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UPD23C16340 Fiches technique(PDF) 9 Page - NEC

No de pièce UPD23C16340
Description  16M-BIT MASK-PROGRAMMABLE ROM 2M-WORD BY 8-BIT (BYTE MODE) / 1M-WORD BY 16-BIT (WORD MODE) PAGE ACCESS MODE
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Fabricant  NEC [NEC]
Site Internet  http://www.nec.com/
Logo NEC - NEC

UPD23C16340 Fiches technique(HTML) 9 Page - NEC

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9
µµµµPD23C16340, 23C16380
Data Sheet M15709EJ2V0DS
AC Characteristics (TA = –10 to +70 °C, VCC = 2.7 to 3.6 V)
Parameter
Symbol
Test condition
VCC = 3.0 V
± 0.3 V
VCC = 3.3 V
± 0.3 V
Unit
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
Address access time
tACC
90
85
ns
Page access time
tPAC
25
25
ns
Address skew time
tSKEW
Note
10
10
ns
Chip enable access time
tCE
90
85
ns
Output enable access time
tOE
25
25
ns
Output hold time
tOH
00
ns
Output disable time
tDF
0
25
0
25
ns
WORD, /BYTE access time
tWB
90
85
ns
Note tSKEW indicates the following three types of time depending on the condition.
1) When switching /CE from high level to low level, tSKEW is the time from the /CE low level input point until the
next address is determined.
2) When switching /CE from low level to high level, tSKEW is the time from the address change start point to the
/CE high level input point.
3) When /CE is fixed to low level, tSKEW is the time from the address change start point until the next address is
determined.
Since specs are defined for tSKEW only when /CE is active, tSKEW is not subject to limitations when /CE is switched
from high level to low level following address determination, or when the address is changed after /CE is switched
from low level to high level.
Remark tDF is the time from inactivation of Chip Enable input (/CE) or Output Enable input (/OE or OE) to
high impedance state output.
AC Test Conditions
Input waveform (Rise / Fall time
≤≤≤≤ 5 ns)
Test points
1.4 V
1.4 V
Output waveform
Test points
1.4 V
1.4 V
Output load
1TTL + 100 pF


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