{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ESP32-S2R2","brand":"Espressif Systems","brandSlug":"espressif","productSlug":"ESP32-S2R2","canonicalUrl":"https://icboms.com/espressif/ESP32-S2R2","factsUrl":"https://icboms.com/api/mcp/products/ESP32-S2R2","rawCanonicalId":null},"summary":{"shortDescription":"Espressif Systems ESP32 series WiFi MCU, ESP32-S2R2, 2MB PSRAM, 320KB SRAM, 128KB ROM, 802.11b/g/n 150Mbps 2.4GHz, -97dBm sensitivity, 19.5dBm output, 56-VFQFN exposed pad, -40°C to 85°C.","salesMarkdown":"## 2MB PSRAM + 320KB SRAM memory map The ESP32-S2R2 integrates 2MB PSRAM for heap expansion, 320KB on-chip SRAM for code and data, and 128KB ROM for boot routines — the PSRAM sits on a separate bus, so cache misses do not stall the CPU pipeline. For a WiFi stack with TLS and a small RTOS, the 320KB SRAM holds the active task contexts and network buffers; the PSRAM serves as backing store for large JSON payloads or framebuffers. ## 802.11b/g/n at 2.4GHz — 150Mbps PHY The radio supports 802.11b/g/n on 2.4GHz with a 150Mbps PHY data rate — single-stream HT20/HT40 modes, no MIMO. The 19.5dBm transmit power gives roughly +3dB link margin over typical 16dBm WiFi chips, useful in enclosures with plastic or metal attenuation. Receiver sensitivity is -97dBm at the lowest data rate — this sets the noise floor for the clear-channel assessment threshold in dense AP environments. ## Interface set and supply rail Serial interfaces include USB OTG, SPI, I²C, I²S, UART, PWM, ADC, and GPIO — the USB peripheral handles direct programming and CDC-ACM virtual COM port without an external UART bridge. Supply voltage range is 2.8V to 3.6V on a single rail — the internal LDOs generate the 1.1V core and 1.8V I/O from this input. ## Current consumption profile Receive current draws 63mA to 68mA; transmit current ranges from 160mA at lower power settings to 310mA at 19.5dBm output — the delta is the PA bias current, so a 3.3V rail feeding this chip should budget 350mA peak with 100mV headroom to avoid brownout during WiFi bursts.","metaTitle":"ESP32-S2R2 Espressif WiFi MCU, 2MB PSRAM, 150Mbps","metaDescription":"ESP32-S2R2 active-production WiFi MCU with 2MB PSRAM, 320KB SRAM, 802.11b/g/n at 150Mbps. Industrial temp -40°C to 85°C. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["RF & Wireless ICs"],"specifications":{"Mfr":"Espressif Systems","Series":"ESP32","Package":"Tape & Reel (TR); Cut Tape (CT)","Protocol":"802.11b/g/n","Data Rate":"150Mbps","Frequency":"2.4GHz","Modulation":"-","Memory Size":"2MB PSRAM, 128kB ROM, 320kB SRAM","Sensitivity":"-97dBm","Antenna Type":"Antenna Not Included","Mounting Type":"Surface Mount","Package / Case":"56-VFQFN Exposed Pad","Power - Output":"19.5dBm","Product Status":"Active","lifecycle_stage":"eol_hot","Voltage - Supply":"2.8V ~ 3.6V","Serial Interfaces":"ADC, GPIO, I²C, I²S, SPI, PWM, UART, USB","RF Family/Standard":"WiFi","Utilized IC / Part":"ESP32-S2","Current - Receiving":"63mA ~ 68mA","Operating Temperature":"-40°C~85°C(TA)","Current - Transmitting":"160mA ~ 310mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.5000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/92fe4188fcf3a38854815351cf9ef068.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the memory configuration on ESP32-S2R2?","answer":"The ESP32-S2R2 integrates 2MB PSRAM, 320KB SRAM, and 128KB ROM. The PSRAM is used for heap expansion; the SRAM holds active code and data."},{"question":"What WiFi standards does ESP32-S2R2 support?","answer":"It supports 802.11b/g/n on the 2.4GHz band with a 150Mbps PHY data rate. Transmit power is 19.5dBm; receiver sensitivity is -97dBm."},{"question":"What package does ESP32-S2R2 use?","answer":"It is supplied in a 56-VFQFN exposed pad package, surface-mount."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/espressif/ESP32-S2R2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/espressif/ESP32-S2R2 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}}