전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

M27C256B-60N6TR 데이터시트(PDF) 9 Page - STMicroelectronics

부품명 M27C256B-60N6TR
상세설명  256 Kbit (32Kb x 8) UV EPROM and OTP EPROM
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M27C256B-60N6TR 데이터시트(HTML) 9 Page - STMicroelectronics

Back Button M27C256B-60N6TR Datasheet HTML 5Page - STMicroelectronics M27C256B-60N6TR Datasheet HTML 6Page - STMicroelectronics M27C256B-60N6TR Datasheet HTML 7Page - STMicroelectronics M27C256B-60N6TR Datasheet HTML 8Page - STMicroelectronics M27C256B-60N6TR Datasheet HTML 9Page - STMicroelectronics M27C256B-60N6TR Datasheet HTML 10Page - STMicroelectronics M27C256B-60N6TR Datasheet HTML 11Page - STMicroelectronics M27C256B-60N6TR Datasheet HTML 12Page - STMicroelectronics M27C256B-60N6TR Datasheet HTML 13Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 9 / 16 page
background image
9/16
M27C256B
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 match the device to be programmed
with its corresponding programming algorithm.
The ES mode is functional in the 25°C ± 5°C am-
bient temperature range that is required when pro-
gramming the M27C256B. To activate the ES
mode, the programming equipment must force
11.5V to 12.5V on address line A9 of the
M27C256B, with VCC = VPP = 5V. Two identifier
bytes may then be sequenced from the device out-
puts by toggling address line A0 from VIL to VIH. All
other address lines must be held at VIL during
Electronic Signature mode. Byte 0 (A0 = VIL) rep-
resents the manufacturer code and byte 1
(A0 = VIH) the device identifier code. For the ST-
Microelectronics M27C256B, these two identifier
bytes are given in Table 4 and can be read-out on
outputs Q7 to Q0.
ERASURE OPERATION (applies for UV EPROM)
The erasure characteristics of the M27C256B is
such that erasure begins when the cells are ex-
posed to light with wavelengths shorter than ap-
proximately 4000 Å. It should be noted that
sunlight and some type of fluorescent lamps have
wavelengths in the 3000-4000 Å range. Research
shows that constant exposure to room level fluo-
rescent lighting could erase a typical M27C256B in
about 3 years, while it would take approximately 1
week to cause erasure when exposed to direct
sunlight. If the M27C256B is to be exposed to
these types of lighting conditions for extended pe-
riods of time, it is suggested that opaque labels be
put over the M27C256B window to prevent unin-
tentional erasure. The recommended erasure pro-
cedure for the M27C256B is exposure to short
wave ultraviolet light which has wavelength
2537Å. The integrated dose (i.e. UV intensity x ex-
posure time) for erasure should be a minimum of
15 W-sec/cm2. The erasure time with this dosage
is approximately 15 to 20 minutes using an ultravi-
olet lamp with 12000 µW/cm2 power rating. The
M27C256B 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.


유사한 부품 번호 - M27C256B-60N6TR

제조업체부품명데이터시트상세설명
logo
STMicroelectronics
M27C256B-60B1TR STMICROELECTRONICS-M27C256B-60B1TR Datasheet
197Kb / 24P
   256 Kbit (32Kb 횞 8) UV EPROM and OTP EPROM
M27C256B-60B3TR STMICROELECTRONICS-M27C256B-60B3TR Datasheet
197Kb / 24P
   256 Kbit (32Kb 횞 8) UV EPROM and OTP EPROM
M27C256B-60B6TR STMICROELECTRONICS-M27C256B-60B6TR Datasheet
197Kb / 24P
   256 Kbit (32Kb 횞 8) UV EPROM and OTP EPROM
M27C256B-60C1TR STMICROELECTRONICS-M27C256B-60C1TR Datasheet
197Kb / 24P
   256 Kbit (32Kb 횞 8) UV EPROM and OTP EPROM
M27C256B-60C3TR STMICROELECTRONICS-M27C256B-60C3TR Datasheet
197Kb / 24P
   256 Kbit (32Kb 횞 8) UV EPROM and OTP EPROM
More results

유사한 설명 - M27C256B-60N6TR

제조업체부품명데이터시트상세설명
logo
STMicroelectronics
M27C256B-12F1 STMICROELECTRONICS-M27C256B-12F1 Datasheet
203Kb / 24P
   256 Kbit (32Kb 횞 8) UV EPROM and OTP EPROM
M27C256B STMICROELECTRONICS-M27C256B_06 Datasheet
197Kb / 24P
   256 Kbit (32Kb 횞 8) UV EPROM and OTP EPROM
M27W256 STMICROELECTRONICS-M27W256 Datasheet
101Kb / 15P
   256 Kbit 32Kb x 8 Low Voltage UV EPROM and OTP EPROM
M27V256 STMICROELECTRONICS-M27V256 Datasheet
103Kb / 15P
   256 Kbit (32Kb x 8) Low Voltage UV EPROM and OTP EPROM
May 1998
M87C257 STMICROELECTRONICS-M87C257_06 Datasheet
164Kb / 22P
   Address Latched 256 Kbit (32Kb x8) UV EPROM and OTP EPROM
M27C64A STMICROELECTRONICS-M27C64A Datasheet
105Kb / 12P
   64 Kbit (8Kb x 8) UV EPROM and OTP EPROM
March 1998
M27C1001-10F1 STMICROELECTRONICS-M27C1001-10F1 Datasheet
250Kb / 24P
   1 Mbit (128 Kbit x 8) UV EPROM and OTP EPROM
M27C1001-70F1 STMICROELECTRONICS-M27C1001-70F1 Datasheet
250Kb / 24P
   1 Mbit (128 Kbit x 8) UV EPROM and OTP EPROM
M27C1001 STMICROELECTRONICS-M27C1001_06 Datasheet
218Kb / 24P
   1 Mbit (128 Kbit x 8) UV EPROM and OTP EPROM
M27C1001-12F6 STMICROELECTRONICS-M27C1001-12F6 Datasheet
250Kb / 24P
   1 Mbit (128 Kbit x 8) UV EPROM and OTP EPROM
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16


데이터시트 다운로드

Go To PDF Page


링크 URL




개인정보취급방침
ALLDATASHEET.CO.KR
ALLDATASHEET 가 귀하에 도움이 되셨나요?  [ DONATE ] 

Alldatasheet는?   |   광고문의   |   운영자에게 연락하기   |   개인정보취급방침   |   링크교환   |   제조사별 검색
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com