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 (8,192×8), 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.


● Two-Wire Serial Interface, I2CTM 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)

● Standby current (max.): 1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


● Lead-free, RoHS, Halogen free, Green


Pin Configurations

Ordering info