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參數(shù)資料
| 型號： | M27C4001-90XB6 |
| 廠商： | 意法半導體 |
| 英文描述： | 4 Mbit (512Kb x 8) UV EPROM and OTP EPROM |
| 中文描述： | 4兆位（512KB的× 8）紫外線存儲器和OTP存儲器 |
| 文件頁數(shù)： | 11/24頁 |
| 文件大?。?/td> | 149K |
| 代理商： | M27C4001-90XB6 |
M27C4001
Device operation
11/25
2.10
Erasure operation (applies to UV EPROM)
The erasure characteristics of the M27C4001 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. Data shows that constant exposure to room level fluorescent lighting could erase a
typical M27C4001 in about 3 years, while it would take approximately 1 week to cause
erasure when exposed to direct sunlight. If the M27C4001 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 M27C4001 window to prevent unintentional erasure. The recommended erasure
procedure for the M27C4001 is exposure to short wave ultraviolet light which has
wavelength of 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
μ
W/cm
2
power rating. The M27C4001
should be placed within 2.5 cm (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.
Mode
E
G
A9
V
pp
Q7 - 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
Electronic Signature
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
Electronic
Signature
V
IH
0
1
0
0
0
0
0
1
41h
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| M27C4002-10B1 | 功能描述:可擦除可編程ROM 4M (256Kx16) 100ns 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 安裝風格:Through Hole 封裝 / 箱體:TO-92 |
| M27C4002-10C1 | 功能描述:可擦除可編程ROM 4M (256Kx16) 100ns 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 安裝風格:Through Hole 封裝 / 箱體:TO-92 |
| M27C4002-10C1 | 制造商:STMicroelectronics 功能描述:PROM OTP CMOS 4MB 27C4002 PLCC44 |
| M27C4002-10C1TR | 功能描述:可擦除可編程ROM 4M (256Kx16) 100ns 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 安裝風格:Through Hole 封裝 / 箱體:TO-92 |
| M27C4002-10C6 | 功能描述:可擦除可編程ROM 4M (256Kx16) 100ns 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 安裝風格:Through Hole 封裝 / 箱體:TO-92 |
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