Renesas R5F101GCDFB#V0

Overview

R5F101GCDFB#V0 from Renesas is a 48-pin LFQFP-packaged 16-bit RL78/G13 microcontroller with 96 KB flash, 8 KB RAM, and no data flash memory, operating from 1.6 V to 5.5 V. It delivers 41 DMIPS at 32 MHz, features ultra-low-power modes (0.57 μA RTC+LVD), integrated 10-bit ADC (26 channels), real-time clock, and UART/I²C/CSI interfaces - deployed in battery-powered industrial sensors and smart metering endpoints.

For engineers reviewing the R5F101GCDFB#V0 datasheet, R5F101GCDFB#V0 pinout, R5F101GCDFB#V0 application, or R5F101GCDFB#V0 equivalent, key selection criteria include its 48-pin LFQFP-0.5 mm pitch package, absence of on-chip data flash, -40°C to +85°C industrial temperature grade (D suffix), and support for background data flash programming via external library when paired with compatible variants.

Technical Context

The R5F101GCDFB#V0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz HS mode) to 30.5 μs (32.768 kHz sub-system clock). Its memory map spans 1 MB address space, with dedicated SFR regions for peripheral control and 8 KB of on-chip RAM mapped for general-purpose use and flash library operation.

Power management includes hardware HALT/STOP/SNOOZE modes, on-chip POR and 14-level LVD, and dual-clock domains (main oscillator + subsystem clock). Peripheral integration comprises 8× 16-bit timers, 1× 12-bit interval timer, 1× calendar RTC with alarm/correction, 1× watchdog timer, and up to 26-channel 10-bit ADC with internal 1.45 V reference and temperature sensor.

Key Specifications

Pinout & Package

Package: 48-pin LFQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F101GCDFB#V0, R5F100GCDFB#V0 adds data flash for local parameter retention but increases cost and code complexity for flash shield management; R5F101GCAFJ#V0 offers identical functionality in a smaller thermal footprint but requires tighter assembly control and lacks exposed heat pad for heatsinking.

Availability

R5F101GCDFB#V0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, and home appliance control requiring stable component supply, long-term industrial temperature validation, and Renesas ecosystem compatibility.

Supply support for R5F101GCDFB#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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for automotive, industrial, and IoT markets.

The RL78/G13 product line targets cost-sensitive, ultra-low-power general-purpose embedded applications - balancing performance, energy efficiency, and peripheral integration for battery-operated and mains-powered edge devices.

FAQ

What is the maximum clock frequency supported by the R5F101GCDFB#V0?

The R5F101GCDFB#V0 supports a maximum operating frequency of 32 MHz using the high-speed on-chip oscillator. At this speed, it achieves 41 DMIPS performance while maintaining full peripheral functionality including ADC sampling, UART transmission, and timer operations. The oscillator accuracy is ±1.0% across 1.8–5.5 V supply and -20°C to +85°C ambient, eliminating need for external crystal in many applications. R5F101GCDFB#V0 does not support external clock input above 32 MHz.

Does the R5F101GCDFB#V0 include on-chip data flash memory?

No, the R5F101GCDFB#V0 does not include on-chip data flash memory. The "1" in the part number prefix (R5F101xx) explicitly indicates absence of data flash, distinguishing it from R5F100xx variants which integrate 4–8 KB. Firmware must store configuration or logging data externally (e.g., EEPROM or FRAM) or use code flash with wear-leveling software. R5F101GCDFB#V0 retains full code flash self-programming capability for firmware updates.

What is the operating temperature range specified for the R5F101GCDFB#V0?

The R5F101GCDFB#V0 is rated for industrial operation from -40°C to +85°C, indicated by the "D" suffix in its full ordering code. This rating is validated per Renesas' qualification standards and applies to all electrical specifications including flash endurance, ADC linearity, and oscillator stability. It is not qualified for extended temperature ranges (e.g., -40°C to +105°C denoted by "G" suffix) or consumer-grade operation (-40°C to +85°C with "A" suffix and reduced test coverage).

Which communication interfaces are available on the R5F101GCDFB#V0?

The R5F101GCDFB#V0 integrates three serial interface types: up to 8 CSI (Simplified SPI) channels, up to 4 UART/LIN channels, and up to 10 I²C/Simplified I²C channels. All are multiplexed across GPIO pins and support hardware flow control, automatic baud rate detection (UART), and clock stretching (I²C). No CAN, USB, or Ethernet peripherals are included. R5F101GCDFB#V0 uses shared peripheral channel select (CS) to dynamically assign functions to pins without remapping registers.

How many analog input channels does the R5F101GCDFB#V0 support?

The R5F101GCDFB#V0 supports up to 26 analog input channels for its 10-bit successive-approximation ADC. These are distributed across ports P20–P27 (8 channels), P30–P37 (8 channels), P40–P47 (8 channels), and P50–P51 (2 channels), with P20/P21 doubling as AVREFP/AVREFM reference pins. The ADC includes internal 1.45 V reference and temperature sensor, both usable only in high-speed main mode. R5F101GCDFB#V0 supports simultaneous sampling on up to two channels using hardware triggers.