28C64AT-25/L Microchip Technology, 28C64AT-25/L Datasheet - Page 3

• Manufacturer Part Number: 28C64AT-25/L
• Description: IC EEPROM 64KBIT 250NS 32PLCC
• Manufacturer: Microchip Technology

Specifications of 28C64AT-25/L

• Format - Memory: EEPROMs - Parallel
• Memory Type: EEPROM
• Memory Size: 64K (8K x 8)
• Speed: 250ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 32-PLCC
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification

TABLE 1-3:
FIGURE 1-1:
Address to Output Delay
CE to Output Delay
OE to Output Delay
CE or OE High to Output Float
Output Hold from Address, CE
or OE, whichever occurs first.
Endurance
Note 1: Not 100% tested.
Address
Notes:
2004 Microchip Technology Inc.
Data
WE
2: This parameter is not tested but guaranteed by characterization. For endurance estimates in a specific appli-
OE
CE
(1) t
(2) OE may be delayed up to t
(3) This parameter is sampled and is not 100% tested
cation, please consult the Total Endurance Model which can be obtained on our BBS or website.
Parameter
V
V
V
V
V
V
V
V
V
V
OFF
IH
IL
IH
IL
IH
IL
OH
OL
IH
IL
is specified for OE or CE, whichever occurs first
READ OPERATION AC CHARACTERISTICS
READ WAVEFORMS
High Z
AC Testing Waveform:
Output Load:
Input Rise and Fall Times:
Ambient Temperature:
Symbol
t
t
ACC
t
t
t
OFF
—
OE
OH
CE
CE
- t
OE
Min
1M
28C64A
—
—
—
0
0
after the falling edge of CE without impact on t
Max
-15
150
150
70
50
—
—
Address Valid
t
ACC
t
CE(2)
Min
1M
28C64A
—
—
—
0
0
20 ns
Commercial (C):
V
1 TTL Load + 100 pF
Industrial
t
OE(2)
IH
= 2.4V; V
Max
-20
200
200
80
55
—
—
Min
28C64A
IL
1M
(I):
—
—
—
0
0
= 0.45V; V
Valid Output
Tamb =
Tamb =
Max
-25
250
250
100
70
—
—
OH
cycles 25°C, Vcc =
t
Units
CE
OH
= 2.0V; V
ns
ns
ns
ns
ns
t
28C64A
OFF(1,3)
-40°C to +85°C
0°C to +70°C
DS11109K-page 3
OE = CE = V
OE = V
CE = V
(Note 1)
(Note 1)
5.0V, Block
Mode (Note 2)
Conditions
OL
= 0.8V
IL
High Z
IL
IL