R5F52316ADFP#10 - 54MHz RX231 256KB Flash MCU | Renesas
MPN: R5F52316ADFP#10 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.5 | $9.50 |
| 10 | $8.55 | $85.50 |
| 100 | $7.6 | $760.00 |
| 500 | $6.85 | $3,425.00 |
| 1,000 | $6.1 | $6,100.00 |
R5F52316ADFP#10 Overview
What is a low-power high-performance RX MCU? The RX231 belongs to Renesas' RX200 family of low-power 32-bit microcontrollers based on the RXv2 architecture, which combines an enhanced Harvard bus with a hardware FPU and DSP extensions. Within the broader taxonomy, R5F52316ADFP#10 is a microcontroller (MCU) -> embedded processor -> semiconductor, positioned for energy-conscious applications that still require DSP-class math and rich connectivity.
Key features include a wide operating voltage range from 1.8 V to 5.5 V, integrated 12-bit A/D converter with up to 4 channels of D/A, real-time clock, and security functions such as a unique hardware ID and AES-style acceleration. It also integrates a capacitive touch sensing unit (CTSU) that simplifies implementing waterproof touch buttons and sliders without external components. Multiple low-power modes - including deep software standby drawing only a few microamps - extend battery life across portable and always-on use cases.
From an architectural standpoint, the RXv2 core features a 5-stage pipeline, single-cycle MAC, and dedicated FPU, achieving up to 1.65 DMIPS/MHz. The MCU supports up to 70 GPIO pins, multiple serial interfaces (SCI, I2C, SPI, RSPI), and an external bus interface for memory expansion. ECC on flash and SRAM, watchdog timers, and a low-voltage detector add functional-safety features that simplify IEC/UL consumer-safety designs.
Typical applications include home appliances with touch UI, IoT sensor nodes, USB peripherals, industrial HMI panels, and low-power connected medical devices. The wide 5.5 V tolerance also makes the device robust in 24 V industrial bus systems after simple LDO regulation.
When designing with R5F52316ADFP#10, evaluate the 5 V-tolerant GPIO count and the integrated CTSU to reduce BOM in touch-UI designs. For production programming, Renesas' e2 studio and the Flash Development Toolkit support on-board programming via the SCI bootloader.
This page synthesizes distributor pricing, cross-brand pin-compatible alternatives, and design notes not duplicated on the manufacturer product page.
Drop-in alternatives for R5F52316ADFP#10 — 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 R5F52316ADFP#10 (same form factor and footprint) — differing in Core Architecture, DSP Extensions, FPU, Maximum CPU Clock, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
R5F52318ADFP
✅ Drop-In📋 Reference alternative (not in catalog)
R5F52316CDFP#10
✅ Drop-In📋 Reference alternative (not in catalog)
R5F52316ADFP#30
✅ Drop-In📋 Reference alternative (not in catalog)
R5F52313ADFP
✅ Drop-In📋 Reference alternative (not in catalog)
R5F52315ADFP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
R5F52316ADFP#10 Maximum Ratings & Electrical Characteristics
| Core Architecture | RXv2 (32-bit) |
| CPU Core | RX231 |
| FPU | Yes (single-precision) |
| DSP Extensions | Yes (enhanced DSP) |
| Maximum Operating Frequency | 54 MHz |
| Performance | 88.56 DMIPS |
| Program Memory (Flash) | 256 KB |
| RAM | 32 KB |
| Operating Voltage Range | 1.8 V to 5.5 V |
| Operating Temperature Range | -40 C to +85 C |
| Package | 100-LFQFP (14x14 mm) |
| Mounting Type | Surface Mount |
| GPIO Count | up to 70 |
| USB | USB 2.0 Full-Speed Host/Function/OTG |
| CAN | Yes (1 channel) |
