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Sanyo Semicon Device |
www.DataSheet.co.kr
Ordering number : ENA1471
LE25LB642CT
Serial SPI EEPROM
(SPI Bus)(64Kbit)
Overview
The LE25LB642CT is a 64Kbit EEPROM that supports serial peripheral interface (SPI). It realizes high speed operation
and high level reliability by incorporating SANYO’s high performance CMOS EEPROM technology. The interface is
compatible with SPI bus protocol, therefore, it is best suited for applications that require small-scale rewritable nonvolatile
parameter memory. Moreover, the LE25LB642CT has a 32 bytes page rewrite function that provides rapid data rewriting.
Features
• Capacity
• Single supply voltage
• Serial interface
• Operating clock frequency
• Low current dissipation
• Page write function
• Rewrite time
• Number of rewrite times
• Data retention period
• High reliability
: 64Kbits (8K×8bits)
: 1.8V to 3.6V
: SPI Mode0, Mode3 supported
: 5MHz (2.5V to 3.6V), 3MHz (1.8V to 3.6V)
: Standby
: 3μA (max.)
: Active (Read) : 1mA (max.)
: Active (Rewrite) : 3mA (max.)
: 32bytes
: 10ms
: 105 times/Page(Page=32Byte)
: 20years
: Adopts SANYO’s proprietary symmetric memory array configuration (USP6947325)
Incorporates a feature to prohibit write operations under low voltage conditions.
* 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.
51309 SY /20090401-S00009 No.NA1471-1/14
Datasheet pdf - http://www.DataSheet4U.net/
www.DataSheet.co.kr
LE25LB642CT
Pin Assignment
Bottom view
1234
8765
Block Diagram
1.52 x 1.02 x 0.35(max)
Pin Descriptions
PIN.1
PIN.2
VDD
HOLD
PIN.3
SCK
PIN.4
SI
PIN.5
PIN.6
VSS
WP
PIN.7
SO
PIN.8
CS
Power supply
Hold
Serial clock
Serial data input
Ground
Write protect
Serial data output
Chip select
ADDRESS
BUFFERS
&
LATCHES
X-
DECODER
EEPROM
Cell Array
Y-DECODER
CONTROL
LOGIC
I/O BUFFERS
&
DATA LATCHES
SERIAL INTERFACE
CS SCK SI SO WP HOLD
Specifications
Absolute Maximum Rating/If an electrical stress exceeding the maximum rating is applied, the device may be damaged.
Parameter
Symbol
Conditions
Ratings
Unit
Storage temperature
-65 to +150
°C
Supply voltage
-0.5 to 4.6
V
DC input voltage
Overshoot voltage (below 20ns)
-0.5 to VDD+0.5
-1.0 to VDD+0.5
V
V
Operating Conditions
Parameter
Operating temperature
Operating supply voltage
Symbol
Conditions
Ratings
-40 to +85
1.8 to 3.6
Unit
°C
V
DC Electrical Characteristics
Parameter
Supply current when reading
Supply current when writing
Symbol
Conditions
min typ max Unit
ICCR
ICCW
CS = 0.1VDD, HOLD = WP = 0.9VDD
SI = 0.1VDD/0.9VDD, SO = Open
Operating frequency = 5MHz, VDD = 3.6V
CS = 0.1VDD, HOLD = WP = 0.9VDD
SI = 0.1VDD/0.9VDD, SO = Open
Operating frequency = 5MHz, VDD = 2.5V
CS = 0.1VDD, HOLD = WP = 0.9VDD
SI = 0.1VDD/0.9VDD, SO = Open
Operating frequency = 3MHz, VDD = 1.8V
VDD = 3.6V., VIN = 0.1VDD/0.9VDD,
tWC=10ms
1 mA
0.5 mA
0.3 mA
3 mA
No.NA1471-2/14
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