27C516

Overview

The M27C516 is a high-performance 512 Kbit (64K x 8) EPROM (Erasable Programmable Read-Only Memory) device from the OTP (One Time Programmable) series. It is designed for applications requiring non-volatile memory storage with high reliability and endurance. The M27C516 operates on a single 5V power supply and features a fast access time, making it suitable for a wide range of embedded systems and microprocessor-based applications. Its OTP nature ensures data integrity once programmed, making it ideal for production environments where firmware or data must remain unchanged.

Features

• Memory Capacity: 512 Kbit organized as 64K x 8 bits.
• Single Supply Voltage: 5V ±10% operation.
• Fast Access Time: Available in various speed grades, typically ranging from 120ns to 200ns.
• Low Power Consumption: Active current of 30mA (typical), standby current of 100μA (typical).
• One Time Programmable (OTP): Data once written cannot be erased, ensuring security and stability.
• CMOS Technology: Provides high noise immunity and low power consumption.
• Tri-State Outputs: Allows for easy interfacing with bus-oriented systems.
• Programming Voltage: Requires 12.75V for programming operations.
• Wide Temperature Range: Commercial (0°C to 70°C) and Industrial (-40°C to 85°C) variants available.
• JEDEC Standard Pinout: Ensures compatibility with industry-standard EPROM sockets and programmers.

Applications

The M27C516 is widely used in applications requiring permanent, non-volatile storage of code or data. Key application areas include:

• Embedded Systems: Firmware storage for microcontrollers and microprocessors.
• Industrial Control Systems: Program storage for PLCs (Programmable Logic Controllers) and automation equipment.
• Consumer Electronics: Code storage in devices such as set-top boxes, gaming consoles, and home appliances.
• Automotive Electronics: Non-volatile memory for engine control units (ECUs) and infotainment systems.
• Medical Devices: Secure storage for critical firmware in diagnostic and therapeutic equipment.
• Legacy Systems: Upgrades or replacements for older EPROM-based systems requiring reliable OTP memory.

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage (V_CC): -0.3V to +7V
• Programming Voltage (V_PP): -0.3V to +13.5V
• Input Voltage (V_IN): -0.3V to V_CC + 0.3V
• Operating Temperature Range: Commercial (0°C to 70°C), Industrial (-40°C to 85°C)
• Storage Temperature Range: -65°C to +150°C

DC Characteristics

• Supply Current (Active): 30mA (typical) at 5V, 5MHz
• Supply Current (Standby): 100μA (typical)
• Input Leakage Current: ±1μA (max)
• Output Leakage Current: ±1μA (max)
• Output High Voltage (V_OH): 2.4V (min) at I_OH = -2.0mA
• Output Low Voltage (V_OL): 0.4V (max) at I_OL = 2.0mA

AC Characteristics

• Access Time (t_ACC): 120ns to 200ns (depending on speed grade)
• Chip Enable to Output Delay (t_CE): 120ns (max) for 150ns speed grade
• Output Enable to Output Delay (t_OE): 70ns (max) for 150ns speed grade
• Chip Enable to Power-Up (t_PU): 0ns (min)
• Chip Disable to Power-Down (t_PD): 0ns (min)

Package Information

The M27C516 is available in multiple industry-standard packages, ensuring compatibility with a wide range of PCB designs and assembly processes.

• PDIP (Plastic Dual In-Line Package): 28-pin, 600mil width, through-hole mounting.
• PLCC (Plastic Leaded Chip Carrier): 32-pin, J-lead, surface-mount package.
• TSOP (Thin Small Outline Package): 28-pin, surface-mount, low-profile design for space-constrained applications.
• CERDIP (Ceramic Dual In-Line Package): 28-pin, ceramic body, through-hole mounting for high-reliability applications.

Pin Configuration (PDIP-28)

• Pin 1 (A₁₅): Address input bit 15
• Pin 2 (A₁₂): Address input bit 12
• Pin 3 (A₇): Address input bit 7
• Pin 4 (A₆): Address input bit 6
• Pin 5 (A₅): Address input bit 5
• Pin 6 (A₄): Address input bit 4
• Pin 7 (A₃): Address input bit 3
• Pin 8 (A₂): Address input bit 2
• Pin 9 (A₁): Address input bit 1
• Pin 10 (A₀): Address input bit 0
• Pin 11 (Q₀): Data output bit 0
• Pin 12 (Q₁): Data output bit 1
• Pin 13 (Q₂): Data output bit 2
• Pin 14 (GND): Ground
• Pin 15 (Q₃): Data output bit 3
• Pin 16 (Q₄): Data output bit 4
• Pin 17 (Q₅): Data output bit 5
• Pin 18 (Q₆): Data output bit 6
• Pin 19 (