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X28HC64JI-90 from XICOR

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X28HC64JI-90

Manufacturer: XICOR, INTERSIL

5 Volt, Byte Alterable E2PROM

Partnumber Manufacturer Quantity Availability
X28HC64JI-90,X28HC64JI90 XICOR, INTERSIL 4200 In Stock

Description and Introduction

5 Volt, Byte Alterable E2PROM The **X28HC64JI-90** is a high-speed CMOS EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by **Xicor** (now part of Intersil). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Memory Size:** 64 Kbit (8 K x 8 bits)  
- **Access Time:** 90 ns  
- **Operating Voltage:** 5V ±10%  
- **Technology:** High-speed CMOS  
- **Endurance:** 100,000 write cycles (minimum)  
- **Data Retention:** 100 years (minimum)  
- **Package:** 32-pin PLCC (Plastic Leaded Chip Carrier)  
- **Operating Temperature Range:**  
  - Industrial: -40°C to +85°C  

### **Descriptions:**
- The **X28HC64JI-90** is a high-performance EEPROM designed for fast read and write operations.  
- It features a **byte-alterable** architecture, allowing individual bytes to be erased and reprogrammed without requiring a full chip erase.  
- The device is compatible with standard microprocessor interfaces and operates with a single 5V power supply.  

### **Features:**
- **High-Speed Performance:** 90 ns access time for fast read operations.  
- **Low Power Consumption:** CMOS technology ensures low standby and active power.  
- **Hardware & Software Protection:** Includes write protection features to prevent accidental data corruption.  
- **Self-Timed Write Cycle:** Internal circuitry controls programming timing, eliminating the need for external timing components.  
- **JEDEC Standard Pinout:** Ensures compatibility with industry-standard memory sockets.  
- **Reliable Data Retention:** Guaranteed data retention for 100 years.  

This EEPROM is commonly used in embedded systems, industrial controls, telecommunications, and other applications requiring non-volatile memory storage.  

(Note: Xicor was acquired by Intersil, which was later acquired by Renesas Electronics.)

Application Scenarios & Design Considerations

5 Volt, Byte Alterable E2PROM

Alternative Part Number

  • AT28C64B-15JI --: 64Kbit parallel EEPROM in a PLCC-32 package with similar pinout and 5V operation, a common drop-in replacement for the X28HC64 series.
  • M28C64-15J6 --: 64Kbit parallel EEPROM with comparable access time and PLCC-32 footprint, functionally equivalent to the X28HC64JI-90.
  • NM28C64-90J --: 64Kbit parallel EEPROM offering similar speed grade and package compatibility, suitable as an alternative source.
  • AT28C64B-15JU --: 64K (8K x 8) parallel EEPROM in a PLCC-32 package, functionally equivalent to the X28HC64 with similar access time and pinout; widely available and well documented.
  • M28C64-15N6 --: 64K parallel EEPROM with comparable organization and timing, suitable as a drop-in functional replacement for the X28HC64 in most legacy designs.
  • NM28C64Q-90 --: 64K parallel EEPROM offering similar density and 90 ns access speed, matching the original speed grade and usable as a second-source alternative.

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