Skip to main content
Renesas Electronics R5F51405BDFK#30 — Analog & Data Acquisition
Renesas Electronics

Renesas R5F51405BDFK#30 RX140 MCU, 48MHz, 128KB Flash

MPNR5F51405BDFK#30
End of Life

Renesas RX140 series, R5F51405BDFK#30, 32-Bit Single-Core MCU, 48MHz, 128KB Flash, 32K x 8 RAM, 8K x 8 EEPROM, 53 I/O, CANbus/I²C/SCI/SPI, 64-LQFP, -40°C to 85°C.

$3.7Ref. price · indicative, final on quote
R5F51405BDFK#30 datasheet
Packaging64-LQFP
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

R5F51405BDFK#30 Technical Specifications
ParameterValue
SeriesRX140
Mounting typeSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.8V ~ 5.5V
Operating temperature-40°C ~ 85°C (TA)
Speed48MHz
PackageTray
RAM size32K x 8
Core size32-Bit Single-Core
EEPROM size8K x 8
PeripheralsAES, Capacitive Touch, DMA, LVD, POR, PWM, Temp Sensor, TRNG, WDT
ConnectivityCANbus, I²C, SCI, SPI
Number of i (O)53
Core processorRXv2
Case64-LQFP
Data convertersA/D 15x12b; D/A 2x8b
Program memory size128KB (128K x 8)

Product details

Package and mounting

The Renesas R5F51405BDFK#30 is a 32-bit RX140-series microcontroller built around the RXv2 core running at 48 MHz.

Peripheral fit and I/O count

With 53 I/O lines and a peripheral set that includes AES encryption, capacitive touch sensing, DMA, a temperature sensor, and a true random number generator, this MCU targets applications that need both control and security — think HMI panels with touch overlays, CAN-connected sensor nodes, or industrial keypads. The connectivity block covers CANbus, I²C, SCI (UART), and SPI, so it can talk to most common serial peripherals without external bridge chips. The 15-channel 12-bit ADC and dual 8-bit DAC handle the analog front-end for current sensing or signal conditioning.

Temperature range and deployment environment

It is not automotive-qualified (no AEC-Q100 in the record), so it belongs on the factory floor, not under the hood.

Frequently asked questions

What is the closest functional equivalent to R5F51405BDFK#30?

The R5F51405BGFL#30 is a pin-compatible sibling in the same RX140 series with the same 48 MHz RXv2 core and 128 KB Flash, but it has 39 I/O instead of 53 and operates up to 105°C. For a higher-temperature variant with the same I/O count, the R5F51406AGFM#30 runs to 105°C but omits the AES and TRNG peripherals.

Is R5F51405BDFK#30 compatible with existing RX140 firmware?

Yes, the R5F51405BDFK#30 is a member of the RX140 series and uses the same RXv2 core. Firmware written for other RX140 devices with the same Flash and RAM footprint should port directly, though peripheral and I/O mapping differences (e.g., 53 I/O vs 39 on some siblings) may require pin-configuration changes.