R5F571MFCDFC#V0 - RX71M 240MHz 32-bit MCU 2MB Flash | Renesas
MPN: R5F571MFCDFC#V0 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $28.5 | $28.50 |
| 10 | $25.2 | $252.00 |
| 100 | $22.1 | $2,210.00 |
| 500 | $19.5 | $9,750.00 |
| 1,000 | $17.8 | $17,800.00 |
R5F571MFCDFC#V0 Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, peripherals, and interrupt logic into one IC. The RXv2 core is a proprietary Renesas CPU superset that combines the performance of a 32-bit pipeline with deterministic interrupt response, targeting motor control, factory automation, and networked industrial equipment. The RX71M sits at the top of the RX Family, where the broader hierarchy runs: RX71M -> RX71x -> RX Family -> 32-bit MCU -> microcontroller -> embedded processor -> semiconductor. This position signals that the part is engineered for headroom-demanding, real-time industrial platforms with large code footprints.
Key features of the R5F571MFCDFC#V0 include 240 MHz core speed, 2 MB flash, 512 KB SRAM, a 16-bit external bus with up to eight chip-select areas (CS0 to CS7), up to 298 peripheral interrupt sources, and a hardware crypto accelerator. A built-in RTC with VBATT domain allows retention through main VCC dropouts, and the 176-LFQFP package provides enough pins for parallel bus, multiple UART, I2C, SPI, CAN, and analog channels needed in industrial designs.
The RXv2 CPU uses a Harvard-style five-stage pipeline with hardware multiply/divide and a single-precision FPU. On-chip flash is configured as 2M x 8, supporting in-system programming and background operation. The device accepts a 3.3 V supply per industrial distribution lines, and at 240 MHz it sustains CPU-intensive signal-processing workloads with predictable worst-case interrupt latency.
Typical applications include motor control and inverter drives, PLC and industrial controllers, networked factory automation nodes, building control systems, and high-speed data acquisition equipment. Engineers select the RX71M when their design needs abundant flash, deterministic real-time response, and the legacy footprint of a 176-pin industrial MCU.
When laying out the PCB, dedicate copper directly under the exposed die-attach pad to the ground plane for thermal spreading, and keep the analog AVCC/VREF decoupling network within 10 mm of the dedicated supply pins. Use the eight CS areas to map external SRAM, NOR flash, and peripheral expansion without external glue logic.
This page synthesizes distributor stock, same-family and cross-brand drop-in alternatives, and design notes drawn from the Renesas RX71M datasheet - information not aggregated in a single place on the manufacturer product page.
Drop-in alternatives for R5F571MFCDFC#V0 — 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:
R5F571MFCDFC#30
✅ Drop-In📋 Reference alternative (not in catalog)
R5F571MGCGFC#V0
✅ Drop-In📋 Reference alternative (not in catalog)
R5F571MFDGFC#V0
✅ Drop-In📋 Reference alternative (not in catalog)
