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M28C256 数据表(PDF) 9 Page - STMicroelectronics

部件名 M28C256
功能描述  256 Kbit (32Kb x8) Parallel EEPROM with Software Data Protection
PDF  21 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

M28C256 数据表(HTML) 9 Page - STMicroelectronics

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background image
Symbol
Alt
Parameter
Test Condition
M28256
Unit
-90
-12
-15
-20
min
max
min
max
min
max
min
max
tAVQV
tACC
Address Valid to
Output Valid
E= VIL,G = VIL
90
120
150
200
ns
tELQV
tCE
Chip Enable Low to
Output Valid
G= VIL
90
120
150
200
ns
tGLQV
tOE
Output Enable Low
to Output Valid
E=VIL
40
45
50
50
ns
tEHQZ
(1)
tDF
Chip Enable High to
Output Hi-Z
G= VIL
0
40
0
45
0
50
0
50
ns
tGHQZ
(1)
tDF
Output Enable High
to Output Hi-Z
E= VIL
0
40
0
45
0
50
0
50
ns
tAXQX
tOH
Address Transition
to Output Transition
E=VIL,G = VIL
0000
ns
Note: 1. Output Hi-Z is defined as the point at which data is no longer driven.
Table 10. Read Mode AC Characteristics
(TA = 0 to 70
°C or –40 to 85°C; VCC = 4.5V to 5.5V)
Symbol
Alt
Parameter
Test Condition
M28256-W
Unit
-12
-15
-20
-25
min
max
min
max
min
max
min
max
tAVQV
tACC
Address Valid to
Output Valid
E= VIL,G = VIL
120
150
200
250
ns
tELQV
tCE
Chip Enable Low to
Output Valid
G= VIL
120
150
200
250
ns
tGLQV
tOE
Output Enable Low
to Output Valid
E=VIL
45
70
80
100
ns
tEHQZ
(1)
tDF
Chip Enable High to
Output Hi-Z
G= VIL
0
45
0
50
0
55
0
60
ns
tGHQZ
(1)
tDF
Output Enable High
to Output Hi-Z
E= VIL
0
45
0
50
0
55
0
60
ns
tAXQX
tOH
Address Transition
to Output Transition
E=VIL,G = VIL
0000
ns
Note: 1. Output Hi-Z is defined as the point at which data is no longer driven.
Table 11. Read Mode AC Characteristics
(TA = 0 to 70
°C or –40 to 85°C; VCC = 2.7V to 3.6V)
9/21
M28256



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