전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

M27C400-80XB1TR 데이터시트(PDF) 10 Page - STMicroelectronics

부품명 M27C400-80XB1TR
상세설명  4 Mbit (512Kb x8 or 256Kb x16) UV EPROM and OTP EPROM
Download  14 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M27C400-80XB1TR 데이터시트(HTML) 10 Page - STMicroelectronics

Back Button M27C400-80XB1TR Datasheet HTML 6Page - STMicroelectronics M27C400-80XB1TR Datasheet HTML 7Page - STMicroelectronics M27C400-80XB1TR Datasheet HTML 8Page - STMicroelectronics M27C400-80XB1TR Datasheet HTML 9Page - STMicroelectronics M27C400-80XB1TR Datasheet HTML 10Page - STMicroelectronics M27C400-80XB1TR Datasheet HTML 11Page - STMicroelectronics M27C400-80XB1TR Datasheet HTML 12Page - STMicroelectronics M27C400-80XB1TR Datasheet HTML 13Page - STMicroelectronics M27C400-80XB1TR Datasheet HTML 14Page - STMicroelectronics  
Zoom Inzoom in Zoom Outzoom out
 10 / 14 page
background image
M27C400
10/14
Figure 9. Programming Flowchart
AI01044B
n = 0
Last
Addr
VERIFY
E = 50
µs Pulse
++n
= 25
++ Addr
VCC = 6.25V, VPP = 12.5V
FAIL
CHECK ALL WORDS
BYTEVPP =VIH
1st: VCC = 6V
2nd: VCC = 4.2V
YES
NO
YES
NO
YES
NO
PRESTO III Programming Algorithm
The PRESTO III Programming Algorithm allows
the whole array to be programed with a guaran-
teed margin in a typical time of 26 seconds. Pro-
gramming with PRESTO III consists of applying a
sequence of 50µs program pulses to each word
until a correct verify occurs (see Figure 9). During
programing and verify operation a MARGIN
MODE circuit is automatically activated to guaran-
tee that each cell is programed with enough mar-
gin. No overpromise pulse is applied since the
verify in MARGIN MODE provides the necessary
margin to each programmed cell.
Program Inhibit
Programming of multiple M27C400s in parallel
with different data is also easily accomplished. Ex-
cept for E, all like inputs including G of the parallel
M27C400 may be common. A TTL low level pulse
applied to a M27C400's E input and VPP at 12.5V,
will program that M27C400. A high level E input in-
hibits the other M27C400s from being pro-
grammed.
Program Verify
A verify (read) should be performed on the pro-
grammed bits to determine that they were correct-
ly programmed. The verify is accomplished with E
at VIH and G at VIL, VPP at 12.5V and VCC at
6.25V.
On-Board Programming
The M27C400 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 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 M27C400. To activate the ES
mode, the programming equipment must force
11.5V to 12.5V on address line A9 of the
M27C400, 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) represents the manufacturer
code and byte 1 (A0 = VIH) the device identifier
code. For the STMicroelectronics M27C400, these
two identifier 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 M27C400 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 M27C400 in
about 3 years, while it would take approximately 1
week to cause erasure when exposed to direct
sunlight. If the M27C400 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 M27C400 window to prevent unintentional era-
sure. The recommended erasure procedure for
M27C400 is exposure to short wave ultraviolet
light which has a wavelength of 2537 Å. The inte-
grated dose (i.e. UV intensity x exposure time) for
erasure should be a minimum of 30 W-sec/cm2.
The erasure time with this dosage is approximate-
ly 30 to 40 minutes using an ultraviolet lamp with
12000 µW/cm2 power rating. The M27C400
should be placed within 2.5cm (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 - M27C400-80XB1TR

제조업체부품명데이터시트상세설명
logo
STMicroelectronics
M27C4001 STMICROELECTRONICS-M27C4001 Datasheet
158Kb / 17P
   4 Mbit 512Kb x 8 UV EPROM and OTP EPROM
M27C4001 STMICROELECTRONICS-M27C4001 Datasheet
215Kb / 24P
   4 Mbit (512Kb x 8) UV EPROM and OTP EPROM
M27C4001-10B1 STMICROELECTRONICS-M27C4001-10B1 Datasheet
158Kb / 17P
   4 Mbit 512Kb x 8 UV EPROM and OTP EPROM
M27C4001-10B1 STMICROELECTRONICS-M27C4001-10B1 Datasheet
215Kb / 24P
   4 Mbit (512Kb x 8) UV EPROM and OTP EPROM
M27C4001-10B1TR STMICROELECTRONICS-M27C4001-10B1TR Datasheet
158Kb / 17P
   4 Mbit 512Kb x 8 UV EPROM and OTP EPROM
More results

유사한 설명 - M27C400-80XB1TR

제조업체부품명데이터시트상세설명
logo
STMicroelectronics
M27V400 STMICROELECTRONICS-M27V400 Datasheet
117Kb / 14P
   4 Mbit (512Kb x8 or 256Kb x16) UV EPROM and OTP EPROM
July 2000
M27W400 STMICROELECTRONICS-M27W400 Datasheet
140Kb / 15P
   4 Mbit 512Kb x8 or 256Kb x16 Low Voltage UV EPROM and OTP EPROM
M27C800 STMICROELECTRONICS-M27C800 Datasheet
171Kb / 18P
   8 Mbit 1Mb x8 or 512Kb x16 UV EPROM and OTP EPROM
M27C4002 STMICROELECTRONICS-M27C4002 Datasheet
196Kb / 18P
   4 Mbit (256Kb x16) UV EPROM and OTP EPROM
M27C4002 STMICROELECTRONICS-M27C4002_06 Datasheet
225Kb / 24P
   4 Mbit (256Kb x16) UV EPROM and OTP EPROM
M27C4002-10C1 STMICROELECTRONICS-M27C4002-10C1 Datasheet
236Kb / 24P
   4 Mbit (256Kb x16) UV EPROM and OTP EPROM
M27V800 STMICROELECTRONICS-M27V800 Datasheet
108Kb / 16P
   8 Mbit 1Mb x8 or 512Kb x16 Low Voltage UV EPROM and OTP EPROM
M27V401 STMICROELECTRONICS-M27V401 Datasheet
103Kb / 15P
   4 Mbit (512Kb x8) Low Voltage UV EPROM and OTP EPROM
May 1998
M27W402 STMICROELECTRONICS-M27W402 Datasheet
103Kb / 15P
   4 Mbit 256Kb x16 Low Voltage UV EPROM and OTP EPROM
M27C160 STMICROELECTRONICS-M27C160 Datasheet
187Kb / 19P
   16 Mbit 2Mb x8 or 1Mb x16 UV EPROM and OTP EPROM
More results


Html Pages

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


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