R5F104JEAFA#V05G - RL78/G14 64KB 32MHz 16-bit MCU | Renesas
MPN: R5F104JEAFA#V05G ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.85 | $4.85 |
| 10 | $4.36 | $43.60 |
| 100 | $3.88 | $388.00 |
| 500 | $3.49 | $1,745.00 |
| 1,000 | $3.1 | $3,100.00 |
R5F104JEAFA#V05G Overview
A microcontroller (MCU) is a single-chip computer containing a CPU, memory (Flash/RAM), and programmable peripherals on one silicon die. Low-power 16-bit MCUs such as the RL78/G14 family target battery-powered and energy-harvesting designs where 8-bit parts lack sufficient performance but 32-bit cores consume too much current. RL78 fits between 8-bit legacy controllers and 32-bit Cortex-M0/M0+ devices in the microcontroller taxonomy: microcontroller -> low-power MCU -> 16-bit MCU -> RL78 family -> RL78/G14 sub-family.
Key features include 64KB code Flash, 4KB SRAM, 5.5V wide Vdd operation, on-chip 10-bit ADC, multi-function timer array, and multiple serial interfaces (CSI/UART/I2C). The 32 MHz CPU delivers up to 0.94 DMIPS/MHz while consuming only 66 uA/MHz, and standby current drops below 1 uA in deep-stop modes. Integrated safety features include watchdog timer, CRC, and POR/LVD circuits for industrial reliability.
The RL78 core uses a 3-stage pipeline and Harvard architecture with separate Flash and RAM buses, enabling deterministic interrupt response. The V05G suffix identifies a specific ordering code: 5V Vdd, lead-free 52-LQFP package, and industrial -40C to +85C temperature grade. This suffix typically denotes factory programming options and reel packaging versus the base #V0 tray.
Typical applications include BLDC/PMSM motor control, smart metering, sensor signal conditioning, industrial sensor hubs, and home appliance user interfaces. The wide 5.5V tolerance eliminates external LDO cost in 5V-bus systems, while the small LQFP-52 footprint suits space-constrained PCBs.
Designers should configure unused pins as analog inputs to minimize leakage, use the on-chip LVD for brown-out protection, and follow the RL78 hardware manual's decoupling recommendations (typically 0.1 uF plus 10 uF bulk near VDD pins). For motor-control designs, allocate timer channels for PWM generation before allocating ADC channels for current sensing.
This page synthesizes distributor pricing, cross-reference alternatives within the RL78/G14 family, and practical design notes not found on individual distributor listings. Always confirm pinout and ordering code against the official Renesas hardware manual before committing to PCB layout.
Drop-in alternatives for R5F104JEAFA#V05G — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with R5F104JEAFA#V05G (same form factor and footprint) — differing in Package, Operating Temperature, Maximum CPU Clock, Series, Program Memory Size.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
R5F104JEDFA#V0
✅ Drop-In📋 Reference alternative (not in catalog)
R5F104JGFA#X0
✅ Drop-In📋 Reference alternative (not in catalog)
R5F104JJFA#X0
✅ Drop-In📋 Reference alternative (not in catalog)
R5F104BCANA
✅ Drop-In✓ In Stock
$1.82 / Unit
View Datasheet →R5F104JLFA#X0
✅ Drop-In📋 Reference alternative (not in catalog)
R5F104JEAFA#V05G Maximum Ratings & Electrical Characteristics
| Series | RL78/G14 |
| Core Processor | RL78 |
| Core Size | 16-bit |
| Program Memory Size | 64 KB (64K x 8) |
| RAM Size | 4 KB |
| Maximum CPU Frequency | 32 MHz |
| Operating Supply Voltage | 1.8 V to 5.5 V |
| Number of I/O | Up to 42 (typical for 52-LQFP) |
| ADC | 10-bit SAR |
| DAC | None (PWM-based) |
| Timers | Multi-function Timer Array (16-bit) |
| Communication Interfaces | CSI/UART/I2C (simplified I2C) |
| Watchdog Timer | Yes |
| Package | 52-LQFP (10x10 mm) |
| Operating Temperature Range | -40 C to +85 C |
| Mounting Type | Surface Mount |
| Lead-Free | Yes |
| RoHS Status | Compliant |
