LD87C52-1 查看數據表（PDF） - Intel

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LD87C52-1

CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER

Intel 

8XC52 54 58

EXTERNAL MEMORY CHARACTERISTICS (Continued)

All parameter values apply to all devices unless otherwise indicated

Oscillator

Symbol Parameter

12 MHz 24 MHz 33 MHz

Variable

Units

Min Max Min Max Min Max

Min

Max

TRLDV RD Low to Valid

Data In

8XC5X

252

8XC5X-24

113

8XC5X-33

61

5 TCLCL b 165 ns

5 TCLCL b 95 ns

5 TCLCL b 90 ns

TRHDX Data Hold After 0

0

0

0

ns

RD

TRHDZ Data Float After

RD

8XC5X -24

107

23

8XC5X-33

35

2 TCLCL b 60 ns

2 TCLCL b 25 ns

TLLDV ALE Low to

Valid Data In

8XC5X

517

8XC5X-24 33

243

150

8 TCLCL b 150 ns

8 TCLCL b 90 ns

TAVDV Address to

Valid Data In

8XC5X

585

8XC5X-24 33

285

180

9 TCLCL b 165 ns

9 TCLCL b 90 ns

TLLWL ALE Low to RD 200 300 75 175 41 140 3 TCLCL b 50 3 TCLCL a 50 ns

or WR Low

TAVWL Address to RD

or WR Low

8XC5X

203

4 TCLCL b 130

ns

8XC5X-24

77

4 TCLCL b 90

ns

8XC5X-33

46

4 TCLCL b 75

ns

14

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