24CS512-I/SN

The 24CS512 provides 512 Kbits of Serial EEPROM, utilizing an I²C (two-wire) serial interface with 3.4 MHz High-Speed mode capability. The device is organized as 65,536 bytes of 8 bits each (64 Kbytes) and is optimized for use in consumer and industrial applications where reliable and dependable nonvolatile memory storage is essential. The 24CS512 allows up to eight devices to share a common I²C (two-wire) bus and is capable of operation across a broad voltage range (1.7V to 5.5V). The 24CS512 features a 2-Kbit Security register, separate from the 512-Kbit memory array. The first half of the Security register is read-only and contains a factory-programmed, ensured unique, 128-bit serial number in the first 16 bytes. The 128-bit serial number is unique across the entire CS series of Serial EEPROM products and eliminates the time-consuming step of performing and ensuring serialization of a product on a manufacturing line. The 128-bit read-only serial number is followed by an additional 1 Kbit (128 bytes) of user-programmable EEPROM. The user-programmable section of the Security register can later be permanently write-protected via a software sequence. The device also contains a Configuration register, which allows the write protection behavior to be configured for legacy hardware write protection or enhanced software write protection which allows the user to protect any of the eight independent 64-Kbit zones. Once the desired configuration is set, the Configuration register can be permanently locked, thereby preventing any further changes to the device operation. For added reliability, the 24CS512 utilizes a built-in Error Correction Code (ECC) scheme. This scheme can correct up to one incorrectly read bit within a four-byte read out. Additionally, the Configuration register includes a read-only ECC State bit (ECS) that is set when ECC is invoked. The 24CS512 supports the I²C Manufacturer Identification (ID) command which will return a unique value for the 24CS512, allowing easy identification within the application.

Key features

• 512-Kbit EEPROM:
• Internally organized as one 65,536 x 8-bit block
• Byte or page writes up to 128 bytes
• Byte or sequential reads within a block
• Self-timed write cycle (5 ms maximum)
• High-Speed I²C Interface:
• High-Speed mode support for 3.4 MHz
• Industry standard: 1 MHz, 400 kHz and 100 kHz
• Output slope control to eliminate ground bounce
• Schmitt Trigger inputs for noise suppression
• Security Register:
• Preprogrammed 128-bit serial number
• User-programmable, lockable 128-byte ID page
• Built-in Error Correction Code (ECC) Logic: ECC Status bit via the Configuration register
• I²C Manufacturer Identification Function Support
• Versatile Data Protection Options:
• Hardware Write-Protect (WP) pin for full array data protection
• Enhanced software write protection via the Configuration register
• Operating Voltage Range of 1.7V to 5.5V
• Low-Power CMOS Technology:
• Write current: 3.0 mA maximum at 5.5V
• Read current: 1.0 mA maximum at 5.5V, 1 MHz
• Standby current: 1 μA at 5.5V (I-Temp.)
• High Reliability:
• More than one million erase/write cycles
• Build-in ECC logic for increased reliability
• Data retention: >200 years
• ESD protection: >4000V
• RoHS Compliant
• Temperature Ranges:
• Industrial (I): -40°C to +85°C
• Extended (E): -40°C to +125°C
• Automotive AEC-Q100 Qualified