAVEFORMS

272336 – 19

AC Inputs during testing are driven at VCCb05V for a Logic ‘‘1’’

and 045V for a Logic ‘‘0’’ Timing measurements are made at VIH

min for a Logic ‘‘1’’ and VIL max for a Logic ‘‘0’’

FLOAT WAVEFORMS

272336 – 20

For timing purposes a port pin is no longer floating when a

100 mV change from load voltage occurs and begins to float

when a 100 mV change from the loaded VOH VOL level occurs

IOL IOH e g20 mA

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