R5F56216BDFB#V0 - 100MHz RX MCU 256KB Flash 144-LFQFP | Renesas
MPN: R5F56216BDFB#V0 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.4 | $114.00 |
| 100 | $10.1 | $1,010.00 |
| 500 | $9.05 | $4,525.00 |
| 1,000 | $8.2 | $8,200.00 |
R5F56216BDFB#V0 Overview
A 32-bit MCU is a microprocessor in which the data path, registers, and ALU are 32 bits wide, allowing a single instruction to handle larger integer and floating-point values than an 8- or 16-bit controller. The RX core sits in the broader taxonomy as 32-bit microcontroller -> embedded MCU -> semiconductor -> integrated circuit. Combining high CPU throughput, large SRAM, and integrated connectivity, the RX621 family targets applications that previously required an external host processor plus discrete communication ICs.
Key features include 100 MHz core with 165 DMIPS, hardware single-precision FPU, 256 KB Flash / 64 KB SRAM, 10 KB data Flash, Ethernet MAC, USB 2.0 FS Host/Function, CAN, and up to 123 I/O pins. The 12-bit ADC achieves up to 1 Msps with three sample-and-hold units, while the EXDMAC and DTC subsystems handle data movement without CPU intervention.
Typical applications include industrial Ethernet gateways, factory automation controllers, USB-connected human-machine interfaces (HMIs), building-automation concentrators, and CAN-connected sensor hubs. The wide peripheral mix and large SRAM also make the part suitable for point-of-sale terminals and small-format IoT edge nodes.
When designing with the R5F56216BDFB#V0, allocate decoupling per the hardware manual, observe the 0.5 mm LQFP pitch soldering profile (JEDEC J-STD-020 MSL classification applies), and verify the pin assignments against the device's full 144-pin LQFP variant symbol. The part is RoHS-compliant per Renesas product information.
This page synthesizes distributor pricing, drop-in same-package alternatives from the RX621 family, and practical design notes that complement the official Renesas hardware manual rather than repeating it verbatim.
Drop-in alternatives for R5F56216BDFB#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:
R5F56217BDFB#V0
✅ Drop-In📋 Reference alternative (not in catalog)
R5F56218BDFB#V0
✅ Drop-In📋 Reference alternative (not in catalog)
R5F56216BDFB#V0 Maximum Ratings & Electrical Characteristics
| Core | RX v1 32-bit RISC with FPU |
| Maximum Clock Frequency | 100 MHz |
| DMIPS Performance | 165 DMIPS |
| Program Memory (Flash) | 256 KB |
| SRAM | 64 KB |
| Data Flash | 10 KB |
| Supply Voltage | 2.7 V to 3.6 V |
| Operating Temperature | -40 C to +85 C |
| Package | 144-pin LFQFP (20x20 mm, 0.5 mm pitch) |
| I/O Pins | 123 |
| Ethernet | 10/100 MAC (MII/RMII) |
| USB | USB 2.0 FS Host/Function |
| CAN | 1 channel (CAN 2.0B) |
| ADC | 12-bit, up to 1 Msps, 3 S&H |
| Mounting Type | Surface Mount |
| RoHS | Compliant |
R5F56216BDFB#V0 Pin Configuration
| Pin 1 | VCL — Decoupling capacitor connection |
| Pin 2 | VCC — Main power supply 3.3 V |
