28C64A-15 Просмотр технического описания (PDF) - Microchip Technology
Номер в каталоге
Компоненты Описание
производитель
28C64A-15 Datasheet PDF : 8 Pages
| |||
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
28C64A-15
Symbol
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
VIH
Address
VIL
VIH
CE
VIL
VIH
OE
VIL
VOH
Data
VOL
VIH
WE
VIL
High Z
Address Valid
tCE(2)
tOE(2)
tACC
tOFF(1,3)
tOH
Valid Output
High Z
Notes: (1) tOFF 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 tCE
(3) This parameter is sampled and is not 100% tested
© 1996 Microchip Technology Inc.
DS11109H-page 3
Share Link: 