Renesas R5F564MJCDLJ#21

Overview

R5F564MJCDLJ#21 from Renesas Electronics is a 32-bit RXv2 microcontroller operating at up to 120 MHz, delivering 240 DMIPS with integrated single-precision IEEE-754 FPU, 4 MB on-chip code flash, 512 KB SRAM, and IEEE 1588-compliant dual Ethernet MAC - designed for industrial networking gateways requiring deterministic real-time control, secure firmware updates, and multi-protocol connectivity.

For engineers reviewing the R5F564MJCDLJ#21 datasheet, R5F564MJCDLJ#21 pinout, R5F564MJCDLJ#21 application, or R5F564MJCDLJ#21 equivalent, this MCU supports simultaneous CAN FD (via external transceiver), full-speed USB 2.0 with battery charging, SD host interface, quad SPI, and hardware-accelerated AES/SHA encryption - critical for IEC 60730 Class B safety-certified edge controllers and time-sensitive networking (TSN) edge nodes.

Technical Context

The R5F564MJCDLJ#21 implements the RXv2 CPU core with CISC Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code density. It integrates dual Ethernet MACs with IEEE 1588 PTP timestamping via EPTPC and dedicated EDMAC channels - supporting precise time synchronization in industrial automation and power substation controllers.

Its memory subsystem includes 4 MB zero-wait-state code flash, 64 KB reprogrammable data flash (100,000 erase/write cycles), 512 KB SRAM (no wait states), and 32 KB ECC-protected RAM for fault-tolerant operation. Clocking uses PLL-synthesized 120 MHz ICLK with independent PCLKA/PCLKB domains enabling concurrent high-speed peripheral operation (e.g., Ethernet at 120 MHz, ADC at 60 MHz).

Key Specifications

Pinout & Package

Package: PLQP0176KB-A (176-pin LFBGA, 24 × 24 mm, 0.5 mm pitch). Pin count and I/O configuration match RX64M Group specification for 176-pin variants: 127 general-purpose I/O pins with 5-V tolerance on 19 pins, programmable pull-up, open-drain capability, and event-link controller (ELC) routing.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit industrial MCU applications.

Compared with R5F564MJCDLJ#21, the R5F566TEADFP#30 reduces feature set for cost-sensitive PLC I/O modules, while the R7FA6M2AF3CFB#AA0 shifts focus to computational intensity over network concurrency - neither matches the unique combination of dual IEEE 1588 Ethernet, USB battery charging, and 4 MB flash in the R5F564MJCDLJ#21.

Availability

R5F564MJCDLJ#21 is available at Aetrix Electronics and suitable for industrial networking gateways, smart energy meters, programmable logic controllers (PLCs), and building automation controllers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F564MJCDLJ#21 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power management ICs for industrial, automotive, and IoT applications.

The RX64M Group, including R5F564MJCDLJ#21, was designed for high-performance industrial connectivity - integrating dual Ethernet, CAN, USB, and security accelerators to replace multi-chip solutions in edge gateways and safety-certified controllers.

FAQ

What is the maximum operating frequency and CPU performance of the R5F564MJCDLJ#21?

The R5F564MJCDLJ#21 operates at a maximum system clock frequency of 120 MHz using the RXv2 CPU core, achieving 240 DMIPS performance. Its single-precision IEEE-754 floating-point unit (FPU) and dual multiply-accumulate units enable efficient signal processing and real-time control calculations. This performance level is validated in Renesas' R01DS0173EJ0120 datasheet Rev.1.20, page 1.

Does the R5F564MJCDLJ#21 support IEEE 1588 Precision Time Protocol (PTP)?

Yes, the R5F564MJCDLJ#21 includes a dedicated IEEE 1588-compliant PTP controller (EPTPC) linked to both Ethernet MACs, enabling hardware timestamping of Ethernet frames with ±50 ns accuracy. This capability is confirmed in the "Communication function" section of the R01DS0173EJ0120 datasheet (page 7), and is essential for time-sensitive networking in industrial automation.

What are the memory resources available on the R5F564MJCDLJ#21?

The R5F564MJCDLJ#21 integrates 4 MB of zero-wait-state on-chip code flash memory, 64 KB of reprogrammable data flash (rated for 100,000 erase/write cycles), 512 KB of high-speed SRAM, 32 KB of ECC-protected RAM (SEC-DED), and 8 KB of standby RAM. These specifications are detailed in Table 1.1 of the R01DS0173EJ0120 datasheet (pages 2–3) and support robust firmware update mechanisms and safety-critical data retention.

Which communication interfaces does the R5F564MJCDLJ#21 support for industrial fieldbus connectivity?

The R5F564MJCDLJ#21 supports three ISO 11898-1-compliant CAN modules (32 mailboxes each), nine SCI/SCIg serial interfaces (including LIN and smart-card modes), four SCIFA UARTs with 16-byte FIFOs, two I²C buses (up to 1 Mbps), and a quad SPI interface. These are documented in the "Communication function" section of the R01DS0173EJ0120 datasheet (pages 7–8), enabling seamless integration with Modbus, CANopen, and proprietary fieldbus protocols.

Is the R5F564MJCDLJ#21 qualified for industrial temperature range and safety standards?

Yes, the R5F564MJCDLJ#21 is rated for the industrial temperature range of –40°C to +85°C (D-version) and includes hardware features for IEC 60730 Class B compliance: oscillation-stop detection, hardware CRC, A/D self-diagnostic, register write protection, and independent watchdog timer (IWDTa). These capabilities are explicitly listed in the "Useful functions for IEC60730 compliance" section of the R01DS0173EJ0120 datasheet (page 1).