參數(shù)資料
型號(hào): 28LV64A
廠商: Microchip Technology Inc.
英文描述: 64K (8K x 8) Low Voltage CMOS EEPROM(低壓,64K位, CMOS 并行EEPROM)
中文描述: 64K的(8K的× 8)低電壓的CMOS EEPROM的(低壓,64K的位,并行的CMOS EEPROM的)
文件頁數(shù): 4/8頁
文件大?。?/td> 65K
代理商: 28LV64A
28LV64A
DS21113B-page 4
Preliminary
1996 Microchip Technology Inc.
TABLE 1-4:
BYTE WRITE AC CHARACTERISTICS
FIGURE 1-2:
PROGRAMMING WAVEFORMS
AC Testing Waveform:
Output Load:
Input Rise/Fall Times:
Ambient Temperature:
V
1 TTL Load + 100 pF
20 ns
Commercial (C): Tamb = 0
°
C to +70
°
C
Industrial (I) : Tamb = -40
°
C to +85
°
C
IH
= 2.0V; V
IL
= 0.6V; V
OH
= V
OL
= V
CC
/2
Parameter
Sym
Min
Max
Units
Remarks
Address Set-Up Time
t
AS
10
ns
Address Hold Time
t
AH
100
ns
Data Set-Up Time
t
DS
120
ns
Data Hold Time
t
DH
10
ns
Write Pulse Width
t
WPL
150
ns
(Note 1)
OE Hold Time
t
OEH
10
ns
OE Set-Up Time
t
OES
10
ns
Data Valid Time
t
DV
1000
ns
(Note 2)
Time to Device Busy
t
DB
50
ns
Write Cycle Time (28LV64A)
t
WC
3
ms
1.5 ms typical
Note 1: A write cycle can be initiated be CE or WE going low, whichever occurs last. The data is latched on the
positive edge of CE or WE, whichever occurs first.
2:
Data must be valid within 1000ns max. after a write cycle is initiated and must be stable at least until t
DH
after the positive edge of WE or CE, whichever occurs first.
V
IH
V
IL
V
IH
V
IL
V
IH
V
IL
V
OH
V
OL
V
IH
V
IL
twc
t
DB
t
OEH
t
OES
t
DH
t
DS
t
WPL
t
AH
t
AS
t
DV
Busy
Ready
Rdy/Busy
OE
Data In
Address
CE, WE
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