Renesas R5F36B3EDNP#U0

Overview

R5F36B3EDNP#U0 from Renesas Electronics is a 16-bit CMOS microcontroller in the M16C/6B Group, featuring 256 KB on-chip Flash memory, 16 KB RAM, and operating at up to 20 MHz CPU clock. It integrates UART, I²C, PWM timers, and 10-bit ADC for embedded control. Used in industrial motor drives and HVAC system controllers.

For engineers reviewing the R5F36B3EDNP#U0 datasheet, R5F36B3EDNP#U0 pinout, R5F36B3EDNP#U0 application, or R5F36B3EDNP#U0 equivalent, key selection criteria include Flash endurance (100k write/erase cycles), 10-bit ADC resolution with 16-channel input, and support for both main clock (1–20 MHz crystal) and subclock (32.768 kHz) operation.

Technical Context

The R5F36B3EDNP#U0 implements the M16C CPU core with 16-bit data bus and 24-bit address space, supporting 16-level priority interrupt handling and three power-saving modes (Wait, Stop, and Subclock-only). Its clock generation circuit includes PLL-based frequency multiplication and oscillation stop detection with automatic recovery.

Peripheral integration includes two UART channels with framing error detection, one I²C interface compliant with standard-mode (100 kbps), four 16-bit reload timers with capture/compare capability, and a 10-bit successive-approximation ADC with internal reference voltage (2.5 V).

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F36B2EDFP#U0 and R5F36B4EDNP#U0, the R5F36B3EDNP#U0 balances Flash capacity, peripheral set, and low-power capability-making it optimal for non-CAN industrial controllers needing robust ADC and UART/I²C connectivity without over-specifying memory or interface features.

Availability

R5F36B3EDNP#U0 is available at Aetrix Electronics and suitable for industrial motor control, HVAC system controllers, smart power meters, and PLC I/O modules requiring stable component supply and long-term lifecycle support.

Supply support for R5F36B3EDNP#U0 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.

The M16C/6B Group-including the R5F36B3EDNP#U0-is designed for deterministic real-time control in resource-constrained embedded systems where reliability, low-power operation, and mixed-signal integration are critical.

FAQ

What is the maximum operating frequency of the R5F36B3EDNP#U0?

The R5F36B3EDNP#U0 supports a maximum CPU clock frequency of 20 MHz. This is achieved either directly from a 20 MHz crystal connected to XIN/XOUT or via PLL multiplication of a lower-frequency source such as the 32.768 kHz subclock. The internal clock generation circuit ensures stable operation across temperature ranges from −40°C to +85°C.

Does the R5F36B3EDNP#U0 include an integrated ADC?

Yes, the R5F36B3EDNP#U0 integrates a 10-bit successive-approximation ADC with 16 input channels. It supports hardware-triggered conversions using timer overflows or external interrupts, includes an internal 2.5 V reference, and achieves conversion times as fast as 1.5 μs-enabling high-fidelity analog sensing in motor control and sensor fusion applications.

Is the R5F36B3EDNP#U0 pin-compatible with other M16C/6B devices?

The R5F36B3EDNP#U0 uses a 100-pin LQFP package with a defined pin assignment shared across the M16C/6B Group. While many signals (e.g., UART, ADC inputs, timers) align across variants like R5F36B2EDFP#U0 and R5F36B4EDNP#U0, differences in peripheral inclusion (e.g., CAN, subclock oscillator) mean full functional compatibility requires verification against specific variant datasheets-not just pin count or package.

What debug interface does the R5F36B3EDNP#U0 support?

The R5F36B3EDNP#U0 supports single-wire debug (SWD) via dedicated pins (SWDIO and SWCLK), enabling non-intrusive real-time debugging, flash programming, and trace without halting peripheral operation. This interface is compatible with Renesas E2 emulator and third-party tools supporting ARM Cortex-style SWD protocols adapted for M16C architecture.

What is the Flash endurance specification for the R5F36B3EDNP#U0?

The R5F36B3EDNP#U0 specifies 100,000 write/erase cycles for its 256 KB on-chip Flash memory, with guaranteed data retention of 10 years at +85°C. Flash sectors can be erased independently, and lock bits provide three-tier security to prevent accidental or unauthorized reprogramming during field deployment.