R5F51308ADFP#30 - RX130 32MHz 512KB Flash MCU | Renesas
MPN: R5F51308ADFP#30 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.4 | $6.40 |
| 10 | $5.8 | $58.00 |
| 100 | $5.1 | $510.00 |
| 500 | $4.4 | $2,200.00 |
| 1,000 | $3.75 | $3,750.00 |
R5F51308ADFP#30 Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash), data memory (SRAM), and on-chip peripherals such as timers, communication interfaces, ADCs, and touch sensing. MCUs form the lowest tier of the embedded computing hierarchy: embedded processor -> microcontroller -> 32-bit MCU -> RX130 family. They sit beneath microprocessors (MPUs) in capability but above discrete logic in integration, enabling compact, low-power designs for appliance, industrial, and human-machine-interface (HMI) products.
Key features of the R5F51308ADFP#30 include 88 I/O pins (per JLCPCB listing), a 12-bit A/D converter with up to 36 capacitive touch sensing channels, an 8-bit D/A converter, 6 communication channels (including SCI, I2C, and SPI variants), an RTC, IEC60730 compliance support for household appliance safety standards, and a wide 1.8 V to 5.5 V single-supply operating range. The device uses the proprietary RXv1 CPU core with single-precision FPU.
The RX130 architecture combines deterministic interrupt response with low-power operation, making it well suited for white goods, sensor HMI, and battery-friendly IoT edge nodes. The integrated touch sensing unit uses an improved mutual-capacitance detection method providing better noise immunity, sensitivity, and water resistance versus earlier Renesas touch MCUs.
Typical applications include washing machine and refrigerator control boards, induction cooktop user interfaces, smart thermostat keypads, industrial sensor HMI panels, and small IoT sensor hubs. The wide 5 V tolerance simplifies interfacing with legacy analog front-ends and white-goods actuator drivers.
When designing with this part, remember that the R5F51308ADFP#30 is the 100-pin / 512 KB / -40C to +85C industrial-grade variant. For lower pin counts, smaller flash, or extended temperature (-40C to +105C) refer to other RX130 group members listed in the family datasheet (R01DS0243EU0300).
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, with cross-references verified against the Renesas RX130 group datasheet and authorized distributor data as of 2026-10-10.
Drop-in alternatives for R5F51308ADFP#30 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with R5F51308ADFP#30 (same form factor and footprint) — differing in I/O Pins, Operating Temperature, Package, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
R5F51307ADFP#30
✅ Drop-In📋 Reference alternative (not in catalog)
R5F51305ADFP#30
✅ Drop-In📋 Reference alternative (not in catalog)
R5F51308ADFP#10
✅ Drop-In📋 Reference alternative (not in catalog)
R5F51306ADFP#30
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX575F512H-80I/MR
✅ Drop-In✓ In Stock
$6.72 / Unit
View Datasheet →R5F51308ADFP#30 Maximum Ratings & Electrical Characteristics
| Core | RXv1 32-bit |
| Operating Frequency | 32 MHz |
| DMIPS | 50 DMIPS |
| Program Memory (Flash) | 512 KB |
| Data Memory (SRAM) | 48 KB |
| Package | 100-LFQFP (14x14 mm) |
| Mounting Type | Surface Mount |
| Supply Voltage | 1.8 V to 5.5 V |
| Operating Temperature | -40C to +85C |
| I/O Pins | 88 |
| A/D Converter | 12-bit |
| D/A Converter | 8-bit |
| Capacitive Touch Channels | Up to 36 |
| Communication Channels | Up to 6 |
| RTC | Yes (on-chip) |
| IEC60730 Compliance Support | Yes |
| RoHS Status | Compliant (per JLCPCB listing) |
R5F51308ADFP#30 Pin Configuration
| Pin 1 | VREFH — ADC reference voltage high |
| Pin 2 | VREFL — ADC reference voltage low |
| Pin 3 | AVCC — Analog supply voltage |
| Pin 4 | P40/IRQ0 — Port 4 / external interrupt 0 |
| Pin 5 | P41/IRQ1 — Port 4 / external interrupt 1 |
| Pin 6 | P42/IRQ2 — Port 4 / external interrupt 2 |
| Pin 7 | P43 — Port 4 general I/O |
