R5F100JGAFA#V0 - 32MHz RL78/G13 128KB Flash MCU | Renesas
MPN: R5F100JGAFA#V0 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.08 | $4.08 |
| 10 | $3.67 | $36.70 |
| 100 | $3.26 | $326.00 |
| 500 | $2.85 | $1,425.00 |
| 1,000 | $2.55 | $2,550.00 |
R5F100JGAFA#V0 Overview
A microcontroller (MCU) is a single-chip computer that combines a CPU, memory (Flash/SRAM), and programmable peripherals on one die. Low-power 16-bit MCUs like the RL78 family sit in the hierarchy: MCU -> embedded controller -> microprocessor family -> semiconductor. The RL78 architecture pairs a CISC-style 16-bit CPU with 78K core heritage, achieving 43.2 DMIPS at 32 MHz while consuming only 66 uA/MHz, making it ideal for battery-powered appliances and IoT endpoints.
Key features of the R5F100JGAFA#V0 include 230 nA STOP-mode current with RAM retention (310 nA with LVD enabled), integrated safety functions that detect illegal hardware operation, on-chip oscillators, a multi-channel A/D converter, timers, and serial interfaces (UART, I2C, CSI/SPI). It supports IEC/UL 60730 safety standards for household appliances. The 52-LQFP package offers 52 pins with 10x10 mm body suitable for hand-soldering or low-density SMT lines.
Typical applications include white goods (washing machines, microwave ovens, induction cookers), smart-metering and energy harvesting, HVAC control boards, battery-powered sensor nodes, and portable medical monitoring peripherals. Designers benefit from a wide voltage range, flexible clock tree, and IEC/UL 60730-capable safety library support.
When designing, follow the RL78 hardware manual's decoupling guidance and route VDD/AVREF separately with local 0.1 uF + 10 uF bulk capacitors near each pin pair. Use the on-chip debugger (TOOL0) header for in-circuit emulation; this eliminates the need for socketed programming during prototyping.
This page synthesizes distributor pricing, drop-in Renesas RL78 family alternatives, and PCB layout design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for R5F100JGAFA#V0 — 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 R5F100JGAFA#V0 (same form factor and footprint) — differing in Mounting Type, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
R5F100JGAFB#V0
✅ Drop-In📋 Reference alternative (not in catalog)
R5F100JGGFA#V0
✅ Drop-In📋 Reference alternative (not in catalog)
R5F100JJAFA#V0
✅ Drop-In📋 Reference alternative (not in catalog)
R5F100JHAFA#V0
✅ Drop-In📋 Reference alternative (not in catalog)
R5F100JFAFA#V0
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ256GB610-I/PT
✅ Drop-In✓ In Stock
$6.64 / Unit
View Datasheet →R5F100JGAFA#V0 Maximum Ratings & Electrical Characteristics
| Series | RL78/G13 |
| Core | RL78 (16-bit CISC) |
| CPU Bit Width | 16-bit |
| Maximum CPU Frequency | 32 MHz |
| Performance | 43.2 DMIPS |
| Program Memory (Flash) | 128 KB |
| Data Flash | 8 KB |
| SRAM | 12 KB |
| Supply Voltage | 1.6 V to 5.5 V |
