Renesas R5F51305BDFP#10

Overview

R5F51305BDFP#10 from Renesas Electronics is a 32-bit RX CPU-based microcontroller in the RX130 Group, operating at up to 32 MHz (50 DMIPS), featuring 128 KB on-chip flash, 16 KB SRAM, 8 KB data flash, 12-bit A/D converter (17 channels), two 8-bit D/A channels, capacitive touch sensing (36 channels), and IEC60730-compliant safety functions. It targets low-power industrial HMI and consumer appliance control where integrated analog peripherals, real-time responsiveness, and functional safety are required.

For engineers reviewing the R5F51305BDFP#10 datasheet, R5F51305BDFP#10 pinout, R5F51305BDFP#10 application, or R5F51305BDFP#10 equivalent, key selection considerations include its 100-pin LFQFP package, 1.8–5.5 V single-supply operation, software standby current of 0.37 µA, 4.8 µs wake-up time, and support for event-driven peripheral coordination via ELC without CPU intervention.

Technical Context

The R5F51305BDFP#10 implements the 32-bit RXv1 CPU core with CISC Harvard architecture, 5-stage pipeline, and variable-length instructions-enabling ultra-compact code and single-cycle 32×32-bit multiplication. Its clock system integrates high-speed (32 MHz ±1%) and low-speed (15 kHz) on-chip oscillators, PLL, sub-clock (32.768 kHz), and CAC for frequency accuracy monitoring.

Peripheral integration centers on deterministic real-time control: MTU2 provides six 16-bit timer channels with complementary PWM, input capture, and phase counting; ELC enables direct inter-module triggering (e.g., timer → A/D start); and DTC supports four transfer modes with chain capability. The device includes dedicated hardware for IEC60730 self-test (RAM DOC, A/D disconnection detection, IWDT diagnostics).

Key Specifications

Pinout & Package

Package: PLQP0100KB-B - 100-pin Low-Profile Quad Flat Package, 14 mm × 14 mm, 0.5 mm pitch, exposed pad.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R5F51305ADFP#30, R5F51305BDFP#10 offers identical functionality with updated manufacturing revision; compared with R5F51306BDFP#30, it trades memory capacity for cost-sensitive implementations where 128 KB flash and 16 KB SRAM suffice for core control logic and touch UI.

Availability

R5F51305BDFP#10 is available at Aetrix Electronics and suitable for home appliance control panels, industrial HMI terminals, smart thermostats, and energy monitoring gateways requiring stable component supply, long-term lifecycle support, and IEC60730-compliant design assurance.

Supply support for R5F51305BDFP#10 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX130 Group is designed for cost-sensitive, low-power embedded applications demanding rich analog integration, capacitive touch, functional safety, and real-time determinism-targeting appliances, industrial HMIs, and building automation.

FAQ

What is the maximum operating frequency and CPU performance of the R5F51305BDFP#10?

The R5F51305BDFP#10 operates at a maximum frequency of 32 MHz and delivers 50 DMIPS of processing performance using the 32-bit RXv1 CPU core. Its architecture supports single-cycle 32×32-bit multiplication, 64-bit accumulator results, and fast interrupt response-making it suitable for real-time control tasks in appliance and industrial applications. The R5F51305BDFP#10 achieves this performance across its full 1.8–5.5 V supply range with no wait states on flash access.

Does the R5F51305BDFP#10 support IEC60730 functional safety compliance?

Yes, the R5F51305BDFP#10 includes hardware-assisted IEC60730 Class B compliance features: A/D converter self-diagnostic and analog input disconnection detection, clock frequency accuracy measurement (CAC), independent watchdog timer (IWDT) with dedicated oscillator, RAM test assistance via Data Operation Circuit (DOC), and reset supervision with multiple voltage detection levels. These features are documented in the R01DS0273EJ0300 datasheet and enable certified safety firmware implementation without external components.

What package type and pin count does the R5F51305BDFP#10 use?

The R5F51305BDFP#10 uses the PLQP0100KB-B package: a 100-pin Low-Profile Quad Flat Package measuring 14 mm × 14 mm with 0.5 mm pitch and an exposed thermal pad. This package supports all RX130 Group peripherals-including 17 A/D channels, 36 CTSU touch pins, six MTU2 timer channels, and seven SCI interfaces-as confirmed in Table 1.2 of the R01DS0273EJ0300 datasheet.

How much on-chip memory does the R5F51305BDFP#10 include?

The R5F51305BDFP#10 integrates 128 KB of on-chip flash memory (with no wait states at 32 MHz), 16 KB of SRAM (zero-wait-state access), and 8 KB of data flash rated for 1,000,000 program/erase cycles. The flash supports 1.8 V programming and stores both instructions and operands; the data flash enables reliable background firmware parameter storage and field updates via BGO functionality.

What low-power capabilities does the R5F51305BDFP#10 offer for battery-operated devices?

The R5F51305BDFP#10 supports three low-power modes, including software standby with only 0.37 µA typical current draw and 4.8 µs wake-up time. It includes a dedicated Low Power Timer (LPT) that runs from the 32.768 kHz sub-clock or IWDT oscillator during standby, enabling periodic wake-up events without CPU involvement. Its 1.8–5.5 V operation and dynamic voltage/frequency scaling further optimize energy efficiency in portable and energy-harvested applications.