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X28HC256J-12 from XICOR

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X28HC256J-12

Manufacturer: XICOR, INTERSIL

5 Volt, Byte Alterable E2PROM

Partnumber Manufacturer Quantity Availability
X28HC256J-12,X28HC256J12 XICOR, INTERSIL 10400 In Stock

Description and Introduction

5 Volt, Byte Alterable E2PROM The X28HC256J-12 is a high-speed CMOS EEPROM manufactured by XICOR. Below are its specifications, descriptions, and features based on factual information:  

### **Specifications:**  
- **Memory Size:** 256Kbit (32K x 8)  
- **Technology:** High-Speed CMOS EEPROM  
- **Access Time:** 120ns  
- **Operating Voltage:** 5V ±10%  
- **Operating Temperature Range:**  
  - Commercial: 0°C to +70°C  
  - Industrial: -40°C to +85°C  
- **Package Type:** 28-pin PLCC (Plastic Leaded Chip Carrier)  
- **Endurance:** 100,000 write cycles per byte  
- **Data Retention:** 100 years  
- **Interface:** Parallel  

### **Descriptions:**  
- The X28HC256J-12 is a non-volatile memory device that retains data even when power is removed.  
- It supports fast read and write operations with a 120ns access time.  
- Designed for high-reliability applications with extended endurance and data retention.  

### **Features:**  
- **High-Speed Performance:** 120ns access time for fast read operations.  
- **Low Power Consumption:** CMOS technology ensures efficient power usage.  
- **Byte-Write Capability:** Allows individual byte updates without full sector erasure.  
- **Software Data Protection:** Prevents accidental writes with a controlled write sequence.  
- **Hardware Write Protection:** WP pin enables additional protection against unintended writes.  
- **Automatic Page Write:** Supports 64-byte page write mode for faster programming.  
- **TTL-Compatible Inputs/Outputs:** Ensures compatibility with standard logic levels.  

This information is based solely on the manufacturer's specifications for the X28HC256J-12 EEPROM.

Application Scenarios & Design Considerations

5 Volt, Byte Alterable E2PROM

Alternative Part Number

  • AT28HC256-12JC --: Same 32K x 8 high-speed parallel EEPROM with 120 ns access time in a PLCC package, functionally equivalent and widely available.
  • M28C256-12JC --: Pin-compatible 32K x 8 parallel EEPROM with comparable 120 ns speed and PLCC-32 footprint, suitable as a direct drop-in replacement.
  • SST39SF010A-70-4C-NHE --: Alternative 128K x 8 flash memory in PLCC-32 that can serve as a higher-density substitute when board layout allows, though access time and interface differ slightly.

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