M27C160 16 Mbit EPROM

Overview

The M27C160 is a high-performance 16 Megabit (2M x 8) Erasable Programmable Read-Only Memory (EPROM) device designed for applications requiring non-volatile memory storage. This component utilizes advanced CMOS technology to provide fast access times, low power consumption, and high reliability. The M27C160 is ideal for firmware storage in embedded systems, industrial controls, and legacy computing applications.

With a wide operating voltage range and industrial temperature support, the M27C160 is suited for demanding environments. The device features a transparent erase capability using ultraviolet (UV) light, allowing for reprogramming and reuse in development and prototyping scenarios.

Features

• High Capacity: 16 Mbit (2,097,152 x 8) organization.
• Fast Access Time: Ranges from 55 ns to 150 ns depending on the speed grade.
• Low Power Consumption: Active current of 30 mA (typical), standby current of 100 µA (max).
• Wide Voltage Range: Operates at 5V ± 10%.
• UV Erasable: Fully erasable with UV light for reprogramming.
• Industrial Temperature Range: Supports -40°C to +85°C operation.
• CMOS Technology: High noise immunity and low power consumption.
• Tri-State Outputs: Allows for easy bus sharing in multi-device systems.
• JEDEC Standard Pinout: Compatible with industry-standard EPROM sockets.

Applications

The M27C160 is widely used in applications requiring reliable, non-volatile memory storage. Key application areas include:

• Embedded Systems: Firmware storage for microcontrollers and industrial controllers.
• Legacy Computing: BIOS storage in older computer systems.
• Telecommunications: Program storage in networking equipment.
• Automotive Electronics: Code storage in engine control units (ECUs) and infotainment systems.
• Industrial Automation: Programmable logic controllers (PLCs) and robotics.
• Medical Devices: Firmware storage in diagnostic and monitoring equipment.

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage (V_CC): -0.5V to +7.0V
• Input Voltage (V_IN): -0.5V to V_CC + 0.5V
• Output Voltage (V_OUT): -0.5V to V_CC + 0.5V
• Operating Temperature Range: -40°C to +85°C
• Storage Temperature Range: -65°C to +150°C

DC Characteristics

• Supply Current (Active, I_CC): 30 mA (typical) at 5V, 55 ns speed grade.
• Supply Current (Standby, I_SB): 100 µA (max) at 5V.
• Input Leakage Current (I_IN): ±1 µA (max) at 0V ≤ V_IN ≤ V_CC.
• Output Leakage Current (I_OUT): ±1 µA (max) at 0V ≤ V_OUT ≤ V_CC.

AC Characteristics

• Address Access Time (t_AA): 55 ns (max) for 55 ns speed grade.
• Chip Enable Access Time (t_ACE): 55 ns (max) for 55 ns speed grade.
• Output Enable Access Time (t_OE): 30 ns (max).
• Read Cycle Time (t_RC): 55 ns (min) for 55 ns speed grade.

Package Information

The M27C160 is available in a 42-lead Plastic Leaded Chip Carrier (PLCC) package, which is commonly used for EPROM devices due to its compact footprint and ease of handling. Key package details include:

• Package Type: PLCC-42
• Dimensions: 16.51 mm x 16.51 mm body size.
• Lead Pitch: 1.27 mm (50 mil).
• Lead Count: 42 leads (J-lead configuration).
• Material: Molded plastic, UV-transparent window for erasure.

The PLCC package is designed for surface-mount assembly and is compatible with standard PLCC sockets, facilitating easy removal for reprogramming.

Programming and Erasure

The M27C160 supports standard EPROM programming protocols. Key details include:

• Programming Voltage (V_PP): 12.5V (typical).
• Programming Algorithm: Byte-by-byte programming with verification.
• Programming Time: Approximately 100 µs per byte.
• UV Erasure: Requires exposure to UV light (2537 Å wavelength) for 15-30 minutes at a distance of 1 inch from the window.

After erasure, all bits are restored to a logic '1' state, allowing for reprogramming. The device must be removed from the system and placed under a UV eraser for this process.

Conclusion

The M27C160 is a versatile and reliable 16 Mbit EPROM suitable for a wide range of applications requiring non-volatile memory. Its combination of high speed, low power consumption, and industrial-grade robustness makes it an excellent choice for embedded systems, legacy computing, and industrial automation. The UV-erase capability ensures flexibility during development and prototyping, while the PLCC package offers ease of integration and handling.