Intel mcs-48 manual 8755A, Comment, Symbol Parameter MIN MAX VIL, Ready Hold Time

Models: mcs-48

1 478
Download 478 pages 26.88 Kb
Page 220
Image 220

8755A

ABSOLUTE MAXIMUM RATINGS·

TemperatureUnderBias

-10oe to +70o e

Storage Temperature

-65°eto +150 o e

Voltage on Any Pin

 

With Respect to Ground

-0.5 to +7V·

Power Dissipation

1.5W

·Except for programming voltage.

 

'COMMENT

Stresses above those listed under "Absolute Maximum Ratings" maycause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those

Indicated in the operational sections of this specification is not implied.

Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

D.C. CHARACTERISTICS (TA = o°c to 70°C; VCC = 5V ± 5%)

SYMBOL

PARAMETER

MIN.

MAX.

VIL

Input Low Voltage

-0.5

0.8

VIH

Input High Voltage

2.0

Veet<l·5

VOL

Output Low Voltage

 

0.45

VOH

Output High Voltage

2.4

 

IlL

Input Lea kage

 

10

ILO

Output Leakage Current

 

tl0

Ice

Vec Supply Current

 

180

A.C. CHARACTERISTICS (TA = o°c to 70°C; Vee = 5V ± 5%)

UNITS

TEST CONDITIONS

V

 

V

 

V

IoL=2mA

V

IoH = -400JjA

JjA

VIN = Vcc to OV

JjA

0.45V ';;VOUT';;Vee

mA

 

SYMBOL

PARAMETER

MIN.

MAX.

UNITS

TEST CONDITIONS

teye

Clock Cycle Time

320

 

ns

 

T,

ClK Pulse Width

80

 

ns

CLOAO = 150 pF

 

 

 

 

 

T2

ClK Pulse Width

120

 

ns

(See Figure 3)

tf ,t,

ClK Rise and Fall Time

 

30

ns

 

tAL

Address to Latch Set Up Time

50

 

ns

 

tLA

Address Hold Time after latch

80

 

ns

 

tLe

latch to READ/WRITE Control

100

 

ns

 

tAD

Valid Data Out Delay from READ Control

 

170

ns

 

tAO

Address Stable to Data Out Valid

 

450

ns

150 pF load

tLL

Latch Enable Width

100

 

ns

 

tAOF

Data Bus Float after READ

0

100

ns

 

teL

READIWRITE Control to latch Enable

20

 

ns

 

tee

R EADIWR ITE Control Width

250

 

ns

 

tow

Data In to WRITE Set Up Time

150

 

ns

 

two

Data In Hold Time After WR ITE

30

 

ns

 

twp

WR ITE to Port Output

 

400

ns

 

tpA

Port Input Set Up Time

50

 

ns

 

tAP

Port Input Hold Time

50

 

ns

 

tAYH

READY HOLD TIME

0

160

ns

 

tAAY

ADDRESS (CE) to READY

 

160

ns

 

tAv

Recovery Time between Controls

300

 

ns

 

tADE

Data Out Delay from READ Control

10

 

ns

 

tLO

ALE to Data Out Valid

 

350

ns

Preliminary

6-77

Page 220
Image 220
Intel mcs-48 manual 8755A, Comment, Symbol Parameter MIN MAX VIL, Ready Hold Time