Renesas R5F104GCANA#20

Overview

R5F104GCANA#20 from Renesas is a 48-pin HWQFN-packaged 16-bit RL78/G14 microcontroller with 16 KB flash, 2.5 KB RAM, and 4 KB data flash, operating from 1.6–5.5 V at -40°C to +85°C (industrial grade D). It delivers 44 DMIPS at 32 MHz, features ultra-low-power HALT/STOP/SNOOZE modes (66 μA/MHz active, 0.60 μA RTC+LVD), and integrates 10-bit ADC (8 channels), UART/SPI/I²C interfaces, RTC, and on-chip debug.

For engineers reviewing the R5F104GCANA#20 datasheet, R5F104GCANA#20 pinout, R5F104GCANA#20 application, or R5F104GCANA#20 equivalent, key selection criteria include its 48-pin HWQFN (7×7 mm, 0.5 mm pitch) footprint, industrial temperature rating, integrated data flash rewrite capability (1M cycles), and support for LIN-bus UART and background operation during flash programming.

Technical Context

The R5F104GCANA#20 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 µs @ 32 MHz to 30.5 µs @ 32.768 kHz). It supports multiply/divide/accumulate instructions and a 1 MB address space with four register banks.

Its peripheral set includes an Event Link Controller (ELC) for hardware-triggered event chaining, Data Transfer Controller (DTC) with block/repeat/chain transfer modes, and a Real-Time Clock with calendar, alarm, and clock correction-enabling deterministic low-power system control without CPU intervention.

Key Specifications

Pinout & Package

Package: 48-pin HWQFN (7 × 7 mm, 0.5 mm pitch), exposed die pad recommended to be connected to VSS. Pinout conforms to RL78/G14 48-pin HWQFN configuration (Page 16, Figure 1.3.6).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104BCANA#20, the R5F104GCANA#20 offers lower memory cost and reduced power in idle states due to smaller flash array leakage; compared with R5F104GCANA#30, it provides identical functionality with optimized logistics for manual or small-batch assembly.

Availability

R5F104GCANA#20 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor nodes, building automation panels, and portable medical diagnostics requiring stable component supply across extended product lifecycles.

Supply support for R5F104GCANA#20 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, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G14 family targets cost-sensitive, ultra-low-power general-purpose embedded applications-designed to replace legacy 8-bit MCUs while delivering 16-bit performance, integrated analog, and robust industrial qualification.

FAQ

What is the maximum operating frequency and associated performance of the R5F104GCANA#20?

The R5F104GCANA#20 operates at up to 32 MHz with a measured performance of 44 DMIPS. This is achieved using the high-speed on-chip oscillator, which maintains ±1.0% accuracy across 1.8–5.5 V and -20°C to +85°C. The RL78 CPU core's 3-stage pipeline and efficient CISC instruction set enable this throughput while maintaining ultra-low power consumption-66 μA per MHz in active mode. The R5F104GCANA#20 sustains full peripheral functionality-including all UART, ADC, and timer modules-at this speed.

Does the R5F104GCANA#20 support in-system programming and secure firmware updates?

Yes, the R5F104GCANA#20 supports full in-system programming via its on-chip debug interface and boot swapping capability. It includes flash shield window protection and block-level erase prohibition to prevent unauthorized rewriting of protected sectors. Firmware updates can be performed safely using the self-programming library, which reserves dedicated RAM areas (start address FE900H) and validates integrity before committing changes-ensuring robust field upgrades without external tools. The R5F104GCANA#20 also supports background operation during data flash writes.

What analog peripherals are integrated into the R5F104GCANA#20, and what are their key specifications?

The R5F104GCANA#20 integrates a single 10-bit successive-approximation ADC with 8 input channels (ANI0–ANI7), operating across the full 1.6–5.5 V supply range. It includes internal 1.45 V reference voltage and supports external reference inputs via AVREFP/AVREFM pins. No D/A converter or analog comparator is included in this variant. The ADC supports scan mode, hardware trigger from timers or ELC, and conversion times as low as 1.2 μs per channel. The R5F104GCANA#20 does not include temperature sensor or internal bandgap reference beyond the fixed 1.45 V source.

How does the R5F104GCANA#20 manage low-power operation, and what sleep modes are available?

The R5F104GCANA#20 provides three primary low-power modes: HALT (CPU stopped, peripherals active), STOP (all clocks halted except sub-system clock), and SNOOZE (selected peripherals remain active while CPU sleeps). In STOP mode with only RTC and LVD running, current drops to 0.60 μA-enabling multi-year battery life in always-on applications. Wake-up sources include external interrupts, RTC alarms, and serial interface activity. The R5F104GCANA#20 achieves 66 μA/MHz in active mode, verified across its 1.6–5.5 V operating range and -40°C to +85°C temperature envelope.

What is the package type and pin count of the R5F104GCANA#20, and are there thermal or layout considerations?

The R5F104GCANA#20 uses a 48-pin HWQFN package measuring 7 × 7 mm with 0.5 mm pitch and an exposed die pad. The datasheet explicitly recommends connecting the exposed pad to VSS for optimal thermal dissipation and electrical stability. A 0.47–1 µF capacitor must be placed between REGC and VSS to stabilize the internal regulator. The pinout matches the RL78/G14 48-pin HWQFN configuration (Figure 1.3.6, Page 16), and the R5F104GCANA#20 shares mechanical and thermal characteristics with other devices in the same package family-enabling drop-in PCB reuse where flash/RAM requirements align.