LP80C32 데이터 시트보기 (PDF) - Intel

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LP80C32

CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER

Intel 

8XC52 54 58

EXPLANATION OF THE AC SYMBOLS

Each timing symbol has 5 characters The first char-

acter is always a ‘T’ (stands for time) The other

characters depending on their positions stand for

the name of a signal or the logical status of that

signal The following is a list of all the characters and

what they stand for

A Address

C Clock

D Input Data

H Logic level HIGH

I Instruction (program memory contents)

L Logic level LOW or ALE

P PSEN

Q Output Data

R RD signal

T Time

V Valid

W WR signal

X No longer a valid logic level

Z Float

For example

TAVLL e Time from Address Valid to ALE Low

TLLPL e Time from ALE Low to PSEN Low

AC CHARACTERISTICS (Over Operating Conditions Load Capacitance for Port 0 ALE PROG and

PSEN e 100 pF Load Capacitance for All Other Outputs e 80 pF)

EXTERNAL MEMORY CHARACTERISTICS

All parameter values apply to all devices unless otherwise indicated In this table 8XC5X refers to 8XC5X

8XC5X-1 and 8XC5X-2

Oscillator

Symbol

Parameter

12 MHz 24 MHz 33 MHz

Variable

Units

Min Max Min Max Min Max

Min

Max

1 TCLCL Oscillator Frequency

8XC5X

8XC5X-1

8XC5X-2

8XC5X-24

8XC5X-33

35

12

MHz

35

16

MHz

05

12

MHz

35

24

MHz

35

33

MHz

TLHLL ALE Pulse Width 127

43

21

2 TCLCL b 40

ns

TAVLL Address Valid to

ALE Low

8XC5X

43

TCLCL b 40

ns

8XC5X-24

12

TCLCL b 30

ns

8XC5X-33

5

TCLCL b 25

ns

TLLAX Address Hold After

ALE Low

8XC5X -24

53

12

TCLCL b 30

ns

8XC5X-33

5

TCLCL b 25

ns

TLLIV

ALE Low to Valid

Instruction In

8XC5X

8XC5X-24

8XC5X-33

234

91

56

4 TCLCL b 100 ns

4 TCLCL b 75 ns

4 TCLCL b 65 ns

12

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