R5F52306ADFM#30 - RXv2 32-bit MCU 256KB Flash | Renesas
MPN: R5F52306ADFM#30 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.2 | $7.20 |
| 10 | $6.48 | $64.80 |
| 100 | $5.76 | $576.00 |
| 500 | $5.18 | $2,590.00 |
| 1,000 | $4.61 | $4,610.00 |
R5F52306ADFM#30 Overview
A microcontroller (MCU) is an integrated circuit that combines a CPU core, program and data memory, and a set of peripherals in a single chip. The RX family belongs to the broader category of 32-bit embedded microcontrollers in the power management and embedded computing domain, positioned between 16-bit MCUs (such as the PIC24 or RL78 families) and 64-bit application processors. The RXv2 core supersedes the original RX core with enhanced DSP and FPU throughput, and the RX230 sub-family emphasizes ultra-low power consumption alongside USB 2.0 Full-Speed host/function/OTG, CAN, SD host interface, serial sound interface, and a capacitive touch sensing unit.
Key features of the R5F52306ADFM#30 include 256 KB flash (256K x 8), 32 KB SRAM, integrated capacitive touch sensing, hardware AES and TRNG security options, and a rich peripheral set spanning multiple SCI, I2C, SPI, RSPI, and CAN channels. The RXv2 core implements Harvard cache, single-cycle MAC, and a single-precision FPU, allowing efficient digital signal processing without an external DSP. Low-power modes include deep standby and several software-controlled sleep states that draw microamps, enabling coin-cell or energy-harvest powered designs.
In terms of architecture, the RX230 is implemented in a 40 nm-class low-leakage CMOS process and pairs the RXv2 core with dedicated low-power peripherals and an interrupt controller (ICU) supporting NMI and 16 priority levels. The chip supports JTAG and FINE debug interfaces for in-circuit emulation, and the flash memory is programmable via the onboard SCI bootloader.
Typical applications for the R5F52306ADFM#30 include human-machine interface (HMI) panels with capacitive touch, low-power IoT sensor nodes, USB peripherals (HID, CDC, vendor classes), battery-powered industrial sensors, building automation controllers, and small motor control subsystems. The integrated touch sensing unit and USB 2.0 FS OTG make it especially well suited for connected appliances, white goods, and consumer electronics.
When designing with the RX230, allow sufficient decoupling (100 nF + bulk) on each VCC/VSS pair and follow the Renesas RX230 hardware manual layout for the analog AVCC rail when using the ADC. Take care to respect the flash programming voltage ramp timing and the recommended thermal profile (peak 260 C) during reflow to avoid internal flash stress.
This page synthesizes distributor pricing, same-family Renesas drop-in alternatives, and application guidance beyond what is included in the manufacturer's datasheet, helping engineers shorten the BOM selection cycle.
Drop-in alternatives for R5F52306ADFM#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:
R5F52306ADFM
✅ Drop-In📋 Reference alternative (not in catalog)
R5F52305ADFM
✅ Drop-In📋 Reference alternative (not in catalog)
R5F52306ADFM#10
✅ Drop-In📋 Reference alternative (not in catalog)
R5F52318ADFM
✅ Drop-In📋 Reference alternative (not in catalog)
R5F52315ADFM
✅ Drop-In📋 Reference alternative (not in catalog)
R5F52306ADFM#30 Maximum Ratings & Electrical Characteristics
| Manufacturer | Renesas Electronics |
| Series | RX230 (RXv2 core) |
| Core Architecture | RXv2 32-bit with FPU and DSP |
| Core Size | 32-Bit |
| Maximum CPU Frequency | 54 MHz |
| DMIPS Performance | 88.56 DMIPS |
| FPU | Yes, single-precision |
| DSP | Yes (RXv2 single-cycle MAC) |
| Program Memory (Flash) | 256 KB (256K x 8) |
| RAM | 32 KB |
| Package | 64-LFQFP (10x10 mm) |
| Operating Temperature | -40 C to +85 C |
| USB | USB 2.0 Full-Speed Host/Function/OTG |
| CAN | Yes |
| SD Host Interface | Yes |
| Serial Sound Interface | Yes |
| Capacitive Touch Sensing Unit | Yes (CTSU) |
| Mounting Type | Surface Mount |
| RoHS | Compliant |
R5F52306ADFM#30 64-lfqfp (10x10 mm) Pin Configuration Guide
Pin configuration for R5F52306ADFM#30 (64-lfqfp (10x10 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 R5F52306ADFM#30.
