27lv256 Microchip Technology Inc., 27lv256 Datasheet

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27lv256

Manufacturer Part Number
27lv256
Description
256k 32k X 8 Low-voltage Cmos Eprom
Manufacturer
Microchip Technology Inc.
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
27lv256-20/L
Manufacturer:
MICROCH
Quantity:
20 000
FEATURES
• Wide voltage range 3.0V to 5.5V
• High speed performance
• CMOS Technology for low power consumption
• 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 32K x 8: JEDEC standard pinouts
• Data Retention > 200 years
• Available for the following temperature ranges:
DESCRIPTION
The Microchip Technology Inc. 27LV256 is a low volt-
age (3.0 volt) CMOS EPROM designed for battery
powered applications. The device is organized as a
32K x 8 (32K-Byte) non-volatile memory product. The
27LV256 consumes only 8 mA maximum of active cur-
rent during a 3.0 volt read operation therefore improv-
ing battery performance. This device is designed for
very low voltage applications where conventional 5.0
volt only EPROMS can not be used. Accessing individ-
ual bytes from an address transition or from power-up
(chip enable pin going low) is accomplished in less than
200 ns at 3.0V. This device allows systems designers
the ability to use low voltage non-volatile memory with
today’s' low voltage microprocessors and peripherals in
battery powered applications.
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.
- 200 ns access time available at 3.0V
- 8 mA Active current at 3.0V
- 20 mA Active current at 5.5V
- 100 A Standby current
- 28-pin Dual-in-line package
- 32-pin PLCC package
- 28-pin SOIC package
- Tape and reel
- Commercial:
- Industrial:
2004 Microchip Technology Inc.
256K (32K x 8) Low-Voltage CMOS EPROM
0°C to +70°C
-40°C to +85°C
PACKAGE TYPES
PDIP
PLCC
SOIC
Obsolete Device
A12
NC
V
V
O0
A6
A5
A4
A3
A2
A1
A0
O0
O1
O2
A7
A6
A5
A4
A3
A2
A1
A0
A12
PP
SS
V
V
O0
O1
O2
A7
A6
A5
A4
A3
A2
A1
A0
PP
SS
27LV256
5
6
7
8
9
10
11
12
13
• 1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
28
27
26
25
24
23
22
21
20
19
18
17
16
15
29
28
27
26
25
24
23
22
21
V
A14
A13
A8
A9
A11
OE
A10
CE
O7
O6
O5
O4
O3
CC
A8
A9
A11
NC
OE
A10
CE
O7
O6
V
A14
A13
A8
A9
A11
OE
A10
CE
O7
O6
O5
O4
O3
DS11020H-page 1
CC

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27lv256 Summary of contents

Page 1

... Industrial: -40°C to +85°C DESCRIPTION The Microchip Technology Inc. 27LV256 is a low volt- age (3.0 volt) CMOS EPROM designed for battery powered applications. The device is organized as a 32K x 8 (32K-Byte) non-volatile memory product. The 27LV256 consumes only 8 mA maximum of active cur- rent during a 3 ...

Page 2

... ELECTRICAL CHARACTERISTICS 1.1 Maximum Ratings* V and input voltages w.r.t. V ........ -0.6V to +7.25V voltage w.r.t. V during PP SS programming ......................................... -0.6V to +14V Voltage on A9 w.r.t. V ...................... -0.6V to +13.5V SS Output voltage w.r.t. V ................-0. Storage temperature ..........................-65°C to +150°C Ambient temp. with power applied .....-65°C to +125°C *Notice: Stresses above those listed under “Maximum Ratings” ...

Page 3

... Address valid t CE(2) t OE(2) t ACC - t after the falling edge of CE without impact 27LV256 = 0.45V 2. 0. Tamb = 0°C to +70°C Tamb = -40°C to +85°C Units Conditions Max 300 300 125 ...

Page 4

... TABLE 1-4: PROGRAMMING DC CHARACTERISTICS Parameter Status Input Voltages Logic”1” Logic”0” Input Leakage — Output Voltages Logic”1” Logic”0” V Current, program & verify — Current, program — Product Identification — Note 1: V must be applied simultaneously or before V ...

Page 5

... For Read operations, if the addresses are stable, the address access time ( output (t CE after a delay from the falling edge 27LV256 Verify t AH Data Out Valid OUT OUT High Z High Z ...

Page 6

... Standby Mode The standby mode is defined when the CE pin is high (V ) and a program mode is not defined. Output Dis- IH able 1.4 Output Enable This feature eliminates bus contention in multiple bus microprocessor systems and the outputs high impedance when the following condition is true: • ...

Page 7

... FIGURE 1-3: PROGRAMMING EXPRESS ALGORITHM Conditions 25+/-5C amb V = 6.5+/-0.25V 13.0+/-0.25V PP 2004 Microchip Technology Inc. 27LV256 Start ADDR = First Location 13. Program one 100 s pulse Increment X Verify Pass Byte Fail No Yes Device X = 10? Failed Last Yes Address? No Increment Address 4.5V, 5.5V ...

Page 8

... Product Identification System To order or to obtain information, e.g., on pricing or delivery, please use the listed part numbers, and refer to the factory or the listed sales offices. 27LV256 – Package: Temperature Range: Access Time: Device: DS11020H-page Plastic Leaded Chip Carrier P = Plastic DIP (600 Mil Plastic SOIC (300 Mil) Blank = 0° ...

Page 9

... Use of Microchip’s products as critical components in life support systems is not authorized except with express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any intellectual property rights.  2004 Microchip Technology Inc. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC ...

Page 10

... Via Salvatore Quasimodo, 12 20025 Legnano (MI) Milan, Italy Tel: 39-0331-742611 Fax: 39-0331-466781 Netherlands Waegenburghtplein 4 NL-5152 JR, Drunen, Netherlands Tel: 31-416-690399 Fax: 31-416-690340 United Kingdom 505 Eskdale Road Winnersh Triangle Wokingham Berkshire, England RG41 5TU Tel: 44-118-921-5869 Fax: 44-118-921-5820 07/12/04  2004 Microchip Technology Inc. ...

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