Renesas R5F2136CSNFA#V0

Overview

R5F2136CSNFA#V0 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 integrates a 28-channel electrostatic capacitive touch sensor control unit (TSCU), 10-bit × 12-channel A/D converter, hardware LIN module, and dual UART + I²C/SSU serial interfaces. Designed for low-power consumer appliance control, it operates at up to 20 MHz (2.7–5.5 V) or 5 MHz (1.8–5.5 V).

For engineers reviewing the R5F2136CSNFA#V0 datasheet, R5F2136CSNFA#V0 pinout, R5F2136CSNFA#V0 application, or R5F2136CSNFA#V0 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 touch UI, BGO-enabled data flash for firmware updates, and hardware LIN support for automotive body electronics.

Technical Context

The R5F2136CSNFA#V0 implements the R8C CPU core with 89 fundamental instructions, 1 Mbyte address space, and a dedicated 16×16→32-bit multiplier with MAC capability. Its clock system includes four independent sources: XIN/XOUT crystal oscillator, XCIN/XCOUT low-frequency 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 centers on real-time control and human interface: Timer RC supports 3-pin PWM output and input capture; Timer RB2 provides programmable waveform generation; the Event Link Controller (ELC) enables 30-source × 10-type event chaining without CPU intervention; and the TSCU uses system channels CHxA0–CHxC and 28 dedicated touch pins (e.g., CH00–CH08, CH10–CH11, CH16–CH25) for floating capacitance detection.

Key Specifications

Pinout & Package

64-pin LQFP package (PLQP0064GA-A), 0.8 mm pin pitch, 14 mm × 14 mm body size, exposed pad not specified. Pin functions include 59 CMOS I/O ports (with selectable pull-up), 1 input-only port (P4_2), 12 analog inputs (AN0–AN11), 28 dedicated TSCU electrode pins, and multi-function pins supporting UART, I²C, LIN, timers, and clock sources.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F2136ASDFA#V0 and R5F21368SDFA#V0, the R5F2136CSNFA#V0 delivers maximum on-chip memory headroom for complex touch UIs and field-upgradable firmware, making it optimal for next-generation appliances requiring feature scalability and long-term maintenance.

Availability

R5F2136CSNFA#V0 is available at Aetrix Electronics and suitable for home appliance control, industrial HMI panels, audio equipment front ends, and consumer IoT remotes requiring stable component supply and long lifecycle support.

Supply support for R5F2136CSNFA#V0 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/36T-A Group, including R5F2136CSNFA#V0, was designed for cost-effective, low-power embedded control in consumer electronics with integrated touch sensing, LIN connectivity, and robust mixed-signal peripherals.

FAQ

What is the operating temperature range for the R5F2136CSNFA#V0?

The R5F2136CSNFA#V0 is the D-version part, rated for industrial operation from -40°C to +85°C ambient temperature. This rating is confirmed in Table 1.2 of the R01DS0055EJ0100 datasheet and applies to the PLQP0064GA-A package variant used in this part number. The R5F2136CSNFA#V0 meets this specification under all supported voltage and clock conditions.

Does the R5F2136CSNFA#V0 support background operation (BGO) for data flash?

Yes, the R5F2136CSNFA#V0 supports background operation (BGO) for its 4 KB data flash (1 KB × 4 blocks), as explicitly stated in Section 1.1 and Table 1.2 of the R01DS0055EJ0100 datasheet. This allows the CPU to execute code from program ROM while simultaneously erasing or programming data flash - critical for reliable over-the-air firmware updates in deployed R5F2136CSNFA#V0 systems.

How many touch sensing channels does the R5F2136CSNFA#V0 support?

The R5F2136CSNFA#V0 integrates a Touch Sensor Control Unit (TSCU) supporting 28 electrostatic capacitive touch channels, as documented in Section 1.1 and Figure 1.2 of the R01DS0055EJ0100 datasheet. These include system channels CHxA0, CHxA1, CHxB, CHxC and dedicated pins CH00–CH08, CH10–CH11, CH16–CH25, CH27–CH28, CH31–CH35 - all accessible on the 64-pin LQFP package of the R5F2136CSNFA#V0.

What serial communication interfaces are integrated into the R5F2136CSNFA#V0?

The R5F2136CSNFA#V0 integrates UART0_0, UART0_1 (2 channels), UART2 (1 channel with I²C mode), SSU/I²C_0 (1 shared channel), and a dedicated hardware LIN module (HW-LIN_0). UART2 and SSU/I²C_0 share pins but operate independently per configuration - enabling flexible connectivity for appliance control buses, debug interfaces, and sensor networks in R5F2136CSNFA#V0-based designs.

What is the maximum CPU clock frequency and supply voltage range for the R5F2136CSNFA#V0?

The R5F2136CSNFA#V0 supports a maximum CPU clock frequency of 20 MHz at a supply voltage of 2.7 V to 5.5 V, and 5 MHz at 1.8 V to 5.5 V, as specified in Table 1.2 of the R01DS0055EJ0100 datasheet. This dual-voltage/frequency capability allows the R5F2136CSNFA#V0 to operate reliably across battery-powered and line-powered consumer applications without external level-shifting.