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M87C257 датащи(PDF) 17 Page - STMicroelectronics

номер детали M87C257
подробное описание детали  Address Latched 256 Kbit (32Kb x8) UV EPROM and OTP EPROM
PDF  22 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M87C257 датащи(HTML) 17 Page - STMicroelectronics

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M87C257
DC and AC parameters
17/22
Figure 8.
Programming and Verify modes AC waveforms
Table 11.
Programming mode AC characteristics(1) (2)
1.
TA = 25 °C; VCC = 6.25V ± 0.25V; VPP = 12.75V ± 0.25V
2.
VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.
Symbol
Alt
Parameter
Test
Condition
Min
Max
Unit
tAVEL
tAS
Address Valid to Chip Enable Low
2
µs
tQVEL
tDS
Input Valid to Chip Enable Low
2
µs
tVPHEL
tVPS VPP High to Chip Enable Low
2
µs
tVCHEL
tVCS VCC High to Chip Enable Low
2
µs
tELEH
tPW
Chip Enable Program Pulse Width
95
105
µs
tEHQX
tDH
Chip Enable High to Input Transition
2
µs
tQXGL
tOES Input Transition to Output Enable Low
2
µs
tGLQV
tOE
Output Enable Low to Output Valid
100
ns
tGHQZ
tDFP Output Enable High to Output Hi-Z
0
130
ns
tGHAX
tAH
Output Enable High to Address
Transition
0ns
tAVEL
VALID
AI00557
A0-A14
Q0-Q7
ASVPP
VCC
G
DATA IN
DATA OUT
E
tQVEL
tVPHEL
tVCHEL
tEHQX
tELEH
tGLQV
tQXGL
tGHQZ
tGHAX
PROGRAM
VERIFY



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