M87C257-10C1X Просмотр технического описания (PDF) - STMicroelectronics
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M87C257-10C1X Datasheet PDF : 13 Pages
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M87C257
Table 7. Read Mode DC Characteristics (1)
(TA = 0 to 70°C, –40 to 85°C, –40 to 105°C or –40 to 125°C; VCC = 5V ± 5% or 5V ± 10%; VPP = VCC)
Symbol
Parameter
Test Condition
Min
Max
Unit
ILI
Input Leakage Current
0V ≤ VIN ≤ VCC
ILO
Output Leakage Current
0V ≤ VOUT ≤ VCC
ICC
Supply Current
E = VIL, G = VIL,
IOUT = 0mA, f = 5MHz
ICC1
Supply Current
(Standby) TTL
E = VIH, ASVPP = VIH, Address Switching
E = VIH, ASVPP = VIL, Address Stable
ICC2
Supply Current (Standby)
CMOS
E ≥ VCC – 0.2V, ASVPP ≥ VCC – 0.2V,
Address Switching
E ≥ VCC – 0.2V, ASVPP = VSS,
Address Stable
±10
µA
±10
µA
30
mA
10
mA
1
mA
6
mA
100
µA
IPP
Program Current
VPP = VCC
100
µA
VIL
VIH (2)
Input Low Voltage
Input High Voltage
–0.3
2
0.8
V
VCC + 1
V
VOL Output Low Voltage
IOL = 2.1mA
0.4
V
VOH Output High Voltage
IOH = –1mA
VCC – 0.8V
V
Notes: 1. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.
2. Maximum DC voltage on Output is VCC +0.5V.
Table 8A. Read Mode AC Characteristics (1)
(TA = 0 to 70°C, –40 to 85°C, –40 to 105°C or –40 to 125°C; VCC = 5V ± 5% or 5V ± 10%; VPP = VCC)
Symbol Alt
Parameter
Test
Condition
-45 (3)
M87C257
-60
-70
-80 Unit
Min Max Min Max Min Max Min Max
tAVQV
tACC
Address Valid to
Output Valid
E = VIL, G = VIL
45
60
70
80 ns
tAVASL
tAL
Address Valid to
Address Strobe Low
7
7
7
7
ns
tASHASL
tLL
Address Strobe High
to Address Strobe Low
35
35 35
35
ns
tASLAX
tLA
Address Strobe Low to
Address Transition
20
20 20
20
ns
tASLGL
tLOE
Address Strobe Low to
Output Enable Low
20
20 20
20
ns
tELQV
tCE
Chip Enable Low to
Output Valid
G = VIL
45
60
70
80 ns
tGLQV
tOE
Output Enable Low to
Output Valid
E = VIL
25
30
35
40 ns
tEHQZ (2)
tDF
Chip Enable High to
Output Hi-Z
G = VIL
0 25 0 30 0 30 0 40 ns
tGHQZ (2)
tDF
Output Enable High to
Output Hi-Z
E = VIL
0 25 0 30 0 30 0 40 ns
tAXQX
tOH
Address Transition to
Output Transition
E = VIL,
G = VIL
0
0
0
0
ns
Notes: 1. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.
2. Sampled only, not 100% tested.
3. In case of 45ns speed see High Speed AC measurement conditions.
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