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