Refer to the datasheet for full pin configuration.
Typical Applications
R5F52306ADFM#30 is suitable for 6 applications: Capacitive Touch HMI Panels, USB Peripherals (HID/CDC/Vendor), Battery-Powered IoT Sensor Nodes, Building Automation Controllers, White Goods and Appliance Control, Industrial Sensor Hubs with SD Logging.
Capacitive Touch HMI Panels
The R5F52306ADFM#30 is well suited for capacitive-touch human-machine interface panels because it integrates the Renesas CTSU (Capacitive Touch Sensing Unit) that supports self- and mutual-capacitance electrodes with hardware-driven scanning, freeing the CPU from bit-banging. The RXv2 core's 88.56 DMIPS and 54 MHz clock handle parallel TFT or segment LCD updates while the touch scan runs in hardware, keeping latency under a few milliseconds for up to 32 electrodes. The 32 KB SRAM is large enough to buffer a full frame and a small graphics library, while the 256 KB flash stores fonts, icons, and the touch firmware. The 64-LFQFP package exposes enough GPIO to drive 4.3-inch RGB or segment-multiplexed displays alongside touch electrodes without muxing trade-offs.
Recommended
USB Peripherals (HID/CDC/Vendor)
The R5F52306ADFM#30's integrated USB 2.0 Full-Speed host/function/OTG controller enables designers to build USB keyboards, mice, CDC virtual COM ports, and vendor-class devices without an external PHY. The RXv2 core's 54 MHz throughput is sufficient for HID class firmware and basic vendor-class protocols, while the 32 KB SRAM comfortably buffers USB endpoint descriptors plus application data. The 64-LFQFP exposes D+/D- pins directly, eliminating external series resistors and ESD protection beyond a typical TVS array. Renote's USB stack (USBX) ships with source code, accelerating CDC/HID class certification.
Recommended
Battery-Powered IoT Sensor Nodes
For battery-powered wireless or wired IoT sensor nodes, the R5F52306ADFM#30 benefits from RX230's deep-standby current and the core's ability to wake on touch, RTC, or external interrupts while consuming microamps. The integrated CTSU allows wake-on-touch from a coin-cell powered door sensor or appliance button, while 256 KB flash supports TLS stacks (mbedTLS or wolfSSL) for secure uplink. The 88.56 DMIPS throughput enables on-device filtering of accelerometer or environmental sensor streams before transmitting over UART/I2C, and the 64-LFQFP's 10x10 mm footprint fits inside a CR2032 battery-powered enclosure.
Recommended
Building Automation Controllers
Building automation controllers demand RS-485, CAN, and wireless coexistence plus low standby power, all of which the R5F52306ADFM#30 supports. Its on-chip CAN 2.0B module talks to HVAC and elevator subsystems, while the multiple SCI (UART) channels drive RS-485 modbus nodes, and the I2C bus interfaces to environmental sensors. The integrated CTSU enables glass-front touch panels for thermostat keypads without extra ICs. The 64-LFQFP package provides enough GPIO for relay drivers, triac outputs, and rotary encoder inputs used in dimmers and blind controllers.
Recommended
White Goods and Appliance Control
Washing machines, dishwashers, and induction cooktops benefit from the R5F52306ADFM#30's mix of timers, ADC, and motor-control-friendly peripherals. The RXv2 core's DSP capability allows sensorless control loops for BLDC pumps or fans, while the capacitive touch CTSU replaces mechanical buttons for modern front-panel UI. The 256 KB flash stores menu localization tables, sensor calibration curves, and safety diagnostics, and the 32 KB SRAM is ample for transient algorithm state. Industrial -40 to +85 C rating ensures tolerance to under-cabinet heat and motor-drive EMI environments.
