LP87C51-1(2004) 데이터 시트보기 (PDF) - Intel

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LP87C51-1
(Rev.:2004)

CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER

Intel 

87C51/80C51BH/80C31BH

EXTERNAL MEMORY CHARACTERISTICS

All parameter values apply to all devices unless otherwise indicated. In this table, 87C51/BH refers to

87C51/BH, 87C51-1/BH-1 and 87C51-2/BH-2. (Continued)

Oscillator

Symbol

Parameter

12 MHz 24 MHz

Variable

Units

Min Max Min Max

Min

Max

TPXIX Input Instr Hold After PSEN 0

0

0

ns

TPXIZ Input Instr Float After PSEN

87C51/BH

59

87C51-24/BH-24

21

TCLCLb25 ns

TCLCLb20 ns

TAVIV Address to Valid Instr In

312

103

5TCLCLb105 ns

TPLAZ PSEN Low to Address Float

10

10

10

ns

TRLRH RD Pulse Width

400

150

6TCLCLb100

ns

TWLWH WR Pulse Width

400

150

6TCLCLb100

ns

TRLDV

RD Low to Valid Data In

87C51/BH

87C51-24/BH-24

252

113

5TCLCLb165 ns

5TCLCLb95 ns

TRHDX Data Hold After RD

0

0

0

ns

TRHDZ Data Float After RD

107

23

2TCLCLb60 ns

TLLDV

ALE Low to Valid Data In

87C51/BH

87C51-24/BH-24

517

243

8TCLCLb150 ns

8TCLCLb90 ns

TAVDV

Address to Valid Data In

87C51/BH

87C51-24/BH-24

585

285

9TCLCLb165 ns

9TCLCLb90 ns

TLLWL ALE Low to RD or WR Low 200 300 75 175 3TCLCLb50 3TCLCLa 50 ns

TAVWL Address to RD or WR Low

87C51/BH

203

4TCLCLb130

ns

87C51-24/BH-24

77

4TCLCLb90

ns

TQVWX Data Valid to WR Transition

87C51/BH

33

TCLCLb50

ns

80C51-24/BH-24

12

TCLCLb30

ns

13

Free Datasheet http://www.datasheet4u.com/

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