Model No: R5F104FEAFP

Renesas Electronics Corporation R5F104FEAFP

Manufacturer: Renesas Electronics
SEMICON NO.: R5F104FEAFP
Package: 44-LQFP
Stock: In stock
Description: MCU 16-bit RL78/G14 32 MHz 64 KB Flash
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 Mfr      Renesas Electronics 
 Product Family     RL78/G14
 Device Type  16-bit Microcontroller (MCU)
 Core Processor RL78 (16-bit CISC architecture)
 Core Size   16-Bit
 Maximum CPU Speed  32 MHz
 Program Memory (Flash)  64 KB (6 4K x 8)
 RAM (SRAM) 5.5 KB (5.5K x 8)
 Data Flash / EEPROM 4 KB (4K x 8)
 Supply Voltage (VDD) 1.6 V to 5.5 V
 Oscillator Type   Internal 
 Number of I/Os 31 (General Purpose)
 ADC Resolution 10-bit
 DAC Resolution 8-bit
 Operating Temperature   -40°C to +85°C
 Package 44-LQFP
 Mounting Type
 Surface Mount
 Compliance    
 RoHS Compliant
R5F104FEAFP 16-bit RL78 MCU 
The R5F104FEAFP is a 16-bit RL78/G14 general-purpose mcu housed in a 44-pin LQFP surface-mount package. As a member of the low-power, high-performance RL78 CISC family, it integrates 64 KB of code flash, 4 KB of data flash, and 5 KB of RAM, runs up to 32 MHz from a single 1.6 V to 5.5 V supply, and delivers 51.2 DMIPS with 40 I/O ports, making it a balanced control engine for motor-control, industrial, and metering applications that demand both ultra-low power and deterministic real-time response . The chip carries a -40 C to +85 C ambient rating, an on-chip high-accuracy oscillator (±1%), a power-on reset, and a voltage detector.
Typical application scenarios for the R5F104FEAFP center on cost-sensitive, power-conscious embedded systems that still require meaningful computational throughput. It is widely deployed in motor-control modules for appliances, power tools, and HVAC fans, as well as in industrial automation controllers, smart-metering equipment (electricity, water, gas), battery-powered portable instruments, building and home automation nodes, and consumer devices where 5 V tolerant I/O and low standby current extend battery life. The device's three-phase motor-control PWM, coupled with the comparator-based zero-cross detection and high-speed ADC, makes it especially suitable for BLDC inverter drives, while the rich UART/I2C/SPI set lets it act as a system aggregator that bridges sensors, displays, communication modems, and host processors in a single chip. 
Alternativemicrocontroller solutions
1. R5F104BEAFP: A 32-pin LQFP member of the RL78/G14 family with 64 KB flash and 5.5 KB RAM, ideal for designs that need the same code size but a smaller pin count and PCB footprint.
2. R5F104JJGFA: A 52-pin LQFP RL78/G14 device with 256 KB flash, 3.3 V/5 V operation, and a larger memory map, suited to projects migrating from 64 KB to 256 KB without leaving the RL78 ecosystem.
3. R5F100FEAFP: An RL78/G13 44-pin LQFP microcontroller with 64 KB flash that is listed as a fully compatible functional alternative to the R5F104FEAFP, requiring no circuit modification when substituting.
4. R5F104LGAFB: A 64-pin LQFP RL78/G14 with 128 KB flash and 3.3 V/5 V operation, positioned as an upward-scaling option when more I/O and code space are needed while preserving the RL78/G14 peripheral set.