R5F51308ADFN#30 - RX130 32-bit 32MHz MCU 512KB Flash | Renesas
MPN: R5F51308ADFN#30 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.85 | $4.85 |
| 10 | $4.42 | $44.20 |
| 100 | $3.95 | $395.00 |
| 500 | $3.55 | $1,775.00 |
| 1,000 | $3.18 | $3,180.00 |
| 3,000 | $2.85 | $8,550.00 |
R5F51308ADFN#30 Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (flash), volatile working memory (RAM), and a wide range of peripheral interfaces such as ADC, timers, communication controllers, and capacitive-touch hardware. The RX130 sits inside the broader Renesas RX family (RX100/RX200/RX600/RX700) and is positioned as the cost-optimized, ultra-low-power entry tier with on-chip touch sensing. LDOs, op-amps, and reset supervisors are typically placed around the RX130 to build a complete power-tree for human-machine interface (HMI), home appliance, and industrial-sensor designs.
Key features include up to 36 channels of capacitive touch sensing with improved noise immunity, sensitivity, and water resistance versus previous RX touch generation, a 12-bit A/D converter, a D/A converter, a real-time clock (RTC), IEC60730 compliance for appliance-safety code libraries, and up to 6 communication channels. The wide 1.8 V to 5.5 V supply range allows direct connection to 5 V sensors and human-machine interface panels without level shifters. An integrated RTC and low-power modes make standby power budgets achievable for battery-operated appliances.
The RXv1 core is paired with single-precision FPU hardware support and tightly-coupled flash that supports zero-wait-state execution at 32 MHz, giving 50 DMIPS performance suitable for user-interface controllers, sensor fusion, and small protocol stacks. The capacitive-touch peripheral runs autonomously from the CPU, leaving the core free for application logic and reducing interrupt load in noisy environments. Hardware IEC60730 class-B support accelerates functional-safety certification for white goods.
Typical applications include home appliance user interfaces with touch keys, industrial control panels, battery-powered sensor nodes, building automation keypads, and small motor-control boards that need ADC plus timer resources on a single 5 V rail. The 80-pin LFQFP exposes ample GPIO for parallel displays, button matrices, and brushless-DC FET drivers.
When designing with the RX130, place the decoupling network as close as possible to the power pins, route touch-sensing traces with guard rings, and confirm IEC60730 firmware libraries are linked when targeting white-goods safety standards. Always validate the touch-sensing threshold with the production PCB stack-up.
This page synthesizes distributor pricing, drop-in alternative analysis, and practical design notes not consolidated in the Renesas datasheet alone.
Drop-in alternatives for R5F51308ADFN#30 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
R5F51308ADFN#10
✅ Drop-In📋 Reference alternative (not in catalog)
R5F51308ADFN#30 Maximum Ratings & Electrical Characteristics
| Product Series | RX130 |
| CPU Core | RXv1 (32-bit) |
| Maximum Clock Frequency | 32 MHz |
| DMIPS | 50 DMIPS |
| Program Flash Memory | 512 KB (512K x 8) |
| SRAM | 48 KB |
| Supply Voltage | 1.8 V to 5.5 V |
| Operating Temperature | -40C to +85C (industrial) |
| Package | 80-LFQFP (12x12 mm) |
| Mounting Type | Surface Mount |
| Capacitive Touch Sensing Channels | Up to 36 |
| ADC | 12-bit A/D converter |
| DAC | Yes (on-chip D/A) |
| RTC | Yes (real-time clock) |
| Communication Channels | Up to 6 |
| IEC60730 Compliance | Yes (class-B support) |
| Lead-Free / RoHS | Yes (compliant per distributor listing) |
R5F51308ADFN#30 80-lfqfp (12x12 mm) Pin Configuration Guide
Pin configuration for R5F51308ADFN#30 (80-lfqfp (12x12 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for R5F51308ADFN#30.
Refer to the datasheet for full pin configuration.
Typical Applications
R5F51308ADFN#30 is suitable for 7 applications: Home Appliance User Interface with Touch Keys, Industrial Control Panel HMI, Battery-Powered Smart Sensor Node, Building Automation Keypad and Thermostat, Small BLDC / Fan Motor Controller, Smart Home Sensor Hub, White Goods IEC60730 Safety Controller.
Home Appliance User Interface with Touch Keys
The R5F51308ADFN#30 is purpose-built for capacitive-touch user interfaces on washing machines, ovens, microwaves, and induction cooktops. Up to 36 capacitive-touch channels with improved noise immunity allow reliable operation behind glass up to 10 mm thick, while water-resistance ensures keys still respond when the surface is wet. The 32 MHz RXv1 core runs the IEC60730 class-B self-test libraries concurrently with UI state machines, and the wide 1.8 V to 5.5 V supply lets designers power the MCU directly from a 5 V rail without an LDO. Compared with discrete touch-IC plus MCU designs, the R5F51308ADFN#30 reduces BOM count and PCB area.
