Renesas R5F2136CSNFA#YW

Overview

R5F2136CSNFA#YW from Renesas Electronics is a 16-bit R8C/36T-A Group microcontroller featuring the R8C CPU core, 128 KB flash program ROM, 10 KB RAM, and integrated touch sensor control unit (TSCU) supporting 28 electrostatic capacitive touch channels. It operates at up to 20 MHz (2.7–5.5 V) or 5 MHz (1.8–5.5 V), includes 10-bit × 12-channel ADC, hardware LIN module, UART0/UART2/SSU/I²C serial interfaces, and on-chip data flash with background operation (BGO). It targets embedded control in consumer appliances with low EMI/EMS design.

For engineers reviewing the R5F2136CSNFA#YW datasheet, R5F2136CSNFA#YW pinout, R5F2136CSNFA#YW application, or R5F2136CSNFA#YW equivalent, key selection criteria include its 64-pin LQFP package (PLQP0064GA-A), -40°C to +85°C industrial temperature grade (D version), integrated TSCU for self-capacitive touch sensing, BGO-enabled data flash for firmware updates during runtime, and hardware LIN support using UART0_0 or UART0_1.

Technical Context

The R5F2136CSNFA#YW implements the R8C CPU core with 89 fundamental instructions, 1 Mbyte address space, and 16×16→32-bit multiplier with MAC capability. Its clock system integrates four independent sources: XIN/XOUT crystal oscillator, XCIN/XCOUT low-power crystal oscillator, high-speed on-chip oscillator (adjustable), and low-speed on-chip oscillator - all selectable via software-controlled frequency dividers (÷1, ÷2, ÷4, ÷8, ÷16).

Peripheral integration includes Timer RJ_0 (16-bit periodic/event counter), Timer RB2_0 (16-bit PWM/one-shot), Timer RC_0 (16-bit with 4 capture/compare registers and 3-PWM output), 8-bit Timer RE2 (real-time clock mode), DTC (1 channel, 27 activation sources), ELC (30 event sources × 10 operation types), and CRC-CCITT/CRC-16 calculators. Voltage detection supports three configurable thresholds with power-on reset.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (PLQP0064GA-A), 0.8 mm pin pitch, 14 mm × 14 mm body size, exposed pad not specified.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F2136ASDFA#VW and R5F21368SDFA#VW, the R5F2136CSNFA#YW provides maximum on-chip memory headroom for complex touch algorithms, secure boot code, and field-upgradable parameters - critical for premium appliances requiring long-term feature expansion.

Availability

R5F2136CSNFA#YW is available at Aetrix Electronics and suitable for home appliance control panels, industrial HMIs, audio equipment front panels, and smart power outlets requiring stable component supply across extended production lifecycles.

Supply support for R5F2136CSNFA#YW 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 delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The R8C/36T-A Group is designed for cost-sensitive, low-power embedded control applications requiring integrated touch sensing, robust serial communication, and industrial-grade reliability in consumer and industrial equipment.

FAQ

What is the operating temperature range of the R5F2136CSNFA#YW?

The R5F2136CSNFA#YW is the D-version part, rated for an operating ambient temperature range of -40°C to +85°C. This industrial-grade specification ensures reliable operation in demanding environments such as kitchen appliances, HVAC systems, and factory-floor HMIs where thermal stress is significant. The datasheet confirms this rating in Table 1.2 and Figure 1.1's part number structure.

Does the R5F2136CSNFA#YW support background operation for data flash writes?

Yes, the R5F2136CSNFA#YW supports Background Operation (BGO) for its on-chip data flash (1 KB × 4 blocks). This allows the CPU to execute application code while erasing or programming data flash memory - essential for seamless firmware updates or parameter logging without system interruption. BGO functionality is explicitly documented in Section 1.1 and Table 1.2 of the datasheet.

How many touch sensing channels does the R5F2136CSNFA#YW support?

The R5F2136CSNFA#YW integrates a Touch Sensor Control Unit (TSCU) supporting up to 28 electrostatic capacitive touch detection channels. These are implemented across dedicated pins (CHxA0, CHxA1, CHxB, CHxC) and general-purpose I/O pins (CH00–CH08, CH10, CH11, CH16–CH25, CH27, CH28, CH31–CH35), as specified in Table 1.2 and Section 1.1.1 of the datasheet.

Which serial communication protocols are natively supported by the R5F2136CSNFA#YW?

The R5F2136CSNFA#YW natively supports UART (2 channels on UART0, 1 on UART2), I²C (via UART2 or SSU_0), synchronous serial I/O (SSU), and hardware LIN (HW-LIN_0). UART2 explicitly includes I²C-bus mode, and SSU_0 is functionally identical to I2C_0 per Table 1.2. No external transceivers or protocol converters are required for these interfaces.

What is the package type and pin count of the R5F2136CSNFA#YW?

The R5F2136CSNFA#YW uses a 64-pin LQFP package with code PLQP0064GA-A (0.8 mm pin pitch, 14 mm × 14 mm body size), as confirmed in Table 1.3 and Section 1.2 of the datasheet. This differs from the PLQP0064KB-A variant (0.5 mm pitch, 10 mm × 10 mm) used in N-version parts; FA suffix denotes the GA-A package.