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M27V322-120XF1 Scheda tecnica(PDF) 7 Page - STMicroelectronics

Il numero della parte M27V322-120XF1
Spiegazioni elettronici  32 Mbit (2Mb x16) Low Voltage UV EPROM and OTP EPROM
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M27V322-120XF1 Scheda tecnica(HTML) 7 Page - STMicroelectronics

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M27V322
Table 10. MARGIN MODE AC Characteristics (1)
(TA = 25 °C; VCC = 6.25V ± 0.25V; VPP = 12V ± 0.25V)
Note: 1. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.
Table 11. Programming Mode AC Characteristics (1)
(TA = 25 °C; VCC = 6.25V ± 0.25V; VPP = 12V ± 0.25V)
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
Min
Max
Unit
tA9HVPH
tAS9
VA9 High to VPP High
2
µs
tVPHEL
tVPS
VPP High to Chip Enable Low
2µs
tA10HEH
tAS10
VA10 High to Chip Enable High (Set)
1µs
tA10LEH
tAS10
VA10 Low to Chip Enable High (Reset)
1µs
tEXA10X
tAH10
Chip Enable Transition to VA10 Transition
1µs
tEXVPX
tVPH
Chip Enable Transition to VPP Transition
2µs
tVPXA9X
tAH9
VPP Transition to VA9 Transition
2µs
Symbol
Alt
Parameter
Test Condition
Min
Max
Unit
tAVEL
tAS
Address Valid to Chip Enable Low
1
µs
tQVEL
tDS
Input Valid to Chip Enable Low
1
µs
tVCHEL
tVCS
VCC High to Chip Enable Low
2µs
tVPHEL
tOES
VPP High to Chip Enable Low
1µs
tVPLVPH
tPRT
VPP Rise Time
50
ns
tELEH
tPW
Chip Enable Program Pulse Width (Initial)
45
55
µs
tEHQX
tDH
Chip Enable High to Input Transition
2
µs
tEHVPX
tOEH
Chip Enable High to VPP Transition
2µs
tVPLEL
tVR
VPP Low to Chip Enable Low
1µs
tELQV
tDV
Chip Enable Low to Output Valid
1
µs
tEHQZ
(2)
tDFP
Chip Enable High to Output Hi-Z
0
130
ns
tEHAX
tAH
Chip Enable High to Address Transition
0
ns
Programming
When delivered (and after each erasure for UV
EPROM), all bits of the M27V322 are in the "1"
state. Data is introduced by selectively program-
ming "0"s into the desired bit locations. Although
only "0"s will be programmed, both "1"s and "0"s
can be present in the data word. The only way to
change a "0" to a "1" is by die exposition to ultravi-
olet light (UV EPROM). The M27V322 is in the
programming mode when VPP input is at 12.V,
GVPP is at VIH and E is pulsed to VIL. The data to
be programmed is applied to 16 bits in parallel to
the data output pins. The levels required for the
address and data inputs are TTL. VCC is specified
to be 6.25V ± 0.25V.


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