| Pin 3 | VSS — Digital ground |
| Pin 4 | P04/IRQ4 — Port 0 bit 4 / external interrupt 4 |
| Pin 5 | P05/IRQ5 — Port 0 bit 5 / external interrupt 5 |
| Pin 6 | P34 — Port 3 bit 4 |
| Pin 7 | P35 — Port 3 bit 5 |
| Pin 8 | AVSS — Analog ground |
| Pin 9 | AVCC — Analog supply 3.3 V |
| Pin 10 | VREFH0 — ADC reference high |
| Pin 11 | VREFL0 — ADC reference low |
| Pin 12 | AN000 — ADC analog input 0 |
| Pin 13 | AN001 — ADC analog input 1 |
| Pin 14 | AN002 — ADC analog input 2 |
| Pin 15 | AN003 — ADC analog input 3 |
| Pin 16 | AN004 — ADC analog input 4 |
| Pin 17 | AN005 — ADC analog input 5 |
| Pin 18 | AN006 — ADC analog input 6 |
| Pin 19 | AN007 — ADC analog input 7 |
| Pin 20 | P40 — Port 4 bit 0 |
| Pin 21 | P41 — Port 4 bit 1 |
| Pin 22 | P42 — Port 4 bit 2 |
| Pin 23 | P43 — Port 4 bit 3 |
| Pin 24 | P44 — Port 4 bit 4 |
| Pin 25 | P45 — Port 4 bit 5 |
| Pin 26 | P46 — Port 4 bit 6 |
| Pin 27 | P47 — Port 4 bit 7 |
| Pin 28 | P50 — Port 5 bit 0 |
| Pin 29 | P51 — Port 5 bit 1 |
| Pin 30 | P52 — Port 5 bit 2 |
| Pin 31 | P53 — Port 5 bit 3 |
| Pin 32 | P54 — Port 5 bit 4 |
| Pin 33 | P55 — Port 5 bit 5 |
| Pin 34 | P56 — Port 5 bit 6 |
| Pin 35 | P57 — Port 5 bit 7 |
| Pin 36 | P60 — Port 6 bit 0 |
| Pin 37 | P61 — Port 6 bit 1 |
| Pin 38 | P62 — Port 6 bit 2 |
| Pin 39 | P63 — Port 6 bit 3 |
| Pin 40 | P64 — Port 6 bit 4 |
| Pin 41 | P65 — Port 6 bit 5 |
| Pin 42 | P66 — Port 6 bit 6 |
| Pin 43 | P67 — Port 6 bit 7 |
| Pin 44 | P70 — Port 7 bit 0 |
| Pin 45 | P71 — Port 7 bit 1 |
| Pin 46 | P72 — Port 7 bit 2 |
| Pin 47 | P73 — Port 7 bit 3 |
| Pin 48 | P74 — Port 7 bit 4 |
| Pin 49 | P75 — Port 7 bit 5 |
| Pin 50 | P76 — Port 7 bit 6 |
| Pin 51 | P77 — Port 7 bit 7 |
| Pin 52 | P80 — Port 8 bit 0 |
| Pin 53 | P81 — Port 8 bit 1 |
| Pin 54 | P82 — Port 8 bit 2 |
| Pin 55 | P83 — Port 8 bit 3 |
| Pin 56 | P84 — Port 8 bit 4 |
| Pin 57 | P85 — Port 8 bit 5 |
| Pin 58 | P86 — Port 8 bit 6 |
| Pin 59 | P87 — Port 8 bit 7 |
| Pin 60 | P90 — Port 9 bit 0 |
| Pin 61 | P91 — Port 9 bit 1 |
| Pin 62 | P92 — Port 9 bit 2 |
| Pin 63 | P93 — Port 9 bit 3 |
| Pin 64 | P94 — Port 9 bit 4 |
| Pin 65 | P95 — Port 9 bit 5 |
| Pin 66 | P96 — Port 9 bit 6 |
| Pin 67 | P97 — Port 9 bit 7 |
| Pin 68 | PA0 — Port A bit 0 |
| Pin 69 | PA1 — Port A bit 1 |
| Pin 70 | PA2 — Port A bit 2 |
| Pin 71 | PA3 — Port A bit 3 |
| Pin 72 | PA4 — Port A bit 4 |
| Pin 73 | PA5 — Port A bit 5 |
| Pin 74 | PA6 — Port A bit 6 |
| Pin 75 | PA7 — Port A bit 7 |
| Pin 76 | PB0 — Port B bit 0 |
| Pin 77 | PB1 — Port B bit 1 |
| Pin 78 | PB2 — Port B bit 2 |
| Pin 79 | PB3 — Port B bit 3 |
| Pin 80 | PB4 — Port B bit 4 |
| Pin 81 | PB5 — Port B bit 5 |
| Pin 82 | PB6 — Port B bit 6 |
| Pin 83 | PB7 — Port B bit 7 |
| Pin 84 | PC0 — Port C bit 0 |
| Pin 85 | PC1 — Port C bit 1 |
| Pin 86 | PC2 — Port C bit 2 |
| Pin 87 | PC3 — Port C bit 3 |
| Pin 88 | PC4 — Port C bit 4 |
| Pin 89 | PC5 — Port C bit 5 |
| Pin 90 | PC6 — Port C bit 6 |
| Pin 91 | PC7 — Port C bit 7 |
