Renesas R5F2134CWKFP#U0

Overview

R5F2134CWKFP#U0 from Renesas Electronics is a 16-bit R8C CPU core MCU with 128 KB program flash, 10 KB data flash (4 × 1 KB blocks), 10 KB RAM, and integrated CAN 2.0B module (16 mailboxes, ISO 11898-1 compliant). It operates at up to 20 MHz (50 ns min instruction time) across −40°C to +125°C, targeting automotive LAN and industrial FA control nodes requiring real-time I/O, PWM, and robust serial communication.

For engineers reviewing the R5F2134CWKFP#U0 datasheet, R5F2134CWKFP#U0 pinout, R5F2134CWKFP#U0 application, or R5F2134CWKFP#U0 equivalent, this page delivers verified specifications, package mapping, functional pin roles, automotive-grade timing peripherals (Timer RD dual 16-bit PWM with three-phase support), LIN hardware interface, and confirmed drop-in alternatives for CAN-enabled embedded control designs.

Technical Context

The R5F2134CWKFP#U0 implements the R8C CPU core with 89 fundamental instructions, 16×16→32-bit multiplier, and multiply-accumulate capability-enabling deterministic motor control math within tight interrupt latency. Its memory architecture includes background operation (BGO) for concurrent data flash programming during execution, critical for firmware updates in running systems.

Timing subsystems include dual high-resolution 16-bit timers (Timer RD ×2) supporting reset-synchronous and complementary PWM modes for three-phase inverter drive, plus hardware LIN transceiver co-located on UART0 and Timer RA. The CAN module integrates full mailbox arbitration and error handling without CPU intervention.

Key Specifications

Pinout & Package

48-pin LQFP (PLQP0048KB-A), 7 mm × 7 mm body, 0.5 mm pitch. Pin functions are configurable via register settings; shared pins support alternate peripheral assignments per Table 1.13–1.14 of R01DS0012EJ0110 Rev.1.10.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F2134CWKFP#U0, R5F2134CXKFP trades data flash for identical CAN performance and temperature range, while R5F21348WKFP reduces memory resources but retains full CAN, LIN, and PWM functionality - enabling scalable platform design across vehicle domains.

Availability

R5F2134CWKFP#U0 is available at Aetrix Electronics and suitable for automotive body control modules, industrial motor drives, factory automation I/O nodes, and off-highway telematics gateways requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for R5F2134CWKFP#U0 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 is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT markets.

The R8C/34W Group, including R5F2134CWKFP#U0, was engineered for automotive LAN and factory automation applications demanding integrated CAN, LIN, high-resolution PWM, and extended-temperature reliability - delivering single-chip control without external protocol bridges.

FAQ

What is the maximum operating frequency and voltage range for the R5F2134CWKFP#U0?

The R5F2134CWKFP#U0 operates at a maximum frequency of 20 MHz with a minimum instruction execution time of 50 ns. Its supply voltage range is 2.7 V to 5.5 V, and it is rated for ambient temperatures from −40°C to +125°C (K version), making it suitable for under-hood automotive and industrial environments where thermal and electrical stress are significant. This specification is confirmed in Tables 1.1 and 1.2 of the R01DS0012EJ0110 datasheet.

Does the R5F2134CWKFP#U0 support background operation (BGO) for data flash writes?

Yes, the R5F2134CWKFP#U0 supports background operation (BGO) for its 10 KB data flash (organized as four 1 KB blocks). This allows the CPU to execute application code from program flash while simultaneously erasing or programming data flash - essential for over-the-air firmware updates and runtime parameter logging without system interruption. This capability is explicitly documented in Table 1.2 and Section 1.1 of the R01DS0012EJ0110 datasheet.

How many CAN mailboxes does the R5F2134CWKFP#U0 provide, and what standard does it comply with?

The R5F2134CWKFP#U0 integrates a single-channel CAN module with 16 dedicated mailboxes and full compliance with ISO 11898-1 (Classical CAN 2.0B). Each mailbox supports individual ID masking, priority-based transmission, and automatic retransmission on error - enabling robust, deterministic messaging in automotive networks. This is specified in Table 1.2 under "CAN Module" and confirmed in Figure 1.5's block diagram.

What peripheral timers are available on the R5F2134CWKFP#U0 for motor control applications?

The R5F2134CWKFP#U0 includes Timer RD ×2 - dual independent 16-bit timers each with four capture/compare registers and support for reset-synchronous PWM, complementary PWM, and three-phase waveform generation (6-pin output). These timers directly enable precise gate drive signal generation for 3-phase inverters without CPU overhead. Additional timers (RA, RB, RC, RE) provide auxiliary timing, event counting, and pulse-width measurement - all detailed in Tables 1.1–1.2.

Is hardware LIN functionality integrated into the R5F2134CWKFP#U0, and how is it implemented?

Yes, the R5F2134CWKFP#U0 includes a hardware LIN module implemented via dedicated logic linking UART0 and Timer RA - eliminating software bit-banging. This configuration supports LIN 2.0/2.1 physical layer timing, checksum generation, and frame synchronization in master/slave roles. The implementation is confirmed in Table 1.2 ("LIN Module: Hardware LIN: 1 (timer RA, UART0)") and Figure 1.5's block diagram.