Renesas R5F21366CNFP#V0

Overview

R5F21366CNFP#V0 from Renesas Electronics is a 16-bit R8C CPU core microcontroller with 32 KB program ROM, 2.5 KB data flash (4 × 1 KB blocks), and 2.5 KB RAM in a 64-pin LQFP (PLQP0064KB-A) package. It operates at up to 20 MHz (VCC = 2.7–5.5 V), features integrated 10-bit ADC (12 channels), dual 8-bit DACs, LIN hardware module, and real-time clock timer RE - deployed in consumer audio equipment and office automation control systems.

For engineers reviewing the R5F21366CNFP#V0 datasheet, R5F21366CNFP#V0 pinout, R5F21366CNFP#V0 application, or R5F21366CNFP#V0 equivalent, key selection criteria include its N-version industrial temperature range (−20°C to +85°C), background operation (BGO) support for data flash, low-power stop mode (2.0 µA), and hardware LIN compliance using UART0 and timer RA.

Technical Context

The R5F21366CNFP#V0 implements the R8C CPU core with 89 fundamental instructions, 16×16→32-bit multiplier, and multiply-accumulate capability. Its memory map spans 1 Mbyte, with fixed interrupt vector table at 0FFDCh–0FFFFh and data flash at 03000h–03FFFh.

Peripheral integration includes four independent timer units (RA–RD), 8-bit real-time clock (timer RE), 16-bit input-capture/output-compare timers RF/RG, three UART/serial interfaces (UART0–2 with I²C mode), and DTC with 39 activation sources - enabling deterministic sensor sampling, motor PWM generation, and LIN bus communication without CPU intervention.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (PLQP0064KB-A), 10 mm × 10 mm, 0.5 mm pitch, exposed pad not specified. Pin functions are programmable per peripheral multiplexing; all I/O ports support CMOS levels and selectable pull-up resistors.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F21365CNFP, R5F21366CNFP#V0 offers +8 KB ROM and +0.5 KB data flash for enhanced feature sets; versus R5F21366CNFA, it uses the KB-A package optimized for standard reflow profiles and higher-volume assembly.

Availability

R5F21366CNFP#V0 is available at Aetrix Electronics and suitable for audio equipment control, office automation motor drive, consumer appliance UI, and LIN-based sensor node applications requiring stable component supply across extended production lifecycles.

Supply support for R5F21366CNFP#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 is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT markets.

The R8C/36C Group, including R5F21366CNFP#V0, was designed for cost-sensitive, low-power embedded control in consumer electronics - emphasizing integrated analog peripherals, LIN connectivity, and ultra-low standby current.

FAQ

What is the operating temperature range for R5F21366CNFP#V0?

The R5F21366CNFP#V0 is an N-version device rated for −20°C to +85°C ambient operating temperature. This specification is confirmed in Table 1.2 of the R01DS0018EJ0110 datasheet and applies to the PLQP0064KB-A package variant. The D-version (e.g., R5F21366CDFP) extends the lower limit to −40°C.

Does R5F21366CNFP#V0 support in-system programming of its data flash?

Yes, R5F21366CNFP#V0 supports background operation (BGO) for data flash, allowing erase and write operations while the CPU executes code from program ROM. Data flash endurance is rated at 10,000 cycles, and programming/erasure voltage is VCC = 2.7–5.5 V - both specified in Table 1.2 of the datasheet.

Which pins on R5F21366CNFP#V0 are dedicated to the hardware LIN interface?

The hardware LIN interface on R5F21366CNFP#V0 uses UART0 (pins P6_3/TXD1 and P6_4/RXD1) combined with timer RA (P3_2/TRAIO) for baud rate generation and sync pulse timing. This configuration is explicitly defined in Section 1.1.2 "Specifications" and Figure 1.2 "Block Diagram" of the R01DS0018EJ0110 datasheet.

Can R5F21366CNFP#V0 operate from a 3.3 V supply while running at 20 MHz?

No - R5F21366CNFP#V0 requires VCC = 2.7–5.5 V for 20 MHz operation (f(XIN) = 20 MHz). At 3.3 V, full-speed operation is supported, but the minimum VCC for 20 MHz is 2.7 V. For 5 MHz operation, VCC may be as low as 1.8 V, as stated in Table 1.2 under "Operating Frequency/Supply Voltage".

How many capture/compare registers does Timer RC support on R5F21366CNFP#V0?

Timer RC on R5F21366CNFP#V0 supports 4 capture/compare registers, enabling simultaneous input capture on multiple edges and independent PWM output on up to 3 pins. This capability is documented in Table 1.1 "Specifications for R8C/36C Group (1)" under the Timer RC entry and confirmed in Figure 1.2's peripheral block diagram.