DS28DG02E-3C+

Memory IC Overview

The DS28DG02E-3C+ is a mixed-signal integrated circuit featuring 2Kb (256 x 8) EEPROM, 12 programmable I/O lines, and a real-time clock with calendar. It utilizes an SPI interface operating at up to 2MHz in modes (0,0) and (1,1). The device includes a CPU reset monitor with a factory-set trip point of 3.3V ±5%, a user-programmable battery monitor, and a watchdog timer. It operates within a voltage range of 2.2V to 5.25V and supports temperatures from -40°C to +85°C.

Memory IC Feature Summary

• Integrates non-volatile memory with configurable general-purpose input/output channels for system control.
• Provides precise timekeeping capabilities including calendar functions and alarm generation via external crystal or TCXO.
• Includes hardware monitoring features such as power-fail reset, battery status checking, and watchdog timeout protection.

Memory IC Applications

• Asset-tracking systems
• Broadband access network equipment
• Patient-monitoring systems
• Home lighting control systems

Memory IC Procurement Notes

Verify the specific suffix 'E-3C+' confirms the 3.3V VCC trip point and TSSOP package during procurement. Confirm RoHS compliance status as indicated by the '+' designation. Ensure the source documentation matches the current revision level to account for any potential errata updates affecting electrical characteristics or pin functionality.

Memory IC Selection Notes

Select this component when a single-chip solution combining storage, timing, and GPIO control is required. The fixed 3.3V reset threshold suits systems where this voltage level defines the critical power-fail boundary. Consider the exposed paddle thermal requirements for the TSSOP package if high PIO drive currents are utilized continuously.

Memory IC Part Context

This part belongs to the DS28DG02 family, which offers similar functional blocks but varies in package type and VCC trip points. The 'E' indicates the TSSOP-EP package variant, while other suffixes may denote QFN packages or different voltage thresholds. All variants share the same core architecture and register map.

Memory IC Replacement Considerations

Direct replacements include other DS28DG02 variants with matching VCC trip points and package styles. Verify that alternative parts support the same SPI modes and PIO drive capabilities. Cross-referencing with the manufacturer's official substitution guide is recommended to ensure functional equivalence.