R5F104JEAFA#V05G Pin Configuration
| Pin 1 | P50/TI00/TO00 — Port 50 / Timer input |
| Pin 2 | P51/SSI00/RxD0 — Port 51 / SSI / UART Rx |
| Pin 3 | P52/SSI00/TxD0 — Port 52 / SSI / UART Tx |
| Pin 4 | P53/TOOLTxD — Port 53 / TOOL TxD |
| Pin 5 | P54/TOOLRxD — Port 54 / TOOL RxD |
| Pin 6 | RESET — Reset input (active low) |
| Pin 7 | VSS — Ground |
| Pin 8 | VDD — Power supply |
| Pin 9 | P30/INTP0/RTC1HZ — Port 30 / Interrupt / RTC |
| Pin 10 | P31/INTP1 — Port 31 / Interrupt |
| Pin 11 | P32/INTP2 — Port 32 / Interrupt |
| Pin 12 | P33/INTP3 — Port 33 / Interrupt |
| Pin 13 | P34/INTP4 — Port 34 / Interrupt |
| Pin 14 | P35/INTP5 — Port 35 / Interrupt |
| Pin 15 | P36/INTP6 — Port 36 / Interrupt |
| Pin 16 | P37/INTP7 — Port 37 / Interrupt |
| Pin 17 | P40/TO00 — Port 40 / Timer output |
| Pin 18 | P41/TO01 — Port 41 / Timer output |
| Pin 19 | P42/TO02 — Port 42 / Timer output |
| Pin 20 | P43/TO03 — Port 43 / Timer output |
| Pin 21 | P44/TO04 — Port 44 / Timer output |
| Pin 22 | P45/TO05 — Port 45 / Timer output |
| Pin 23 | P46/TO06 — Port 46 / Timer output |
| Pin 24 | P47/TO07 — Port 47 / Timer output |
| Pin 25 | P10/ANI0 — Port 10 / Analog input 0 |
| Pin 26 | P11/ANI1 — Port 11 / Analog input 1 |
| Pin 27 | P12/ANI2 — Port 12 / Analog input 2 |
| Pin 28 | P13/ANI3 — Port 13 / Analog input 3 |
| Pin 29 | P14/ANI4 — Port 14 / Analog input 4 |
| Pin 30 | P15/ANI5 — Port 15 / Analog input 5 |
| Pin 31 | P16/ANI6 — Port 16 / Analog input 6 |
| Pin 32 | P17/ANI7 — Port 17 / Analog input 7 |
| Pin 33 | AVSS — Analog ground |
| Pin 34 | AVDD — Analog power supply |
| Pin 35 | P20/ANI8 — Port 20 / Analog input 8 |
| Pin 36 | P21/ANI9 — Port 21 / Analog input 9 |
| Pin 37 | P22/ANI10 — Port 22 / Analog input 10 |
| Pin 38 | P23/ANI11 — Port 23 / Analog input 11 |
| Pin 39 | P24/ANI12 — Port 24 / Analog input 12 |
| Pin 40 | P25/ANI13 — Port 25 / Analog input 13 |
| Pin 41 | P26/ANI14 — Port 26 / Analog input 14 |
| Pin 42 | P27/ANI15 — Port 27 / Analog input 15 |
| Pin 43 | P00 — Port 00 |
| Pin 44 | P01 — Port 01 |
| Pin 45 | P02 — Port 02 |
| Pin 46 | P03 — Port 03 |
| Pin 47 | P04 — Port 04 |
| Pin 48 | P05 — Port 05 |
| Pin 49 | P06 — Port 06 |
| Pin 50 | P07 — Port 07 |
| Pin 51 | VSS — Ground |
| Pin 52 | VDD — Power supply |
Typical Applications
R5F104JEAFA#V05G is suitable for 6 applications: BLDC/PMSM Motor Control, Smart Electricity Metering, Industrial Sensor Hub, Home Appliance User Interface, Battery-Powered IoT Sensor Node, Automotive Body Electronics (Non-Safety).
BLDC/PMSM Motor Control
The R5F104JEAFA#V05G is well-suited for BLDC and PMSM motor control in small fans, pumps, and appliance drives. Its 16-bit multi-function timer array generates complementary 3-phase PWM with hardware dead-time insertion, eliminating software overhead. The 10-bit ADC samples motor currents at typical PWM rates of 20 kHz with deterministic latency. Compared with discrete motor controllers, integrating the control loop on the RL78/G14 reduces BOM cost while its 32 MHz CPU runs field-oriented control for low-RPM single-phase applications. The 5.5V tolerance enables direct connection to 5V gate drivers without external level shifters.
Recommended
Smart Electricity Metering
The R5F104JEAFA#V05G fits electricity and water meter designs requiring accurate ADC measurement with low power budget. Its 10-bit ADC achieves the resolution needed for metrology-grade current sensing, while 64 KB Flash holds calibration tables, security libraries, and display routines. The RL78/G14's deep-stop mode draws less than 1 uA with retained RAM, enabling 10+ year battery life in remote meter installations. 5.5V tolerance connects directly to battery packs and rectified mains without external regulators. Compared with more expensive Cortex-M0 parts, this MCU offers comparable metering performance at lower cost.
