S04SH/S04SH-1/S035HL/S035HL-1

WAVEFORMS

 

~~~----tCY-----­

 

 

 

 

 

~tLL-1

L ALE

J

I

L

ALE

J

!-I_____---!

 

 

I

 

~tcc--I tCA 1-

 

 

 

 

Rii

-------1\

I

 

 

 

 

 

tAFCj f -

-IttDR

 

 

 

 

 

IFLOATING

_____

 

 

 

BUS

~ FLOATING

 

 

 

 

 

~tAD~1

 

 

 

 

 

 

Read From External Data Memory

 

ALE

J

_I tCA 1--

L

 

 

 

 

 

O.45V ___--'x:::~TEST POINTS ~~::X'--___

 

 

 

 

 

 

2.4V ---

r----

BUS

 

 

 

 

 

 

 

 

Write to External Data Memory

 

Input and Output for A.C.Tests.

 

A.C. CHARACTERISTICS TA = O°C to 70°C VCC = VDD = 5V ± 10%. VSS = OV

Symbol

tLL tAL tLA tcc tow two

ICY tOR tRD tAW tAD tAFC teA

Parameter

ALE Pulse Width

Address Setup to ALE

Address Hold from ALE

Control Pulse Width (PSEN, RD, WR) Data Setup before WR

Data Hold after WR

Cycle Time

Data Hold

~, I!il5 to Data In Address Setup to WR Address Setup to Data In Address Float to RD, PSEN Control Pulse to ALE

 

8048H

 

8048H-1

 

 

8035HL

 

8035HL-1

 

6 MHz

8 MHz

11 MHz

Conditions

Min. Max. Min. Max. Min. Max. Unit (Note 1)

400

 

270

 

150

 

ns

75

 

75

 

70

 

ns

65

 

65

 

50

 

ns

700

 

490

 

300

 

ns

370

 

370

 

280

 

ns

80

 

80

 

40

 

ns CL =20pF

 

 

 

 

 

 

(NOTE 2)

2.5

 

1.875

 

1.36

 

/ls

0

200

0

150

0

100

ns

 

500

 

340

 

200

ns

230

 

210

 

200

 

ns

 

950

 

650

 

400

ns

0

 

0

 

-1

 

ns

10

 

10

 

0

 

ns

NOTE 1: Control outputl

CL=80pF

NOTE 2: BUS High Impedance Load: 20 pF

BUS outputl

CL,; 150 pF

 

6-6

AFN·OI491A·06

 

Page 149
Image 149
Intel mcs-48 manual S04SH/S04SH-1/S035HL/S035HL-1, Waveforms, Read From External Data Memory, 8035HL-1