4 Mbit (512Kb x 8) UV EPROM and OTP EPROM The M27C4001-70F6 is a 4 Mbit (512Kb x8) UV EPROM (Erasable Programmable Read-Only Memory) manufactured by STMicroelectronics. Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Memory Size:** 4 Mbit (512Kb x8)
- **Organization:** 524,288 words x 8 bits
- **Access Time:** 70 ns
- **Supply Voltage:** 5V ± 10%
- **Operating Temperature Range:**
- Commercial (0°C to +70°C)
- Industrial (-40°C to +85°C) (varies by variant)
- **Package:** 32-lead PLCC (Plastic Leaded Chip Carrier) or 32-pin PDIP (Plastic Dual In-line Package)
- **Technology:** UV erasable, electrically programmable
- **Programming Voltage (VPP):** 12.5V
- **Standby Current:** 100 µA (max)
- **Active Current:** 30 mA (max)
### **Descriptions:**
- The M27C4001-70F6 is a non-volatile memory device that can be erased by exposure to ultraviolet light and reprogrammed electrically.
- It is designed for applications requiring high-density, reliable, and reprogrammable memory storage.
- The device supports standard EPROM read and programming operations.
### **Features:**
- **High-Speed Performance:** 70 ns access time.
- **Low Power Consumption:** CMOS technology for reduced power usage.
- **Reliable Erasure:** UV window allows full erasure in 15–20 minutes under UV light.
- **Compatibility:** TTL-compatible inputs and outputs.
- **Programming Options:** Supports fast programming algorithms.
- **Data Retention:** Guaranteed data retention for 10 years.
This information is based on the manufacturer's datasheet for the M27C4001-70F6.
