2732

M2732A - 32K (4K x 8) UV Erasable PROM

Overview

The M2732A is a 32,768-bit ultraviolet (UV) erasable and electrically programmable read-only memory (EPROM) organized as 4K words by 8 bits. This non-volatile memory component is designed for applications requiring reliable, high-performance storage with the flexibility of reprogrammability. The device features a transparent quartz window that allows exposure to UV light for erasure, making it suitable for development, prototyping, and low-to-medium volume production environments.

With a standard access time and low power consumption, the M2732A is compatible with a wide range of microprocessors and microcontrollers. Its robust design ensures data retention for extended periods, typically up to 10 years, even under harsh operating conditions.

Key Features

• 32,768-bit memory organization (4,096 x 8)
• UV erasable and electrically programmable for flexible development cycles
• Single +5V power supply for simplified system integration
• Fast access time (typically 200-250ns) for high-performance applications
• Low power consumption:
  • Active current: 100mA (max)
  • Standby current: 40mA (max)
• Tri-state outputs for direct bus connection
• Standard 24-pin DIP package for easy PCB mounting
• High reliability with 10-year data retention
• Industrial temperature range (-40°C to +85°C) for rugged applications

Applications

The M2732A EPROM is suitable for a wide range of applications, including:

• Microcontroller-based system firmware storage
• Industrial control systems
• Automotive electronics
• Medical equipment
• Telecommunications devices
• Legacy system maintenance and upgrades
• Embedded system development and prototyping
• Educational and training systems

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage (V_CC): -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 +125°C
• Operating Temperature: -40°C to +85°C

DC Characteristics (T_A = 25°C, V_CC = 5V ±10%)

• Input High Voltage (V_IH): 2.0V min
• Input Low Voltage (V_IL): 0.8V max
• Output High Voltage (V_OH): 2.4V min (I_OH = -2.0mA)
• Output Low Voltage (V_OL): 0.45V max (I_OL = 2.1mA)
• Supply Current (Active): 100mA max
• Supply Current (Standby): 40mA max

AC Characteristics

• Address Access Time (t_ACC): 200ns (max)
• Chip Enable Access Time (t_CE): 200ns (max)
• Output Enable Access Time (t_OE): 100ns (max)
• Read Cycle Time (t_RC): 250ns (max)
• Write Pulse Width (t_WP): 45ms (min)

Programming Characteristics

• Programming Voltage (V_PP): 21V ±0.5V
• Programming Current (I_PP): 30mA (max)
• Programming Pulse Width: 50ms (max)
• Programming Temperature: 25°C ±5°C
• Number of Programming Cycles: Typically 100 minimum

Package Information

The M2732A is available in a standard 24-pin ceramic dual in-line package (DIP) with a transparent quartz window for UV erasure:

• Package Type: Ceramic DIP (Cerdip)
• Pin Count: 24
• Dimensions: 32.13mm x 13.97mm (1.265" x 0.550")
• Window Dimensions: 12.7mm x 6.35mm (0.5" x 0.25")
• Lead Material: Kovar or Alloy 42
• Lead Finish: Solder-plated or gold-plated options
• Weight: Approximately 3.5 grams

Pin Configuration

• Pin 1: A7 (Address Input 7)
• Pin 2: A6 (Address Input 6)
• Pin 3: A5 (Address Input 5)
• Pin 4: A4 (Address Input 4)
• Pin 5: A3 (Address Input 3)
• Pin 6: A2 (Address Input 2)
• Pin 7: A1 (Address Input 1)
• Pin 8: A0 (Address Input 0)
• Pin 9: Q0 (Data Output 0)
• Pin 10: Q1 (Data Output 1)
• Pin 11: Q2 (Data Output 2)
• Pin 12: GND (Ground)
• Pin 13: Q3 (Data Output 3)
• Pin 14: Q4 (Data Output 4)
• Pin 15: Q5 (Data Output 5)
• Pin 16: Q6 (Data Output 6)
• Pin 17: Q7 (Data Output 7)
• Pin 18: CE (Chip Enable)
• Pin 19: A10 (Address Input 10)
• Pin 20: OE (Output Enable)
• Pin 21: A11 (Address Input 11)
• Pin 22: A9 (Address Input 9)
• Pin 23: A8 (Address Input 8)
• Pin 24: V_CC (Power Supply)

Erase Characteristics

The M2732A requires UV light exposure for complete erasure: