Technical Summary: M27V201 2 Mbit EPROM

M27V201 2 Mbit EPROM Technical Summary

Overview

The M27V201 is a low-voltage 2 Mbit (256K x 8) EPROM available in two variants: UV-erasable (ultraviolet erase) and OTP (One-Time Programmable). This component is designed for applications requiring non-volatile memory with reliable data retention and fast access times. The M27V201 operates at a low voltage, making it suitable for power-sensitive designs while maintaining compatibility with standard EPROM interfaces.

The device is organized as 256K words of 8 bits each, providing flexible addressing and efficient data storage. Its architecture ensures compatibility with a wide range of microcontrollers and microprocessor systems, making it a versatile choice for embedded systems and legacy applications.

Features

Memory Capacity: 2 Mbit (256K x 8 organization)
Voltage Range: Low-voltage operation (specific range depends on variant)
Access Time: Fast read access times, suitable for high-performance systems
Programming Voltage: Single voltage programming (no additional high voltage required during write operations)
Two Variants Available:
- UV-erasable (ultraviolet light erase)
- OTP (One-Time Programmable) for permanent data storage
Standard EPROM Interface: Compatible with industry-standard control signals
Wide Temperature Range: Operates across industrial temperature ranges
High Reliability: Excellent data retention characteristics
CMOS Technology: Low power consumption compared to NMOS alternatives

Applications

The M27V201 is suitable for a wide range of applications requiring non-volatile memory storage, including:

Embedded Systems: Firmware storage for microcontroller-based designs
Industrial Control Systems: Program storage for PLCs and control units
Automotive Electronics: Engine control units and dashboard systems
Medical Equipment: Critical parameter storage in medical devices
Telecommunications: Configuration data storage in networking equipment
Legacy System Maintenance: Replacement for older EPROM designs
Test and Measurement Equipment: Calibration data and instrument firmware

Electrical Characteristics

Absolute Maximum Ratings

Supply Voltage: -0.3V to +7V
Input Voltage: -0.3V to V_CC + 0.3V
Output Voltage: -0.3V to V_CC + 0.3V
Storage Temperature: -65°C to +150°C
Operating Temperature: -40°C to +85°C (industrial grade)

DC Characteristics

Supply Current (Active): 30 mA max (at 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

AC Characteristics

Address Access Time: 70 ns max
Chip Enable Access Time: 70 ns max
Output Enable Access Time: 30 ns max
Read Cycle Time: 70 ns
Write Pulse Width: 50 ms min (programming)
Programming Time: 100 µs per byte (typical)

Package Information

The M27V201 is available in multiple package options to suit different application requirements:

Standard Packages

PDIP (Plastic Dual In-line Package):
- 32-pin configuration
- 600 mil body width
- Through-hole mounting
- Standard window for UV erasure (UV variant only)
PLCC (Plastic Leaded Chip Carrier):
- 32-lead configuration
- Square format (1.27 mm lead pitch)
- Surface mount package
- JEDEC standard outline
TSOP (Thin Small Outline Package):
- 32-pin configuration
- Thin profile (1.0 mm typical)
- Surface mount package
- Space-saving design

Package Dimensions

PDIP-32:
- Length: 41.91 mm max
- Width: 15.24 mm max
- Height: 4.95 mm max
PLCC-32:
- Body Size: 13.97 mm x 13.97 mm
- Height: 3.68 mm max
- Lead Pitch: 1.27 mm
TSOP-32:
- Body Size: 20.00 mm x 10.16 mm
- Height: 1.20 mm max
- Lead Pitch: 0.80 mm