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參數資料
| 型號： | M27W102-150B6TR |
| 廠商： | 意法半導體 |
| 英文描述： | Hex Drivers 14-PDIP 0 to 70 |
| 中文描述： | 1兆位64Kb的x16低壓紫外線可擦寫可編程只讀存儲器和OTP存儲器 |
| 文件頁數： | 9/15頁 |
| 文件大?。?/td> | 104K |
| 代理商： | M27W102-150B6TR |
9/15
M27W102
ERASURE OPERATION (
appliesto
UVEPROM)
The erasure characteristics of the M27W102 is
such that erasure begins when the cells are ex-
posed to light with wavelengths shorter than ap-
proximately 4000. Itshould benoted that sunlight
and some type of fluorescent lamps have wave-
lengths in the 3000-4000 range. Research
shows that constant exposure to room level fluo-
rescent lighting could erase a typical M27W102 in
about 3 years, while it would takeapproximately 1
week to cause erasure when exposed to direct
sunlight. If the M27W102 is to beexposed tothese
types of lighting conditions for extended periods of
time, it is suggested that opaque labelsbeput over
the M27W102 window to prevent unintentional
erasure. The recommended erasure procedure for
the M27W102is exposureto shortwave 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 15 W-sec/cm
2
.
The erasure time with this dosage is approximate-
ly 15 to 20 minutes using an ultraviolet lamp with
12000
μ
W/cm
2
power rating. The M27W102
should be placed within 2.5 cm (1inch) of the lamp
tubes during the erasure. Somelamps have a filter
on their tubes which should be removed before
erasure.
On-Board Programming
The M27W102 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 M27W102. To activate the ES
mode, the programming equipment must force
11.5V to 12.5V on address line A9 of the
M27W102 with V
PP
= V
CC
= 5V. Two identifier
bytes maythen be sequenced fromthe device out-
puts bytoggling address line A0from V
IL
toV
IH
. All
other address lines must be held at V
IL
during
Electronic Signature mode. Byte 0 (A0 = V
IL
) rep-
resents the manufacturer code and byte 1
(A0 = V
IH
) the device identifier code. For the
STMicroelectronics M27W102,these two identifier
bytes are given in Table 4 and can be read-out on
outputs Q7 to Q0.
Note that the M27W102 and M27C1002 have the
same byte identifier.
相關PDF資料 |
PDF描述 |
|---|---|
| M27W102-150F6TR | Hex Drivers 14-PDIP 0 to 70 |
| M27W102-150K6TR | Hex Drivers 14-SO 0 to 70 |
| M27W102-150N6TR | Hex Drivers 14-SO 0 to 70 |
| M27W102-80N6TR | 1 Mbit 64Kb x16 Low Voltage UV EPROM and OTP EPROM |
| M27W102-80K6TR | Dual J-K Positive-Edge-Triggered Flip-Flops With Clear And Preset 16-SOIC 0 to 70 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| M27W102-80K6 | 制造商:STMicroelectronics 功能描述:2N2222A-DIE - Rail/Tube 制造商:STMicroelectronics 功能描述:IC EPROM OTP 1MBIT 44-PLCC |
| M27W102-80N6 | 制造商:STMicroelectronics 功能描述: |
| M27W201-120K6TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2 Mbit (256Kb x 8) Low Voltage UV EPROM and OTP EPROM |
| M27W201-120N6TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2 Mbit (256Kb x 8) Low Voltage UV EPROM and OTP EPROM |
| M27W201-120NZ6TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2 Mbit 256Kb x 8 Low Voltage UV EPROM and OTP EPROM |
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