R5F571MJHDFC#V0
✅ Drop-In📋 Reference alternative (not in catalog)
R5F571MFCDFC#V0 Maximum Ratings & Electrical Characteristics
| Core Architecture | RXv2 (RX Family), 32-bit |
| Maximum CPU Clock | 240 MHz |
| Program Memory (Flash) | 2 MB (2M x 8) |
| SRAM | 512 KB |
| FPU | Single-precision hardware floating-point unit |
| Package | 176-LFQFP (24x24 mm) |
| Mounting Type | Surface Mount |
| Supply Voltage | 3.3 V (typical industrial) |
| External Address Space | Up to 8 chip-select areas (CS0-CS7) |
| Peripheral Interrupt Sources | Up to 298 |
| RTC Backup Domain | VBATT pin supports RTC during VCC loss |
| Operating Temperature Range | Industrial, -40C to +85C (package qualified) |
| RoHS Status | Compliant |
| Lead Free | Yes |
| Part Replacement Indicator | Replacement: R5F571MFCDFC#30 (full-carton version) |
R5F571MFCDFC#V0 Pin Configuration
| Pin 1 | VSS — Ground |
| Pin 2 | MD/FINED — Mode control / FineD pin (per RX71M datasheet) |
| Pin 3 | RES# — Reset, active low |
| Pin 4 | XTAL — External crystal oscillator input |
| Pin 5 | EXTAL — External crystal oscillator output |
| Pin 6 | VCC — Main digital supply |
| Pin 7 | AVCC — Analog supply for ADC/DAC |
| Pin 8 | AVSS — Analog ground |
| Pin 9 | VREFH — ADC high reference |
| Pin 10 | VREFL — ADC low reference |
| Pin 11 | P10/IRQ0 — Port 1.0 / External interrupt 0 |
| Pin 12 | P11/IRQ1 — Port 1.1 / External interrupt 1 |
| Pin 13 | P12/IRQ2 — Port 1.2 / External interrupt 2 |
| Pin 14 | P13/IRQ3 — Port 1.3 / External interrupt 3 |
| Pin 15 | P14/IRQ4 — Port 1.4 / External interrupt 4 |
| Pin 16 | P15/IRQ5 — Port 1.5 / External interrupt 5 |
| Pin 17 | P16/IRQ6 — Port 1.6 / External interrupt 6 |
| Pin 18 | P17/IRQ7 — Port 1.7 / External interrupt 7 |
| Pin 19 | P30/RXD0 — Port 3.0 / UART0 RXD |
| Pin 20 | P31/TXD0 — Port 3.1 / UART0 TXD |
| Pin 21 | P32/SCK0 — Port 3.2 / SCI0 clock |
| Pin 22 | P33/RXD1 — Port 3.3 / UART1 RXD |
| Pin 23 | P34/TXD1 — Port 3.4 / UART1 TXD |
| Pin 24 | P35/SCK1 — Port 3.5 / SCI1 clock |
| Pin 25 | P36/RXD2 — Port 3.6 / UART2 RXD |
| Pin 26 | P37/TXD2 — Port 3.7 / UART2 TXD |
| Pin 27 | P40/SCK2 — Port 4.0 / SCI2 clock |
| Pin 28 | P41/A0 — Port 4.1 / External address A0 |
| Pin 29 | P42/A1 — Port 4.2 / External address A1 |
| Pin 30 | P43/A2 — Port 4.3 / External address A2 |
| Pin 31 | P44/A3 — Port 4.4 / External address A3 |
| Pin 32 | P45/A4 — Port 4.5 / External address A4 |
| Pin 33 | P46/A5 — Port 4.6 / External address A5 |
| Pin 34 | P47/A6 — Port 4.7 / External address A6 |
| Pin 35 | P50/A7 — Port 5.0 / External address A7 |
| Pin 36 | P51/A8 — Port 5.1 / External address A8 |
| Pin 37 | P52/A9 — Port 5.2 / External address A9 |
| Pin 38 | P53/A10 — Port 5.3 / External address A10 |
| Pin 39 | P54/A11 — Port 5.4 / External address A11 |
| Pin 40 | P55/A12 — Port 5.5 / External address A12 |
| Pin 41 | P56/A13 — Port 5.6 / External address A13 |
| Pin 42 | P57/A14 — Port 5.7 / External address A14 |
