Renesas R5F2135CMNFP#X4

Overview

R5F2135CMNFP#X4 from Renesas is a 16-bit R8C CPU core microcontroller with 128 KB flash program ROM, 10 KB RAM, and 4 KB data flash (1 KB × 4 blocks) supporting background operation (BGO). It operates at up to 20 MHz (VCC = 2.7–5.5 V), integrates dual 10-bit A/D converters (12 channels), dual 8-bit D/A converters, LIN hardware module, and six timer units including complementary PWM-capable Timer RD for motor control. It targets embedded control in consumer audio and office equipment.

For engineers reviewing the R5F2135CMNFP#X4 datasheet, R5F2135CMNFP#X4 pinout, R5F2135CMNFP#X4 application, or R5F2135CMNFP#X4 equivalent, key selection criteria include its 52-pin LQFP package, -20°C to +85°C operating range (N version), integrated LIN transceiver support via UART0 and Timer RA, low-power stop mode (2.0 µA), and on-chip debug capability with flash rewrite.

Technical Context

The R5F2135CMNFP#X4 implements the R8C CPU core with 89 fundamental instructions, 16×16→32-bit multiplier, and multiply-accumulate capability. Its memory map spans 1 Mbyte (00000h–FFFFFh), with fixed interrupt vector table at 0FFDCh–0FFFFh and data flash at 03000h–03FFFh.

It features four clock sources - XIN (up to 20 MHz), XCIN (32 kHz), high-speed on-chip oscillator (adjustable), and low-speed on-chip oscillator - with selectable frequency dividers (1/2/4/8/16) and oscillation stop detection. Peripheral integration includes UART0/1/2 (with I²C mode), SSU, LIN module, watchdog timer, DTC, and voltage detection circuit with three configurable levels.

Key Specifications

Pinout & Package

Package: 52-pin LQFP (PLQP0052JA-A), 10 mm × 10 mm, 0.65 mm pitch, surface-mount. Pin 1 marked by corner notch; thermal pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F2135AMNFP and R5F2135CMDFP, the R5F2135CMNFP#X4 offers the largest on-chip memory in the N-version lineup while maintaining full peripheral compatibility and identical pinout - making it optimal for feature-rich consumer designs requiring field-upgradable firmware without industrial-grade thermal margins.

Availability

R5F2135CMNFP#X4 is available at Aetrix Electronics and suitable for audio signal processing, office equipment motor control, consumer appliance UI management, and industrial sensor hub applications requiring stable component supply across production lifecycles.

Supply support for R5F2135CMNFP#X4 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 R8C/35M Group, including R5F2135CMNFP#X4, was designed for cost-sensitive, low-power embedded control in consumer electronics - emphasizing integration of motor control peripherals, analog interfaces, and communication protocols like LIN and I²C.

FAQ

What is the maximum operating frequency and supply voltage range for the R5F2135CMNFP#X4?

The R5F2135CMNFP#X4 supports a maximum operating frequency of 20 MHz at VCC = 2.7–5.5 V, and 5 MHz at VCC = 1.8–5.5 V. Its wide voltage range enables direct compatibility with both 3.3 V and 5 V system rails without level-shifting, simplifying power design in mixed-voltage consumer products.

Does the R5F2135CMNFP#X4 support hardware LIN communication, and how is it implemented?

Yes, the R5F2135CMNFP#X4 integrates a hardware LIN module using UART0 and Timer RA to generate accurate baud rates and handle LIN frame formatting. This eliminates the need for external LIN transceivers in slave-node applications and reduces BOM cost and PCB area versus software-based LIN stacks.

How many A/D and D/A channels does the R5F2135CMNFP#X4 include, and what are their resolutions?

The R5F2135CMNFP#X4 includes a 10-bit A/D converter with 12 input channels (AN0–AN11) and two independent 8-bit D/A converters (DA0 and DA1). The A/D supports sample-and-hold and sweep mode for synchronized multi-channel acquisition, while the D/A outputs provide calibrated analog biasing for sensors or audio stages.

What low-power modes are available on the R5F2135CMNFP#X4, and what are their typical current draws?

The R5F2135CMNFP#X4 offers wait mode (3.5 µA @ 3.0 V, f(XCIN) = 32 kHz) and stop mode (2.0 µA @ 3.0 V), both retaining RAM content and supporting wake-up via external interrupt or RTC alarm. These modes enable multi-year battery life in standby applications such as remote controls and smart appliance displays.

Is on-chip debug supported for the R5F2135CMNFP#X4, and what capabilities does it provide?

Yes, the R5F2135CMNFP#X4 includes an on-chip debug interface supporting breakpoints, single-stepping, register inspection, and flash memory programming/erasure during development. This eliminates the need for external emulators and accelerates firmware validation cycles for audio, motor, and sensor applications.