| Pin 92 | PD0 — Port D bit 0 |
| Pin 93 | PD1 — Port D bit 1 |
| Pin 94 | PD2 — Port D bit 2 |
| Pin 95 | PD3 — Port D bit 3 |
| Pin 96 | PD4 — Port D bit 4 |
| Pin 97 | PD5 — Port D bit 5 |
| Pin 98 | PD6 — Port D bit 6 |
| Pin 99 | PD7 — Port D bit 7 |
| Pin 100 | PE0 — Port E bit 0 |
| Pin 101 | PE1 — Port E bit 1 |
| Pin 102 | PE2 — Port E bit 2 |
| Pin 103 | PE3 — Port E bit 3 |
| Pin 104 | PE4 — Port E bit 4 |
| Pin 105 | PE5 — Port E bit 5 |
| Pin 106 | PE6 — Port E bit 6 |
| Pin 107 | PE7 — Port E bit 7 |
| Pin 108 | PF0 — Port F bit 0 |
| Pin 109 | PF1 — Port F bit 1 |
| Pin 110 | PF2 — Port F bit 2 |
| Pin 111 | PF3 — Port F bit 3 |
| Pin 112 | PF4 — Port F bit 4 |
| Pin 113 | PF5 — Port F bit 5 |
| Pin 114 | PF6 — Port F bit 6 |
| Pin 115 | PF7 — Port F bit 7 |
| Pin 116 | PG0 — Port G bit 0 |
| Pin 117 | PG1 — Port G bit 1 |
| Pin 118 | PG2 — Port G bit 2 |
| Pin 119 | PG3 — Port G bit 3 |
| Pin 120 | PG4 — Port G bit 4 |
| Pin 121 | PG5 — Port G bit 5 |
| Pin 122 | PG6 — Port G bit 6 |
| Pin 123 | PG7 — Port G bit 7 |
| Pin 124 | PH0 — Port H bit 0 |
| Pin 125 | PH1 — Port H bit 1 |
| Pin 126 | PH2 — Port H bit 2 |
| Pin 127 | PH3 — Port H bit 3 |
| Pin 128 | PH4 — Port H bit 4 |
| Pin 129 | PH5 — Port H bit 5 |
| Pin 130 | PH6 — Port H bit 6 |
| Pin 131 | PH7 — Port H bit 7 |
| Pin 132 | PJ0 — Port J bit 0 |
| Pin 133 | PJ1 — Port J bit 1 |
| Pin 134 | PJ2 — Port J bit 2 |
| Pin 135 | PJ3 — Port J bit 3 |
| Pin 136 | PJ4 — Port J bit 4 |
| Pin 137 | PJ5 — Port J bit 5 |
| Pin 138 | PJ6 — Port J bit 6 |
| Pin 139 | PJ7 — Port J bit 7 |
| Pin 140 | RESET — Reset input (active low) |
| Pin 141 | XTAL/P00 — Crystal oscillator / Port 0 bit 0 |
| Pin 142 | XTAL2/P01 — Crystal oscillator / Port 0 bit 1 |
| Pin 143 | MD — Mode pin (boot mode selection) |
| Pin 144 | VCC_USB — USB power pin |
Typical Applications
R5F56216BDFB#V0 is suitable for 6 applications: Industrial Ethernet Gateway, USB Human-Machine Interface (HMI), Building Automation Controller, CAN-Connected Sensor Hub, Point-of-Sale (POS) Terminal, Industrial IoT Edge Node.
Industrial Ethernet Gateway
The R5F56216BDFB#V0's integrated 10/100 Ethernet MAC and EDMAC controller pair with an external PHY to realize deterministic TCP/IP communication in factory-floor gateways. At 100 MHz and 165 DMIPS, the RX v1 core can sustain multi-protocol bridging between Modbus TCP, EtherNet/IP and PROFINET with room for application-layer processing. The 64 KB SRAM allows full socket buffering without dropping packets under burst load.
Recommended
USB Human-Machine Interface (HMI)
The integrated USB 2.0 Full-Speed Host/Function controller eliminates external glue logic in USB-connected HMIs. The 256 KB Flash runs USB HID, CDC, or vendor-class stacks with display-driver code, while the 12-bit ADC reads analog control inputs at up to 1 Msps. The 0.5 mm-pitch LFQFP package is suitable for hand-solderable prototypes and short-cycle industrial designs.
