Renesas R0E521237CFK00

Overview

R0E521237CFK00 from Renesas Electronics is a dedicated converter board enabling debug and on-board evaluation of R8C/20, 21, 22, and 23 Group MCUs in 48-pin 0.5-mm-pitch LQFP (PLQP0048KB-A) packages. It interfaces the R0E521000EPB00 emulation probe or R0E521000CPE00 compact emulator with user systems via YQPACK048SD/NQPACK048SD socket adapters and supports 50 guaranteed connector mating cycles with emulators and 100 with sockets.

For engineers reviewing the R0E521237CFK00 datasheet, R0E521237CFK00 pinout, R0E521237CFK00 application, or R0E521237CFK00 equivalent, this board serves as a mechanical and electrical interface bridge-not an IC-requiring attention to LQFP foot pattern alignment, FFC cable handling, socket stacking sequence, and YQ-GUIDE fixation per Renesas' documented connection procedure.

Technical Context

The R0E521237CFK00 functions exclusively as a passive interconnect solution between Renesas R8C-series emulators and target PCBs. It incorporates a 150 mm FFC cable and mates with Tokyo Eletech's YQPACK048SD and NQPACK048SD socket modules, supporting both debugging (via emulator-to-socket path) and on-board evaluation (via MCU-to-HQPACK048SD path).

No active circuitry, voltage translation, signal conditioning, or logic is present. Its design centers on mechanical compatibility with PLQP0048KB-A footprint, precise 0.5-mm pitch alignment, and repeatable insertion/removal durability-verified for 50 cycles with emulators and 100 cycles with YQPACK048SD.

Key Specifications

Availability

R0E521237CFK00 is available at Aetrix Electronics and suitable for R8C microcontroller development, embedded firmware debugging, and production-ready board validation requiring stable component supply, consistent socket interface geometry, and traceable Renesas tooling compliance.

Supply support for R0E521237CFK00 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 manufacturer formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and consumer applications.

The R0E521237CFK00 belongs to Renesas' legacy R8C/Tiny Series development tools portfolio, engineered specifically to enable reliable, low-risk debug and evaluation of 48-pin LQFP-packaged R8C/20–23 Group MCUs in lab and pre-production environments.

FAQ

What is the primary function of the R0E521237CFK00?

The R0E521237CFK00 is a passive converter board that bridges Renesas R0E521000EPB00 or R0E521000CPE00 emulators to target PCBs hosting R8C/20–23 Group MCUs in 48-pin 0.5-mm-pitch LQFP packages. It contains no active circuitry-its role is strictly mechanical and electrical interconnection using a fixed-length FFC cable and standardized socket interfaces.

Which MCU packages does the R0E521237CFK00 support?

The R0E521237CFK00 supports only the PLQP0048KB-A package (formerly 48P6Q-A), a 48-pin LQFP with 0.5-mm lead pitch. It is not compatible with other pin counts, pitches, or package types-including QFP, TQFP, or non-Renesas LQFP variants-even if pin count matches-due to strict footprint and socket alignment requirements.

Can the R0E521237CFK00 be used without Tokyo Eletech socket modules?

No. The R0E521237CFK00 requires YQPACK048SD and NQPACK048SD socket modules (supplied with the board) and four YQ-GUIDE fixtures to function as intended. These components are mechanically interdependent: the board mates only with YQPACK048SD, which stacks onto NQPACK048SD mounted on the user PCB. Substitution invalidates Renesas' documented usage and reliability guarantees.

What is the rated durability of the R0E521237CFK00's connectors?

The R0E521237CFK00 is rated for 50 guaranteed mating cycles between its board edge connector and either R0E521000EPB00 or R0E521000CPE00 emulators, and 100 guaranteed cycles between its FFC header and YQPACK048SD socket. Exceeding these limits may degrade contact integrity or cause FFC fatigue failure.

Is the R0E521237CFK00 suitable for production programming or only development?

The R0E521237CFK00 is explicitly designated for development-stage use-debugging and on-board evaluation-as stated in its User's Manual. It is not qualified or supported for in-system programming (ISP) in high-volume manufacturing. Production programming requires dedicated Renesas flash programmers (e.g., PG-FP5) or bootloader-based methods-not emulator-based converter boards like the R0E521237CFK00.