Renesas R5F12068GSP#50

Overview

R5F12068GSP#50 from Renesas Electronics is an RL78/G15 20-pin industrial-grade 16-bit microcontroller with 8 KB code flash, 1 KB data flash, and 1 KB RAM. It operates from 2.4 V to 5.5 V, supports −40°C to +105°C ambient temperature (G-grade), integrates an 8/10-bit 11-channel ADC, dual comparators, and eight 16-bit timer channels - deployed in motor control subsystems of HVAC actuators and industrial sensor nodes.

For engineers reviewing the R5F12068GSP#50 datasheet, R5F12068GSP#50 pinout, R5F12068GSP#50 application, or R5F12068GSP#50 equivalent, key selection criteria include its 20-pin LSSOP package with 0.65-mm pitch, 11-channel analog input capability, dual comparator support with independent reference inputs (IVREF0/IVREF1), and verified operation up to +105°C without derating.

Technical Context

The R5F12068GSP#50 implements the RL78-S2 CPU core with a 3-stage pipeline CISC architecture, enabling minimum instruction execution time of 0.0625 μs at 16 MHz using the high-speed on-chip oscillator. Its memory subsystem includes 8 KB code flash (1 KB block size), 1 KB data flash (512 B blocks, 1M rewrite cycles), and 1 KB SRAM - all accessible under single-supply operation.

Peripherals are organized around a unified interrupt controller supporting 19 vectored sources (8 external), TAU0 timer array with 8 channels, SAU0 serial array supporting dual simplified SPI (CSI), dual simplified I²C, and one UART channel. The device uses multiplexed port pins (P00–P07, P20–P23, P40–P41, P121–P125, P137) with configurable peripheral redirection via PIOR registers.

Key Specifications

Pinout & Package

Package: 20-pin LSSOP (4.4 × 6.5 mm, 0.65-mm pitch), tape-and-reel packaging (#50 specification).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F12067GSP#50, the R5F12068GSP#50 provides double code flash capacity for complex control algorithms, while versus R5F12068MSP#50 it delivers tighter oscillator tolerance (±1.0% vs. ±1.5%) at industrial temperatures - optimizing cost and precision for non-automotive thermal environments.

Availability

R5F12068GSP#50 is available at Aetrix Electronics and suitable for HVAC control systems, industrial sensor nodes, programmable power supplies, and smart actuator interfaces requiring stable component supply across extended temperature ranges.

Supply support for R5F12068GSP#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 is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.

The RL78/G15 product line targets cost-sensitive, low-power embedded applications requiring integrated analog peripherals, robust industrial temperature operation, and streamlined development - exemplified by the R5F12068GSP#50's 20-pin LSSOP form factor and dual-comparator ADC subsystem.

FAQ

What is the maximum operating frequency of the R5F12068GSP#50?

The R5F12068GSP#50 supports a maximum high-speed on-chip oscillator frequency of 16 MHz, delivering a minimum instruction execution time of 0.0625 μs. External crystal oscillation up to 12 MHz is also supported via X1/X2 pins. The device maintains full functionality across its rated voltage range (2.4 V to 5.5 V) and temperature grade (−40°C to +105°C).

Does the R5F12068GSP#50 support background data flash writes?

No, the R5F12068GSP#50 does not support background operation (BGO) for data flash writes. During data flash rewriting, instruction execution from code flash memory is halted. This requires firmware to enter a safe state - disabling interrupts and halting real-time tasks - before initiating write operations to the 1 KB data flash block.

How many analog input channels does the R5F12068GSP#50 provide?

The R5F12068GSP#50 provides 11 analog input channels (ANI0 through ANI10), supporting 8-bit or 10-bit resolution ADC conversion. These channels are distributed across Port 0 (ANI0–ANI4), Port 2 (ANI7–ANI10), and Port 4 (ANI6), enabling simultaneous sampling of multiple sensors in compact industrial control applications.

What is the purpose of the VCOUT0 and VCOUT1 pins on the R5F12068GSP#50?

VCOUT0 and VCOUT1 are dedicated comparator output terminals for COMP0 and COMP1, respectively. Each connects directly to the output of its associated comparator and can drive external logic or trigger interrupts (INTP0–INTP7). They support high-speed mode (100 ns propagation delay) and low-speed mode (1 µs) - selectable per comparator - for flexible response to analog threshold events.

Can the R5F12068GSP#50 operate without an external crystal?

Yes, the R5F12068GSP#50 can operate fully without an external crystal, using its factory-trimmed high-speed on-chip oscillator (1–16 MHz selectable) with ±1.0% accuracy from −20°C to +85°C. The low-speed on-chip oscillator (15 kHz) remains available for watchdog and interval timing, making external timing components optional for most industrial applications.