N87L52 查看數據表（PDF） - Intel

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N87L52

LOW VOLTAGE CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLERS

Intel 

EXTERNAL CLOCK DRIVE

Symbol

Parameter

Min

1 TCLCL

Oscillator Frequency

8XL5X

35

8XL5X-1

35

8XL5X-20

35

TCHCX

High Time

20

TCLCX

Low Time

20

TCLCH

Rise Time

TCHCL

Fall Time

EXTERNAL CLOCK DRIVE WAVEFORM

8XL52 54 58

Max

Units

12

16

MHz

20

ns

ns

20

ns

20

ns

AC TESTING INPUT OUTPUT WAVEFORMS

FLOAT WAVEFORMS

272468 – 15

272468 – 16

AC Inputs during testing are driven at VCCb0 5V for a Logic ‘‘1’’

and 0 45V for a Logic ‘‘0’’ Timing measurements are made at VIH

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

272468 – 17

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 (-L IOL IOH e g10 mA)

15

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