Overview
The CAT34C02HU4IGT4A is a 2-Kb I2C EEPROM device manufactured by onsemi. This component is specifically designed for use in DDR2 DIMM Serial Presence Detect (SPD) applications. It features a compact design and is internally organized as 16 pages of 16 bytes each, totaling 256 bytes of 8-bit data. The device supports both Standard (100 kHz) and Fast (400 kHz) I2C protocols, making it versatile for various system requirements.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Memory Size | 2 Kb | |
| Organization | 16 pages of 16 bytes each | |
| I2C Protocol | Standard (100 kHz), Fast (400 kHz) | |
| Supply Voltage Range | 1.7 V to 5.5 V | V |
| Page Write Buffer | 16 bytes | |
| Write Protection | Hardware and Software Write Protection | |
| Program/Erase Cycles | 1,000,000 | |
| Data Retention | 100 years | years |
| Temperature Range | −40°C to +85°C (Industrial), −40°C to +125°C (Extended) | °C |
| Package Types | TSSOP-8, TDFN-8, UDFN-8 |
Key Features
- Supports Standard and Fast I2C Protocol
- 1.7 V to 5.5 V Supply Voltage Range
- 16-byte Page Write Buffer
- Hardware Write Protection for Entire Memory and Software Write Protection for Lower 128 Bytes
- Schmitt Triggers and Noise Suppression Filters on I2C Bus Inputs (SCL and SDA)
- Low power CMOS Technology
- 1,000,000 Program/Erase Cycles and 100 Year Data Retention
- Industrial and Extended Temperature Range
- Pb-free, Halogen Free/BFR Free and RoHS Compliant
Applications
The CAT34C02HU4IGT4A is primarily used in DDR2 DIMM Serial Presence Detect (SPD) applications. It is also backwards compatible with earlier DDR1 SPD applications. Additionally, its versatility in I2C communication makes it suitable for various other applications requiring non-volatile memory, such as industrial control systems, automotive electronics, and consumer electronics.
Q & A
- What is the memory size of the CAT34C02HU4IGT4A?
The CAT34C02HU4IGT4A has a memory size of 2 Kb, organized as 16 pages of 16 bytes each. - What I2C protocols does the CAT34C02HU4IGT4A support?
The device supports both Standard (100 kHz) and Fast (400 kHz) I2C protocols. - What is the supply voltage range for the CAT34C02HU4IGT4A?
The supply voltage range is from 1.7 V to 5.5 V. - How does the write protection work on the CAT34C02HU4IGT4A?
The device features both hardware and software write protection. The WP pin can inhibit all write operations when pulled high, and software write protection can protect the lower 128 bytes of memory. - What is the data retention period of the CAT34C02HU4IGT4A?
The data retention period is 100 years. - How many program/erase cycles does the CAT34C02HU4IGT4A support?
The device supports up to 1,000,000 program/erase cycles. - What are the temperature ranges for the CAT34C02HU4IGT4A?
The device operates in the temperature range of −40°C to +85°C (Industrial) and −40°C to +125°C (Extended). - Is the CAT34C02HU4IGT4A RoHS compliant?
Yes, the CAT34C02HU4IGT4A is Pb-free, Halogen Free/BFR Free and RoHS Compliant. - What package types are available for the CAT34C02HU4IGT4A?
The device is available in TSSOP-8, TDFN-8, and UDFN-8 package types. - How does the power-on reset (POR) feature work?
The power-on reset (POR) circuitry protects the internal logic against powering up in the wrong state. The device powers up into Standby mode after VCC exceeds the POR trigger level and powers down into Reset mode when VCC drops below the POR trigger level.
