Datenblatt-pdf.com


27C128 Schematic ( PDF Datasheet ) - Microchip

Teilenummer 27C128
Beschreibung 128K (16K x 8) CMOS EPROM
Hersteller Microchip
Logo Microchip Logo 




Gesamt 12 Seiten
27C128 Datasheet, Funktion
27C128
128K (16K x 8) CMOS EPROM
FEATURES
• High speed performance
- 120 ns access time available
• CMOS Technology for low power consumption
- 20 mA Active current
- 100 µA Standby current
• Factory programming available
• Auto-insertion-compatible plastic packages
• Auto ID aids automated programming
• Separate chip enable and output enable controls
• High speed “express” programming algorithm
• Organized 16K x 8: JEDEC standard pinouts
- 28-pin Dual-in-line package
- 32-pin PLCC Package
- 28-pin SOIC package
- Tape and reel
• Available for the following temperature ranges:
- Commercial: 0˚C to +70˚C
- Industrial:
-40˚C to +85˚C
- Automotive:
-40˚C to +125˚C
DESCRIPTION
The Microchip Technology Inc. 27C128 is a CMOS
128K bit (electrically) Programmable Read Only Mem-
ory. The device is organized as 16K words by 8 bits
(16K bytes). Accessing individual bytes from an
address transition or from power-up (chip enable pin
going low) is accomplished in less than 120 ns. CMOS
design and processing enables this part to be used in
systems where reduced power consumption and high
reliability are requirements.A complete family of pack-
ages is offered to provide the most flexibility in applica-
tions. For surface mount applications, PLCC, SOIC, or
TSOP packaging is available. Tape and reel packaging
is also available for PLCC or SOIC packages. UV eras-
able versions are also available.
A complete family of packages is offered to provide the
most flexibility in applications. For surface mount appli-
cations, PLCC or SOIC packaging is available. Tape
and reel packaging is also available for PLCC or SOIC
packages.
PACKAGE TYPES
DIP/SOIC
VPP • 1
A12 2
A7 3
A6 4
A5 5
A4 6
A3 7
A2 8
A1 9
A0 10
O0 11
O1 12
O2 13
VSS 14
28 VCC
27 PGM
26 A13
25 A8
24 A9
23 A11
22 OE
21 A10
20 CE
19 O7
18 O6
17 O5
16 O4
15 O3
PLCC
A6 5
A5 6
A4 7
A3 8
A2 9
A1 10
A0 11
NC 12
O0 13
29 A8
28 A9
27 A11
26 NC
25 OE
24 A10
23 CE
22 O7
21 O6
© 1996 Microchip Technology Inc.
This document was created with FrameMaker 4 0 4
DS11003K-page 1






27C128 Datasheet, Funktion
27C128
1.3 Standby Mode
The standby mode is defined when the CE pin is high
(VIH) and a program mode is not defined.
When these conditions are met, the supply current will
drop from 20 mA to 100 µA.
1.4 Output Enable
This feature eliminates bus contention in microproces-
sor-based systems in which multiple devices may drive
the bus. The outputs go into a high impedance state
when the following condition is true:
• The OE and PGM pins are both high.
1.5 Erase Mode (U.V. Windowed Versions)
Windowed products offer the capability to erase the
memory array. The memory matrix is erased to the all
1’s state when exposed to ultraviolet light. To ensure
complete erasure, a dose of 15 watt-second/cm2 is
required. This means that the device window must be
placed within one inch and directly underneath an ultra-
violet lamp with a wavelength of 2537 Angstroms,
intensity of 12,000µW/cm2 for approximately 20 min-
utes.
1.6 Programming Mode
The Express Algorithm has been developed to improve
the programming throughput times in a production
environment. Up to ten 100-microsecond pulses are
applied until the byte is verified. No overprogramming
is required. A flowchart of the express algorithm is
shown in Figure 1-3.
Programming takes place when:
a) VCC is brought to the proper voltage,
b) VPP is brought to the proper VH level,
c) the CE pin is low,
d) the OE pin is high, and
e) the PGM pin is low.
Since the erased state is “1” in the array, programming
of “0” is required. The address to be programmed is set
via pins A0-A13 and the data to be programmed is pre-
sented to pins O0-O7. When data and address are sta-
ble, OE is high, CE is low and a low-going pulse on the
PGM line programs that location.
1.7 Verify
After the array has been programmed it must be veri-
fied to ensure all the bits have been correctly pro-
grammed. This mode is entered when all the following
conditions are met:
a) VCC is at the proper level,
b) VPP is at the proper VH level,
c) the CE line is low,
d) the PGM line is high, and
e) the OE line is low.
1.8 Inhibit
When programming multiple devices in parallel with dif-
ferent data, only CE or PGM need be under separate
control to each device. By pulsing the CE or PGM line
low on a particular device in conjunction with the PGM
or CE line low, that device will be programmed; all other
devices with CE or PGM held high will not be pro-
grammed with the data, although address and data will
be available on their input pins (i.e., when a high level
is present on CE or PGM); and the device is inhibited
from programming.
1.9 Identity Mode
In this mode specific data is output which identifies the
manufacturer as Microchip Technology Inc. and device
type. This mode is entered when Pin A9 is taken to VH
(11.5V to 12.5V). The CE and OE lines must be at VIL.
A0 is used to access any of the two non-erasable bytes
whose data appears on O0 through O7.
Pin Input Output
Identity
A0
0 OOOOOOO
76543210
H
e
x
Manufacturer VIL 0 0 1 0 1 0 0 1 29
Device Type* VIH 1 0 0 0 0 0 1 1 83
* Code subject to change
DS11003K-page 6
© 1996 Microchip Technology Inc.