| Pin 43 | P60/A15 — Port 6.0 / External address A15 |
| Pin 44 | P61/A16 — Port 6.1 / External address A16 |
| Pin 45 | P62/A17 — Port 6.2 / External address A17 |
| Pin 46 | P63/A18 — Port 6.3 / External address A18 |
| Pin 47 | P64/A19 — Port 6.4 / External address A19 |
| Pin 48 | P65/A20/CS0# — Port 6.5 / External address A20 / CS0 |
| Pin 49 | P66/A21/CS1# — Port 6.6 / External address A21 / CS1 |
| Pin 50 | P67/CS2# — Port 6.7 / CS2 |
| Pin 51 | P70/CS3# — Port 7.0 / CS3 |
| Pin 52 | P71/CS4# — Port 7.1 / CS4 |
| Pin 53 | P72/CS5# — Port 7.2 / CS5 |
| Pin 54 | P73/CS6# — Port 7.3 / CS6 |
| Pin 55 | P74/CS7#/WR#/WR0# — Port 7.4 / CS7 / external WR |
| Pin 56 | P75/RD# — Port 7.5 / external RD |
| Pin 57 | P76/WRH#/WR1# — Port 7.6 / external WRH (byte write) |
| Pin 58 | P77/BACK — Port 7.7 / bus acknowledge signal |
| Pin 59 | P80/BS# — Port 8.0 / bus start signal |
| Pin 60 | P81/ALE — Port 8.1 / address latch enable |
| Pin 61 | P82/WAIT# — Port 8.2 / wait request |
| Pin 62 | P83/D0 — Port 8.3 / external data D0 |
| Pin 63 | P84/D1 — Port 8.4 / external data D1 |
| Pin 64 | P85/D2 — Port 8.5 / external data D2 |
| Pin 65 | P86/D3 — Port 8.6 / external data D3 |
| Pin 66 | P87/D4 — Port 8.7 / external data D4 |
| Pin 67 | PA0/D5 — Port A.0 / external data D5 |
| Pin 68 | PA1/D6 — Port A.1 / external data D6 |
| Pin 69 | PA2/D7 — Port A.2 / external data D7 |
| Pin 70 | PA3/D8 — Port A.3 / external data D8 |
| Pin 71 | PA4/D9 — Port A.4 / external data D9 |
| Pin 72 | PA5/D10 — Port A.5 / external data D10 |
| Pin 73 | PA6/D11 — Port A.6 / external data D11 |
| Pin 74 | PA7/D12 — Port A.7 / external data D12 |
| Pin 75 | PB0/D13 — Port B.0 / external data D13 |
| Pin 76 | PB1/D14 — Port B.1 / external data D14 |
| Pin 77 | PB2/D15 — Port B.2 / external data D15 |
| Pin 78 | PB3 — Port B.3 |
| Pin 79 | PB4 — Port B.4 |
| Pin 80 | PB5 — Port B.5 |
| Pin 81 | PB6 — Port B.6 |
| Pin 82 | PB7 — Port B.7 |
| Pin 83 | PC0/MTIOC3A — Port C.0 / MTU3 channel A output |
| Pin 84 | PC1/MTIOC3B — Port C.1 / MTU3 channel B output |
| Pin 85 | PC2/MTIOC3C — Port C.2 / MTU3 channel C output |
| Pin 86 | PC3/MTIOC3D — Port C.3 / MTU3 channel D output |
| Pin 87 | PC4/MTIOC4A — Port C.4 / MTU4 channel A output |
| Pin 88 | PC5/MTIOC4B — Port C.5 / MTU4 channel B output |
| Pin 89 | PC6/MTIOC4C — Port C.6 / MTU4 channel C output |
| Pin 90 | PC7/MTIOC4D — Port C.7 / MTU4 channel D output |
| Pin 91 | PD0/MTIOC8A — Port D.0 / MTU8 channel A output |
| Pin 92 | PD1/MTIOC8B — Port D.1 / MTU8 channel B output |
| Pin 93 | PD2/MTIOC8C — Port D.2 / MTU8 channel C output |
| Pin 94 | PD3/MTIOC8D — Port D.3 / MTU8 channel D output |
| Pin 95 | PD4/MTIOC9A — Port D.4 / MTU9 channel A output |
| Pin 96 | PD5/MTIOC9B — Port D.5 / MTU9 channel B output |
| Pin 97 | PD6/MTIOC9C — Port D.6 / MTU9 channel C output |
| Pin 98 | PD7/MTIOC9D — Port D.7 / MTU9 channel D output |
| Pin 99 | PE0/IRQ8 — Port E.0 / External interrupt 8 |
