EC24C64C Datasheet, PDF (1/17 Pages) E-CMOS Corporation – 64K bits Two-wire Serial EEPROM

EC24C64C
64K bits Two-wire Serial EEPROM
General Description
The EC24C64C is an industrial standard
electrically erasable programmable read
only memory (EEPROM) device that utilizes the
industrial standard 2-wire interface for
communications. The EC24C64C contains a
memory array of 64K bits (8,192x8), which is
organized in 32-byte per page.
The EEPROM operates in a wide voltage range
from 1.7V to 5.5V, which fits most application.
The product provides low-power operations
and low standby current. The device
is offered in Lead-free, RoHS, halogen free or
Green package. The available package types
are 8-pin SOP, TSSOP, DFN, MSOP.
The EC24C64C is compatible to the standard 2-
wire bus protocol. The simple bus consists of
Serial Clock (SCL) and Serial Data (SDA)
signals. Utilizing such bus protocol, a Master
device, such as a microcontroller, can usually
control one or more Slave devices, alike this
EC24C64C.
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
EC24C64C also has a Write Protect
Function via WP pin to cease from overwriting the
data stored inside the memory array.
In order to refrain the state machine from 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.
This product offers an additional page (Identification Page)
of 32 bytes. The Identification Page can be used to store
sensitive application parameters which can be (later)
permanently locked in Read-only mode.
Features
● Two-Wire Serial Interface, I²C^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.): 0.8mA, 5.5V
● Hardware Data Protection
– Write Protect Pin
● Sequential & Random Read Features
● Memory organization: 8,192 x 8 bits
● Page Size: 32 bytes
● Page write mode
– partial page writes allowed
● Addition write lockable page(identification page)
● Self timed write cycle: 5ms (max.)
● Noise immunity on inputs, besides Schmitt trigger
● High-reliability
– Endurance: 1 million cycles
– Data retention: 100 years
● Industrial temperature grades
● Packages: SOP,TSSOP,MSOP,DFN
● Lead-free, RoHS, Halogen free, Green
E-CMOS Corp. (www.ecmos.com.tw)
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