6 Page









27C128 pdf, datenblatt
WORLDWIDE SALES & SERVICE
AMERICAS
Corporate Office
Microchip Technology Inc.
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: 602 786-7200 Fax: 602 786-7277
Technical Support: 602 786-7627
Web: http://www.microchip.com
Atlanta
Microchip Technology Inc.
500 Sugar Mill Road, Suite 200B
Atlanta, GA 30350
Tel: 770 640-0034 Fax: 770 640-0307
Boston
Microchip Technology Inc.
5 Mount Royal Avenue
Marlborough, MA 01752
Tel: 508 480-9990 Fax: 508 480-8575
Chicago
Microchip Technology Inc.
333 Pierce Road, Suite 180
Itasca, IL 60143
Tel: 708 285-0071 Fax: 708 285-0075
Dallas
Microchip Technology Inc.
14651 Dallas Parkway, Suite 816
Dallas, TX 75240-8809
Tel: 972 991-7177 Fax: 972 991-8588
Dayton
Microchip Technology Inc.
Suite 150
Two Prestige Place
Miamisburg, OH 45342
Tel: 513 291-1654 Fax: 513 291-9175
Los Angeles
Microchip Technology Inc.
18201 Von Karman, Suite 1090
Irvine, CA 92612
Tel: 714 263-1888 Fax: 714 263-1338
New York
Microchip Technmgy Inc.
150 Motor Parkway, Suite 416
Hauppauge, NY 11788
Tel: 516 273-5305 Fax: 516 273-5335
San Jose
Microchip Technology Inc.
2107 North First Street, Suite 590
San Jose, CA 95131
Tel: 408 436-7950 Fax: 408 436-7955
Toronto
Microchip Technology Inc.
5925 Airport Road, Suite 200
Mississauga, Ontario L4V 1W1, Canada
Tel: 905 405-6279 Fax: 905 405-6253
ASIA/PACIFIC
China
Microchip Technology
Unit 406 of Shanghai Golden Bridge Bldg.
2077 Yan’an Road West, Hongiao District
Shanghai, Peoples Republic of China
Tel: 86 21 6275 5700
Fax: 011 86 21 6275 5060
Hong Kong
Microchip Technology
RM 3801B, Tower Two
Metroplaza
223 Hing Fong Road
Kwai Fong, N.T. Hong Kong
Tel: 852 2 401 1200 Fax: 852 2 401 3431
India
Microchip Technology
No. 6, Legacy, Convent Road
Bangalore 560 025 India
Tel: 91 80 526 3148 Fax: 91 80 559 9840
Korea
Microchip Technology
168-1, Youngbo Bldg. 3 Floor
Samsung-Dong, Kangnam-Ku,
Seoul, Korea
Tel: 82 2 554 7200 Fax: 82 2 558 5934
Singapore
Microchip Technology
200 Middle Road
#10-03 Prime Centre
Singapore 188980
Tel: 65 334 8870 Fax: 65 334 8850
Taiwan, R.O.C
Microchip Technology
10F-1C 207
Tung Hua North Road
Taipei, Taiwan, ROC
Tel: 886 2 717 7175 Fax: 886 2 545 0139
EUROPE
United Kingdom
Arizona Microchip Technology Ltd.
Unit 6, The Courtyard
Meadow Bank, Furlong Road
Bourne End, Buckinghamshire SL8 5AJ
Tel: 44 1628 850303 Fax: 44 1628 850178
France
Arizona Microchip Technology SARL
Zone Industrielle de la Bonde
2 Rue du Buisson aux Fraises
91300 Massy - France
Tel: 33 1 69 53 63 20 Fax: 33 1 69 30 90 79
Germany
Arizona Microchip Technology GmbH
Gustav-Heinemann-Ring 125
D-81739 Muenchen, Germany
Tel: 49 89 627 144 0 Fax: 49 89 627 144 44
Italy
Arizona Microchip Technology SRL
Centro Direzionale Colleone Pas Taurus 1
Viale Colleoni 1
20041 Agrate Brianza
Milan Italy
Tel: 39 39 6899939 Fax: 39 39 689 9883
JAPAN
Microchip Technology Intl. Inc.
Benex S-1 6F
3-18-20, Shin Yokohama
Kohoku-Ku, Yokohama
Kanagawa 222 Japan
Tel: 81 45 471 6166 Fax: 81 45 471 6122
9/3/96
All rights reserved. © 1996, Microchip Technology Incorporated, USA. 9/96
Printed on recycled paper.
Information contained in this publication regarding device applications and the like is intended through suggestion only and may be superseded by updates. No repre-
sentation or warranty is given and no liability is assumed by Microchip Technology Incorporated with respect to the accuracy or use of such information, or infringement
of patents or other intellectual property rights arising from such use or otherwise. Use of Microchip’s products as critical components in life support systems is not autho-
rized except with express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any intellectual property rights. The Microchip logo and
name are registered trademarks of Microchip Technology Inc. All rights reserved. All other trademarks mentioned herein are the property of their respective companies.
DS11003K-page 12
© 1996 Microchip Technology Inc.

12 Page





SeitenGesamt 12 Seiten
PDF Download[ 27C128 Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
27C128128K (16K x 8) CMOS EPROMMicrochip
Microchip
27C128128K (16K x 8) CMOS UV Erasable PROMGeneral Semiconductor
General Semiconductor
27C128128K (16K x 8) CMOS EPROMMicrochip Technology
Microchip Technology
27C128 CY27C128Cypress Semiconductor
Cypress Semiconductor

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche