Renesas R5F36406CDFB#30

Overview

R5F36406CDFB#30 from Renesas Electronics is a 16-bit M16C/60 Series microcontroller with 128 KB program ROM, 12 KB RAM, and 4 KB × 2 data flash, operating at up to 25 MHz (40 ns min instruction time) across -40°C to +85°C. It integrates UART, I²C, CEC, 26-channel 10-bit A/D, dual 8-bit D/A, three-phase motor control timers, and real-time clock - deployed in industrial HMI, audio subsystems, and embedded appliance control.

For engineers reviewing the R5F36406CDFB#30 datasheet, R5F36406CDFB#30 pinout, R5F36406CDFB#30 application, or R5F36406CDFB#30 equivalent, key selection criteria include its LQFP-100 package, dual power supply (VCC1/VCC2), 100-pin multiplexed/separate bus interface, and CEC compliance for HDMI-adjacent consumer electronics designs.

Technical Context

The R5F36406CDFB#30 implements the M16C/60 CPU core with 91 basic instructions, 16×16→32-bit multiplier, and 20-bit address space expandable to 4 MB via memory area expansion. Its peripheral set includes six UART channels (UART0–2, UART5–7), multi-master I²C-bus, two remote control signal receivers, and dedicated three-phase inverter control logic using Timer A1/A2/A4 and Timer B2 with on-chip dead-time generation.

It supports four operating modes (single-chip, memory expansion, microprocessor, and wait/stop power-saving), voltage detection at three points, and PLL-based clock synthesis with main/sub clocks plus 125 kHz on-chip oscillator. Real-time clock functionality operates independently with seconds/minutes/hours/days-of-week counting.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (PLQP0100KB-A / 100P6Q-A), 14 mm × 14 mm × 1.4 mm body, 0.5 mm pitch, exposed pad not specified. Dual power domains: VCC1 (core/analog/peripherals) and VCC2 (external bus I/O).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R5F36406CDFB#30, the R5F36406CNFB#30 offers identical functionality at lower cost but sacrifices operation below -20°C, while the R5F3640ECDFB#30 provides scalable memory headroom for evolving firmware without changing PCB layout or peripheral integration.

Availability

R5F36406CDFB#30 is available at Aetrix Electronics and suitable for industrial HMI, consumer audio subsystems, and home appliance motor control requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F36406CDFB#30 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 M16C/64C Group targets cost-sensitive, high-reliability embedded applications requiring rich analog integration, motor control acceleration, and HDMI-adjacent features like CEC - designed specifically for consumer electronics and industrial equipment where legacy code compatibility and long-term supply stability are critical.

FAQ

What is the maximum operating frequency and corresponding instruction timing for R5F36406CDFB#30?

The R5F36406CDFB#30 operates at up to 25 MHz with a minimum instruction execution time of 40.0 ns under conditions of VCC1 = VCC2 = 2.7–5.5 V. This timing is guaranteed across its full -40°C to +85°C operating temperature range and applies to all 91 basic instructions of the M16C/60 core architecture.

Does R5F36406CDFB#30 support HDMI CEC functionality, and how is it implemented?

Yes, R5F36406CDFB#30 includes a dedicated CEC function compliant with HDMI CEC standards. It implements transmit/receive capability, arbitration loss detection, and automatic ACK output on the P8_5 pin, operating at 32 kHz. The CEC block is hardware-accelerated and requires no software bit-banging, ensuring deterministic timing for HDMI-CEC command handling.

What are the memory configuration details for R5F36406CDFB#30?

R5F36406CDFB#30 contains 128 KB of program ROM 1, 12 KB of RAM, and 8 KB of data flash (organized as two 4 KB blocks). Program ROM 2 and additional data flash are not allocated in this variant. All memory is on-chip flash, supporting 1,000 program/erase cycles for ROM and 10,000 for data flash.

How does the dual power supply (VCC1/VCC2) architecture benefit system design with R5F36406CDFB#30?

The R5F36406CDFB#30 separates VCC1 (core, analog, and most peripherals) from VCC2 (external bus I/O), allowing independent voltage scaling - for example, 3.3 V core operation with 5 V external memory interfacing. This eliminates level shifters in mixed-voltage systems and improves noise isolation between sensitive analog sections and noisy bus signals.

Can R5F36406CDFB#30 perform three-phase motor control without external gate drivers?

R5F36406CDFB#30 provides hardware timer coordination (using TA1/TA2/TA4/TB2) and on-chip dead-time generation for three-phase inverter control, but it does not integrate high-current gate drivers. It outputs logic-level U/V/W phase signals and requires external gate driver ICs or discrete MOSFET drivers to interface with power stages - a standard architecture for scalable motor control designs.