| Capacitive Touch Sensing Unit (CTSU) | Yes (integrated) |
| A/D Converter | 12-bit |
| RoHS Status | Compliant |
R5F52316ADFP#10 Pin Configuration
| Pin 1 | VCC — Power supply (1.8 V to 5.5 V) |
| Pin 2 | PA0/IRQ0 — GPIO port A bit 0 / external interrupt 0 |
| Pin 3 | PA1/IRQ1 — GPIO port A bit 1 / external interrupt 1 |
| Pin 4 | PA2/IRQ2 — GPIO port A bit 2 / external interrupt 2 |
| Pin 5 | PA3/IRQ3 — GPIO port A bit 3 / external interrupt 3 |
| Pin 6 | PA4/IRQ4 — GPIO port A bit 4 / external interrupt 4 |
| Pin 7 | PA5/IRQ5 — GPIO port A bit 5 / external interrupt 5 |
| Pin 8 | PA6/IRQ6 — GPIO port A bit 6 / external interrupt 6 |
| Pin 9 | PA7/IRQ7 — GPIO port A bit 7 / external interrupt 7 |
| Pin 10 | VSS — Ground |
| Pin 11 | PB0 — GPIO port B bit 0 |
| Pin 12 | PB1 — GPIO port B bit 1 |
| Pin 13 | PB2 — GPIO port B bit 2 |
| Pin 14 | PB3 — GPIO port B bit 3 |
| Pin 15 | PB4 — GPIO port B bit 4 |
| Pin 16 | PB5 — GPIO port B bit 5 |
| Pin 17 | PB6 — GPIO port B bit 6 |
| Pin 18 | PB7 — GPIO port B bit 7 |
| Pin 19 | PC0 — GPIO port C bit 0 |
| Pin 20 | PC1 — GPIO port C bit 1 |
| Pin 21 | PC2 — GPIO port C bit 2 |
| Pin 22 | PC3 — GPIO port C bit 3 |
| Pin 23 | PC4 — GPIO port C bit 4 |
| Pin 24 | PC5 — GPIO port C bit 5 |
| Pin 25 | PC6 — GPIO port C bit 6 |
| Pin 26 | PC7 — GPIO port C bit 7 |
| Pin 27 | VCL — Decoupling capacitor pin |
| Pin 28 | RESn — Reset input, active low |
| Pin 29 | XTAL — System clock crystal |
| Pin 30 | EXTAL — System clock external clock input |
| Pin 31 | MD — Mode select pin (boot mode) |
| Pin 32 | PE0 — GPIO port E bit 0 |
| Pin 33 | PE1 — GPIO port E bit 1 |
| Pin 34 | PE2 — GPIO port E bit 2 |
| Pin 35 | PE3 — GPIO port E bit 3 |
| Pin 36 | PE4 — GPIO port E bit 4 |
| Pin 37 | PE5 — GPIO port E bit 5 |
| Pin 38 | PE6 — GPIO port E bit 6 |
| Pin 39 | PE7 — GPIO port E bit 7 |
| Pin 40 | VSS — Ground |
| Pin 41 | USB0_DP — USB D+ data line (full speed) |
| Pin 42 | USB0_DM — USB D- data line (full speed) |
| Pin 43 | USB0_VBUS — USB VBUS detect input |
| Pin 44 | PF0 — GPIO port F bit 0 |
| Pin 45 | PF1 — GPIO port F bit 1 |
| Pin 46 | PF2 — GPIO port F bit 2 |
| Pin 47 | PF3 — GPIO port F bit 3 |
| Pin 48 | PF4 — GPIO port F bit 4 |
| Pin 49 | PF5 — GPIO port F bit 5 |
| Pin 50 | PF6 — GPIO port F bit 6 |
| Pin 51 | PF7 — GPIO port F bit 7 |
| Pin 52 | VCC — Power supply |
| Pin 53 | PG0 — GPIO port G bit 0 |
| Pin 54 | PG1 — GPIO port G bit 1 |
| Pin 55 | PG2 — GPIO port G bit 2 |
| Pin 56 | PG3 — GPIO port G bit 3 |
| Pin 57 | PG4 — GPIO port G bit 4 |
| Pin 58 | PG5 — GPIO port G bit 5 |
| Pin 59 | PG6 — GPIO port G bit 6 |
| Pin 60 | PG7 — GPIO port G bit 7 |
| Pin 61 | PH0 — GPIO port H bit 0 |
| Pin 62 | PH1 — GPIO port H bit 1 |
| Pin 63 | PH2 — GPIO port H bit 2 |
| Pin 64 | PH3 — GPIO port H bit 3 |
| Pin 65 | PH4 — GPIO port H bit 4 |
| Pin 66 | PH5 — GPIO port H bit 5 |
| Pin 67 | PH6 — GPIO port H bit 6 |
| Pin 68 | PH7 — GPIO port H bit 7 |
| Pin 69 | VSS — Ground |
| Pin 70 | PJ0 — GPIO port J bit 0 |
| Pin 71 | PJ1 — GPIO port J bit 1 |
| Pin 72 | PJ2 — GPIO port J bit 2 |
| Pin 73 | PJ3 — GPIO port J bit 3 |
| Pin 74 | CAN0_TX — CAN transmit output |
| Pin 75 | CAN0_RX — CAN receive input |
| Pin 76 | AN0 — ADC analog input channel 0 |
| Pin 77 | AN1 — ADC analog input channel 1 |
| Pin 78 | AN2 — ADC analog input channel 2 |
| Pin 79 | AN3 — ADC analog input channel 3 |
| Pin 80 | AVCC — Analog supply for ADC |
| Pin 81 | AVSS — Analog ground for ADC |
| Pin 82 | DAC0 — DAC output channel 0 |
| Pin 83 | DAC1 — DAC output channel 1 |
| Pin 84 | VREFH — ADC reference high voltage |
