93C56 - 2K-bit Serial EEPROM Technical Summary

Overview

The 93C56 is a 2K-bit (256 x 8 or 128 x 16) serial Electrically Erasable Programmable Read-Only Memory (EEPROM) device designed for applications requiring reliable non-volatile data storage. It operates across a wide voltage range and features a simple serial interface, making it suitable for use in various embedded systems, consumer electronics, and industrial applications. The device supports both 8-bit and 16-bit organization modes, providing flexibility for different system architectures.

The 93C56 is part of a family of serial EEPROMs that offer low-power operation, high endurance, and long data retention. It is compatible with the Microwire serial interface protocol, ensuring easy integration with microcontrollers and other digital systems. The device is available in multiple package options, including PDIP, SOIC, and TSSOP, catering to different PCB layout and space requirements.

Features

• Memory Capacity: 2K-bit organized as 256 x 8 or 128 x 16
• Serial Interface: Microwire-compatible (3-wire)
• Wide Voltage Range: 2.5V to 5.5V operation
• Low Power Consumption: Active current of 1 mA (typical), standby current of 1 µA (typical)
• High Endurance: 1,000,000 write cycles per byte
• Long Data Retention: 100 years at 25°C
• Write Protection: Software and hardware write protection options
• Temperature Range: Industrial (-40°C to +85°C) and extended (-40°C to +125°C) options
• Package Options: PDIP-8, SOIC-8, TSSOP-8

Applications

The 93C56 is widely used in applications requiring compact, non-volatile memory storage with a simple interface. Common applications include:

• Consumer Electronics: TVs, set-top boxes, remote controls, and audio systems for storing configuration data.
• Automotive Systems: Dashboard controls, infotainment systems, and sensor calibration data storage.
• Industrial Control: Programmable logic controllers (PLCs), sensor modules, and calibration data storage.
• Medical Devices: Portable medical equipment for storing patient data and device settings.
• Communication Systems: Routers, modems, and networking equipment for firmware and configuration storage.

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage (V_CC): -0.6V to +6.5V
• Input Voltage (V_IN): -0.6V to V_CC + 0.6V
• Operating Temperature Range: -40°C to +125°C
• Storage Temperature Range: -65°C to +150°C

DC Characteristics

• Supply Current (Read, V_CC = 5V): 1 mA (max)
• Supply Current (Standby): 1 µA (max)
• Input High Voltage (V_IH): 0.7 x V_CC (min)
• Input Low Voltage (V_IL): 0.3 x V_CC (max)

AC Characteristics

• Clock Frequency (f_CLK): 2 MHz (max at 5V)
• Chip Select Setup Time (t_CSS): 250 ns (min)
• Data Setup Time (t_SU): 100 ns (min)
• Data Hold Time (t_H): 100 ns (min)
• Write Cycle Time (t_WC): 5 ms (max)

Package Information

PDIP-8 (Plastic Dual In-line Package)

• Dimensions: 9.81 mm x 6.35 mm body
• Lead Pitch: 2.54 mm
• Lead Count: 8
• Operating Temperature: -40°C to +85°C

SOIC-8 (Small Outline Integrated Circuit)

• Dimensions: 5.00 mm x 4.00 mm body
• Lead Pitch: 1.27 mm
• Lead Count: 8
• Operating Temperature: -40°C to +85°C

TSSOP-8 (Thin Shrink Small Outline Package)

• Dimensions: 3.00 mm x 3.00 mm body
• Lead Pitch: 0.65 mm
• Lead Count: 8
• Operating Temperature: -40°C to +125°C

Conclusion

The 93C56 is a versatile and reliable 2K-bit serial EEPROM suitable for a wide range of applications requiring non-volatile memory storage. Its Microwire-compatible interface, low power consumption, and robust electrical characteristics make it an excellent choice for designers looking for a compact and efficient memory solution. With multiple package options and extended temperature ranges, the 93C56 can meet the demands of both commercial and industrial environments.