28C64A-20/P Microchip Technology, 28C64A-20/P Datasheet - Page 4

• Manufacturer Part Number: 28C64A-20/P
• Description: IC EEPROM 64KBIT 200NS 28DIP
• Manufacturer: Microchip Technology

Specifications of 28C64A-20/P

• Format - Memory: EEPROMs - Parallel
• Memory Type: EEPROM
• Memory Size: 64K (8K x 8)
• Speed: 200ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification

28C64A
TABLE 1-4:
FIGURE 1-2:
DS11109K-page 4
Address Set-Up Time
Address Hold Time
Data Set-Up Time
Data Hold Time
Write Pulse Width
Write Pulse High Time
OE Hold Time
OE Set-Up Time
Data Valid Time
Time to Device Busy
Write Cycle Time (
Write Cycle Time (
Note 1: A write cycle can be initiated be CE or WE going low, whichever occurs last. The data is latched on the pos-
Rdy/Busy
Address
CE, WE
Data In
2: Data must be valid within 1000ns max. after a write cycle is initiated and must be stable at least until t
itive edge WE, whichever occurs first.
after the positive edge of WE or CE, whichever occurs first.
OE
Parameter
V
V
V
V
V
V
V
V
V
V
OH
OL
IH
IL
IH
IL
IH
IL
IH
IL
BYTE WRITE AC CHARACTERISTICS
PROGRAMMING WAVEFORMS
28C64A
28C64A
)
F)
t
AC Testing Waveform:
Output Load:
Input Rise/Fall Times:
Ambient Temperature:
t
OES
AS
Symbol
t
t
t
t
WPH
t
t
WPL
OEH
t
t
t
t
OES
t
t
WC
WC
DH
AS
AH
DS
DV
DB
t
DV
t
Min
100
AH
10
50
50
10
50
10
10
—
—
—
2
t
t
WPL
WC
t
DS
V
1 TTL Load + 100 pF
20 ns
Commercial (C):
Industrial
IH
= 2.4V; V
1000
Max
200
50
—
—
—
—
—
—
—
—
1
t
DH
IL
(I):
t
t
DB
OEH
= 0.45V; V
Units
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Tamb =
Tamb =
s
2004 Microchip Technology Inc.
OH
Note 1
Note 2
0.5 ms typical
100 s typical
Busy
= 2.0V; V
0°C to +70°C
-40°C to +85°C
Remarks
OL
Ready
= 0.8V
DH