28C64A-15IP Просмотр технического описания (PDF) - Microchip Technology

Номер в каталоге

Компоненты Описание

производитель

28C64A-15IP

64K (8K x 8) CMOS EEPROM

Microchip Technology 

28C64A

TABLE 1-3: READ OPERATION AC CHARACTERISTICS

AC Testing Waveform:

Output Load:

Input Rise and Fall Times:

Ambient Temperature:

VIH = 2.4V; VIL = 0.45V; VOH = 2.0V; VOL = 0.8V

1 TTL Load + 100 pF

20 ns

Commercial (C): Tamb = 0°C to +70°C

Industrial (I): Tamb = -40°C to +85°C

Parameter

Symbol

28C64A-15

Min Max

28C64A-20

Min Max

28C64A-25

Units

Min Max

Conditions

Address to Output Delay

tACC

— 150 — 200 — 250 ns OE = CE = VIL

CE to Output Delay

tCE

— 150 — 200 — 250 ns OE = VIL

OE to Output Delay

tOE

—

70

—

80

— 100 ns CE = VIL

CE or OE High to Output Float

tOFF

0

50

0

55

0

70 ns (Note 1)

Output Hold from Address, CE

tOH

or OE, whichever occurs first.

0

—

0

—

0

— ns (Note 1)

Endurance

—

1M — 1M — 1M — cycles 25°C, Vcc =

5.0V, Block

Mode (Note 2)

Note 1: Not 100% tested.

2: This parameter is not tested but guaranteed by characterization. For endurance estimates in a specific appli-

cation, please consult the Total Endurance Model which can be obtained on our BBS or website.

FIGURE 1-1: READ WAVEFORMS

V IH

Address

V IL

V IH

CE

V IL

V IH

OE

V IL

Data

VOH

VOL

V IH

WE

V IL

High Z

Address Valid

t CE(2)

t OE(2)

t ACC

t OFF(1,3)

t OH

Valid Output

High Z

Notes: (1) t OFF is specified for OE or CE, whichever occurs first

(2) OE may be delayed up to t CE - t OE after the falling edge of CE without impact on t CE

(3) This parameter is sampled and is not 100% tested

 2004 Microchip Technology Inc.

DS11109K-page 3

Share Link: