EEPROM (Electrically Erasable Programmable Read-Only Memory)
Overview
EEPROM allows data to be electrically erased and reprogrammed without needing ultraviolet light, offering flexibility for in-system updates. It is non-volatile and used widely for storing firmware and configuration settings in embedded systems.
Detailed Explanation
Key Concepts
- Electrically Erasable: Uses electrical charge for erase/program cycles.
- Reprogrammable: Data can be updated in-circuit.Characteristics
- Non-volatile with fast erasure and write cycles.
- Useful for frequently updated systems.
- More expensive per bit than traditional ROM.Applications
- Storing configuration data.
- Firmware storage in embedded systems.
- Consumer electronics that require in-field updates.Examples
- Applications in microcontrollers for saving user settings.Practice Problems
- Compare EEPROM with EPROM in terms of erasure method and reusability.
- Explain how EEPROM can be used to update firmware in an embedded system.
- Design a scenario where EEPROM capacity and write cycles are critical.
References
- Digital Design by Morris Mano
- EEPROM Overview