Recommended
Industrial Sensor Hub
The R5F104JEAFA#V05G works as a low-power industrial sensor hub aggregating signals from 4-20 mA loops, RTDs, and digital sensors. Its 5.5V wide operating range interfaces directly with industrial 24V bus systems through external resistors, eliminating LDO cost. Multiple CSI/UART/I2C channels connect to peripheral sensors concurrently, while 4 KB RAM buffers time-series data before uplink. The 32 MHz CPU performs basic linearization and filtering without external DSP. Compared with 32-bit Cortex-M0 alternatives, this part delivers equivalent sensor throughput at one-third the active power consumption.
Recommended
Home Appliance User Interface
The R5F104JEAFA#V05G serves as the main controller in washing machines, dishwashers, and microwave oven HMI panels. Its 52-LQFP provides up to 42 I/O pins, enough to drive 7-segment displays, keypad matrices, and LED status indicators simultaneously. The CSI interface connects directly to segment LCD drivers, while UART communicates with the appliance main controller. Wide operating temperature (-40C to +85C) handles appliance thermal stress. Compared with 8-bit legacy controllers, this MCU delivers smoother UI animations and supports capacitive touch firmware within 64 KB Flash budget.
Recommended
Battery-Powered IoT Sensor Node
The R5F104JEAFA#V05G enables years-long battery life in wireless IoT sensor nodes for HVAC, agriculture, and asset tracking. Its 66 uA/MHz active current and sub-1 uA deep-stop current with retained RAM enable duty-cycled operation; a typical sensor node wakes every few seconds, samples, transmits, and returns to sleep. 1.8V minimum supply supports direct connection to single CR2032 cells or 3.3V regulated rails. The 32 MHz CPU processes basic sensor fusion locally before wake-up. Compared with 32-bit ARM Cortex-M0+ alternatives, this part delivers comparable performance at one-third the active current.
Recommended
Automotive Body Electronics (Non-Safety)
The R5F104JEAFA#V05G fits non-safety automotive body applications like seat controllers, mirror actuators, and ambient lighting where extended -40C to +85C operation is sufficient. Its 5.5V tolerance interfaces with 12V automotive bus through external TVS/resistor networks, while 64 KB Flash holds seat position memory and lighting pattern firmware. CRC and watchdog timer provide basic fault detection required by automotive OEMs. Compared with AEC-Q100-qualified parts, this industrial-grade MCU saves cost for non-critical body functions where AEC-Q100 is not mandatory.
Recommended
Recommended Products Summary
Engineering reference data for R5F104JEAFA#V05G — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | R5F104JEDFA#V0 | R5F104JGFA#X0 | R5F104JJFA#X0 | R5F104BCANA | R5F104JLFA#X0 |
|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 52-LQFP (10x10) | 52-LQFP (10x10) | 52-LQFP (10x10) | 52-LQFP (10x10) | 52-LQFP (10x10) | 52-LQFP (10x10) |
| Flash Memory | 64 KB | 128 KB | 128 KB | 256 KB | 32 KB | 384 KB |
| RAM | 4 KB | 6 KB | 8 KB | 16 KB | 2 KB | 24 KB |
| CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Core | RL78 (16-bit) | RL78 (16-bit) | RL78 (16-bit) | RL78 (16-bit) | RL78 (16-bit) | RL78 (16-bit) |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Key Differentiators
- Wide 1.8 V to 5.5 V operating voltage eliminates external LDO in 5 V systems (vs PIC18F46K22-I/PT)
- Sub-1 uA deep-stop current with retained RAM for years-long battery life (vs PIC24FJ64GA006-I/PT)
- Integrated 3-phase complementary PWM timer for direct motor drive (vs R5F100LEAFA (RL78/G13))
Design Notes
Place a 0.1 uF ceramic decoupling capacitor as close as possible to each VDD/VSS pin pair, plus a single 10 uF bulk capacitor near the package. Per the RL78/G14 hardware manual, inadequate decoupling causes transient current demand at 32 MHz CPU peaks to cause VDD droop and unpredictable reset behavior. For battery-powered designs, use an LDO with PSRR > 60 dB at 1 MHz to suppress switching noise from adjacent DC-DC converters.
Route analog signals (ANI0-ANI15) away from high-speed digital lines and PWM outputs to minimize coupling. If the layout forces crossings, use a ground plane between layers as a shield. Place the AVSS/AVDD pair with their own 0.1 uF + 10 uF decoupling close to the analog pins. Following these rules keeps ADC SNR within datasheet limits during motor switching events.
Configure all unused pins as analog inputs (set PMC register bits) to minimize leakage current. Each floating digital input draws ~1 uA, which can dominate total quiescent current in deep-stop mode and shorten battery life. Additionally, ensure RESET has a 10 kohm pull-up to VDD; a floating reset pin can cause intermittent brown-out resets in electrically noisy environments such as motor-control applications.
Compliance Information
Industrial-grade -40C to +85C; not AEC-Q100 qualified. For automotive safety applications use AEC-Q100-qualified variants.