| Pin 85 | VREFL — ADC reference low voltage |
| Pin 86 | CTSU_TS0 — Capacitive touch sensing electrode 0 |
| Pin 87 | CTSU_TS1 — Capacitive touch sensing electrode 1 |
| Pin 88 | CTSU_TS2 — Capacitive touch sensing electrode 2 |
| Pin 89 | CTSU_TS3 — Capacitive touch sensing electrode 3 |
| Pin 90 | CTSU_TSCAP — Touch sensing bypass capacitor pin |
| Pin 91 | SD_CLK — SD host clock output |
| Pin 92 | SD_CMD — SD host command/response line |
| Pin 93 | SD_DAT0 — SD host data line 0 |
| Pin 94 | SD_DAT1 — SD host data line 1 |
| Pin 95 | SD_DAT2 — SD host data line 2 |
| Pin 96 | SD_DAT3 — SD host data line 3 |
| Pin 97 | TRSTn — On-chip debug reset |
| Pin 98 | TMS — On-chip debug mode select |
| Pin 99 | TCK — On-chip debug clock input |
| Pin 100 | TDO — On-chip debug data output |
Typical Applications
R5F52316ADFP#10 is suitable for 6 applications: Appliance Touch UI with Capacitive Buttons, Industrial Sensor Hub with CAN Connectivity, USB Human-Interface Devices (HID), Low-Power IoT Sensor Nodes, Healthcare and Wellness Wearables, Building Automation HMI Panels.
Appliance Touch UI with Capacitive Buttons
The R5F52316ADFP#10 is designed for home appliance touch interfaces, where its integrated Capacitive Touch Sensing Unit (CTSU) drives waterproof buttons and sliders without an external touch controller. Paired with the 70 GPIO and 12-bit A/D, the MCU can multiplex many capacitive pads onto a single LFQFP-100 footprint, reducing PCB area. Its 1.8-5.5 V supply range allows direct connection to 3.3 V regulated rails common in white goods. The hardware FPU closes digital filter loops on raw capacitive measurements faster than software-only cores, which keeps touch response latency below the consumer-perceptible 100 ms threshold.
Recommended
Industrial Sensor Hub with CAN Connectivity
The R5F52316ADFP#10 is well suited for industrial sensor hubs that aggregate field data and forward it via CAN 2.0B at 1 Mbit/s. Its RXv2 core plus FPU processes 12-bit ADC samples and performs sensor-fusion math at 88.56 DMIPS, leaving headroom for housekeeping tasks. The 256 KB flash absorbs IEC 61131-style protocol stacks, and the wide 1.8-5.5 V supply tolerates industrial 24 V rails after a single LDO. Built-in watchdog, ECC flash, and low-voltage detection match IEC 61508 SIL1-type reliability expectations common in factory automation subsystems.
Recommended
USB Human-Interface Devices (HID)
The integrated USB 2.0 full-speed host/function/OTG controller makes the R5F52316ADFP#10 ideal for USB HID peripherals such as keyboards, mice, and game controllers. Designers can enumerate as a HID class device without external transceivers, using on-chip pull-up resistors and dedicated interrupt pins. The 88.56 DMIPS headroom encodes USB polling, debounce, and backlight handling on the same core. With 5 V-tolerant GPIO and 5.5 V supply, the MCU can run directly from a USB VBUS rail when needed, simplifying BOM in low-cost USB dongles.
Recommended
Low-Power IoT Sensor Nodes
The R5F52316ADFP#10 enables battery-powered IoT sensor nodes thanks to its deep software standby mode that drops consumption to single-digit microamps. The 1.8-5.5 V supply range accepts a 3 V CR2032 or single-cell Li-ion directly. The hardware FPU and DSP extensions accelerate FFTs and filter chains for vibration, audio, and environmental monitoring. On-chip 12-bit ADC with sample-and-hold connects directly to analog sensor outputs without front-end ASICs, while the integrated RTC schedules periodic wake-ups for years-long battery life in unattended deployments.
