Renesas R5F2136ACNFP#10

Overview

R5F2136ACNFP#10 from Renesas Electronics is a 16-bit R8C/26 Group single-chip microcontroller in 32-pin LQFP (PLQP0032GB-A), featuring an 89-instruction R8C CPU core, 24 KB flash ROM, 1.5 KB RAM, 12-channel 10-bit A/D converter, and hardware LIN module - deployed in automotive body control units and industrial sensor interfaces.

For engineers reviewing the R5F2136ACNFP#10 datasheet, R5F2136ACNFP#10 pinout, R5F2136ACNFP#10 application, or R5F2136ACNFP#10 equivalent, key selection criteria include its -20 to +85°C operating range (N version), 50 ns minimum instruction cycle at 20 MHz, integrated real-time clock (Timer RE), dual UART with LIN support, and 25 I/O pins with LED drive capability on P1.

Technical Context

The R5F2136ACNFP#10 implements the R8C CPU core with two register banks, 20-bit program counter, and 11-bit flag register supporting 7-level interrupt priority. It executes instructions in single-chip mode with 1 Mbyte address space and uses three independent clock generation circuits: XIN-based crystal oscillator, high-speed/low-speed on-chip oscillators (with frequency adjustment), and XCIN/XCOUT 32 kHz RTC oscillator (N/D version only).

Peripheral integration includes Timer RA/RB (8-bit ×2), Timer RC (16-bit input capture/output compare), Timer RE (real-time clock + compare match), two UARTs (UART0/UART1), one I²C bus interface, one clock-synchronous serial I/O with chip select, and a hardware LIN module leveraging Timer RA and UART0 - all mapped to dedicated pins with programmable function assignment.

Key Specifications

Pinout & Package

Package: 32-pin molded-plastic LQFP (PLQP0032GB-A), 7 mm × 7 mm, 0.8 mm pitch, exposed pad not specified.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F2136ACNFP#10, R5F21266SNFP offers more program space but no data retention advantage, while R5F21274SDFP adds data flash and extended temperature rating at the cost of higher qualification requirements and marginally higher system cost.

Availability

R5F2136ACNFP#10 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and home appliance control systems requiring stable component supply and long-term lifecycle support.

Supply support for R5F2136ACNFP#10 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 formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power solutions.

The R8C/26 Group, including R5F2136ACNFP#10, was designed for cost-sensitive, low-power embedded applications in automotive, industrial, and consumer markets where integration, reliability, and toolchain maturity are critical.

FAQ

What is the maximum operating frequency and corresponding supply voltage for R5F2136ACNFP#10?

R5F2136ACNFP#10 achieves a maximum operating frequency of 20 MHz at VCC = 3.0 to 5.5 V, delivering a 50 ns minimum instruction execution time. This specification applies to non-K versions; the K version is rated for 16 MHz. The device remains functional down to 2.2 V at reduced frequencies (5 MHz), enabling robust operation across wide input voltage ranges in automotive and industrial environments.

Does R5F2136ACNFP#10 include on-chip data flash memory?

No, R5F2136ACNFP#10 belongs to the R8C/26 Group and contains only program flash ROM (24 KB). It does not integrate data flash. Data flash (1 KB ×2 blocks) is exclusive to the R8C/27 Group, such as R5F21274SDFP. For nonvolatile data storage in R5F2136ACNFP#10 designs, external EEPROM or emulated data flash in program ROM sectors must be implemented.

Which pins on R5F2136ACNFP#10 support hardware LIN communication?

R5F2136ACNFP#10 implements hardware LIN using UART0 and Timer RA. Specifically, UART0 TXD0 (pin 17) and RXD0 (pin 16) handle LIN data transmission and reception, while Timer RA output (TRAO on pin 2) generates the LIN sync field and baud rate timing. This dedicated hardware offloads LIN protocol handling from firmware, ensuring timing accuracy and reducing CPU overhead.

What is the purpose of the XCIN/XCOUT pins on R5F2136ACNFP#10?

The XCIN (pin 4) and XCOUT (pin 6) pins on R5F2136ACNFP#10 provide a dedicated 32 kHz crystal oscillator input/output for Timer RE's real-time clock function. These pins are available only on N and D versions (like R5F2136ACNFP#10) and enable highly accurate timekeeping independent of the main XIN oscillator - essential for battery-backed clock/calendar applications in industrial and appliance systems.

Can R5F2136ACNFP#10 drive LEDs directly, and what are the current limits?

Yes, R5F2136ACNFP#10 can drive LEDs directly using P1_0 to P1_7, which support LED sink/source functionality in N and D versions. Each P1 pin delivers up to 20 mA sink current and 10 mA source current, allowing direct connection of standard LEDs without external drivers. This feature reduces bill-of-materials cost and PCB area in user interface applications like appliance control panels.