Microchip Technology 24CW I2C Serial EEPROMs
Microchip Technology 24CW I2C Serial EEPROMs are high-speed, highly-reliable, low-power devices in 16Kb, 32Kb, 64Kb, and 128Kb densities. The 24CW series is optimized for consumer and industrial applications, where reliable nonvolatile memory storage is essential. The 24CW series allows up to eight devices to share a common I2C bus and can operate across a broad voltage range (1.6V to 5.5V).
The 24CW series contains a pair of programmable Configuration Registers that allow certain device behaviors to be modified. These registers are the Write Protection Register and the Hardware Address Register.
The Write Protection Register (WPR) controls the valid address ranges of the EEPROM array that can be written. This allows the user to select the write protection behavior configured for software write protection. The Hardware Address Register (HAR) controls the three hardware slave address bits. These bits determine which device addresses the 24CW Series will Acknowledge. Because the 24CW Series is a 4-pin device, the HAR controls the cascadable feature.
Once the desired software writes protection and hardware slave address bits are set, these Configuration registers can be permanently locked, thereby preventing further changes to the device operation.
The 24CW Serial EEPROM devices are available in 8-Lead SOIC, 8-Lead TSSOP, 8-Pad UDFN, 5-Lead SOT-23, and 4-Ball CSP packages for design flexibility.
Features
- Density Options
- Byte or page writes up to 32-bytes
- Byte or sequential reads within a block
- Self-timed write cycle (5ms maximum)
- High-speed I2C interface
- Industry-standard 1MHz, 400kHz, and 100kHz
- Output slope control to eliminate ground bounce
- Schmitt trigger inputs for noise suppression
- Programmable hardware slave address bits are configurable via the Hardware Address Register (HAR)
- Versatile data protection options with Software Write Protection via the Write Protection Register (WPR)
- High reliability
- More than one million erase/write cycles
- Data retention of >200years
- ESD protection of >4000V
- 1.6V to 5.5V operating voltage range
- Low-power CMOS technology
- 1.0mA maximum write current at 5.5V
- 1.0mA maximum read current at 5.5V, 1MHz
- 1μA standby current at 5.5V
- -40°C to +85°C ambient temperature under bias
- -40°C to +125°C extended temperature range
- Automotive AEC-Q100 qualified
- Package options
- 8-Lead SOIC
- 8-Lead TSSOP
- 8-Pad UDFN
- 5-Lead SOT-23
- 4-Ball CSP (CS0)
- 4-Ball CSP (CS1)
- RoHS compliant
Block Diagram
Package Types (Not To Scale)
Related Development Tools
Microchip Technology Serial Memory I2C Evaluation Kit (DM160237)
Used to demonstrate the functionality of the Microchip I2C Serial EEPROM devices.