Renesas R5F1036ADSP#V0

Overview

R5F1036ADSP#V0 from Renesas Electronics is a 20-pin LSSOP ultra-low-power 16-bit RL78/G12 microcontroller designed for industrial embedded control. It operates from 1.8 V to 5.5 V, delivers 31 DMIPS at 24 MHz, integrates 2 KB code flash and 256 B RAM, and supports HALT/STOP/SNOOZE low-power modes for battery-powered sensor nodes and smart actuators.

For engineers reviewing the R5F1036ADSP#V0 datasheet, R5F1036ADSP#V0 pinout, R5F1036ADSP#V0 application, or R5F1036ADSP#V0 equivalent, key selection criteria include its industrial-grade –40°C to +85°C temperature rating (D-suffix), absence of data flash memory, single UART channel, and 18 I/O pins with N-ch open-drain capability - critical for interfacing with 3.3 V/5 V peripherals in HVAC controllers and industrial I/O modules.

Technical Context

The R5F1036ADSP#V0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and 1 MB address space. It uses a high-speed on-chip oscillator (1–24 MHz) with ±5.0% accuracy over –40°C to +85°C and a dedicated 15 kHz low-speed on-chip oscillator for watchdog and interval timing.

Peripheral integration includes a 10-bit 11-channel A/D converter with internal 1.45 V reference and temperature sensor, four 16-bit timer channels (with PWM support), one 12-bit interval timer, one window watchdog timer, and simplified SPI (CSI) and I²C-compatible interfaces - all configured via peripheral I/O redirection register (PIOR) for flexible pin assignment.

Key Specifications

Pinout & Package

Package: 20-pin plastic LSSOP (4.4 × 6.5 mm, 0.65-mm pitch), RoHS-compliant, tray packaging (#V0).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F1036ADSP#V0, the R5F1026ADSP#V0 adds data flash and DMA for local data buffering but increases BOM cost; the RL78/G13 R5F104BAASP#V0 offers CAN and larger memory at the expense of higher power and package size - making R5F1036ADSP#V0 optimal for cost-constrained, low-power industrial controls where UART-only comms suffice.

Availability

R5F1036ADSP#V0 is available at Aetrix Electronics and suitable for industrial motor control, smart building sensors, programmable logic relays, and industrial I/O modules requiring stable component supply and long-term manufacturing support.

Supply support for R5F1036ADSP#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 industrial, automotive, and IoT markets.

The RL78/G12 product line targets cost-sensitive, ultra-low-power embedded applications in industrial automation and consumer appliances - emphasizing energy efficiency, integrated analog peripherals, and simplified development.

FAQ

What is the maximum operating frequency and performance of the R5F1036ADSP#V0?

The R5F1036ADSP#V0 operates up to 24 MHz using its high-speed on-chip oscillator and delivers 31 DMIPS of processing performance. Its RL78 CPU core executes instructions in as little as 0.04167 µs at 24 MHz, enabling real-time response in motor control and sensor fusion applications. The R5F1036ADSP#V0 maintains this performance across its full 1.8–5.5 V supply range and industrial –40°C to +85°C temperature grade.

Does the R5F1036ADSP#V0 include data flash memory?

No, the R5F1036ADSP#V0 does not include data flash memory. As confirmed in the RL78/G12 datasheet Section 1.3.1, data flash (2 KB) is present only in R5F102-series parts; R5F103-series devices like the R5F1036ADSP#V0 omit this feature. Firmware must use code flash for parameter storage or rely on external EEPROM/FRAM if non-volatile data retention is required.

What serial communication interfaces are supported by the R5F1036ADSP#V0?

The R5F1036ADSP#V0 supports one UART channel (UART0), one simplified SPI (CSI00), and no simplified I²C channels - per RL78/G12 datasheet Table 1-1 and Section 1.3.3. It also includes one standard I²C interface (IICA0) and remappable pins (P60/P61) that can serve as I²C clock/data lines. This configuration suits point-to-point industrial protocols like Modbus RTU or simple sensor interfacing without multi-master I²C requirements.

What is the I/O count and voltage tolerance of the R5F1036ADSP#V0?

The R5F1036ADSP#V0 provides 18 total I/O pins in its 20-pin LSSOP package, including two 6 V-tolerant N-ch open-drain outputs (P60, P61) and four additional N-ch open-drain I/Os rated for VDD withstand voltage. All GPIOs support different-potential interface with 1.8 V, 2.5 V, and 3.3 V logic families, enabling direct connection to diverse sensors and actuators without level shifters.

How does the R5F1036ADSP#V0 handle power supply supervision and reset?

The R5F1036ADSP#V0 integrates an on-chip power-on-reset (POR) circuit triggering at ~1.51 V and a 12-level voltage detector (LVD) with selectable interrupt or reset thresholds from 1.88 V to 4.06 V. These features ensure reliable startup and brown-out recovery in industrial power environments. The RESET pin (P125) supports external reset assertion, and internal resets are generated by watchdog timeout, illegal instruction execution, or RAM parity errors.