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PDF LE24L0221 Data sheet ( Hoja de datos )

Número de pieza LE24L0221
Descripción Two Wire Serial Interface EEPROM
Fabricantes Sanyo Semicon Device 
Logotipo Sanyo Semicon Device Logotipo



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Ordering number : ENA1557B
LE24L0221
CMOS IC
Two Wire Serial Interface EEPROM
(2k EEPROM)
Overview
The LE24L0221 is a 2-wire serial interface EEPROM. It realizes high speed and a high level reliability by incorporating
SANYO’s high performance CMOS EEPROM technology. This device is compatible with I2C memory protocol,
therefore it is best suited for application that requires small-scale re-writable nonvolatile parameter memory.
Functions
Capacity: 2k bits (256 × 8 bits)
Single supply voltage: 1.8V to 5.5V
Interface: Two wire serial interface (I2C Bus*)
Operating clock frequency: 400kHz
Low power consumption
: Standby: 2μA (max)
: Active (Read): 0.5mA (max)
Automatic page write mode: 16 Bytes
Read mode: Sequential read and random read
Erase/Write cycles: 105 cycles
Data Retention: 20 years
High reliability: Adopts SANYO’s proprietary symmetric memory array configuration (USP6947325)
Noise filters connected to SCL and SDA pins
Incorporates a feature to prohibit write operations under low voltage conditions.
Package: LE24L0221TT : MSOP8(150mil)
* I2C Bus is a trademark of Philips Corporation.
* This product is licensed from Silicon Storage Technology, Inc. (USA), and manufactured and sold by
SANYO Semiconductor Co., Ltd.
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer's products or
equipment.
40611 SY/10511 SY/91609 SY 20090904-S00001 No.A1557-1/11
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LE24L0221 pdf
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Pin Functions
LE24L0221
SCL (serial clock input) pin
The SCL pin is a serial clock input pin that processes signals at the rising and falling edges of SCL clock signals.
This pin must be pulled up by a resistor to the VDD level and wired-ORed with an open drain (or open collector)
output device for use.
SDA (serial data input/output) pin
The SDA pin is used to transfer serial data to the input/output, and it consists of a signal input pin and n-channel
transistor open drain output pin.
Like the SCL pin, the SDA pin must be pulled up by a resistor to the VDD level and wired-ORed with an open drain
(or open collector) output device for use.
Functional Description
1 Start condition
When the SCL line is at the high level, the start condition is established by changing the SDA line from high to low.
The operation of the EEPROM as a slave starts in the start condition.
2 Stop condition
When the SCL line is at the high level, the stop condition is established by changing the SDA line from low to high.
When the device is set up for the read sequence, the read operation is suspended when the stop condition is received,
and the device is set to standby mode. When it is set up for the write sequence, the capture of the write data is ended
when the stop condition is received, and the EEPROM internal write operation is started.
tSU.STA tHD.STA
tSU.STO
SCL
SDA
Start
condition
Stop
condition
3 Data transfer
Data is transferred by changing the SDA line while the SCL line is low. When the SDA line is changed while the SCL
line is high, the resulting condition will be recognized as the start or stop condition.
tSU.DAT
tHD.DAT
SCL
SDA
No.A1557-5/11
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LE24L0221 arduino
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LE24L0221
SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using
products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition
ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd.
products described or contained herein.
SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all
semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or
malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise
to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt
safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not
limited to protective circuits and error prevention circuits for safe design, redundant design, and structural
design.
In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are
controlled under any of applicable local export control laws and regulations, such products may require the
export license from the authorities concerned in accordance with the above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise,
without the prior written consent of SANYO Semiconductor Co.,Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the
SANYO Semiconductor Co.,Ltd. product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed
for volume production.
Upon using the technical information or products described herein, neither warranty nor license shall be granted
with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third
party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's
intellctual property rights which has resulted from the use of the technical information and products mentioned
above.
This catalog provides information as of April, 2011. Specifications and information herein are subject
to change without notice.
PS No.A1557-11/11
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