27C04A Microchip Technology, 27C04A Datasheet - Page 4

• Manufacturer Part Number: 27C04A
• Description: 4K (512 x 8) CMOS EEPROM
• Manufacturer: Microchip Technology

28C04A
TABLE 1-4:
FIGURE 1-2:
DS11126F-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
Write Cycle Time (28C04A)
Write Cycle Time (28C04AF)
Note 1: A write cycle can be initiated be CE or WE going low, whichever occurs last. The data is latched on the pos-
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 of CE or WE, whichever occurs first.
the positive edge of WE or CE, whichever occurs first.
OE
Parameter
V
V
V
V
V
V
V
V
IH
IL
IH
IL
IH
IL
IH
IL
BYTE WRITE AC CHARACTERISTICS
PROGRAMMING WAVEFORMS
AC Testing Waveform:
Output Load:
Input Rise/Fall Times:
Ambient Temperature:
t
t
OES
AS
Symbol
t
t
t
t
WPH
t
t
t
WPL
OEH
t
t
t
OES
t
WC
WC
DH
AS
AH
DS
DV
t
DV
Min
100
10
50
50
10
50
10
10
t
AH
t
WPL
t
DS
V
1 TTL Load + 100 pF
20 nsec
Commercial (C): Tamb= 0˚C to 70˚C
Industrial
IH
= 2.4V; V
1000
Max
200
1
t
DH
IL
(I): Tamb= -40˚C to 85˚C
= 0.45V; V
t
OEH
Units
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
s
1996 Microchip Technology Inc.
OH
Note 1
Note 2
0.5 ms typical
100 s typical
= 2.0V; V
Remarks
OL
= 0.8V
DH
after