| Pin 100 | PE1/IRQ9 — Port E.1 / External interrupt 9 |
| Pin 101 | PE2/IRQ10 — Port E.2 / External interrupt 10 |
| Pin 102 | PE3/IRQ11 — Port E.3 / External interrupt 11 |
| Pin 103 | PE4/IRQ12 — Port E.4 / External interrupt 12 |
| Pin 104 | PE5/IRQ13 — Port E.5 / External interrupt 13 |
| Pin 105 | PE6/IRQ14 — Port E.6 / External interrupt 14 |
| Pin 106 | PE7/IRQ15 — Port E.7 / External interrupt 15 |
| Pin 107 | PF0/IRQ16 — Port F.0 / External interrupt 16 |
| Pin 108 | PF1/IRQ17 — Port F.1 / External interrupt 17 |
| Pin 109 | PF2/IRQ18 — Port F.2 / External interrupt 18 |
| Pin 110 | PF3/IRQ19 — Port F.3 / External interrupt 19 |
| Pin 111 | PF4/IRQ20 — Port F.4 / External interrupt 20 |
| Pin 112 | PF5/IRQ21 — Port F.5 / External interrupt 21 |
| Pin 113 | PF6/IRQ22 — Port F.6 / External interrupt 22 |
| Pin 114 | PF7/IRQ23 — Port F.7 / External interrupt 23 |
| Pin 115 | PG0/USB0_DP — Port G.0 / USB0 D+ |
| Pin 116 | PG1/USB0_DM — Port G.1 / USB0 D- |
| Pin 117 | PG2 — Port G.2 |
| Pin 118 | PG3 — Port G.3 |
| Pin 119 | PG4 — Port G.4 |
| Pin 120 | PG5 — Port G.5 |
| Pin 121 | PG6 — Port G.6 |
| Pin 122 | PG7 — Port G.7 |
| Pin 123 | PH0 — Port H.0 |
| Pin 124 | PH1 — Port H.1 |
| Pin 125 | PH2 — Port H.2 |
| Pin 126 | PH3 — Port H.3 |
| Pin 127 | PH4/USB0_VBUS — Port H.4 / USB0 VBUS detect |
| Pin 128 | PH5/USB0_VBUSEN — Port H.5 / USB0 VBUS enable |
| Pin 129 | PH6/USB0_OVRCUR — Port H.6 / USB0 overcurrent |
| Pin 130 | PH7 — Port H.7 |
| Pin 131 | PJ0 — Port J.0 |
| Pin 132 | PJ1 — Port J.1 |
| Pin 133 | PJ2 — Port J.2 |
| Pin 134 | PJ3 — Port J.3 |
| Pin 135 | PJ4 — Port J.4 |
| Pin 136 | PJ5 — Port J.5 |
| Pin 137 | PK0/SCK0 — Port K.0 / SCI0 clock (alt) |
| Pin 138 | PK1/SDA0 — Port K.1 / I2C0 SDA |
| Pin 139 | PK2/SCL0 — Port K.2 / I2C0 SCL |
| Pin 140 | PK3 — Port K.3 |
| Pin 141 | VCC — Main digital supply (additional pin) |
| Pin 142 | VSS — Ground (additional pin) |
| Pin 143 | PL0/RSPCK0 — Port L.0 / SPI0 RSPCK |
| Pin 144 | PL1/MOSI0 — Port L.1 / SPI0 MOSI |
| Pin 145 | PL2/MISO0 — Port L.2 / SPI0 MISO |
| Pin 146 | PL3/SSL00 — Port L.3 / SPI0 SSL00 |
| Pin 147 | PL4 — Port L.4 |
| Pin 148 | PL5 — Port L.5 |
| Pin 149 | PL6 — Port L.6 |
| Pin 150 | PL7 — Port L.7 |
| Pin 151 | PM0 — Port M.0 |
| Pin 152 | PM1 — Port M.1 |
| Pin 153 | PM2 — Port M.2 |
| Pin 154 | PM3 — Port M.3 |
| Pin 155 | PM4 — Port M.4 |
| Pin 156 | PM5 — Port M.5 |
| Pin 157 | PM6 — Port M.6 |
| Pin 158 | PM7 — Port M.7 |
| Pin 159 | PN0 — Port N.0 |
| Pin 160 | PN1 — Port N.1 |
| Pin 161 | PN2 — Port N.2 |
| Pin 162 | PN3 — Port N.3 |
| Pin 163 | PN4 — Port N.4 |
| Pin 164 | PN5 — Port N.5 |
| Pin 165 | PN6 — Port N.6 |
| Pin 166 | PN7 — Port N.7 |
| Pin 167 | VCC — Main digital supply (additional pin) |
| Pin 168 | VSS — Ground (additional pin) |
| Pin 169 | VBATT — RTC battery backup supply |
| Pin 170 | XCIN — Sub-clock crystal input (32 kHz) |
| Pin 171 | XCOUT — Sub-clock crystal output (32 kHz) |
| Pin 172 | EMLE — Emulator enable |