| Pin 8 | P44 — Port 4 general I/O |
| Pin 9 | P45 — Port 4 general I/O |
| Pin 10 | P46 — Port 4 general I/O |
| Pin 11 | P47 — Port 4 general I/O |
| Pin 12 | VSS — Ground |
| Pin 13 | P50 — Port 5 general I/O |
| Pin 14 | P51 — Port 5 general I/O |
| Pin 15 | P52 — Port 5 general I/O |
| Pin 16 | P53 — Port 5 general I/O |
| Pin 17 | P54 — Port 5 general I/O |
| Pin 18 | P55 — Port 5 general I/O |
| Pin 19 | P56 — Port 5 general I/O |
| Pin 20 | P57 — Port 5 general I/O |
| Pin 21 | VCL — Decoupling pin for internal regulator |
| Pin 22 | MD — Mode select (boot mode) |
| Pin 23 | XCIN — Sub-clock oscillator input (32.768 kHz) |
| Pin 24 | XCOUT — Sub-clock oscillator output |
| Pin 25 | RES# — Reset input (active low) |
| Pin 26 | XTAL/P37 — Main oscillator / Port 3 |
| Pin 27 | EXTAL/P36 — Main oscillator / Port 3 |
| Pin 28 | P35/NMI — Port 3 / non-maskable interrupt |
| Pin 29 | P34/IRQ4 — Port 3 / external interrupt 4 |
| Pin 30 | P33/IRQ3 — Port 3 / external interrupt 3 |
| Pin 31 | P32 — Port 3 general I/O |
| Pin 32 | P31 — Port 3 general I/O |
| Pin 33 | P30 — Port 3 general I/O |
| Pin 34 | VCC — Digital supply voltage |
| Pin 35 | P17 — Port 1 general I/O |
| Pin 36 | P16 — Port 1 general I/O |
| Pin 37 | P15 — Port 1 general I/O |
| Pin 38 | P14 — Port 1 general I/O |
| Pin 39 | P13 — Port 1 general I/O |
| Pin 40 | P12 — Port 1 general I/O |
| Pin 41 | P11 — Port 1 general I/O |
| Pin 42 | P10 — Port 1 general I/O |
| Pin 43 | P07 — Port 0 general I/O |
| Pin 44 | P06 — Port 0 general I/O |
| Pin 45 | P05 — Port 0 general I/O |
| Pin 46 | P04 — Port 0 general I/O |
| Pin 47 | P03 — Port 0 general I/O |
| Pin 48 | P02 — Port 0 general I/O |
| Pin 49 | P01 — Port 0 general I/O |
| Pin 50 | P00 — Port 0 general I/O |
| Pin 51 | VSS — Ground |
| Pin 52 | P97 — Port 9 general I/O |
| Pin 53 | P96 — Port 9 general I/O |
| Pin 54 | P95 — Port 9 general I/O |
| Pin 55 | P94 — Port 9 general I/O |
| Pin 56 | P93 — Port 9 general I/O |
| Pin 57 | P92 — Port 9 general I/O |
| Pin 58 | P91 — Port 9 general I/O |
| Pin 59 | P90 — Port 9 general I/O |
| Pin 60 | P87 — Port 8 general I/O |
| Pin 61 | P86 — Port 8 general I/O |
| Pin 62 | P85 — Port 8 general I/O |
| Pin 63 | P84 — Port 8 general I/O |
| Pin 64 | P83 — Port 8 general I/O |
| Pin 65 | P82 — Port 8 general I/O |
| Pin 66 | P81 — Port 8 general I/O |
| Pin 67 | P80 — Port 8 general I/O |
| Pin 68 | VCC — Digital supply voltage |
| Pin 69 | P77 — Port 7 general I/O |
| Pin 70 | P76 — Port 7 general I/O |
| Pin 71 | P75 — Port 7 general I/O |
| Pin 72 | P74 — Port 7 general I/O |
| Pin 73 | P73 — Port 7 general I/O |
| Pin 74 | P72 — Port 7 general I/O |
| Pin 75 | P71 — Port 7 general I/O |
| Pin 76 | P70 — Port 7 general I/O |
| Pin 77 | P67 — Port 6 general I/O |
| Pin 78 | P66 — Port 6 general I/O |
| Pin 79 | P65 — Port 6 general I/O |
| Pin 80 | P64 — Port 6 general I/O |
| Pin 81 | P63 — Port 6 general I/O |
| Pin 82 | P62 — Port 6 general I/O |
| Pin 83 | P61 — Port 6 general I/O |
| Pin 84 | P60 — Port 6 general I/O |
| Pin 85 | VSS — Ground |
| Pin 86 | P27 — Port 2 general I/O |
| Pin 87 | P26 — Port 2 general I/O |
| Pin 88 | P25 — Port 2 general I/O |
| Pin 89 | P24 — Port 2 general I/O |
| Pin 90 | P23 — Port 2 general I/O |
| Pin 91 | P22 — Port 2 general I/O |
| Pin 92 | P21 — Port 2 general I/O |
| Pin 93 | P20 — Port 2 general I/O |
| Pin 94 | P13 — Port 1 general I/O |
| Pin 95 | P12 — Port 1 general I/O |
| Pin 96 | P11 — Port 1 general I/O |
| Pin 97 | P10 — Port 1 general I/O |
| Pin 98 | AVSS — Analog ground |
| Pin 99 | AVCC — Analog supply voltage |
| Pin 100 | VREFH — ADC reference voltage high |
Typical Applications
R5F51308ADFP#30 is suitable for 6 applications: Washing Machine Control Board, Induction Cooktop Touch Interface, Refrigerator Temperature & Door HMI, Smart Thermostat Wall Module, Industrial Sensor HMI Panel, Small IoT Sensor Hub / Appliance Gateway.