Recommended
Building Automation Controller
The R5F56216BDFB#V0 supports multiple UARTs, I2C buses and CAN 2.0B simultaneously, allowing a single MCU to interface with HVAC sensors, lighting controls, and security subsystems. The deep Sleep and Standby modes combined with the 10 KB data Flash for non-volatile parameter storage suit battery-backed building controllers. Integrated Ethernet provides BACnet/IP or KNX/IP uplink connectivity.
Recommended
CAN-Connected Sensor Hub
The R5F56216BDFB#V0's hardware CAN 2.0B controller with 32 mailbox slots enables robust CANopen and DeviceNet implementations. The 123 I/O pins allow direct connection to digital and analog sensor arrays, while the EXDMAC off-loads bulk ADC reads into SRAM without CPU intervention. The 2.7 V to 3.6 V supply range is compatible with industrial 3.3 V CAN transceivers.
Recommended
Point-of-Sale (POS) Terminal
The R5F56216BDFB#V0 balances security and connectivity needed in POS terminals. The hardware FPU accelerates financial cryptography primitives (AES, SHA, RSA partial) while the Ethernet MAC supports IP-based payment authorizers and the USB host connects to peripherals such as NFC readers. The 256 KB Flash accommodates boot, payment, and TLS libraries within a single image.
Recommended
Industrial IoT Edge Node
The R5F56216BDFB#V0 fits edge nodes that aggregate sensor data over RS-485 or CAN and forward via Ethernet or USB. The low-power Sleep modes (down to single-digit microamp range per the RX621 hardware manual) keep idle consumption low. The 64 KB SRAM handles TLS session buffers and MQTT message queuing without external memory, keeping the BOM compact.
Recommended
Recommended Products Summary
Engineering reference data for R5F56216BDFB#V0 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | R5F56217BDFB#V0 | R5F56218BDFB#V0 | R5F56216BDLE#U0 |
|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 144-LFQFP (20x20) | 144-LFQFP (20x20) - same | 144-LFQFP (20x20) - same | 144-TFLGA - different |
| Program Flash | 256 KB | 384 KB (+50%) | 512 KB (+100%) | 256 KB (same) |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB |
| Core Frequency | 100 MHz | 100 MHz | 100 MHz | 100 MHz |
| DMIPS | 165 DMIPS | 165 DMIPS | 165 DMIPS | 165 DMIPS |
| Ethernet MAC | 10/100 MAC + EDMAC | 10/100 MAC + EDMAC | 10/100 MAC + EDMAC | 10/100 MAC + EDMAC |
| USB | USB 2.0 FS Host/Function | USB 2.0 FS Host/Function | USB 2.0 FS Host/Function | USB 2.0 FS Host/Function |
Key Differentiators
- Flash density scaling within same package (vs R5F56218BDFB#V0)
- Footprint-reduced variant available (vs R5F56216BDLE#U0)
- Integrated Ethernet MAC with hardware EDMAC (vs PIC32MX575F512H-80I/MR (Site MPN, no integrated Ethernet))
Design Notes
Place a 0.1 uF X7R decoupling capacitor as close as possible to every VCC pin and to the AVCC pin; add a single 10 uF bulk cap on each power domain. The 0.5 mm pitch LFQFP is hand-rework-friendly but requires careful reflow profile control (JEDEC J-STD-020); verify the part MSL on the label before floor-life exposure.
The R5F56216BDFB#V0 requires a 2.7 V to 3.6 V single supply with VCL and USB_PVCC pins both decoupled. Recommended: use a 3.3 V LDO with at least 200 mA headroom (typical Ethernet and USB current consumption). For USB applications, route USBDP/USBDM as 90-ohm differential pair.
Estimated: at 100 MHz CPU and full peripheral block operation, the MCU consumes around 100 mA during active mode. Sleep modes drop to single-digit mA. The MODE pin must be pulled correctly during reset for boot mode selection; an open or floating MODE pin can prevent code execution. The Ethernet PHY needs an external 50 MHz reference unless sourced from the MCU's dedicated Ethernet clock output pin.
Compliance Information
RoHS compliant per Renesas product page. Not AEC-Q100 qualified; for automotive applications contact Renesas about RX63N/RX65N automotive-grade families. Halogen-free status not explicitly listed in the provided data; defaulting to unknown.