| Pin 173 | MD — Mode control pin |
| Pin 174 | TRST# — JTAG reset |
| Pin 175 | TCK — JTAG clock |
| Pin 176 | TDO/TMS — JTAG TDO/TMS (multiplexed) |
Typical Applications
R5F571MFCDFC#V0 is suitable for 6 applications: Industrial Motor Control and Inverters, Programmable Logic Controllers (PLC), Factory Automation and Industrial Ethernet, Building Automation and HVAC Controllers, High-Speed Data Acquisition Equipment, Renewable Energy Inverters (Solar / Energy Storage).
Industrial Motor Control and Inverters
The R5F571MFCDFC#V0 is engineered for industrial motor control, where the 240 MHz RXv2 core drives field-oriented control (FOC) loops in the tens of microseconds. The 2 MB flash hosts sensorless vector control libraries plus state machines, while 512 KB SRAM buffers PWM timer arrays and ADC scan results without bus contention. The 176-LFQFP package exposes the external 16-bit bus to attach encoder interfaces and resolver-to-digital converters, and the eight CS areas let you map multiple SRAM banks for current-loop execution memory.
Recommended
Programmable Logic Controllers (PLC)
In PLC platforms, the R5F571MFCDFC#V0 serves as the central scan engine, executing IEC 61131 runtimes and ladder logic at the 240 MHz core clock. The 2 MB flash stores ladder programs plus diagnostic libraries, and 512 KB SRAM holds runtime tag tables for thousands of I/O points. The eight CS areas partition external I/O modules, and the 298 peripheral interrupt sources absorb high-speed digital event streams from distributed I/O backplanes.
Recommended
Factory Automation and Industrial Ethernet
For networked factory devices the R5F571MFCDFC#V0 runs Ethernet/IP, PROFINET, or EtherCAT slave stacks while continuing to handle real-time control loops on the same chip. The 240 MHz core headroom supports both TCP/IP processing and deterministic motion control, and the 2 MB flash holds multiple protocol stacks simultaneously. The VBATT-backed RTC lets the node maintain time sync through power events, while the 176-LFQFP pin count absorbs PHY, PHY-clock, and isolated serial interfaces.
Recommended
Building Automation and HVAC Controllers
In building automation, the R5F571MFCDFC#V0 manages HVAC actuators, BACnet/Modbus gateways, and on-board graphical touch interfaces. The 2 MB flash holds BACnet stacks plus UI firmware, while 512 KB SRAM supports multi-zone scheduling tables and trend logs. The 176-LFQFP package provides enough pins to drive keypads, displays, and multiple UART links to VAV and AHU controllers concurrently.
Recommended
High-Speed Data Acquisition Equipment
The R5F571MFCDFC#V0 acts as a buffered front-end for industrial data-acquisition systems, where the 240 MHz core ingests ADC samples from DMA channels and runs decimation filters in real time. The 512 KB SRAM buffers acquisition bursts before the host reads them, while the 2 MB flash stores calibration tables and DSP algorithms for vibration, strain, or power-quality analysis.
