PCF85103C-2P/00,11

Memory IC Overview

The PCF85103C-2P/00,11 is a 2 kbit (256 x 8-bit) CMOS Electrically Erasable Programmable Read Only Memory (EEPROM) manufactured by NXP Semiconductors. It features an I2C-bus interface with a fixed hardware address and operates on a single supply voltage ranging from 2.5 V to 6.0 V. The device utilizes an internal redundant storage code for fault tolerance against single bit errors and includes an on-chip voltage multiplier for programming. It supports byte and page write operations, sequential and random reads, and offers high endurance with data retention capabilities.

Memory IC Feature Summary

• Incorporates internal redundant storage code to provide fault tolerance against single bit errors, enhancing reliability compared to conventional EEPROMs.
• Features an on-chip voltage multiplier that generates the necessary programming voltage internally, eliminating the need for external components.
• Includes an internal timer for write cycles and an internal power-on reset circuit to ensure stable operation without external support components.
• Supports standard-speed mode I2C-bus communication with hardware-selectable addressing via A0, A1, and A2 pins.

Memory IC Applications

• Non-volatile data storage in embedded systems requiring fault-tolerant memory solutions.
• I2C-bus based industrial control applications needing reliable parameter storage.
• Consumer electronics utilizing low-power CMOS memory for configuration data.
• Automotive or harsh environment systems benefiting from high ESD protection and latch-up resistance.

Memory IC Procurement Notes

Verify the specific package type DIP8 (SOT97-1) corresponding to the P suffix during procurement. Confirm the manufacturer origin as NXP Semiconductors, formerly Philips, to ensure component authenticity. Check current product status as this series may be subject to obsolescence notices. Ensure compatibility with existing PCB footprints designed for the DIP8 plastic dual in-line package format.

Memory IC Selection Notes

Select this component when a fixed I2C address is required rather than the selectable address found in the PCF85102C-2 variant. Choose this part for designs needing up to eight devices on a single bus alongside PCF85102C-2 units. Consider the DIP8 package if through-hole mounting is preferred over surface mount options. Evaluate the 2.5 V to 6.0 V supply range against system power constraints.

Memory IC Part Context

The PCF85103C-2 belongs to the family of 256 x 8-bit CMOS EEPROMs with I2C-bus interfaces. It is functionally identical to the PCF85102C-2 except for its fixed I2C address, allowing mixed usage on the same bus. The device is pin-compatible with legacy parts such as the PCF8570, PCF8571, PCF8572, PCA8581, and PCF8582, facilitating direct replacements in older designs.

Memory IC Replacement Considerations

Direct pin-compatible substitutes include the PCF85102C-2, though it features a different address scheme. Legacy equivalents like the PCF8570, PCF8571, PCF8572, PCA8581, and PCF8582 are also compatible. Verify that the replacement maintains the fixed address requirement if using the PCF85103C-2 specifically.

Memory IC FAQ

How does the PCF85103C-2 differ from the PCF85102C-2?

The primary difference is the I2C address. The PCF85103C-2 has a fixed hardware address, whereas the PCF85102C-2 has a selectable address. This allows both types to coexist on the same I2C bus.

What is the purpose of the redundant storage code in this EEPROM?

The internal redundant storage code provides fault tolerance to single bit errors, significantly increasing the reliability of the stored data compared to conventional EEPROMs without this feature.

Can multiple PCF85103C-2 devices be used on one I2C bus?

Yes, up to eight PCF85103C-2 devices can be connected to the same I2C bus by connecting the A0, A1, and A2 pins to either VDD or VSS to define unique addresses within the fixed address block.