TSC80C51C-44IB datasheet(14/19 Pages) TEMIC

部品番号	TSC80C51C-44IB

部品情報	CMOS 0 to 44 MHz Single-Chip 8 Bit Microcontroller

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メーカー	TEMIC [TEMIC Semiconductors]

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14 / 19 page

TSC80C31/80C51

Rev. E (14 Jan.97)

14

MATRA MHS

Explanation of the AC Symbol

Each timing symbol has 5 characters. The first character

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.

Example :

TAVLL = Time for Address Valid to ALE low.

TLLPL = Time for ALE low to PSEN low.

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 : READ signal.

T : Time.

V : Valid.

W : WRITE signal.

X : No longer a valid logic level.

Z : Float.

AC Parameters

TA= 0 to + 70

°C ; Vss= 0 V ; Vcc= 5 V ± 10 % ; F= 0 to 44 MHz

TA= 0 to +70

°C ; Vss= 0 V ; 2.7 V <Vcc < 5.5 V ; F= 0 to 16 MHz

TA=–40

° to +85°C; Vss= 0 V; 2.7 V<Vcc <5.5 V ; F= 0 to 16 MHz

TA= –55

° + 125°C; Vss= 0 V; Vcc= 5 V ± 10 % ; F= 0 to 40 MHz

(Load Capacitance for PORT 0, ALE and PSEN = 100 pF ; Load

Capacitance for all other outputs = 80 pF)

External Program Memory Characteristics (values in ns)

16 MHz

20 MHz

25 MHz

30 MHz

36 MHz

40 MHz

44 MHz

SYMBOL

PARAMETER

min max min max min max min max min max min max min max

TLHLL

ALE Pulse Width

110

90

70

60

50

40

30

TAVLL

Address valid to ALE

40

30

20

15

10

9

7

TLLAX

Address Hold After ALE

35

30

20

TLLIV

ALE to valid instr in

185

170

130

100

80

70

65

TLLPL

ALE to PSEN

45

40

30

25

20

15

12

TPLPH

PSEN pulse Width

165

130

100

80

75

65

54

TPLIV

PSEN to valid instr in

125

110

85

65

50

45

35

TPXIX

Input instr Hold After PSEN

0

TPXIZ

Input instr Float After PSEN

50

45

35

30

25

20

10

TPXAV

PSEN to Address Valid

55

50

40

35

30

25

15

TAVIV

Address to Valid instr in

230

210

170

130

90

80

70

TPLAZ

PSEN low to Address Float

10

8

6

5

External Program Memory Read Cycle

TAVIV

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