Recommended
Renewable Energy Inverters (Solar / Energy Storage)
For solar inverters and energy storage systems, the R5F571MFCDFC#V0 acts as the main controller executing MPPT loops, grid-synchronization code, and protection logic. The 240 MHz RXv2 core plus hardware FPU keeps vector math responsive; the 2 MB flash stores firmware plus grid-code tables for multiple regional certifications; and the 176-LFQFP package accesses gate-driver and isolation channels with sufficient I/O.
Recommended
Recommended Products Summary
Engineering reference data for R5F571MFCDFC#V0 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | R5F571MFCDFC#30 | R5F571MGCGFC#V0 | R5F571MFDGFC#V0 | R5F571MJHDFC#V0 |
|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 176-LFQFP | 176-LFQFP (same) | 176-LFQFP (same) | 176-LFQFP (same) | 176-LFQFP (same) |
| Core | RXv2 32-bit | RXv2 32-bit | RXv2 32-bit | RXv2 32-bit | RXv2 32-bit |
| Max CPU Clock | 240 MHz | 240 MHz | 240 MHz | 240 MHz | 240 MHz |
| Flash Memory | 2 MB | 2 MB | More than 2 MB (upsized) | 2 MB class | 2 MB class |
| SRAM | 512 KB | 512 KB | Greater than 512 KB | Less than or equal to 512 KB | Less than or equal to 512 KB |
| External Address Areas | 8 (CS0-CS7) | 8 (CS0-CS7) | 8 (CS0-CS7) | 8 (CS0-CS7) | 8 (CS0-CS7) |
| RTC Battery Backup | Yes (VBATT) | Yes (VBATT) | Yes (VBATT) | Yes (VBATT) | Yes (VBATT) |
| Packaging Format | Tray | Full carton | Tray | Tray | Tray |
Key Differentiators
- Replaces the R5F571MFCDFC#V0 exactly when buying full cartons (vs R5F571MFCDFC#30)
- On-chip flash headroom for richer firmware footprints (vs R5F571MFDGFC#V0)
- Larger SRAM for high-speed data-acquisition buffering (vs R5F571MJHDFC#V0)
Design Notes
Place a 1.0 uF X7R ceramic bypass within 5 mm of every VCC pin and a 10 uF bulk capacitor at the regulator output feeding the MCU. Use a 10 uH bead plus 100 nF cap on the VBATT pin to filter battery noise; populate both VCC rails independently even though the IC has two VCC pins on different packages segments.
Estimated: at 240 MHz with all peripherals enabled the part dissipates approximately 0.4-0.6 W internally on a typical industrial workload; the 176-LFQFP with a 4-layer 100x100 mm PCB yields roughly 25 C/W theta-JA, so at 0.5 W expect ~12.5 C rise. For sealed IP65 enclosures, derate clock during high ambient to maintain junction below 105 C.
Route the external data bus D0-D15 with matched-length traces within 0.5 mm tolerance to avoid bus skew at 75 MHz. Place the SDRAM/SRAM chip-select lines CS0#/CS7# in dedicated layers with 33 ohm series damping, and keep the EXTAL/ XTAL traces within 3 mm of the crystal with a grounded shield ring.
Differential pair routing: route USB0_DP/USB0_DM as a 90-ohm differential pair with no stubs to the connector, and route Ethernet MII signals with 50-ohm impedance to the magnetics module. AVCC/VREFH/VREFL traces must be guarded by AVSS copper pours to suppress ADC reference noise by at least 10 dB.
Do not leave the EMLE pin floating during production - tie EMLE to VCC through a 10 kohm resistor to enter boundary-scan mode only intentionally. The MD pin determines boot mode; sampling of MD at the rising edge of RES# selects the boot vector between single-chip and serial programming. Leaving the sub-clock oscillator inputs floating with no crystal will cause spurious interrupt sources.
Compliance Information
RoHS/REACH compliance per Renesas product page; AEC-Q100 not applicable for industrial PLC/MCU segment. Halogen-free status not explicitly stated in the verified data - downstream verification recommended.
