The **24VL024/ST** is a specific model of serial Electrically Erasable Programmable Read-Only Memory (EEPROM) manufactured by **Microchip Technology**. It is designed for low-power, low-voltage applications. ### 1. Key Specifications The following table highlights the primary electrical and physical characteristics of the device: | Parameter | Specification | | :--- | :--- | | **Memory Size** | 2 Kbit (256 x 8 bits) | | **Interface** | I²C™ Compatible (2-wire) | | **Voltage Range** | 1.5V to 3.6V | | **Clock Frequency** | 400 kHz (at 1.5V - 3.6V) | | **Package Type** | TSSOP-8 (indicated by "/ST") | | **Operating Temp** | -20°C to +85°C (V-temp range) | | **Write Cycle Time** | 5 ms (Max) | --- ### 2. Functional Features The 24VL024 distinguishes itself from standard 24LC series EEPROMs through its optimized voltage range and specific protection features: * **Low Voltage Operation:** Unlike many EEPROMs that require 2.5V or 5V, this part operates down to **1.5V**, making it ideal for battery-powered handheld devices. * **Hardware Write Protection:** It includes a **WP (Write Protect)** pin. When connected to VCC, all write operations to the memory are inhibited, protecting data from accidental corruption. * **Page Write Buffer:** It supports up to a **16-byte page write**, allowing multiple bytes to be written in a single cycle to increase efficiency. * **Cascadable:** It has three address pins (A0, A1, A2), allowing up to **eight** of these devices to share the same I²C bus. --- ### 3. Pinout Configuration (TSSOP-8) In the `/ST` (TSSOP) package, the pins are typically arranged as follows: | Pin Number | Symbol | Description | | :--- | :--- | :--- | | 1, 2, 3 | A0, A1, A2 | User-configurable Chip Address Inputs | | 4 | Vss | Ground | | 5 | SDA | Serial Data (Bidirectional) | | 6 | SCL | Serial Clock | | 7 | WP | Write-Protect Input | | 8 | Vcc | Power Supply (1.5V - 3.6V) | --- ### 4. Common Applications Due to its small footprint and low voltage requirements, the 24VL024/ST is frequently used in: * **Wearable Electronics:** Storing user settings or calibration data. * **Mobile Handsets:** Storing IMEI, serial numbers, or configuration profiles. * **Battery Management Systems:** Logging battery health data at low voltages. ---