EC24C512B Datasheet, PDF (1/13 Pages) E-CMOS Corporation – 512K bitsTwo-wire Serial EEPROM

EC24C512B
512K bitsTwo-wire Serial EEPROM
General Description
The EC24C512B are EEPROM devices that use
the industrial standard 2-wire interface for
communications. The EC24C512B contains a
memory array of 512K-bits (65,536x8), which is
organized in 128-byte per page. The EEPROM
can operate in a wide voltage range from 1.7V to
5.5V which fits most application. This product can
provide a low-power 2-wire EEPROM solution.
The device is offered in Lead-free, RoHS, halogen
free or Green. The available package types are 8-
pin MSOP . The EC24C512B is compatible with
the industrial standard 2-wire bus protocol. If in
case the bus is not responded, a new sent Op-
code command will reset the bus and the device
will respond correctly. The simple bus consists of
the Serial Clock wire (SCL) and the Serial Data
wire (SDA).
Utilizing such bus protocol, a Master device, such
as a microcontroller, can usually control one or
more Slave devices, alike this EC24C512B. The
bit stream over the SDA line includes a series of
bytes, which identifies a particular Slave device,
an instruction, an address within that Slave
device, and a series of data, if appropriate. The
EC24C512B also has a Write Protect pin (WP) to allow
blocking any write operations over specified memory area.
Under no circumstance, the device will be hung up. In
order to refrain the state machine entering into a wrong
state during power-up sequence or a power toggle off-on
condition, a power on reset circuit is embedded. During
power-up, the device does not respond to any instructions
until the supply voltage (VCC) has reached an acceptable
stable level above the reset threshold voltage. Once VCC
passes the power on reset threshold, the device is reset
and enters into the Standby mode. This would also avoid
any inadvertent Write operations during power-up stage.
During power-down process, the device will enter into
standby mode, once VCC drops below the power on reset
threshold voltage. In addition, the device will be in standby
mode after receiving the Stop command, provided that no
internal write operation is in progress. Nevertheless, it is
illegal to send a command unless the VCC is within its
operating level.
Features
● Two-Wire Serial Interface, I C TM Compatible
– Bi-directional data transfer protocol
● Wide-voltage Operation
– VCC = 1.7V to 5.5V
● Speed: 400 KHz (1.7V) and 1 MHz (2.5V~5.5V)
uA, 1.7V
● Operating current (max.): 2 mA, 1.7V
● Hardware Data Protection
– Write Protect Pin
● Sequential & Random Read Features
● Memory organization: 65,536 x 8 bits
● Page Size: 128 bytes
● Page write mode
– Up to 128 bytes per page write
● Self timed write cycle with auto clear: 5ms (max.)
● Filtered inputs for noise suppression
● High-reliability
– Endurance: 1 million cycles
– Data retention: 100 years
● Industrial temperature grades
● Packages: MSOP 8L
● Lead-free, RoHS, Halogen free, Green
E-CMOS Corp. (www.ecmos.com.tw)
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