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PDF LE24C043 Data sheet ( Hoja de datos )
| Número de pieza | LE24C043 | |
| Descripción | Two Wire Serial Interface EEPROM | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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www.DataSheet.co.kr
Ordering number : ENA1582A
LE24C043
CMOS IC
Two Wire Serial Interface EEPROM
(4k EEPROM)
Overview
The LE24C043 is a 2-wire serial interface 4k Bit 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: 4k bits (256 × 8 bits)
• Single supply voltage: 2.7V 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: 106 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 : MFP8(225mil)
LE24C043M
* 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.
10511 SY/O2109 SY 20091008-S00002 No.1582-1/12
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
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Pin Functions
LE24C043
SCL (serial clock input/output) pin
The SCL pin is a serial clock input pin that processes signals at the rising and falling edges of SCL clock signals.
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.
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.
WP (write protect) pin
When the WP pin is high, write protection is enabled, and writing into the all memory areas is prohibited. When the
pin is low, writing is possible to all memory areas. Read operations can be performed regardless of the WP pin status.
No.1582-5/12
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
www.DataSheet.co.kr
LE24C043
3) Precautions when turning on the power
This product contains a power-on reset circuit for preventing the inadvertent writing of data when the power is
turned on. The following conditions must be met in order to ensure stable operation of this circuit. No data
guarantees are given in the event of an instantaneous power failure during the internal write operation.
Item
Power rise time
Power off time
Power bottom voltage
Symbol
tRISE
tOFF
Vbot
VDD=2.7 to 5.5V
min typ
10
max
100
0.2
unit
ms
ms
V
VDD
tRISE
tOFF
Vbot
0V
Notes:
1) The SDA pin must be set to high and the SCL pin to low or high.
2) Steps must be taken to ensure that the SDA and SCL pins are not placed in a high-impedance state.
A. If it is not possible to satisfy the instruction 1 in Note above, and SDA is set to low during power rise
After the power has stabilized, the SCL and SDA pins must be controlled as shown below, with both pins set to high.
VDD
SCL
tLOW
VDD
SCL
SDA
SDA
tDH tSU.DAT
tSU.DAT
B. If it is not possible to satisfy the instruction 2 in Note above
After the power has stabilized, software reset must be executed.
C. If it is not possible to satisfy the instructions both 1 and 2 in Note above
After the power has stabilized, the steps in A must be executed, then software reset must be executed.
4) Noise filter for the SCL and SDA pins
This product contains a filter circuit for eliminating noise at the SCL and SDA pins. Pulses of 100ns or less are not
recognized because of this function.
5) Function to inhibit writing when supply voltage is low
This product contains a supply voltage monitoring circuit that inhibits inadvertent writing below the guaranteed
operating supply voltage range. The data is protected by ensuring that write operations are not started at voltages
(typ.) of 1.3V and below.
6) Slave address setting
This product does not include a slave address pin, but the information for the slave addresses, S1 and S2, are held
internally. The slave addresses of this product are set to S1=0, and S2=0 when it is shipped. During device
addressing, execute this slave address code after the device code.
No.1582-11/12
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| PDF Descargar | [ Datasheet LE24C043.PDF ] | |
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