The Microchip 24LC16BT-I/ST: A Deep Dive into a Versatile 16K Serial EEPROM
In the realm of embedded systems and electronics, reliable non-volatile memory is a fundamental component for storing configuration data, calibration constants, and operational parameters. The Microchip 24LC16BT-I/ST stands as a robust and highly popular solution in this space. This 16 Kbit I²C serial EEPROM memory chip offers a compelling blend of performance, integration ease, and durability, making it a go-to choice for designers across countless applications.
Architecture and Key Specifications
The "16" in its name denotes a 16 Kbit capacity, which translates to a versatile 2048 x 8 (2 Kbyte) memory array. This organized structure allows for efficient storage of hundreds of individual data points. A critical feature of this device is its utilization of the I²C (Inter-Integrated Circuit) serial interface. This two-wire protocol, comprising Serial Data (SDA) and Serial Clock (SCL) lines, drastically reduces the number of I/O pins required on a microcontroller, simplifying board layout and minimizing component count.
The 24LC16BT-I/ST is designed for operation across a broad voltage range (1.7V to 5.5V), ensuring compatibility with both modern low-power microcontrollers and legacy 5V systems. Its low power consumption makes it ideal for battery-powered devices. Furthermore, it is rated for over 1 million erase/write cycles per byte and boasts data retention of over 200 years, guaranteeing long-term reliability for critical data storage.
Advanced Features for Enhanced System Design
Beyond basic storage, this EEPROM integrates several features that enhance system intelligence and robustness. It includes hardware write-protection via a dedicated `WP` (Write Protect) pin. When this pin is tied to VCC, the entire memory array becomes read-only, safeguarding firmware or data from accidental corruption.
The chip also supports page write capability, allowing up to 16 bytes of data to be written in a single operation, significantly improving write efficiency compared to byte-by-byte updates. For systems with multiple memory devices or other I²C peripherals, the 24LC16BT-I/ST offers programmable addressing. Through external pin connections (A0, A1, A2), it can be set to one of eight unique addresses on the I²C bus, enabling up to 16 devices (128 Kbit total) to be connected on the same two-wire bus without address conflicts.
Package and Applications
The "-I/ST" suffix specifies an industrial temperature range (-40°C to +85°C) and a TSSOP surface-mount package. This small form factor is perfect for space-constrained PCB designs. The chip's combination of features makes it ubiquitous in applications such as:
Smart meters and industrial control systems
Automotive electronics for storing trim settings
Consumer electronics like televisions and printers
Medical devices for parameter storage
Networking and communication equipment
ICGOODFIND: The Microchip 24LC16BT-I/ST is a quintessential serial EEPROM that delivers exceptional reliability, a simple I²C interface, and advanced hardware control features. Its balance of capacity, low power, and robust design ensures it remains a premier solution for non-volatile memory needs across diverse industries.
Keywords:
1. I²C Serial EEPROM
2. Non-Volatile Memory
3. Hardware Write-Protection
4. Page Write
5. Low-Power Operation
