Renesas R5F21336CNFP#30

Overview

R5F21336CNFP#30 from Renesas Electronics is a 16-bit R8C CPU core microcontroller with 32 KB flash program memory, 2.5 KB RAM, and 4 KB data flash (1 KB × 4 blocks) supporting background operation (BGO). It operates at up to 20 MHz (V_CC = 2.7–5.5 V), integrates 10-bit ADC (12 channels), dual 8-bit DACs, LIN hardware module, and real-time clock (Timer RE), targeting embedded control in consumer appliances and office equipment.

For engineers reviewing the R5F21336CNFP#30 datasheet, R5F21336CNFP#30 pinout, R5F21336CNFP#30 application, or R5F21336CNFP#30 equivalent, key selection considerations include its 32-pin LQFP package (PLQP0032GB-A), -20°C to +85°C operating range (N version), integrated voltage detection circuitry, and support for low-power wait/stop modes with typical current as low as 2.0 µA.

Technical Context

The R5F21336CNFP#30 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 program ROM starting at 08000h and data flash at 03000h–03FFFh.

It features four independent clock sources - XIN/XOUT (up to 20 MHz), XCIN/XCOUT (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, I²C-bus, SSU, three 8-bit timers (RA/RB/RE), one 16-bit timer (RC), DTC, watchdog timer, and comparator B.

Key Specifications

Pinout & Package

Package: 32-pin LQFP (PLQP0032GB-A), 7 mm × 7 mm, 0.8 mm pitch, surface-mount.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F21336CDFP, R5F21336CNFP#30 trades industrial temperature range for lower cost in commercial environments; compared with R5F21335CNFP, it provides 8 KB additional flash and 0.5 KB more RAM for enhanced feature sets or field-upgrade headroom.

Availability

R5F21336CNFP#30 is available at Aetrix Electronics and suitable for home appliance control, office equipment interface, and consumer audio equipment requiring stable component supply and long-term production continuity.

Supply support for R5F21336CNFP#30 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/33C Group, including R5F21336CNFP#30, was designed for cost-sensitive, low-power embedded control applications in consumer electronics-emphasizing integration of analog peripherals, real-time clock, and communication interfaces in compact 32-pin packages.

FAQ

What is the maximum operating frequency and supply voltage range for the R5F21336CNFP#30?

The R5F21336CNFP#30 supports a maximum operating frequency of 20 MHz at V_CC = 2.7–5.5 V, and 5 MHz at V_CC = 1.8–5.5 V. Its wide supply range enables direct compatibility with common 3.3 V and 5 V system rails, and the 1.8 V minimum allows integration into mixed-voltage designs with level-shifting only where necessary. The R5F21336CNFP#30 maintains full functionality across this range without external regulators.

Does the R5F21336CNFP#30 support in-circuit debugging and flash programming?

Yes, the R5F21336CNFP#30 includes on-chip debug capability and on-board flash rewrite functionality, enabling real-time debugging and firmware updates without removing the device from the PCB. It supports standard Renesas E8/E8a debug interfaces and requires no external debug probe beyond the standard JTAG/SWD connection. The R5F21336CNFP#30 also implements ROM code protection and ID code check to secure firmware during development and production.

How many analog-to-digital converter (ADC) channels does the R5F21336CNFP#30 provide, and what is its resolution?

The R5F21336CNFP#30 integrates a single 10-bit successive-approximation ADC with 12 input channels (AN0–AN11), including sample-and-hold and hardware sweep mode for automatic channel scanning. All channels support differential input configurations via internal routing, and conversion results are accessible via dedicated AD0–AD7 registers. The R5F21336CNFP#30 ADC operates across the full V_CC range and supports external trigger inputs (ADTRG) for synchronized sampling.

What communication interfaces are built into the R5F21336CNFP#30?

The R5F21336CNFP#30 includes UART0, UART1, and UART2 (with I²C-bus mode), a shared SSU/I²C-bus peripheral, and a hardware LIN module implemented using UART0 and Timer RA. UART2 supports multiprocessor communication and clock-synchronous serial I/O. The R5F21336CNFP#30 does not include SPI or CAN interfaces natively; those require software emulation or external ICs. All serial modules share I/O pins and are configured via SFRs.

Is the R5F21336CNFP#30 pin-compatible with other devices in the R8C/33C Group?

Yes, all R8C/33C Group MCUs-including R5F21331CNFP through R5F21336CNFP and their D-version counterparts-share identical 32-pin LQFP (PLQP0032GB-A) packaging and pin assignments. This allows direct PCB reuse across memory variants (4–32 KB ROM) and temperature grades (N/D), provided firmware accommodates differences in RAM size, data flash layout, and SFR initialization. The R5F21336CNFP#30 requires no layout changes when substituting for lower-memory variants in the same package.