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M27C2001-80L6TR ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 6 Page - STMicroelectronics

๋ถ€ํ’ˆ๋ช… M27C2001-80L6TR
์ƒ์„ธ๋‚ด์šฉ  2 Mbit (256Kb x 8) UV EPROM and OTP EPROM
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M27C2001-80L6TR ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 6 Page - STMicroelectronics

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M27C2001
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Figure 5. Read Mode AC Waveforms
AI00719B
tAXQX
tEHQZ
A0-A17
E
G
Q0-Q7
tAVQV
tGHQZ
tGLQV
tELQV
VALID
Hi-Z
VALID
Table 8B. Read Mode AC Characteristics (1)
(TA = 0 to 70
ยฐC or โ€“40 to 85 ยฐC; VCC =5V ยฑ 5% or 5V ยฑ 10%; VPP =VCC)
Note: 1. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.
2. Sampled only, not 100% tested.
Symbol
Alt
Parameter
Test Condition
M27V2001
Unit
-10
-12
-15/-20/-25
Min
Max
Min
Max
Min
Max
tAVQV
tACC
Address Valid to Output
Valid
E= VIL,G = VIL
100
120
150
ns
tELQV
tCE
Chip Enable Low to
Output Valid
G= VIL
100
120
150
ns
tGLQV
tOE
Output Enable Low to
Output Valid
E= VIL
50
50
60
ns
tEHQZ
(2)
tDF
Chip Enable High to
Output Hi-Z
G= VIL
030
0
40050
ns
tGHQZ
(2)
tDF
Output Enable High to
Output Hi-Z
E= VIL
030
0
40050
ns
tAXQX
tOH
Address Transition to
Output Transition
E= VIL,G = VIL
00
0
ns
Programming
When delivered (and after each erasure for UV
EPROM), all bits of the M27C2001 are in the โ€™1โ€™
state. Data is introduced by selectively program-
ming โ€™0โ€™s into the desired bit locations. Although
only โ€™0โ€™s will be programmed, both โ€™1โ€™s and โ€™0โ€™s can
be present in the data word. The only way to
change a โ€™0โ€™ to a โ€™1โ€™ is by die exposition to ultravio-
let light (UV EPROM). The M27C2001 is in the
programming mode when VPP input is at 12.75V,
Eis at VIL and P is pulsed to VIL. The data to be
programmed is applied to 8 bits in parallel to the
data output pins. The levels required for the ad-
dress and data inputs are TTL. VCC is specified to
be 6.25V
ยฑ0.25V.


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