Renesas R5F12048GSP#30

Overview

R5F12048GSP#30 from Renesas Electronics is an RL78/G15 16-pin industrial-grade 8 KB flash MCU with 1 KB RAM, 7-channel 8/10-bit ADC, dual simplified I²C and SPI interfaces, and 8-channel 16-bit timer array - deployed in smart sensors and motor control modules operating from −40°C to +105°C.

For engineers reviewing the R5F12048GSP#30 datasheet, R5F12048GSP#30 pinout, R5F12048GSP#30 application, or R5F12048GSP#30 equivalent, key selection criteria include its 16-pin SSOP package, 8 KB code flash with self-programming, high-speed on-chip oscillator accuracy of ±1.0% (−20°C to +85°C), and support for background data flash rewrites at VDD = 2.4–5.5 V.

Technical Context

The R5F12048GSP#30 implements the RL78 CPU core with a 3-stage CISC pipeline, 1 MB address space, and selectable power-on-reset (SPOR) with four voltage thresholds. It integrates a dedicated low-speed on-chip oscillator (15 kHz) for watchdog operation and supports main clock sources including crystal (X1/X2, 1–12 MHz), external clock (EXCLK, 1–16 MHz), and high-speed on-chip oscillator (1–16 MHz).

Its peripheral set includes two serial array units (SAU0) enabling up to two simplified SPI (CSI), two simplified I²C, and one UART channel; a 12-bit interval timer; BCD correction circuit; and programmable clock/buzzer output (PCLBUZ0) capable of up to 10 MHz output when fMAIN = 10 MHz.

Key Specifications

Pinout & Package

Package: 16-pin plastic SSOP (4.4 × 5.0 mm, 0.65-mm pitch), RoHS-compliant, industrial temperature grade (G).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F12047GSP#30, the R5F12048GSP#30 provides double flash capacity for feature-rich firmware, while versus R5F12048MSP#30 it delivers tighter oscillator tolerance (±1.0% vs ±1.5%) across the −20°C to +85°C range critical for precision timing in metering and control loops.

Availability

R5F12048GSP#30 is available at Aetrix Electronics and suitable for smart thermostats, industrial motor drives, and programmable logic controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F12048GSP#30 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 IoT markets.

The RL78/G15 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive industrial control, sensor nodes, and appliance applications - emphasizing integrated analog, flexible clocking, and robust industrial qualification.

FAQ

What is the maximum operating frequency and instruction execution time of the R5F12048GSP#30?

The R5F12048GSP#30 supports a maximum high-speed on-chip oscillator frequency of 16 MHz, yielding a minimum instruction execution time of 0.0625 μs. This timing assumes high-speed on-chip oscillator operation with no wait states; actual performance depends on flash wait-state configuration and peripheral clock dividers. The RL78 core's 3-stage pipeline enables deterministic execution across all supported frequencies.

Does the R5F12048GSP#30 support external crystal oscillation, and what are the frequency limits?

Yes, the R5F12048GSP#30 supports external crystal oscillation via X1 and X2 pins, with a specified frequency range of 1 to 12 MHz at VDD = 2.4–5.5 V. It also accepts external clock input (EXCLK) from 1 to 16 MHz. Crystal operation requires proper load capacitance matching and oscillation stabilization time monitoring via the OSTC register before switching from the on-chip oscillator.

How many analog input channels does the R5F12048GSP#30 have, and what ADC resolution is supported?

The R5F12048GSP#30 features 7 analog input channels (ANI0 through ANI6) and supports both 8-bit and 10-bit A/D conversion modes. Conversion uses VDD as the reference by default, but an internal 0.815 V reference (IVREF0) is available for improved precision in ratiometric measurements. The ADC operates across the full VDD range of 2.4–5.5 V.

Can the R5F12048GSP#30 perform data flash rewrites while executing code from code flash memory?

No, the R5F12048GSP#30 does not support background operation (BGO) for data flash rewrites. During data flash programming or erasure, instruction execution from code flash memory is halted. This requires careful firmware design - such as copying rewrite routines to RAM or using HALT mode - to avoid system lockup during non-volatile data updates.

What is the I/O count and voltage tolerance of the R5F12048GSP#30's digital ports?

The R5F12048GSP#30 provides 14 total I/O pins (13 CMOS I/O + 1 CMOS input), with up to 9 pins supporting N-ch open-drain output rated to withstand VDD. All I/O operate at VDD = 2.4–5.5 V, and input voltage tolerance is −0.3 V to VDD + 0.3 V (max 6.5 V). Pull-up resistors can be enabled per-port, and external interrupt capability is available on 8 channels (INTP0–INTP7).