27C256-20/P Microchip Technology, 27C256-20/P Datasheet

IC OTP 256KBIT 200NS 28DIP

27C256-20/P

Manufacturer Part Number
27C256-20/P
Description
IC OTP 256KBIT 200NS 28DIP
Manufacturer
Microchip Technology
Datasheet

Specifications of 27C256-20/P

Format - Memory
EPROMs
Memory Type
OTP EPROM
Memory Size
256K (32K x 8)
Speed
200ns
Interface
Parallel
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Package / Case
28-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Request inventory verification / Request inventory verification
FEATURES
• 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. 27C256 is a CMOS
256K bit electrically Programmable Read Only Memory
(EPROM). The device is organized as 32K words by 8
bits (32K bytes). Accessing individual bytes from an
address transition or from power-up (chip enable pin
going low) is accomplished in less than 90 ns. This very
high speed device allows the most sophisticated micro-
processors to run at full speed without the need for
WAIT states. CMOS design and processing enables
this part to be used in systems where reduced power
consumption and reliability are requirements.
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.
- 90 ns access time available
- 20 mA Active current
- 100 A Standby current
- 28-pin Dual-in-line package
- 32-pin PLCC Package
- 28-pin SOIC package
- Tape and reel
- Commercial:
- Industrial:
- Automotive:
2004 Microchip Technology Inc.
0°C to +70°C
-40°C to +85°C
-40°C to +125°C
256K (32K x 8) CMOS EPROM
PACKAGE TYPES
PLCC
DIP/SOIC
Obsolete Device
NC
O0
A6
A5
A4
A3
A2
A1
A0
A12
V
V
O0
O1
O2
A7
A6
A5
A4
A3
A2
A1
A0
PP
SS
27C256
5
6
7
8
9
10
11
12
13
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
DS11001N-page 1
29
28
27
26
25
24
23
22
21
V
A14
A13
A8
A9
A11
OE
A10
CE
O7
O6
O5
O4
O3
A8
A9
A11
NC
OE
A10
CE
O7
O6
CC

Related parts for 27C256-20/P

27C256-20/P Summary of contents

Page 1

... Automotive: -40°C to +125°C DESCRIPTION The Microchip Technology Inc. 27C256 is a CMOS 256K bit electrically Programmable Read Only Memory (EPROM). The device is organized as 32K words by 8 bits (32K bytes). Accessing individual bytes from an address transition or from power-up (chip enable pin going low) is accomplished in less than 90 ns ...

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 +14.0V 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 “ ...

Page 3

... TABLE 1-3: READ OPERATION AC CHARACTERISTICS AC Testing Waveform: Output Load: Input Rise and Fall Times Ambient Temperature: 27C256-90* 27C256-10* 27C256-12 27C256-15 27C256-20 Parameter Sym Min Max Address to Output t — 90 ACC Delay CE to Output Delay t — Output Delay t — O OFF High Impedance Output Hold from ...

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 after a delay from the falling edge 27C256 Verify t AH Data Out Valid OUT OUT X High Z X High Z X High Z Identity Code equal to the delay from ACC ). Data is transferred to the output CE ) ...

Page 6

... 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 100 A. 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

... V = 6.5 ±0.25V 13.0 ±0.25V PP ADDR = First Location 13. Program one 100 Increment X Verify Byte Fail Last Address? No Increment Address 4.5V, 5. All Yes bytes Device = original Passed data? 27C256 s pulse Pass Yes Device Failed Yes No Device Failed DS11001N-page 7 ...

Page 8

... Product Identification System To order or to obtain information (e.g., on pricing or delivery), please use listed part numbers, and refer to factory or listed sales offices. 27C256 – /TS Package: Temperature Range: Access Time: Device DS11001N-page Plastic Leaded Chip Carrier P = Plastic DIP (Mil 600 Plastic SOIC (Mil 300) Blank = 0° ...

Page 9

... PICLAB, PICtail, PowerCal, PowerInfo, PowerMate, PowerTool, rfLAB, rfPICDEM, Select Mode, Smart Serial, SmartTel and Total Endurance are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...

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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