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參數(shù)資料
| 型號： | M27C4002-70XF6TR |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 4 Mbit (256Kb x16) UV EPROM and OTP EPROM |
| 中文描述： | 4兆位（256Kb的× 16）紫外線存儲器和OTP存儲器 |
| 文件頁數(shù)： | 11/24頁 |
| 文件大?。?/td> | 164K |
| 代理商： | M27C4002-70XF6TR |
M27C4002
Device operation
11/24
M27C4002, these two identifier bytes are given in
Table 3: Electronic Signature
and can be
read-out on outputs Q7 to Q0.
2.10
Erasure operation (applies to UV EPROM)
The erasure characteristics of the M27C4002 are such that erasure begins when the cells
are exposed to light with wavelengths shorter than approximately 4000 . It should be noted
that sunlight and some type of fluorescent lamps have wavelengths in the 3000-4000
range. Research shows that constant exposure to room level fluorescent lighting could
erase a typical M27C4002 in about 3 years, while it would take approximately 1 week to
cause erasure when exposed to direct sunlight. If the M27C4002 is to be exposed to these
types of lighting conditions for extended periods of time, it is suggested that opaque labels
be put over the M27C4002 window to prevent unintentional erasure. The recommended
erasure procedure for the M27C4002 is exposure to short wave ultraviolet light which has
wavelength 2537 . The integrated dose (i.e. UV intensity x exposure time) for erasure
should be a minimum of 15 W-sec/cm
2
. The erasure time with this dosage is approximately
15 to 20 minutes using an ultraviolet lamp with 12000 μW/cm
2
power rating. The M27C4002
should be placed within 2.5cm (1 inch) of the lamp tubes during the erasure. Some lamps
have a filter on their tubes which should be removed before erasure.
Table 2.
Table 3.
Operating modes
(1)
1.
X = V
IH
or V
IL
, V
ID
= 12V ± 0.5V.
Electronic Signature
(1)
Mode
E
G
A9
V
PP
Q15-Q0
Read
V
IL
V
IL
X
V
CC
or V
SS
Data Out
Output Disable
V
IL
V
IH
X
V
CC
or V
SS
Hi-Z
Program
V
IL
Pulse
V
IH
X
V
PP
Data In
Verify
V
IH
V
IL
X
V
PP
Data Out
Program Inhibit
V
IH
V
IH
X
V
PP
Hi-Z
Standby
V
IH
X
X
V
CC
or V
SS
Hi-Z
Electronic Signature
V
IL
V
IL
V
ID
V
CC
Codes
1.
Outputs Q15-Q8 are set to '0'.
Identifier
A0
Q7
Q6
Q5
Q4
Q3
Q2
Q1
Q0
Hex Data
Manufacturer’s
Code
V
IL
0
0
1
0
0
0
0
0
20h
Device Code
V
IH
0
1
0
0
0
1
0
0
44h
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M27C4002-80C1 | 功能描述:可擦除可編程ROM 4M (256Kx16) 80ns RoHS:否 制造商:Maxim Integrated 類型: 存儲容量:1024 bit 組織:1 K x 1 接口類型: 工作電流:5 uA 編程電壓: 工作電源電壓:2.8 V to 6 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-92 |
| M27C4002-80C6 | 功能描述:可擦除可編程ROM 4M (256Kx16) 80ns RoHS:否 制造商:Maxim Integrated 類型: 存儲容量:1024 bit 組織:1 K x 1 接口類型: 工作電流:5 uA 編程電壓: 工作電源電壓:2.8 V to 6 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-92 |
| M27C4002-80C6TR | 功能描述:可擦除可編程ROM 4M (256Kx16) 80ns RoHS:否 制造商:Maxim Integrated 類型: 存儲容量:1024 bit 組織:1 K x 1 接口類型: 工作電流:5 uA 編程電壓: 工作電源電壓:2.8 V to 6 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-92 |
| M27C4002-80XF1 | 功能描述:可擦除可編程ROM 4M (256Kx16) 80ns RoHS:否 制造商:Maxim Integrated 類型: 存儲容量:1024 bit 組織:1 K x 1 接口類型: 工作電流:5 uA 編程電壓: 工作電源電壓:2.8 V to 6 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-92 |
| M27C4002-90C1 | 功能描述:可擦除可編程ROM 4M (256Kx16) 90ns RoHS:否 制造商:Maxim Integrated 類型: 存儲容量:1024 bit 組織:1 K x 1 接口類型: 工作電流:5 uA 編程電壓: 工作電源電壓:2.8 V to 6 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-92 |
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