Motor de Búsqueda de Datasheet de Componentes Electrónicos
  Spanish  ▼
ALLDATASHEET.ES

X  

M27C4001-90B1TR Datasheet(PDF) 9 Page - STMicroelectronics

No. de pieza M27C4001-90B1TR
Descripción Electrónicos  4 Mbit 512Kb x 8 UV EPROM and OTP EPROM
Download  17 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M27C4001-90B1TR Datasheet(HTML) 9 Page - STMicroelectronics

Back Button M27C4001-90B1TR Datasheet HTML 5Page - STMicroelectronics M27C4001-90B1TR Datasheet HTML 6Page - STMicroelectronics M27C4001-90B1TR Datasheet HTML 7Page - STMicroelectronics M27C4001-90B1TR Datasheet HTML 8Page - STMicroelectronics M27C4001-90B1TR Datasheet HTML 9Page - STMicroelectronics M27C4001-90B1TR Datasheet HTML 10Page - STMicroelectronics M27C4001-90B1TR Datasheet HTML 11Page - STMicroelectronics M27C4001-90B1TR Datasheet HTML 12Page - STMicroelectronics M27C4001-90B1TR Datasheet HTML 13Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 9 / 17 page
background image
9/17
M27C4001
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 M27C4001. To activate the ES
mode, the programming equipment must force
11.5V to 12.5V on address line A9 of the
M27C4001 with VPP = VCC = 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
STMicroelectronics M27C4001, these two identifi-
er bytes are given in Table 4 and can be read-out
on outputs Q7 to Q0.
ERASURE OPERATION (applies to UV EPROM)
The erasure characteristics of the M27C4001 are
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. Data
shows that constant exposure to room level fluo-
rescent 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 pe-
riods of time, it is suggested that opaque labels be
put over the M27C4001 window to prevent unin-
tentional erasure. The recommended erasure pro-
cedure for the M27C4001 is exposure to short
wave ultraviolet light which has wavelength of
2537 Å. The integrated dose (i.e. UV intensity x
exposure time) for erasure should be a minimum
of 15 W-sec/cm2. The erasure time with this dos-
age is approximately 15 to 20 minutes using an ul-
traviolet lamp with 12000
µW/cm2 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.


Número de pieza similar - M27C4001-90B1TR

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
STMicroelectronics
M27C4001-90B1 STMICROELECTRONICS-M27C4001-90B1 Datasheet
215Kb / 24P
   4 Mbit (512Kb x 8) UV EPROM and OTP EPROM
More results

Descripción similar - M27C4001-90B1TR

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
STMicroelectronics
M27C4001 STMICROELECTRONICS-M27C4001_06 Datasheet
215Kb / 24P
   4 Mbit (512Kb x 8) UV EPROM and OTP EPROM
M27C4001-10F1 STMICROELECTRONICS-M27C4001-10F1 Datasheet
220Kb / 24P
   4 Mbit (512Kb x 8) UV EPROM and OTP EPROM
M27W401 STMICROELECTRONICS-M27W401_06 Datasheet
211Kb / 23P
   4 Mbit (512Kb x 8) Low Voltage UV EPROM and OTP EPROM
August 2008 Rev 3
M27W401 STMICROELECTRONICS-M27W401 Datasheet
102Kb / 15P
   4 Mbit 512Kb x 8 Low Voltage UV EPROM and OTP EPROM
M27C405 STMICROELECTRONICS-M27C405 Datasheet
99Kb / 15P
   4 Mbit (512Kb x 8) OTP EPROM
March 1999
M27V401 STMICROELECTRONICS-M27V401 Datasheet
103Kb / 15P
   4 Mbit (512Kb x8) Low Voltage UV EPROM and OTP EPROM
May 1998
M27C801 STMICROELECTRONICS-M27C801 Datasheet
153Kb / 16P
   8 Mbit 1Mb x 8 UV EPROM and OTP EPROM
M27C801 STMICROELECTRONICS-M27C801_07 Datasheet
207Kb / 24P
   8 Mbit (1Mb x 8) UV EPROM and OTP EPROM
M27C801-100N1 STMICROELECTRONICS-M27C801-100N1 Datasheet
212Kb / 24P
   8 Mbit (1Mb x 8) UV EPROM and OTP EPROM
September 2007 Rev 6
M27C400 STMICROELECTRONICS-M27C400 Datasheet
121Kb / 14P
   4 Mbit (512Kb x8 or 256Kb x16) UV EPROM and OTP EPROM
May 1999
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17


Datasheet Descarga

Go To PDF Page


Enlace URL




Política de Privacidad
ALLDATASHEET.ES
¿ALLDATASHEET es útil para Ud.?  [ DONATE ] 

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Intercambio de Enlaces   |   Lista de Fabricantes
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