Specifications
R5F104MJGFB is a 16-bit ultra-low-power general-purpose microcontroller from Renesas RL78/G14 series, optimized for industrial control, household appliances and battery-powered embedded terminal products with abundant on-chip peripherals and wide voltage working range.
Part Number Definition
R5F104M represents the core model of RL78/G14 series MCU with complete peripheral modules. MJ corresponds to 256KB program Flash, 24KB RAM and integrated analog peripheral configuration. GFB stands for commercial temperature grade and 80-pin LFQFP surface mount package, factory default tape-and-reel packaging for automated SMT assembly.
Core and Memory Parameters
It adopts RL78 16-bit three-stage pipeline CISC architecture, with maximum operating frequency up to 32MHz and computing performance of 44 DMIPS. The running power consumption is only 66μA per megahertz to realize low-power operation. Built-in 256KB main program Flash for storing application firmware, together with 8KB data Flash which can be simulated as EEPROM to store configuration parameters and historical data offline. On-chip 24KB high-speed SRAM supports data retention under low-power stop mode, greatly prolonging the standby time of battery-driven equipment.
Power Supply and Clock Architecture
The chip supports single wide-range power supply from 1.6V to 5.5V, compatible with lithium battery power supply and standard industrial 5V power supply circuits. It integrates internal high-speed main oscillator, low-speed sub oscillator and independent watchdog oscillator, which can work stably without external crystal oscillators to simplify peripheral circuit layout. Multiple power management modes including HALT, STOP and SNOOZE are equipped, which can dynamically switch working states according to task demands to minimize static power consumption. Independent power-on reset and low-voltage detection circuits are embedded to improve system anti-interference ability during power fluctuation.
Integrated Peripheral Resources
Communication interfaces include multi-channel UART supporting LIN bus protocol, multiple groups of CSI simplified SPI and I2C bus interfaces, plus DMA controller for data transmission without CPU intervention to reduce main processor resource occupation. Analog peripherals contain 17-channel 10-bit high-precision ADC and 2-channel 8-bit DAC, with built-in analog voltage comparator for signal threshold judgment. Multiple groups of 16-bit timer arrays can output multi-channel PWM signals for motor speed regulation, LED dimming and switching power supply control. It carries Event Link Controller to realize hardware linkage between peripherals without CPU intervention, improving response speed of trigger tasks. Up to 74 configurable general-purpose I/O pins are led out, with optional internal pull-up resistors and external interrupt trigger function. Independent watchdog timer is integrated to prevent program runaway and realize automatic system reset.
Package and Mechanical Specifications
Package type is 80-pin LFQFP low-profile quad flat leaded package with dimension of 12mm × 12mm and pin pitch of 0.5mm. Moisture Sensitivity Level is MSL 3, and reflow soldering must be completed within 168 hours after opening the vacuum moisture-proof package. The lead frame structure features excellent solderability and mechanical shock resistance, suitable for mass PCB patch production.
Environmental and Compliance Requirements
Operating temperature range covers -40℃ to +85℃, adapting to indoor consumer electronics and conventional industrial field working environments. The device is fully lead-free and complies with RoHS and REACH environmental protection standards without restricted hazardous substances. Optimized EMC design strengthens immunity to electromagnetic interference, ensuring stable operation under complex electromagnetic noise conditions.
Typical Application Scenarios
Household appliance main control boards such as air conditioners, washing machines and kitchen electrical equipment Industrial field data acquisition sensors, small PLC modules and signal conversion terminals Automotive auxiliary electronic products, LIN bus slave control units and vehicle-mounted small control modules Portable measuring instruments, wearable devices and battery-powered handheld monitoring equipment Intelligent lighting controllers, smart home panels and low-power IoT wireless sensing nodes
LXB Semicon supplies original Renesas R5F104MJGFB RL78/G14 16-bit low-power microcontroller