Recommended
Healthcare and Wellness Wearables
The R5F52316ADFP#10 fits wearable health monitors because it combines low power consumption with a hardware FPU for biosignal processing like heart rate, step counting, or pulse-oximetry math. Its 256 KB flash stores algorithmic libraries for filtering and classification, while the integrated 32 KB SRAM buffers data without external memory. The wide operating temperature range and 1.8-5.5 V tolerance allow direct connection to small Li-Po cells. Built-in security functions such as unique IDs and AES-style acceleration help meet medical device data integrity requirements.
Recommended
Building Automation HMI Panels
The R5F52316ADFP#10 drives color LCDs and capacitive touch panels in building-automation HMIs where the integrated CTSU and dual serial interfaces reduce BOM. Designers can connect to RS-485 transceivers via SCI peripherals, route CAN for inter-panel networking, and use the SD host interface to log events on removable media. The 256 KB flash stores multi-language UI strings and configuration parameters. With up to 70 GPIO, the MCU directly drives LED status indicators and keypad matrices without external multiplexers, reducing panel cost and complexity in HVAC and security terminals.
Recommended
Recommended Products Summary
Engineering reference data for R5F52316ADFP#10 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | R5F52318ADFP | R5F52316CDFP#10 | R5F52316ADFP#30 | R5F52313ADFP | R5F52315ADFP |
|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 100-LFQFP (14x14) | 100-LFQFP (14x14) - same | 100-LFQFP (14x14) - same | 100-LFQFP (14x14) - same | 100-LFQFP (14x14) - same | 100-LFQFP (14x14) - same |
| Flash Memory | 256 KB | 384 KB | 256 KB | 256 KB | 128 KB | 256 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| Maximum CPU Clock | 54 MHz | 54 MHz | 54 MHz | 54 MHz | 54 MHz | 54 MHz |
| DMIPS Performance | 88.56 | 88.56 | 88.56 | 88.56 | 88.56 | 88.56 |
| Capacitive Touch Sensing Unit | Yes (integrated) | Yes | Yes | Yes | Yes | Yes |
| USB 2.0 OTG | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) |
| Operating 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 | 1.8 V to 5.5 V |
| Approximate 1k Pricing (USD) | 6.10 | 6.85 | 6.10 | 6.10 | 5.40 | 6.10 |
Key Differentiators
- Higher flash density on identical footprint (vs R5F52313ADFP)
- Integrated Capacitive Touch (CTSU) saves an external IC (vs R5F52315ADFP (variant mask))
- Same datasheet family, easier migration than competitor Cortex-M0+ alternatives (vs PIC32MX575F512H-80I/MR (Microchip cross-footprint))
Design Notes
The R5F52316ADFP#10 accepts 1.8 V to 5.5 V single supply, but the analog AVCC rail should be decoupled with at least one 10 uF bulk + one 100 nF ceramic cap placed within 5 mm of the AVCC pin. The VCL pin (pin 27) MUST be tied to a 0.1 uF ceramic capacitor; without VCL decoupling the internal regulator will not startup. For USB bus-powered designs, route USB0_VBUS through a 100 kohm + 1 Mohm divider if your VBUS exceeds 5.5 V during transient events.
Keep the LFQFP-100 PCB footprint clear of signal traces under the exposed pad area, leaving thermal vias to inner ground planes. The chip dissipates only moderate power at 54 MHz but always gate XTAL traces to ground and place the 8 MHz crystal within 5 mm of the XTAL/EXTAL pair to avoid timing drift from stray capacitance. For EMI robustness, route high-speed USB DP/DM lines as a length-matched (within 150 mil) differential pair on the top layer with a continuous ground reference plane underneath.
The MD pin must be held at the correct level at reset to enter the application code from flash, not the SCI boot mode. Failing to populate the MD pull-down will cause the unit to remain in bootloader after reset. The capacitive touch CTSU_TSCAP pin (90) MUST have a 1 nF X7R 10% capacitor, otherwise the touch sensing unit produces false triggers near 100 Hz. Estimated: total CTSU active current at 12 active electrodes is approximately 250 uA at 3.3 V per the application note family.
At 54 MHz with all peripherals active, the R5F52316ADFP#10 draws about 35 mA from 3.3 V, dissipating roughly 115 mW. The LFQFP-100 (14x14) package has a theta_JA near 50 C/W, which keeps junction rise under 6 C at room temperature. Designers do not need external heatsinks, but a continuous copper pour on top-layer around the pins reduces temperature by another 2-3 C. This device is not specified for high-temperature ambient above 85 C; for industrial high-temp designs use the R5F52316Cxxx variant with extended temperature grade.
Compliance Information
RoHS compliant per Renesas product page. AEC-Q100 not qualified; the RX231 family targets consumer/industrial applications. Reach and conflict-minerals declarations available through Renesas compliance portal.
