## Electronic Specifications: IS25LP256D-RHLA3-TY The **IS25LP256D-RHLA3-TY** is a high-performance 256M-bit (32M-byte) Serial Flash memory manufactured by **ISSI (Integrated Silicon Solution Inc.)**. It belongs to the LP series, designed for low power consumption and high-speed data transfer. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Density** | 256 Megabits (32 Megabytes) | | **Interface** | SPI, Dual SPI, Quad SPI, and QPI | | **Max Clock Frequency** | 133 MHz (up to 532MHz equivalent in Quad SPI) | | **Operating Voltage** | 2.3V to 3.6V | | **Operating Temperature** | -40°C to +125°C (Automotive Grade A3) | | **Package Type** | 24-ball TFBGA (6mm x 8mm) | | **Data Retention** | 20 Years | --- ### 2. Detailed Component Breakdown #### A. Architecture and Speed This chip supports **Multi-I/O protocols**. While the standard SPI uses a single data line, the Quad SPI mode uses four, significantly increasing throughput for "Instant-On" applications. It also supports **DTR (Double Transfer Rate)**, which reads data on both the rising and falling edges of the clock. #### B. The Part Number Decoder Understanding the suffix is critical for hardware design: * **IS25LP**: Product Family (2.3V - 3.6V Serial Flash) * **256D**: 256Mb Density, "D" Revision * **R**: Automotive Temperature Grade / Special Option * **HL**: 24-ball TFBGA package (6x8mm, 5x5 ball grid) * **A3**: Automotive Grade 3 (-40°C to +125°C) * **TY**: Packing type (typically indicates Tray or specialized Tape & Reel variant) #### C. Power Management The device is optimized for battery-powered or heat-sensitive automotive environments: * **Deep Power Down Current:** Typically < 5µA. * **Active Read Current:** ~15mA at 133MHz. --- ### 3. Pinout Configuration (TFBGA-24) For the **HL** package (24-ball TFBGA), the functional pins are typically mapped as follows: | Pin Name | Function | | :--- | :--- | | **CS#** | Chip Select (Active Low) | | **SO (IO1)** | Serial Data Output (or bidirectional IO in Quad mode) | | **WP# (IO2)** | Write Protect (or bidirectional IO in Quad mode) | | **SI (IO0)** | Serial Data Input (or bidirectional IO in Quad mode) | | **SCLK** | Serial Clock | | **HOLD# (IO3)** | Hold input (pauses communication) or IO3 | | **VCC / VSS** | Power Supply / Ground | --- ### 4. Application Areas Due to the **A3 Automotive rating**, this part is commonly used in: * **Infotainment Systems:** Storing OS boot code and graphics. * **ADAS (Advanced Driver Assistance Systems):** Fast loading of sensor processing algorithms. * **Instrument Clusters:** Fast boot times for digital dashboards.