Technical Summary: M27V800 8 Mbit EPROM

M27V800 8 Mbit EPROM Technical Summary

Overview

The M27V800 is a low-voltage 8 Mbit (1 Megabyte) EPROM (Erasable Programmable Read-Only Memory) available in two variants: UV (Ultra-Violet Erasable) and OTP (One-Time Programmable). This component is designed for applications requiring non-volatile memory with high reliability and endurance. The M27V800 is built using advanced CMOS technology, ensuring low power consumption while maintaining high performance.

This EPROM is organized as 1,048,576 words of 8 bits each, making it suitable for a wide range of embedded systems and microcontroller-based applications. The UV-erasable version allows for multiple reprogramming cycles, while the OTP version is ideal for cost-sensitive, high-volume production where reprogramming is not required.

Features

High-Density Memory: 8 Mbit (1M x 8) organization for flexible system integration.
Low-Voltage Operation: Supports a single power supply voltage of 2.7V to 3.6V, making it suitable for battery-powered applications.
Fast Access Time: Available in speed grades as low as 70 ns, enabling high-performance system designs.
UV-Erasable Option: Allows for multiple erase and reprogram cycles using UV light exposure (typical erase time: 20-30 minutes under UV lamp).
OTP Option: Cost-effective solution for production environments where reprogramming is not required.
CMOS Technology: Low power consumption in both active and standby modes.
Wide Temperature Range: Industrial-grade operation from -40°C to +85°C.
Standard Pinout: Compatible with industry-standard EPROM pin configurations for easy design integration.
Reliable Data Retention: Minimum 10-year data retention period under normal operating conditions.

Applications

The M27V800 is suitable for a wide range of applications across multiple industries:

Embedded Systems: Firmware storage for microcontrollers and DSPs.
Industrial Control: Program storage for PLCs and automation equipment.
Automotive Electronics: Engine control units, instrument clusters, and infotainment systems.
Medical Devices: Program storage for diagnostic and therapeutic equipment.
Consumer Electronics: Firmware storage for smart home devices and appliances.
Telecommunications: Boot code and configuration storage for networking equipment.
Legacy System Support: Replacement for older EPROMs in maintenance and repair scenarios.

Electrical Characteristics

Absolute Maximum Ratings

Supply Voltage (Vcc): -0.6V to +4.6V
Input Voltage: -0.6V to Vcc + 0.6V
Output Voltage: -0.6V to Vcc + 0.6V
Storage Temperature: -65°C to +150°C
Operating Temperature: -40°C to +85°C

DC Characteristics

Supply Current (Active): 20 mA max @ 5 MHz
Supply Current (Standby): 100 µA max
Input Leakage Current: ±1 µA max
Output Leakage Current: ±1 µA max
Input Low Voltage: 0.8V max
Input High Voltage: 2.0V min @ Vcc = 2.7V

AC Characteristics

Address Access Time: 70 ns max (for -70 speed grade)
Chip Enable Access Time: 70 ns max
Output Enable Access Time: 30 ns max
Read Cycle Time: 70 ns min
Write Pulse Width: 100 ns min

Package Information

The M27V800 is available in several industry-standard packages:

PLCC (Plastic Leaded Chip Carrier): 32-lead, 14.0 x 11.4 mm body size
TSOP (Thin Small Outline Package): 32-lead, 8 x 20 mm body size, 1.0 mm pitch
PDIP (Plastic Dual In-line Package): 32-lead, 15.24 mm width, 600 mil spacing

Package Dimensions (PLCC Example)

Body Length: 14.0 mm ±0.2 mm
Body Width: 11.4 mm ±0.2 mm
Lead Pitch: 1.27 mm
Lead Count: 32
Package Height: 4.57 mm max

Programming Specifications

The M27V800 supports standard EPROM programming algorithms:

Programming Voltage (Vpp): 12.5V ±0.5V
Programming Current: 30 mA max per byte
Programming Pulse Width: 50 µs min
Programming Algorithm: Intelligent programming with verification
Programming Endurance: Minimum 100 cycles (UV version)

Erase Characteristics (UV Version)

Erase Method: Exposure to UV light with wavelength of 253.7 nm
Erase Energy: Minimum 15 W-sec/cm²
Typical Erase Time: 20-30 minutes under UV lamp with 12,000 µW/cm² intensity
Window Material: Fused silica with UV transmittance > 60%