64K X 8 ELECTRICALLY ERASABLE EPROM The W27E512 is a 512K-bit (64K x 8) Electrically Erasable Programmable Read-Only Memory (EEPROM) manufactured by Winbond. Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Organization:** 64K x 8
- **Density:** 512K-bit
- **Supply Voltage:** 5V ±10%
- **Access Time:** 70ns, 90ns, 120ns, 150ns (depending on speed grade)
- **Operating Temperature Range:**
- Commercial (0°C to +70°C)
- Industrial (-40°C to +85°C)
- **Endurance:** 100,000 erase/write cycles
- **Data Retention:** 10 years
- **Package Options:**
- 28-pin PDIP (Plastic Dual In-line Package)
- 28-pin PLCC (Plastic Leaded Chip Carrier)
- 28-pin TSOP (Thin Small Outline Package)
### **Descriptions:**
- The W27E512 is a high-performance, byte-erasable EEPROM with a fast read access time.
- It supports both parallel and page-mode operations for efficient data transfer.
- Features a simple interface with standard control signals (CE#, OE#, WE#).
- Compatible with JEDEC standards for easy integration into existing systems.
### **Features:**
- **Byte Erase & Program:** Allows individual byte modification.
- **Automatic Page Write:** Supports 64-byte page write operations for faster programming.
- **Hardware Data Protection:** Write protection via control pin (WE#) and VCC monitoring.
- **Low Power Consumption:**
- Active current: 30mA (typical)
- Standby current: 100μA (typical)
- **TTL-Compatible Inputs/Outputs:** Ensures compatibility with standard logic levels.
- **Self-Timed Programming Cycle:** Eliminates the need for external timing components.
This information is based on Winbond's official documentation for the W27E512 EEPROM.
