FM27C040 データシートの表示（PDF） - Fairchild Semiconductor
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FM27C040 Datasheet PDF : 11 Pages
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Programming Waveform (Note 13)
ADDRESSES
2V
0.8V
2V
DATA
0.8V
6.25V
VPP
12.75V
VCC
Program
Address N
tAS
Data In Stable
ADD N
Hi-Z
tDS
tDH
tVCS
tVPS
Program
Verify
tAH
Data Out Valid
ADD N
tDF
CE/PGM 2V
0.8V
OE 2V
0.8V
tPW
tOES
tOE
DS800033-5
Programming Characteristics (Notes 11, 12, 13, 14)
Symbol
tAS
tOES
tDS
tVPS
tVCS
tAH
tDH
tDF
tPW
tOE
IPP
ICC
TA
VCC
VPP
tFR
VIL
VIH
tIN
tOUT
Parameter
Address Setup Time
OE Setup Time
Data Setup Time
VPP Setup Time
VCC Setup Time
Address Hold Time
Data Hold Time
Output Enable to Output Float Delay
Program Pulse Width
Data Valid from OE
VPP Supply Current during
Programming Pulse
VCC Supply Current
Temperature Ambient
Power Supply Voltage
Programming Supply Voltage
Input Rise, Fall Time
Input Low Voltage
Input High Voltage
Input Timing Reference Voltage
Output Timing Reference Voltage
Conditions
CE/PGM = X
CE/PGM = X
CE/PGM = VIL
Min
1
1
1
1
1
0
1
0
45
20
6.25
12.5
5
-0.1
2.4
0.8
0.8
Typ
50
25
6.5
12.75
0.0
4.0
Max
60
105
100
30
30
30
6.75
13.0
0.45
2.0
2.0
Units
µs
µs
µs
µs
µs
µs
µs
ns
µs
ns
mA
mA
°C
V
V
ns
V
V
V
V
Note 11: Fairchild’s standard product warranty applies only to devices programmed to specifications described herein.
Note 12: VCC must be applied simultaneously or before VPP and removed simultaneously or after VPP. The EPROM must not be inserted into or removed from a board with
voltage applied to VPP or VCC.
Note 13: The maximum absolute allowable voltage which may be applied to the VPP pin during programming is 14V. Care must be taken when switching the VPP supply to
prevent any overshoot from exceeding this 14V maximum specification. At least a 0.1 µF capacitor is required across VPP, VCC to GND to suppress spurious voltage transients
which may damage the device.
Note 14: During power up the CE/PGM pin must be brought high (≥VIH) either coincident with or before power is applied to VPP.
FM27C040 Rev. A
5
www.fairchildsemi.com
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