## Technical Overview: 47LPA-1D0YR-R/Q The **47LPA-1D0YR-R/Q** refers to a high-performance **Micro-SD (TransFlash) Connector** manufactured by **Amphenol ICC (FCI)**. This specific part belongs to the 47L series, designed for mobile devices, IoT hardware, and compact consumer electronics. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Component Type** | Micro-SD Card Connector | | **Mounting Type** | Surface Mount (SMT) | | **Orientation** | Right Angle | | **Card Detection** | With Switch (Normally Open) | | **Ejection Mechanism** | Push-Pull | | **Number of Contacts** | 8 Pins + 2 Shell/Switch Pins | | **Current Rating** | 0.5A per pin | | **Voltage Rating** | 100V AC/DC | --- ### 2. Physical Characteristics * **Low Profile (LPA):** The "LPA" designation stands for "Low Profile A," indicating a height usually around **1.25mm to 1.50mm**. This is critical for thin devices like smartphones or tablets. * **Contact Material:** High-conductivity copper alloy with **Gold (Au) plating** on the contact area to prevent oxidation and ensure data integrity over thousands of cycles. * **Housing:** High-temperature thermoplastic (LCP - Liquid Crystal Polymer) capable of withstanding lead-free reflow soldering temperatures. --- ### 3. Pinout and Signal Map While the exact internal routing depends on the PCB layout, the standard Micro-SD interface for this connector follows this logical map: 1. **DAT2**: Data Line 2 2. **CD/DAT3**: Card Detect / Data Line 3 3. **CMD**: Command/Response 4. **VDD**: Supply Voltage (2.7V - 3.6V) 5. **CLK**: Clock 6. **VSS**: Ground 7. **DAT0**: Data Line 0 8. **DAT1**: Data Line 1 * **Switch Pins**: Used to detect the physical presence of the card. --- ### 4. Implementation Details ```cpp // Example: Logic for Card Detection using the 47LPA internal switch const int cardDetectPin = 7; // Connected to the connector switch void setup() { pinMode(cardDetectPin, INPUT_PULLUP); Serial.begin(9600); } void loop() { bool cardInserted = (digitalRead(cardDetectPin) == LOW); if (cardInserted) { // Initialize SD card communication } } ``` --- ### 5. Common Applications * **Mobile Handsets:** Due to its extremely low height. * **Wearables:** Smartwatches and fitness trackers. * **Embedded Systems:** Industrial gateways and data loggers. * **Dash Cams:** High-vibration environments requiring secure card seating.