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參數(shù)資料
| 型號(hào)： | 27C160 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Modular Connector Wall Faceplate; For Use With:Panduits NetKey Keystone Modules and Duplex Fiber Optic Modules; Color:White; Number of Positions:1 |
| 中文描述： | 16兆位的2Mb x8或1兆x16紫外線存儲(chǔ)器和OTP存儲(chǔ)器 |
| 文件頁(yè)數(shù)： | 10/16頁(yè) |
| 文件大小： | 110K |
| 代理商： | 27C160 |
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M27C160
10/16
On-Board Programming
The M27C160 can be directly programmed in the
application circuit. See the relevant Application
Note AN620.
Electronic Signature
The Electronic Signature (ES) mode allows the
reading out of a binary code from an EPROM that
will identify its manufacturer and type. This mode
is intended for use by programming equipment to
automatically matchthe device to be programmed
with its corresponding programming algorithm.
The ES mode is functional in the 25
°
C
±
5
°
C am-
bient temperaturerange that is required when pro-
gramming the M27C160. To activate the ES
mode, the programming equipment must force
11.5V to 12.5V on address line A9 of the
M27C160, with V
PP
=V
CC
=5V. Twoidentifier bytes
may then be sequenced from the device outputs
by toggling address line A0 from V
IL
to V
IH
. All oth-
er address lines must be held at V
IL
during Elec-
tronic Signature mode.
Byte 0 (A0=V
IL
) represents themanufacturer code
and byte 1 (A0=V
IH
) the device identifier code. For
the STMicroelectronics M27C160, these two iden-
tifier bytes are given in Table 4 and can be read-
out on outputs Q0 to Q7.
ERASURE OPERATION (applies to UV EPROM)
The erasure characteristics of the M27C160 is
such that erasure begins when the cells are ex-
posed to light with wavelengths shorter than ap-
proximately 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 fluo-
rescent lighting could erase a typical M27C160 in
about 3 years, while it would takeapproximately 1
week to cause erasure when exposed to direct
sunlight. If the M27C160 is to be exposed to these
types of lighting conditions for extended periods of
time, it is suggested that opaque labelsbeput over
the M27C160 windowto prevent unintentionalera-
sure. The recommended erasure procedure for
M27C160 is exposure to short wave ultraviolet
light which has a wavelength of 2537 . The inte-
grated dose (i.e. UV intensity x exposure time) for
erasure should be a minimum of 30 W-sec/cm
2.
The erasure time with this dosage is approximate-
ly 30 to 40 minutes using an ultraviolet lamp with
12000
μ
W/cm
2
power rating. The M27C160
should be placed within 2.5cm (1 inch) of the lamp
tubes during the erasure. Somelamps have a filter
on their tubes which should be removed before
erasure.
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相關(guān)代理商/技術(shù)參數(shù) |
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| 27C1610-10 | 制造商:MCNIX 制造商全稱:Macronix International 功能描述:16M-BIT [2M x 8/1M x 16] CMOS OTP ROM |
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| 27C16A-15IL | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:16K (2K x 8) CMOS EEPROM |
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| 27C16A-15ITS | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:16K (2K x 8) CMOS EEPROM |
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