{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ESP32-S3R8","brand":"Espressif Systems","brandSlug":"espressif","productSlug":"ESP32-S3R8","canonicalUrl":"https://icboms.com/espressif/ESP32-S3R8","factsUrl":"https://icboms.com/api/mcp/products/ESP32-S3R8","rawCanonicalId":null},"summary":{"shortDescription":"Espressif Systems ESP32-S3 series, TxRx + MCU, ESP32-S3R8, 2.412GHz ~ 2.484GHz, 802.11b/g/n, Bluetooth v5.0, 8MB PSRAM, 21dBm, 56-VFQFN Exposed Pad.","salesMarkdown":"## 56-QFN 7×7 — wireless SoC with integrated memory The ESP32-S3R8 is a 56-VFQFN exposed-pad package (7×7 mm) combining a 2.4 GHz Wi-Fi 4 / BLE 5.0 radio with an MCU core and 8 MB of on-package PSRAM. With 30 GPIOs, the part supports I²C, I²S, SPI, UART, and USB serial interfaces, making it a single-chip anchor for connected products that need local sensor processing and cloud uplink on the same die. ## Active production — no PCN watch needed No second-source or pin-compatible drop-in exists from another vendor in the same 56-QFN footprint — the ESP32-S3 family is the only occupant of this package/feature intersection. ## 21 dBm TX power, -98.4 dBm RX sensitivity — link budget for real walls The radio delivers 21 dBm output power at the antenna port and achieves -98.4 dBm receiver sensitivity. That gives roughly 119 dB of link budget at the 1 Mbps PHY rate — enough to punch through two interior drywall partitions at 30 m range in a typical office environment. The 150 Mbps PHY data rate (802.11n HT20) is shared between the Wi-Fi and BLE stacks; the dual-mode MAC handles time-slicing so a BLE scan does not stall the Wi-Fi TCP stream. For a product streaming sensor data over Wi-Fi while a phone app connects via BLE for commissioning, the radio handles both concurrently without an external co-processor. ## 8 MB PSRAM — headroom for OTA image buffers and ML inference The 8 MB PSRAM is mapped into the CPU address space alongside the internal SRAM, so a firmware image larger than the internal RAM can execute in place from PSRAM with a small latency penalty (one extra wait state per access). A typical OTA update buffer of 1.5 MB leaves 6.5 MB for a TensorFlow Lite Micro model and its scratch buffers. The 3.3 V supply rail is shared with the radio PA — a linear regulator with 200 mV dropout margin is sufficient if the input rail stays above 3.5 V under load.","metaTitle":"ESP32-S3R8 Espressif Systems TxRx + MCU, 8MB PSRAM","metaDescription":"Active Espressif ESP32-S3R8 RF IC: 2.4 GHz Wi-Fi 4 + BLE 5.0, 8MB PSRAM, 21dBm TX, -98.4dBm RX. 56-QFN 7x7. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["RF & Wireless ICs"],"specifications":{"Mfr":"Espressif Systems","GPIO":"30","Type":"TxRx + MCU","Series":"ESP32-S3","Package":"Strip","Protocol":"802.11b/g/n, Bluetooth v5.0","Frequency":"2.412GHz ~ 2.484GHz","Modulation":"-","Memory Size":"8MB PSRAM","Sensitivity":"-98.4dBm","Mounting Type":"Surface Mount","Package / Case":"56-VFQFN Exposed Pad","Power - Output":"21dBm","Product Status":"Active","Data Rate (Max)":"150Mbps","lifecycle_stage":"eol_hot","Voltage - Supply":"3.3V","Serial Interfaces":"I²C, I²S, SPI, UART, USB","RF Family/Standard":"Bluetooth, WiFi","Base Product Number":"ESP32-S3","Current - Receiving":"-","Operating Temperature":"-40°C~85°C","Current - Transmitting":"-","Supplier Device Package":"56-QFN (7x7)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.5100","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/5dcbf950ad6ae8885e3e61b33ecc6271.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to the ESP32-S3R8 in the ESP32-S3 family?","answer":"The ESP32-S3R2 (2 MB PSRAM) and ESP32-S3R8V (8 MB PSRAM, different package variant) share the same core and radio but differ in PSRAM capacity or package. No pin-compatible drop-in from another vendor exists in the 56-QFN footprint."},{"question":"What GPIO count and serial interfaces does the ESP32-S3R8 support?","answer":"The part provides 30 GPIOs and supports I²C, I²S, SPI, UART, and USB serial interfaces."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/espressif/ESP32-S3R8","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/espressif/ESP32-S3R8 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}