Renesas Electronics America Inc R5F104MLGFB#50

RL78/G14 R5F104MLGFB#50 Microcontroller Product Summary

The RL78/G14 R5F104MLGFB#50 microcontroller, produced by Renesas Electronics Corporation, is a highly flexible 16-bit MCU designed with an emphasis on low-power consumption, robust I/O options, and integration of vital analog and digital peripherals. It belongs to the RL78 family, targeting a diverse range of consumer and industrial applications requiring a balance of performance, scalability, and efficiency. Supporting operation at up to 32MHz and featuring 512KB on-chip flash, this model is physically realized in an 80-pin LQFP package (12 × 12 mm), making it well-suited for embedded designs demanding both significant memory and ample I/O fabric.

Core Functions and System Layout of RL78/G14 R5F104MLGFB#50

At the heart of the RL78/G14 R5F104MLGFB#50 is a CISC core with three-stage pipeline architecture, providing up to 44 DMIPS (Dhrystone MIPS) at maximum clock frequency. The core supports rapid cycling, ranging from 0.03125 μs/instruction at 32MHz to 30.5 μs/instruction at 32.768kHz, facilitating both high-throughput and low-speed, ultra-low-power operation.

The memory subsystem comprises 512KB of code flash (with block sizes of 1KB), 8KB data flash (supporting up to 1,000,000 rewrite cycles), and 48KB of on-chip RAM, enabling advanced code, data management, and in-field programmability features. Security functions allow for selective block erase and rewriting prohibitions.

Low-power operation is a cornerstone of the RL78/G14 architecture, realized through modes such as HALT, STOP, and SNOOZE, yielding operating currents as low as 66 μA/MHz and standby currents down to 0.60 μA (RTC+LVD active). Power supply versatility (VDD from 1.6V to 5.5V) broadens applicability across a spectrum of designs, from battery-powered portable devices to mains-powered industrial controllers.

The device’s I/O system is extensive: multiple banks of general-purpose 8-bit registers, support for up to 92 I/O ports (with open-drain and TTL options), and the ability to interface multiple voltage levels (1.8/2.5/3V), facilitate easy connectivity to modern logic and analog domains.

Comprehensive Electrical Characteristics and Performance Data of RL78/G14 R5F104MLGFB#50

The RL78/G14 R5F104MLGFB#50 is engineered to operate over wide supply and temperature ranges. For industrial variants, ambient temperature operation is guaranteed from –40°C up to +105°C (TA), with full electrical specifications covering robust industrial and consumer applications.

Absolute maximum ratings dictate supply voltage up to 6.5V (all voltages referred to VSS = 0V). The device must be operated within the published DC and AC characteristics for each pin; exceeding these ratings risks device degradation.

Dynamic operation is equally robust: the device can switch between modes, trading speed for minimal current draw as dictated by the application. Operating currents provided exclude or include peripheral modules, depending on mode and clocking configuration, making power estimations in real applications straightforward.

On-chip oscillators are selectable from 1MHz to 64MHz (with accuracy of ±1% at VDD = 1.8V–5.5V, TA = –20°C to +85°C). Efficient power-on reset and multiple selectable-level low-voltage detection circuits ensure fail-safe startup and brown-out protection for critical embedded systems.

Peripheral Interfaces, Communication Functions, and Integration Features of RL78/G14 R5F104MLGFB#50

Peripheral integration in the RL78/G14 R5F104MLGFB#50 covers most essential interface and control needs:

Serial interfaces: Up to 10 I²C/simplified I²C channels, 3-4 UART/UART(LIN) channels, and 8 CSI/SPI channels enable connectivity to a broad array of sensors, communication modules, and actuators.

Event Link Controller and Data Transfer Controller: Directly link event signals between 19–26 different peripherals and automate data movements, minimizing CPU load and enhancing real-time response.

Flexible timers: Multiple 16-bit (8–12 channels) and 12-bit timers, real-time clock with 99-year calendar and alarm functions, and a programmable watchdog timer ensure thorough support for time-critical tasks.

Analog integration: Up to 20 channels of 8/10-bit A/D input (with internal reference and temperature sensor), two 8-bit D/A output channels (0V–VDD), and up to two comparators, each supporting several operation and reference modes.

I/O and Interface: Up to 92 IO lines, configurable as open-drain, TTL input, or with internal pull-up resistors, offer adaptability in mixed-voltage board designs. Built-in key interrupt, on-chip buzzer, and clock output functions further reduce total bill of materials required for most control systems.

Package Variants and Physical Specifications for RL78/G14 R5F104MLGFB#50

The R5F104MLGFB#50 is available in an 80-pin LQFP package (12 × 12 mm, 0.5 mm pitch), which provides balanced density and footprint for mid-to-large embedded designs. The package supports high pin counts for richer peripheral access and is well-documented with precise pin identification and footprint specifications, aiding in error-free PCB layout. For applications demanding reduced EMI or enhanced reliability, recommendations for VSS/EVSSO pin layout and isolation are clearly supported in package notes.

Environmental Standards and Reliability Aspects for RL78/G14 R5F104MLGFB#50

The RL78/G14 R5F104MLGFB#50 is compliant with Moisture Sensitivity Level (MSL) 3, allowing for 168 hours of floor life at controlled humidity and temperature. Environmental robustness is further reflected in temperature classifications for both consumer and industrial grades, with the “G” variants rated up to +105°C operation.

Flash endurance allows for 1,000,000 rewrite cycles (data flash, typical), far exceeding the needs of most field-upgrade scenarios. Power and reset circuitry includes comprehensive brownout, over-voltage protection, and voltage slope specifications, ensuring data and state retention in challenging supply situations. RAM data retention and flash programming characteristics follow industry reliability benchmarks.

Alternative or Compatible Models for RL78/G14 R5F104MLGFB#50

When selecting the RL78/G14 R5F104MLGFB#50 for a new or existing design, engineers may benefit from considering alternative models within the RL78/G14 family that feature different pin counts, memory capacities, or specialized temperature ratings. Models such as R5F104xD, R5F104xE, R5F104xJ, and R5F104xL offer varying flash and RAM sizes alongside package and pinout diversity, allowing a designer to scale performance and footprint as necessary.

Additionally, some peripheral subsets or specific footprint constraints may be better served by RL78/G1x or RL78/G13 series microcontrollers, which share architectural or peripheral similarities while providing other trade-offs in voltage, speed, or feature set. Reviewing the full RL78/G14 device list and comparing key parameters such as supply voltage range, ambient temperature, and pinout compatibility is recommended during the model selection process.

Conclusion

: Applicability and Engineering Considerations for RL78/G14 R5F104MLGFB#50

The Renesas RL78/G14 R5F104MLGFB#50 stands out as a versatile and scalable MCU, excelling in power-limited, cost-sensitive, or highly integrated designs across consumer and industrial applications. With architectural flexibility, a rich set of analog/digital peripherals, robust communication options, and extensive family coverage for migration or design reuse, it is a leading choice among 16-bit embedded controllers. Procurement teams and engineers will find the detailed package and part information, paired with scalable offerings and strong reliability credentials, make the RL78/G14 R5F104MLGFB#50 a sound foundation for both existing and next-generation designs. Careful consideration of required peripherals, memory, and environmental conditions will ensure an optimal device match and long product lifecycle.