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X28HC256JI-90 from XICOR

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X28HC256JI-90

Manufacturer: XICOR, INTERSIL

LOW POWER CMOS EEPROM with hi-speed page write capability 256K EEPROM

Partnumber Manufacturer Quantity Availability
X28HC256JI-90,X28HC256JI90 XICOR, INTERSIL 4700 In Stock

Description and Introduction

LOW POWER CMOS EEPROM with hi-speed page write capability 256K EEPROM The **X28HC256JI-90** is a high-speed CMOS **256K (32K x 8) EEPROM** manufactured by **Intersil** (now part of Renesas Electronics). Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Memory Size:** 256Kbit (32K x 8)  
- **Technology:** High-speed CMOS  
- **Access Time:** 90ns  
- **Operating Voltage:** 5V ±10%  
- **Operating Temperature Range:**  
  - Industrial: **-40°C to +85°C**  
- **Package Type:** 32-lead PLCC (Plastic Leaded Chip Carrier)  
- **Endurance:** 100,000 write cycles (minimum)  
- **Data Retention:** 10 years (minimum)  

### **Descriptions:**  
- The **X28HC256JI-90** is a **non-volatile** EEPROM, meaning it retains data even when power is removed.  
- It supports **byte-level read and write operations**, allowing flexible data updates.  
- The **90ns access time** makes it suitable for high-speed applications.  
- It is compatible with **JEDEC standards** for easy integration into existing designs.  

### **Features:**  
- **Low Power Consumption:**  
  - Active current: **30mA (max)**  
  - Standby current: **100μA (max)**  
- **Hardware and Software Data Protection:**  
  - Prevents accidental writes with **write protection circuitry**.  
- **Automatic Page Write Operation:**  
  - Allows **up to 64 bytes** to be written in a single operation.  
- **Self-Timed Write Cycle:**  
  - Eliminates the need for external timing components.  
- **CMOS and TTL Compatible Inputs/Outputs:**  
  - Ensures broad compatibility with different logic levels.  

This EEPROM is commonly used in **industrial, automotive, and embedded systems** requiring reliable non-volatile memory.  

*(Note: Intersil was acquired by Renesas Electronics, but the original datasheet specifications remain valid.)*

Application Scenarios & Design Considerations

LOW POWER CMOS EEPROM with hi-speed page write capability 256K EEPROM

Alternative Part Number

  • AT28HC256-90JI --: Same 32K x 8 high-speed CMOS EEPROM with 90 ns access time in a PLCC package, functionally equivalent to the X28HC256.
  • M28C256-90JI --: Parallel 32K x 8 EEPROM with 90 ns access time and PLCC package, a direct functional replacement for the X28HC256JI-90.
  • NM28C256-90JI --: 32K x 8 parallel EEPROM with 90 ns speed grade and PLCC package, suitable as a drop-in alternative.
  • AT28HC256-90JU --: Same 32K x 8 high-speed parallel EEPROM with 90 ns access time in a PLCC package, functionally equivalent and widely available.
  • M28C256-90K6 --: 256 Kbit parallel EEPROM with 90 ns speed grade and PLCC footprint, pin-compatible replacement for the X28HC256.
  • NM28C256-90PL --: 32K x 8 parallel EEPROM rated at 90 ns in PLCC, suitable drop-in alternative when the Intersil part is unavailable.

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