Renesas R5F21336MNFP#50

Overview

R5F21336MNFP#50 from Renesas Electronics is a 16-bit R8C CPU core microcontroller with 32 KB flash program ROM, 2.5 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 10-bit A/D (12 channels), dual 8-bit D/A converters, LIN hardware module, and real-time clock (Timer RE), targeting embedded control in consumer audio and office equipment.

For engineers reviewing the R5F21336MNFP#50 datasheet, R5F21336MNFP#50 pinout, R5F21336MNFP#50 application, or R5F21336MNFP#50 equivalent, key selection criteria include its 32-pin LQFP package, -20°C to +85°C temperature grade (N version), integrated LIN transceiver support via Timer RA and UART0, and BGO-enabled in-system reprogramming of data flash without halting CPU execution.

Technical Context

The R5F21336MNFP#50 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 at 08000h–0FFFFh 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. Power management includes wait mode (3.5 µA @ 3.0 V, 32 kHz) and stop mode (2.0 µA).

Key Specifications

Pinout & Package

Package: 32-pin LQFP (PLQP0032GB-A), 7 mm × 7 mm, 0.8 mm pitch, surface-mount compatible with standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R5F21336MDFP, the R5F21336MNFP#50 offers identical functionality at commercial temperature grade, reducing cost and qualification overhead; versus R5F21335MNFP, it provides 8 KB additional flash for feature-rich firmware or field-upgradable capabilities without changing PCB layout.

Availability

R5F21336MNFP#50 is available at Aetrix Electronics and suitable for audio equipment control, office equipment motor control, consumer appliance UI, and home automation sensor hub applications requiring stable component supply and long-term production continuity.

Supply support for R5F21336MNFP#50 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/33M Group, including R5F21336MNFP#50, was designed for cost-effective, low-power embedded control in consumer electronics - emphasizing integration of LIN, RTC, A/D, and D/A to minimize external components in space-constrained designs.

FAQ

What is the maximum operating frequency and supply voltage range for the R5F21336MNFP#50?

The R5F21336MNFP#50 supports a maximum operating frequency of 20 MHz at VCC = 2.7–5.5 V, and a minimum frequency of 5 MHz at VCC = 1.8–5.5 V. This dual-voltage capability allows flexible power design - for example, running at 10 MHz with 3.0 V for reduced EMI and power consumption while maintaining sufficient performance for UI and sensor tasks. The R5F21336MNFP#50's wide voltage range simplifies compatibility with legacy 5 V systems or modern 3.3 V rails.

Does the R5F21336MNFP#50 support in-system programming of its data flash memory?

Yes, the R5F21336MNFP#50 supports background operation (BGO) for data flash, enabling erase and write operations while the CPU executes application code from program ROM. This allows real-time parameter storage - such as user preferences or calibration data - without interrupting system operation. The R5F21336MNFP#50's data flash is organized as four 1 KB blocks, each independently erasable, and rated for 10,000 write/erase cycles per block.

How does the hardware LIN module in the R5F21336MNFP#50 function?

The R5F21336MNFP#50 implements LIN 2.0/2.1 protocol support through dedicated hardware combining UART0 and Timer RA - eliminating the need for an external LIN transceiver in basic node applications. UART0 handles byte-level framing and error checking, while Timer RA generates precise baud-rate timing and manages break field detection. The R5F21336MNFP#50's LIN module supports slave-only operation and integrates seamlessly with its 32-pin LQFP footprint, reducing component count in automotive body electronics or appliance sub-networks.

What are the key low-power modes supported by the R5F21336MNFP#50, and their typical current consumption?

The R5F21336MNFP#50 offers three primary low-power modes: standard active mode (6.5 mA @ 5.0 V, 20 MHz), wait mode (3.5 µA @ 3.0 V, 32 kHz sub-clock active), and stop mode (2.0 µA @ 3.0 V, all clocks halted except reset circuit). These modes are controlled via system clock registers (CM0/CM1) and enable rapid wake-up from external interrupts or RTC alarms. The R5F21336MNFP#50's sub-microamp stop mode makes it suitable for battery-backed applications like remote controls or wireless sensors requiring multi-year operation.

Can the R5F21336MNFP#50's A/D converter operate in scan mode, and how many channels does it support?

Yes, the R5F21336MNFP#50's 10-bit A/D converter supports sweep (scan) mode, automatically sequencing through up to 12 analog input channels (AN0–AN11) without CPU intervention. Conversion results are stored in AD0–AD7 registers, and the sweep can be triggered by software, timer, or external signal (ADTRG pin). This capability enables efficient multi-sensor monitoring - for example, reading thermistor, light sensor, and potentiometer values in sequence - and is essential for applications like climate control or audio input level detection in the R5F21336MNFP#50.