{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"R5F1027AANA#25","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"R5F1027AANA~425","canonicalUrl":"https://icboms.com/renesas/R5F1027AANA~425","factsUrl":"https://icboms.com/api/mcp/products/R5F1027AANA%2325","rawCanonicalId":null},"summary":{"shortDescription":"Renesas Electronics RL78/G12 16-bit microcontroller, R5F1027AANA#25, 24 MHz core, 16 KB Flash, 1.5 KB RAM, 2 KB EEPROM, 18 I/O, 24-WFQFN exposed pad, -40°C to +85°C.","salesMarkdown":"## 24-HWQFN package and board-fit The R5F1027AANA#25 comes in a 24-WFQFN exposed pad package (24-HWQFN, 4x4 mm). Without it, junction temperature rises above the -40 to +85 °C ambient operating range under sustained load. The 18 I/O lines break out to the perimeter pads; the centre pad is the ground slug. ## Supply voltage and temperature grade The internal oscillator starts up at 1.8 V, so no external clock source is needed at the low end of the supply range. This covers most factory-floor, HVAC, and outdoor telecom enclosures. The 24 MHz core speed is rated across the full temperature and supply range — no derating required down to 1.8 V at 85 °C. ## On-chip memory and data retention The EEPROM is mapped into a dedicated address space, not emulated in Flash — so writes do not block code execution from the main Flash bank. This matters for applications that log calibration data or fault codes without interrupting the control loop. The 1.5 KB RAM is tight for buffered communication stacks — a full UART frame buffer at 256 bytes leaves about 1 KB for the application heap and stack. The DMA controller offloads peripheral-to-memory transfers, reducing CPU overhead during high-speed data capture. ## Peripheral set and connectivity Serial interfaces include CSI (clocked serial interface, Renesas's name for a 3-wire SPI-compatible bus), I²C, and UART/USART. The 11-channel A/D converter resolves 8 or 10 bits — the 10-bit mode gives 5 mV resolution on a 5 V reference, adequate for most sensor inputs on 18 available I/O lines. On-chip peripherals: DMA, LVD (low-voltage detect for brown-out reset), POR (power-on reset), PWM timer, and WDT. The LVD threshold is programmable, so the part can trigger an interrupt before the supply drops below the operating minimum — useful for saving context to EEPROM on a power-loss event.","metaTitle":"R5F1027AANA#25 MCU, RL78/G12, 16-bit, 24 MHz, 16 KB Flash","metaDescription":"R5F1027AANA#25 Renesas RL78/G12 16-bit MCU. 24 MHz core, 16 KB Flash, 1.5 KB RAM, 2 KB EEPROM, 18 I/O, A/D 11x8/10b. 24-HWQFN package, -40 to +85°C, 1.8-5.5 V.","metaKeywords":null},"attributes":{"series":"RL78/G12","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Speed":"24MHz","Series":"RL78/G12","Package":"Tray","RAM Size":"1.5K x 8","Core Size":"16-Bit","EEPROM Size":"2K x 8","Peripherals":"DMA, LVD, POR, PWM, WDT","Connectivity":"CSI, I²C, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"18","Core Processor":"RL78","Package / Case":"24-WFQFN Exposed Pad","Data Converters":"A/D 11x8/10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Program Memory Size":"16KB (16K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"24-HWQFN (4x4)","Voltage - Supply (Vcc/Vdd)":"1.8V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.88","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.88000","currency":"USD"},{"qty":10,"price":"$1.69100","currency":"USD"},{"qty":25,"price":"$1.59520","currency":"USD"},{"qty":80,"price":"$1.35900","currency":"USD"},{"qty":230,"price":"$1.27600","currency":"USD"},{"qty":490,"price":"$1.11649","currency":"USD"},{"qty":980,"price":"$0.96860","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/6898036b513496028628090cb184763e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source for the R5F1027AANA#25?","answer":"The R5F101GGAFB#30 (RL78/G13) is a 16-bit RL78-core peer with 32 MHz speed, 34 I/O, and a larger LQFP-64 package — it is not pin-compatible with the 24-HWQFN footprint. The R5F104BEGFP#10 (RL78/G14) adds a D/A converter and external oscillator option but comes in a 32-pin LQFP. Neither drops into the same board without a layout change."},{"question":"What compliance documentation is available for the R5F1027AANA#25?","answer":"The part is ROHS3 compliant. Renesas provides the standard RL78/G12 datasheet, application notes, and a user's manual for the peripheral set."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/R5F1027AANA~425","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/R5F1027AANA~425 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}}