87C198 데이터 시트보기 (PDF) - Intel

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87C198

COMMERCIAL/EXPRESS CHMOS MICROCONTROLLER

Intel 

8XC198

AC CHARACTERISTICS

Test Conditions Capacitive load on all pins e 100 pF Rise and fall times e 10 ns FOSC e 12 16 MHz

The 87C198 will meet these specifications

Symbol

Description

FXTAL

FXTAL

TOSC

TOSC

TLHLH

TLHLL

TAVLL

TLLAX

TLLRL

TRLRH

TRHLH

TRLAZ

TLLWL

TQVWH

TWLWH

TWHQX

TWHLH

TWHBX

TLLBX

TRHBX

TWHAX

TRHAX

Frequency on XTAL1 12 MHz

Frequency on XTAL1 16 MHz

1 FXTAL 12 MHz

1 FXTAL 16 MHz

ALE Cycle Time

ALE High Period

Address Setup to ALE Falling Edge

Address Hold after ALE Falling Edge

ALE Falling Edge to RD Falling Edge

RD Low Period

RD Rising Edge to ALE Rising Edge

RD Low to Address Float

ALE Falling Edge to WR Falling Edge

Data Stable to WR Rising Edge

WR Low Period

Data Hold after WR Rising Edge

WR Rising Edge to ALE Rising Edge

INST Hold after WR Rising Edge

INST Hold after ALE Rising Edge

INST Hold after RD Rising Edge

AD8–15 Hold after WR Rising Edge

AD8–15 Hold after RD Rising Edge

Min

Max

35

12

35

16

83 3

286

62 5

286

4 TOSC

TOSC b 10

TOSCa10

TOSC b 20

TOSC b 40

TOSC b 35

TOSC b 5

TOSC a 25

TOSC

TOSC a 25

5

TOSC b 10

TOSC b 23

TOSC b 15

TOSC b 15

TOSC b 15

TOSC b 15

TOSC b 10

TOSC b 10

TOSC b 30

TOSC b 25

TOSC a 5

TOSC a 10

Units

MHz

MHz

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

Notes

(Note 1)

(Note 1)

(Note 3)

(Note 3)

(Note 2)

(Note 3)

(Note 3)

(Note 2)

NOTES

1 Testing performed at 3 5 MHz However the part is static by design and will typically operate below 1 Hz

2 Assuming back-to-back bus cycles

3 When using wait states add 2 TOSC c n where n e number of wait states

10

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