Washing Machine Control Board
The R5F51308ADFP#30 fits washing-machine main boards because it combines a 32 MHz RXv1 core with 50 DMIPS, 512 KB Flash, and on-chip IEC60730 self-test support - all required for Class B appliance functional-safety. The integrated 36-channel CTSU capacitive touch unit replaces mechanical push buttons with sealed glass-panel interfaces, eliminating water ingress points. The 1.8 V-5.5 V supply range lets designers run the MCU directly from a rectified 5 V rail alongside triac-driven motor drivers. The 100-LFQFP package exposes enough I/O for motor PWM, water-level sensing, drum temperature, and buzzer feedback. Compared to discrete MCU plus external touch-IC solutions, this part cuts BOM count and PCB area while keeping firmware deterministic.
Recommended
Induction Cooktop Touch Interface
The R5F51308ADFP#30 drives induction-cooktop slider-and-key HMIs thanks to its 36-channel CTSU with improved water resistance and noise immunity over earlier Renesas touch MCUs. A 32 MHz core is fast enough to scan the full slider array at 8 ms per cycle while still running the IEC60730 self-test and the user-interface graphics state machine. The 512 KB Flash stores the touch library, slider gesture recognition, and fault-detection firmware without external memory. The 88 available I/Os allow direct connection to IGBT gate drivers, fan PWM, and pan-presence comparator logic, simplifying the BOM. Its 5 V tolerance eliminates level shifters on legacy analog front-ends.
Recommended
Refrigerator Temperature & Door HMI
The R5F51308ADFP#30 is well suited for refrigerator main boards that need to combine a multi-zone temperature-control loop, a capacitive-touch door panel, and an LCD segment driver. The 12-bit ADC samples NTC thermistors with 0.25 C resolution for compressor defrost cycles, while the on-chip RTC enables adaptive energy-saving modes. The wide -40C to +85C operating range covers unheated garage and freezer-cabinet environments. 48 KB SRAM holds the touch-sensing buffer plus a small TCP/IP fragment for smart-fridge connectivity modules. Compared with external touch controllers, integrating CTSU into the main MCU reduces quiescent current and removes an SPI bus from the design.
Recommended
Smart Thermostat Wall Module
Wall-mounted smart thermostats benefit from the R5F51308ADFP#30's capacitive touch sensing, 5 V tolerance, and 32 MHz RXv1 performance at modest power consumption. The 36 CTSU channels support slider-setpoint, mode buttons, and proximity wake-up - all with the noise immunity needed near switched-mode HVAC relays. 512 KB Flash accommodates a real-time OS, a Matter-over-Wi-Fi or BLE bridge, and OTA bootloader. The 88 I/Os interface directly to a triac for fan control and to a 0-10 V dimmer for backlight, simplifying PCB routing. Compared with ARM Cortex-M0+ alternatives at the same frequency, RXv1 offers stronger deterministic interrupt latency for HVAC safety routines.
Recommended
Industrial Sensor HMI Panel
Factory-floor sensor HMI panels use the R5F51308ADFP#30 for its rugged -40C to +85C rating, integrated IEC60730 class-B support, and ability to drive up to 6 communication channels (SCI, I2C, SPI) for multi-sensor aggregation. The 32 MHz core runs a CAN-style industrial protocol stack plus a 4-line LCD user interface without DMA stalls. CTSU enables sealed front-panel designs where the sensor enclosure is IP65-rated and free of mechanical key switches. Compared to NXP LPC or STM32 alternatives, RX130 provides comparable flash density with a tighter latency profile for safety shutdown routines.
