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參數(shù)資料
| 型號(hào)： | 27C1024 |
| 廠商： | Macronix International Co., Ltd. |
| 英文描述： | 1M-BIT [128K x 8/64K x 16] CMOS EPROM |
| 中文描述： | 100萬位[128K的x 8/64K × 16]的CMOS存儲(chǔ)器 |
| 文件頁數(shù)： | 9/15頁 |
| 文件大?。?/td> | 102K |
| 代理商： | 27C1024 |
AI00707C
n = 0
Last
Addr
VERIFY
P = 100
μ
s Pulse
++n
= 25
++ Addr
VCC= 6.25V, VPP= 12.75V
FAIL
CHECK ALL WORDS
1st: VCC= 6V
2nd: VCC= 4.2V
YES
NO
YES
NO
YES
NO
Figure 7. ProgrammingFlowchart
ProgramInhibit
Programming of multiple M27C1024s in parallel
with different data is also easily accomplished.
Except for E, all like inputs including G of the
parallel M27C1024 may be common. A TTL low
level pulse applied to a M27C1024’sP input, with
E low and V
PP
at 12.75V, will program that
M27C1024. Ahigh level E input inhibits the other
M27C1024sfrom beingprogrammed.
ProgramVerify
A verify (read) should be performed on the pro-
grammedbitsto determinethattheywerecorrectly
programmed. The verify is accomplished with E
and G at V
IL
, P at V
IH
, V
PP
at 12.75V and V
CC
at
6.25V.
On-Board Programming
TheM27C1024can be directlyprogrammedin the
application circuit. See the relevant Application
NoteAN620.
ElectronicSignature
The Electronic Signature (ES) mode allows the
readingout of a binary code from an EPROM that
will identify its manufacturerand type. This mode
is intended for use by programming equipment to
automaticallymatch the device to be programmed
withitscorrespondingprogrammingalgorithm.The
ES mode is functional in the 25
°
C
±
5
°
Cambient
temperaturerange that is required whenprogram-
mingthe M27C1024.To activatethe ESmode, the
programmingequipmentmustforce11.5Vto 12.5V
on address line A9 of the M27C1024 with V
PP
=
V
CC
= 5V. Two identifier bytes may then be se-
quenced from the device outputs by toggling ad-
dresslineA0fromV
IL
to V
IH
. Allotheraddresslines
must be held at V
IL
during Electronic Signature
mode. Byte 0 (A0=V
IL
) represents the manufac-
turercodeandbyte1(A0=V
IH
) thedeviceidentifier
code. For the STMicroelectronics M27C1024,
thesetwo iden-tifierbytesare given in Table4 and
can be read-outon outputsQ0 to Q7.
ERASUREOPERATION(appliestoUV EPROM)
The erasure characteristics of the M27C1024 is
such that erasure begins when the cells are ex-
posed to light with wavelengths shorter than ap-
proximately4000.Itshouldbe notedthatsunlight
and some type of fluorescent lamps have wave-
lengthsin the3000-4000range.Researchshows
that constant exposure to room level fluorescent
lightingcoulderasea typicalM27C1024in about3
years,while it would take approximately1 weekto
cause erasure when exposed to direct sunlight. If
the M27C1024 is to be exposed to thesetypes of
lighting conditions for extended periods of time, it
is suggested that opaque labels be put over the
M27C1024 window to prevent unintentional era-
sure.The recommendederasureprocedureforthe
M27C1024 is exposure to short wave ultraviolet
lightwhichhas wavelength2537 . Theintegrated
dose(i.e. UVintensityx exposuretime)forerasure
should be a minimum of 15 W-sec/cm
2
. The era-
sure time with this dosage is approximately15 to
20 minutes using an ultraviolet lamp with
12000
μ
W/cm
2
power rating. The M27C1024
shouldbe placedwithin2.5 cm (1inch)of thelamp
tubesduringthe erasure.Somelamps havea filter
on their tubes which should be removed before
erasure.
9/15
M27C1024
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PDF描述 |
|---|---|
| 27C1024 | 1-Megabit 64K x 16 OTP EPROM |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 27C1024-10 | 制造商:MCNIX 制造商全稱:Macronix International 功能描述:1M-BIT [128K x 8/64K x 16] CMOS EPROM |
| 27C102410C1 | 制造商: 功能描述: |
| 27C1024-10C1 | 制造商: 功能描述: 制造商:undefined 功能描述: |
| 27C1024-12 | 制造商:MCNIX 制造商全稱:Macronix International 功能描述:1M-BIT [128K x 8/64K x 16] CMOS EPROM |
| 27C1024-15 | 制造商:MCNIX 制造商全稱:Macronix International 功能描述:1M-BIT [128K x 8/64K x 16] CMOS EPROM |
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