Key Features

• Non-volatile storage of 8 kbits organized as 8 blocks of 128 bytes each.
• I2C-bus interface logic.
• Compatible with 24C08 serial EEPROM and alternate source of Atmel AT24RF08C without the RF interface.
• Write operations include byte write mode and 16-byte page write mode.
• Read operations include sequential read and random read.
• Programmable access protection to limit reads and writes.
• Lock/unlock function and write protect feature.
• Self-timed write cycle and internal power-on reset.
• High reliability with ten years non-volatile data retention time and 100,000 write cycle endurance.
• Low power CMOS technology with operating power supply voltage range of 2.5 V to 3.6 V.
• ESD protection exceeds industry standards.

Ordering Information

Block Diagram

The PCA24S08AD consists of I2C-BUS CONTROL LOGIC, EEPROM 8 PAGES (8 × 128 BYTES EACH), ACCESS PROTECTION, IDENTIFICATION NUMBER, ADDRESS POINTER, BYTE LATCH (8 BYTES), BYTE COUNTER, INPUT FILTER, SDA, SCL, POWER-ON RESET SEQUENCER, EE CONTROL, and TIMER (÷ 16) and OSCILLATOR DIVIDER (÷ 128).

Pinning Information

• SO8 Package: The PCA24S08AD in SO8 package has 8 pins with specific pin configurations as detailed in the datasheet.
• TSSOP8 Package: The PCA24S08AD in TSSOP8 package also has 8 pins with configurations as detailed in the datasheet.

Functional Description

The PCA24S08AD operates with a 2.5 V supply and features a self-timed write cycle, internal power-on reset, and programmable access protection. It is designed for compatibility with standard 24C08 serial EEPROM devices, with exceptions noted in the datasheet.

EEPROM Memory Specifications

• Data retention at operating temperature: 10 years (minimum).
• Endurance per byte: 100,000 cycles (minimum).

Package Outline

• SO8 (SOT96-1): Plastic small outline package with 8 leads and a body width of 3.9 mm.
• TSSOP8 (SOT505-1): Plastic thin shrink small outline package with 8 leads and a body width of 3 mm.