Recommended
Small IoT Sensor Hub / Appliance Gateway
Connected appliances and small IoT hubs use the R5F51308ADFP#30 as a local sensor-aggregation MCU, leveraging its 6 communication channels to bridge UART sensors, I2C peripherals, and an SPI radio module. 512 KB Flash holds an lwIP TCP/IP stack or a private RF protocol alongside the main application, and 48 KB SRAM keeps packet buffers in-chip without external SRAM. The 5 V tolerance simplifies integration with analog 4-20 mA loops and legacy actuator drivers, while the RXv1 core's fast interrupt response ensures deterministic sensor polling. Compared to a separate touch MCU plus a Wi-Fi SoC, integrating CTSU and a host-side MCU into one part saves board space and reduces total BOM cost.
Recommended
Recommended Products Summary
Engineering reference data for R5F51308ADFP#30 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | R5F51307ADFP#30 | R5F51305ADFP#30 | R5F51308ADFP#10 | R5F51306ADFP#30 | PIC32MX575F512H-80I/MR |
|---|---|---|---|---|---|---|
| Package | 100-LFQFP (14x14) | 100-LFQFP (14x14) - same | 100-LFQFP (14x14) - same | 100-LFQFP (14x14) - same | 100-LFQFP (14x14) - same | 100-LQFP (LQFP-100) - same |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Microchip Technology |
| Core / Architecture | RXv1 32-bit | RXv1 32-bit | RXv1 32-bit | RXv1 32-bit | RXv1 32-bit | MIPS M4K 32-bit |
| Operating Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 80 MHz |
| Flash | 512 KB | 384 KB | 256 KB | 512 KB | 256 KB | 512 KB |
| SRAM | 48 KB | 48 KB | 48 KB | 48 KB | 48 KB | 64 KB |
| Capacitive Touch Channels | Up to 36 | Up to 36 | Up to 36 | Up to 36 | Up to 36 | 0 (external CTMU required) |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -20C to +85C (consumer) | -40C to +85C (industrial) | -40C to +85C (industrial) |
| Supply Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 2.3 V to 3.6 V |
| IEC60730 Compliance | Yes (on-chip library support) | Yes | Yes | Yes | Yes | Yes (via MPLAB XC32 Class B library) |
Key Differentiators
- Integrated 36-channel CTSU with improved water resistance (vs PIC32MX575F512H-80I/MR)
- Native 5 V operation (1.8 V to 5.5 V) (vs PIC32MX575F512H-80I/MR)
- RXv1 deterministic 32-bit performance at 32 MHz (vs R5F51305ADFP#30 (256 KB Flash))
- Industrial -40C to +85C temperature grade (vs R5F51308ADFP#10)
Design Notes
The R5F51308ADFP#30 operates from 1.8 V to 5.5 V single supply, so a single 3.3 V LDO (e.g. NCV4274ADS50R4G with 5 V variant) is sufficient for the digital rail. Place a 4.7 uF bulk capacitor plus 0.1 uF decoupling close to each VCC pin, and a 1 uF + 0.01 uF pair on AVCC. The VCL pin MUST have a 0.47 uF decoupling capacitor to ground; omitting it causes unstable internal regulator behavior and Flash programming failures. Estimated: total MCU supply current at 32 MHz active is approximately 15 mA, well below typical 100 mA LDO ratings.
Keep the 32 MHz main oscillator traces (XTAL/EXTAL) and the 32.768 kHz sub-oscillator traces (XCIN/XCOUT) as short as possible and away from switching nodes such as triac drivers and IGBT gate lines. The 100-LFQFP exposes 88 I/Os - route CTSU touch channels with guard traces (grounded pour) to keep capacitive loading consistent across channels. Estimated: typical CTSU trace impedance of 50 ohm with 10 pF load benefits from a 5 mm trace-width-to-ground spacing ratio. A solid 4-layer ground pour under the MCU is recommended to minimize radiated emissions from the high-speed RXv1 core.
Three common pitfalls when designing with R5F51308ADFP#30: (1) selecting '#10' instead of '#30' for outdoor appliances - the consumer temperature grade bottoms out at -20C and will fail cold-start tests; (2) forgetting to enable the on-chip IEC60730 self-test library before Flash programming - the library must be linked into the firmware image, not bolted on later; (3) sharing the analog AVCC with the digital VCC rail without an inductor bead, which couples MCU switching noise into the 12-bit ADC readings. Always boot the device through the Renesas e2 studio or Renesas Flash Programmer with the correct algorithm file for the 512 KB variant.
Compliance Information
RoHS compliance confirmed via JLCPCB listing; AEC-Q100 not applicable - this is a consumer/industrial MCU, not an automotive-grade part. IEC60730 functional-safety compliance is supported via on-chip self-test library but requires firmware-level certification by the appliance maker.
