Renesas R5F213J2CNNP#U0

Overview

R5F213J2CNNP from Renesas is an 8 KB flash, 1 KB RAM, R8C CPU core 8-bit MCU in a 36-pin HWQFN package (PWQN0036KA-B), operating at up to 20 MHz (VCC = 2.7–5.5 V), featuring 10-bit A/D converter (10 channels), dual 8-bit D/A outputs, LIN hardware module, and background operation (BGO) data flash for embedded control in consumer appliances.

For engineers reviewing the R5F213J2CNNP datasheet, R5F213J2CNNP pinout, R5F213J2CNNP application, or R5F213J2CNNP equivalent, key selection considerations include its 36-pin QFN footprint, integrated LIN transceiver support via UART0 + Timer RA, real-time clock (Timer RE), low-power stop mode (2.0 µA), and 1 KB × 4 data flash with BGO for firmware updates without halting execution.

Technical Context

The R5F213J2CNNP implements the R8C CPU core with 89 fundamental instructions, 16×16→32-bit hardware multiplier, and multiply-accumulate capability. It supports single-chip mode with 1 Mbyte address space and executes instructions in as little as 50 ns at 20 MHz.

Its peripheral set includes three UART/serial interfaces (UART0–2), I²C-bus/SSU shared channel, hardware LIN (using UART0 and Timer RA), 16-bit Timer RD with complementary PWM for three-phase motor control, and 10-bit A/D with sample-and-hold and sweep mode across 10 analog inputs.

Key Specifications

Pinout & Package

Package: 36-pin HWQFN (PWQN0036KA-B), 6 mm × 6 mm, 0.5 mm pitch, exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit MCU applications.

Compared with R5F213J2CNNP, the R5F213J4CNNP offers direct memory scalability within identical pinout and firmware compatibility, while the RL78/G13 provides architectural modernization, larger memory, and superior energy efficiency - making it suitable for new designs where legacy R8C toolchain constraints are not binding.

Availability

R5F213J2CNNP is available at Aetrix Electronics and suitable for home appliance control, audio front-panel interfaces, office equipment motor drives, and consumer IoT sensor hubs requiring stable component supply and long-term industrial availability.

Supply support for R5F213J2CNNP 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, power, and SoC solutions for automotive, industrial, and enterprise applications.

The R8C/3JC Group was designed for cost-sensitive, low-power embedded control in consumer electronics - emphasizing integration of LIN, RTC, A/D, and D/A functions in compact QFN packages without sacrificing real-time responsiveness.

FAQ

What is the maximum operating frequency and supply voltage range for the R5F213J2CNNP?

The R5F213J2CNNP operates at up to 20 MHz when supplied with 2.7–5.5 V, and supports reduced-frequency operation down to 5 MHz at 1.8 V minimum supply. Its high-speed on-chip oscillator can be adjusted in software, and external crystal inputs (XIN/XCIN) provide precise timing for real-time and communication tasks. The R5F213J2CNNP maintains full peripheral functionality across this voltage range, including A/D conversion linearity and D/A output stability.

Does the R5F213J2CNNP support hardware LIN communication, and how is it implemented?

Yes, the R5F213J2CNNP integrates a hardware LIN module that combines UART0 and Timer RA to implement ISO 9141-2 and LIN 2.x physical and data link layers. This eliminates software bit-banging overhead and ensures deterministic timing for LIN frame generation and synchronization. The R5F213J2CNNP uses dedicated SFRs (LINCR, LINCR2, LINST) for configuration and status, and supports automatic checksum calculation, header detection, and response timeout handling - all without CPU intervention.

How many A/D and D/A channels does the R5F213J2CNNP provide, and what are their resolutions?

The R5F213J2CNNP features a 10-bit successive-approximation A/D converter with 10 input channels (AN0–AN11, excluding AN2 and AN7), supporting sample-and-hold and automatic sweep mode. It also includes two independent 8-bit D/A converters (DA0 and DA1), each mapped to dedicated pins (P0_6 and P0_7). Both A/D and D/A share the VREF pin for reference voltage, and the A/D supports internal reference selection via IVREF1/IVREF3 inputs for comparator use cases.

What low-power modes are available on the R5F213J2CNNP, and what are their typical current draws?

The R5F213J2CNNP supports wait mode (3.5 µA at 3.0 V with 32 kHz XCIN clock) and stop mode (2.0 µA at 3.0 V), in addition to standard active operation (6.5 mA at 5.0 V, 20 MHz). Wake-up from both low-power modes is possible via external interrupts (INT0–INT3), key inputs (KI0–KI3), or A/D conversion completion. The R5F213J2CNNP retains RAM contents and register states in wait mode, and preserves only essential registers in stop mode - enabling rapid resumption of control tasks.

Is the R5F213J2CNNP pin-compatible with other members of the R8C/3JC Group, and what package does it use?

Yes, the R5F213J2CNNP uses the PWQN0036KA-B (36PJW-B) 36-pin HWQFN package and shares identical pinout and peripheral mapping with all R8C/3JC Group variants including R5F213J4CNNP, R5F213J5CNNP, and R5F213J6CNNP. This enables hardware reuse across memory variants - firmware and PCB layout remain unchanged when scaling ROM/RAM capacity. The R5F213J2CNNP's MODE, RESET, XIN/XOUT, and XCIN/XCOUT pins follow Renesas' standardized boot and clock configuration scheme.