Recommended
Industrial Control Panel HMI
The R5F51308ADFN#30 fits 5 V industrial HMI panels where a 32-bit core, capacitive-touch keys, and a 12-bit ADC must coexist on a single chip. With 50 DMIPS performance, the MCU handles graphical menu rendering, analog sensor reading, and serial protocols (RS-485, UART, I2C) simultaneously. Up to 6 communication channels enable bridging to motor controllers, displays, and remote I/O. The 80-LFQFP exposes ample GPIO for parallel TFT or segment LCDs and for driving status LEDs directly.
Recommended
Battery-Powered Smart Sensor Node
The R5F51308ADFN#30's wide 1.8 V to 5.5 V supply range and on-chip RTC make it ideal for battery-operated sensor nodes running on 2x AA cells. Low-power sleep modes combined with RTC wake-up extend battery life to multi-year levels, while the 32 MHz core wakes fast enough to process sensor data and transmit via UART or I2C before returning to sleep. The integrated 12-bit ADC handles analog sensors such as temperature, humidity, and gas detectors directly.
Recommended
Building Automation Keypad and Thermostat
The R5F51308ADFN#30 supports building automation keypads that combine capacitive-touch sliders with RGB LED feedback and a segment or TFT display. The RX130's 512 KB flash accommodates BACnet or Modbus protocol stacks plus touch and display firmware. With 6 communication channels, the MCU can host RS-485, I2C sensors, and SPI displays in parallel without external bus switches.
Recommended
Small BLDC / Fan Motor Controller
The R5F51308ADFN#30 controls small brushless DC fans and pumps where a 32-bit core, ADC for back-EMF sensing, and PWM timers are required. The 50 DMIPS core runs sensorless commutation algorithms, while the 12-bit ADC samples phase voltages for zero-crossing detection. Up to 6 comm channels enable UART diagnostics plus PWM outputs for the three-phase FET bridge.
Recommended
Smart Home Sensor Hub
The R5F51308ADFN#30 functions as a low-cost hub aggregating multiple I2C and UART sensors behind a single BLE or Wi-Fi companion radio. The MCU's 48 KB SRAM buffers sensor frames while the RXv1 core formats JSON payloads and manages the capacitive-touch front panel for local override. The wide voltage range allows the hub to be powered from a USB 5 V rail or 3.3 V LDO.
Recommended
White Goods IEC60730 Safety Controller
The R5F51308ADFN#30 targets white-goods safety controllers where IEC60730 class-B compliance is mandatory. On-chip self-test hardware plus Renesas-certified firmware libraries run alongside the main application, monitoring the CPU, RAM, flash, clock, and ADC for fault injection. The 80-LFQFP package supports the wide operating temperature range of -40C to +85C required for appliance compartments near heating elements.
Recommended
Recommended Products Summary
Engineering reference data for R5F51308ADFN#30 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | R5F51308ADFN#10 | R5F51308ADFL#30 |
|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 80-LFQFP (12x12 mm) | 80-LFQFP (12x12 mm) - same | 64-LFQFP - different |
| CPU Core | RXv1 (32-bit, 50 DMIPS) | RXv1 (32-bit, 50 DMIPS) | RXv1 (32-bit, 50 DMIPS) |
| Clock Speed | 32 MHz | 32 MHz | 32 MHz |
| Flash Memory | 512 KB | 512 KB | 512 KB |
| SRAM | 48 KB | 48 KB | 48 KB |
| Capacitive Touch Channels | Up to 36 | Up to 36 | Fewer (64-LFQFP pin-limited) |
| Supply Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| IEC60730 Compliance | Yes (class-B) | Yes (class-B) | Yes (class-B) |
Key Differentiators
- Industry-leading 36-channel capacitive-touch hardware (vs STM32G071 (Cortex-M0+ MCU))
- On-chip IEC60730 class-B hardware self-test (vs Generic Cortex-M0+ MCUs without class-B hardware)
- Wide 1.8 V to 5.5 V single-supply operation (vs RX230 (RXv2 core))
Design Notes
Place a 4.7 uF bulk capacitor plus a 0.1 uF ceramic decoupling cap on each VDD/VSS pair of the R5F51308ADFN#30, located within 5 mm of the MCU pins. The wide 1.8 V to 5.5 V supply range allows direct 5 V rail operation, but still requires local decoupling to suppress digital switching noise on the analog supply pins used by the ADC and capacitive-touch peripherals.
Route capacitive-touch traces with a guard ring tied to a quiet GND, keep touch electrodes on a separate PCB layer with no overlapping noisy digital traces, and use hatched copper pour to reduce parasitic capacitance. The R5F51308ADFN#30's improved touch algorithm is more tolerant than legacy RX designs, but proper layout remains essential for water resistance.
Do not skip the IEC60730 class-B firmware library integration when targeting white-goods safety certification - the on-chip self-test hardware requires the linked Renesas library to actually invoke the diagnostic routines. Also, confirm the touch-sensing threshold using the production PCB stack-up rather than an evaluation board, because substrate differences will shift touch sensitivity.
Compliance Information
RoHS and lead-free per Renesas product page and DigiKey listing. IEC60730 class-B compliance is functional-safety oriented; AEC-Q100 is automotive and does not apply. Halogen-free status not stated in the verified web data and marked unknown.