Recommended
Industrial Sensor Hubs with SD Logging
Data-acquisition gateways stream serial sensors to SD cards via the R5F52306ADFM#30's SD host interface, while CAN and USB feed simultaneously to a host PC. The integrated CTSU and serial sound interface enable local alarms or audio cues without an extra CODEC. The 256 KB flash hosts a lightweight file system (FatFs) and protocol stacks, with 32 KB SRAM buffering between DMA, USB, and SD transfers. The 64-LFQFP gives the board enough I/O for status LEDs, buttons, and a small TFT or segment display in the same industrial -40 to +85 C envelope.
Recommended
Recommended Products Summary
Engineering reference data for R5F52306ADFM#30 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | R5F52306ADFM | R5F52305ADFM | R5F52306ADFM#10 | R5F52318ADFM | R5F52315ADFM |
|---|---|---|---|---|---|---|
| Package | 64-LFQFP (10x10) | 64-LFQFP (10x10) - same | 64-LFQFP (10x10) - same | 64-LFQFP (10x10) - same | 64-LFQFP (10x10) - same | 64-LFQFP (10x10) - same |
| Brand | Renesas Electronics | Renesas Electronics - same | Renesas Electronics - same | Renesas Electronics - same | Renesas Electronics - same | Renesas Electronics - same |
| Core | RXv2 32-bit | RXv2 32-bit - same | RXv2 32-bit - same | RXv2 32-bit - same | RXv2 32-bit - same | RXv2 32-bit - same |
| Max Frequency | 54 MHz | 54 MHz - same | 54 MHz - same | 54 MHz - same | 54 MHz - same | 54 MHz - same |
| Flash | 256 KB | 256 KB - same | 256 KB - same | 256 KB - same | 512 KB (+100%) | 384 KB (+50%) |
| SRAM | 32 KB | 32 KB - same | 32 KB - same | 32 KB - same | 64 KB (+100%) | 48 KB (+50%) |
| USB FS OTG | Yes | Yes - same | Yes - same | Yes - same | Yes - same | Yes - same |
| Capacitive Touch (CTSU) | Yes | Yes - same | Yes - same | Yes - same | Yes - same | Yes - same |
| Operating Temperature | -40 to +85 C | -40 to +85 C - same | -40 to +85 C - same | -40 to +85 C - same | -40 to +85 C - same | -40 to +85 C - same |
| Packing Code | #30 (reel) | tray | tray | #10 (tray) | tray | tray |
Key Differentiators
- Integrated capacitive touch sensing with hardware CTSU (vs R5F52305ADFM)
- Lower flash density reduces cost (vs R5F52318ADFM)
- Reel-pack #30 simplifies SMT line integration (vs R5F52306ADFM (tray pack))
Design Notes
Decouple each VCC/VSS pair with a 100 nF X7R ceramic placed within 3 mm of the pin, plus a single 4.7 uF bulk cap on the main VCC rail. The RX230 USB transceiver is sensitive to VCC ripple: add a ferrite bead + 10 uF cap on the USB analog supply domain to avoid dropped USB packets in noisy environments. Refer to the Renesas RX230 hardware manual figure for the recommended analog AVCC filter network.
At 54 MHz continuous operation the LFQFP-64's typical power consumption is well under 100 mW, so no heatsink is required. However, designers should respect the LFQFP-64 reflow profile of peak 260 C for no more than 20 s; exceeding this can stress the flash memory cells. Ensure adequate bottom-side thermal copper (at least 1 square inch) for designs that disable low-power modes.
Route the USB D+/D- pair as a 90-ohm differential with length matching within 2 mm, and keep them away from switching nodes (motor drivers, DC-DC). Place the crystal within 5 mm of the XTAL pins with short, symmetric traces and a guard ground ring. The CTSU touch electrodes should be routed on the opposite PCB layer from the analog AVCC traces to avoid capacitive coupling.
Do not omit the MD (mode) pin pull-up/down configuration - the boot mode (single-chip / SCI boot) is selected at reset by the MD pin level and is not recoverable without a power cycle. The internal flash programming voltage must ramp per the Renesas hardware manual; writing below 2.7 V VCC can corrupt sectors. Always call R_WDT_Refresh or equivalent periodically to avoid inadvertent watchdog reset in CTSU wake-on-touch designs.
Compliance Information
RoHS compliant per Renesas product page. Industrial -40 to +85 C grade; not AEC-Q100 qualified - choose a different part for automotive.
