25LC256-I/SN Microchip Technology Inc., 25LC256-I/SN Datasheet

25LC256-I/SN

Manufacturer Part Number

25LC256-I/SN

Description

256K, 32K X 8 , 2.5V SER EE IND

Manufacturer

Microchip Technology Inc.

Datasheet

1.25LC256-ISN.pdf (6 pages)

Specifications of 25LC256-I/SN

Capacitance, Input

7 pF

Capacitance, Output

7 pF

Current, Input, Leakage

±1 μA

Current, Operating

2.5 mA (Read), 0.6 mA (Write)

Current, Output, Leakage

±1

Data Retention

>200 yrs.

Density

256K

Interface

SPI Bus

Memory Type

Serial EEPROM

Organization

32768×8

Package Type

SOIC

Temperature, Operating

-40 to +85 °C

Time, Access

50 ns

Time, Address Hold

200

Time, Address Setup

100

Time, Fall

100 ns

Time, Rise

100 ns

Voltage, Esd

>4 kV

Voltage, Input, High

3.5 V

Voltage, Input, Low

0.75 V

Voltage, Output, High

2 V

Voltage, Output, Low

0.2 V

Voltage, Supply

2.5 to 5.5 V

Lead Free Status / Rohs Status

RoHS Compliant part Electrostatic Device

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

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Part Number:

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Manufacturer:

MICROCHIP

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6 600

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Part Number:

25LC256-I/SN

Manufacturer:

MCP

Quantity:

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Company:

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Part Number:

25LC256-I/SN

Manufacturer:

MICROCHIP

Quantity:

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Company:

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Part Number:

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Manufacturer:

MICROCHIP

Quantity:

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Company:

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Part Number:

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Manufacturer:

MICROCHIP/微芯

Quantity:

20 000

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Device Selection Table

Features:

• Max. Clock 10 MHz

• Low-Power CMOS Technology:

• 32,768 x 8-bit Organization

• 64-Byte Page

• Self-Timed Erase and Write Cycles (5 ms max.)

• Block Write Protection:

• Built-In Write Protection:

• Sequential Read

• High Reliability:

• Temperature Ranges Supported:

• Pb-Free and RoHS Compliant

Pin Function Table

* 25XX256 is used in this document as a generic part number for the 25AA256, 25LC256 devices.

- Max. Write Current: 5 mA at 5.5V, 10 MHz

- Read Current: 6 mA at 5.5V, 10 MHz

- Standby Current: 1 μA at 5.5V

- Protect none, 1/4, 1/2 or all of array

- Power-on/off data protection circuitry

- Write enable latch

- Write-protect pin

- Endurance: 1,000,000 erase/write cycles

- Data retention: > 200 years

- ESD protection: > 4000V

- Industrial (I):

- Automotive (E):

Part Number

Name

HOLD

SCK

25LC256

25AA256

Chip Select Input

Serial Data Output

Write-Protect

Ground

Serial Data Input

Serial Clock Input

Hold Input

Supply Voltage

-40°C to +85°C

-40°C to +125°C

2.5-5.5V

1.8-5.5V

256K SPI Bus Serial EEPROM

Function

Range

25AA256/25LC256

Page Size

64 Byte

Description:

The Microchip Technology Inc. 25AA256/25LC256

(25XX256

PROMs. The memory is accessed via a simple Serial

Peripheral Interface (SPI) compatible serial bus. The

bus signals required are a clock input (SCK) plus sep-

arate data in (SI) and data out (SO) lines. Access to the

device is controlled through a Chip Select (CS) input.

Communication to the device can be paused via the

hold pin (HOLD). While the device is paused,

transitions on its inputs will be ignored, with the

exception of Chip Select, allowing the host to service

higher priority interrupts.

The 25XX256 is available in standard packages

including 8-lead PDIP and SOIC, and advanced

packaging including 8-lead DFN and 8-lead TSSOP.

Package Types (not to scale)

Temp. Ranges

I, E

HOLD

) are 256 Kbit Serial Electrically Erasable

DFN

(MF)

Rotated TSSOP

HOLD

SCK

TSSOP

(ST)

P, SN, SM, ST, MF

Packages

PDIP/SOIC

(P, SN, SM)

DS21822F-page 1

HOLD

SCK

HOLD

SCK

Related parts for 25LC256-I/SN

25LC256-I/SN Summary of contents

Page 1

... SS SI Serial Data Input SCK Serial Clock Input HOLD Hold Input V Supply Voltage CC * 25XX256 is used in this document as a generic part number for the 25AA256, 25LC256 devices. © 2007 Microchip Technology Inc. 25AA256/25LC256 Page Size Temp. Ranges 64 Byte Byte I Description: The Microchip Technology Inc. 25AA256/25LC256 ...

Page 2

... ELECTRICAL CHARACTERISTICS (†) Absolute Maximum Ratings V .............................................................................................................................................................................6.5V CC All inputs and outputs w.r.t. V ......................................................................................................... -0. Storage temperature .................................................................................................................................-65°C to 150°C Ambient temperature under bias ...............................................................................................................-40°C to 125°C ESD protection on all pins ..........................................................................................................................................4 kV † NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device ...

Page 3

... WC is complete. 3: This parameter is not tested but ensured by characterization. For endurance estimates in a specific application, please consult the Total Endurance™ Model which can be obtained from Microchip’s web site © 2007 Microchip Technology Inc. 25AA256/25LC256 Industrial (I -40°C to +85°C A Automotive (E -40° ...

Page 4

... TABLE 1-2: AC CHARACTERISTICS (CONTINUED) AC CHARACTERISTICS Param. Sym. Characteristic No HOLD Low to Output HZ High HOLD High to Output HV Valid 20 T Internal Write Cycle WC Time 21 — Endurance Note 1: This parameter is periodically sampled and not 100% tested begins on the rising edge of CS after a valid write sequence and ends when the internal write cycle WC is complete ...

Page 5

... Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed 0.15 mm per side. 3. Dimensioning and tolerancing per ASME Y14.5M. BSC: Basic Dimension. Theoretically exact value shown without tolerances. REF: Reference Dimension, usually without tolerance, for information purposes only. © 2007 Microchip Technology Inc. 25AA256/25LC256 ...

Page 6

... Serial EEPROM, Industrial temp., Tape & Reel, SOIC package 25AA256T-I/ST = 256k-bit, 1.8V Serial EEPROM, Industrial temp., Tape & Reel, TSSOP package 25LC256-I/P = 256k-bit, 2.5V Serial EEPROM, Industrial temp., P-DIP package 25LC256T-E/ST = 256k-bit, 2.5V Serial EEPROM, Extended temp., Tape & Reel, TSSOP package 25LC256XT-I/ST = 256k-bit, 2 ...

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