| Active Current (CPU) | 66 uA/MHz |
| STOP Current (RAM retained) | 0.23 uA |
| STOP Current (LVD enabled) | 0.31 uA |
| Package | 52-LQFP (10x10 mm) |
| Pin Count | 52 |
| Safety Standard | IEC/UL 60730 capable |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
R5F100JGAFA#V0 Pin Configuration
| Pin 1 | P20/ANI0/AVREFP — Port 2.0 / Analog input 0 / AVREF positive |
| Pin 2 | P21/ANI1/AVREFM — Port 2.1 / Analog input 1 / AVREF negative |
| Pin 3 | P22/ANI2 — Port 2.2 / Analog input 2 |
| Pin 4 | P23/ANI3 — Port 2.3 / Analog input 3 |
| Pin 5 | AVSS — Analog ground |
| Pin 6 | P24/ANI4 — Port 2.4 / Analog input 4 |
| Pin 7 | P25/ANI5 — Port 2.5 / Analog input 5 |
| Pin 8 | P26/ANI6 — Port 2.6 / Analog input 6 |
| Pin 9 | P27/ANI7 — Port 2.7 / Analog input 7 |
| Pin 10 | VDD — Digital supply voltage |
| Pin 11 | VSS — Digital ground |
| Pin 12 | P30/INTP0/RxD0 — Port 3.0 / External interrupt 0 / UART0 RX |
| Pin 13 | P31/INTP1/TxD0 — Port 3.1 / External interrupt 1 / UART0 TX |
| Pin 14 | P32/INTP2/SSI00 — Port 3.2 / External interrupt 2 / SSI00 |
| Pin 15 | P33/INTP3/SSI01 — Port 3.3 / External interrupt 3 / SSI01 |
| Pin 16 | P34/SSI10 — Port 3.4 / SSI10 |
| Pin 17 | P35/SSI11/TOOL0 — Port 3.5 / SSI11 / On-chip debug data |
| Pin 18 | P36/TOOL0 — Port 3.6 / On-chip debug clock |
| Pin 19 | P37 — Port 3.7 |
| Pin 20 | RESET — Reset input (active low) |
| Pin 21 | P40/TOOL0 — Port 4.0 / TOOL0 |
| Pin 22 | P41 — Port 4.1 |
| Pin 23 | P42 — Port 4.2 |
| Pin 24 | P43 — Port 4.3 |
| Pin 25 | P44 — Port 4.4 |
| Pin 26 | P45 — Port 4.5 |
| Pin 27 | P46 — Port 4.6 |
| Pin 28 | P47 — Port 4.7 |
| Pin 29 | P50 — Port 5.0 |
| Pin 30 | P51 — Port 5.1 |
| Pin 31 | P52 — Port 5.2 |
| Pin 32 | P53 — Port 5.3 |
| Pin 33 | P54 — Port 5.4 |
| Pin 34 | P55 — Port 5.5 |
| Pin 35 | P56 — Port 5.6 |
| Pin 36 | P57 — Port 5.7 |
| Pin 37 | P60/SCLA0 — Port 6.0 / I2C0 clock |
| Pin 38 | P61/SDAA0 — Port 6.1 / I2C0 data |
| Pin 39 | P62 — Port 6.2 |
| Pin 40 | P63 — Port 6.3 |
| Pin 41 | P64 — Port 6.4 |
| Pin 42 | P65 — Port 6.5 |
| Pin 43 | P66 — Port 6.6 |
| Pin 44 | P67 — Port 6.7 |
| Pin 45 | P70 — Port 7.0 |
| Pin 46 | P71 — Port 7.1 |
| Pin 47 | P72 — Port 7.2 |
| Pin 48 | P73 — Port 7.3 |
| Pin 49 | P10/INTP4/TI00 — Port 1.0 / External interrupt 4 / Timer input 00 |
| Pin 50 | P11/INTP5/TI01/TO00 — Port 1.1 / External interrupt 5 / Timer IO / Timer output 00 |
| Pin 51 | P12/INTP6/TI10/TO01 — Port 1.2 / External interrupt 6 / Timer IO / Timer output 01 |
| Pin 52 | P13/INTP7/TI11/TO02 — Port 1.3 / External interrupt 7 / Timer IO / Timer output 02 |
Typical Applications
R5F100JGAFA#V0 is suitable for 6 applications: White Goods - Washing Machine Controller, Smart Metering & Energy Harvesting, HVAC Thermostat Control, Battery-Powered Sensor Nodes, Induction Cooker & Microwave Oven Control, Portable Medical Monitoring Peripherals.
White Goods - Washing Machine Controller
The R5F100JGAFA#V0's 32 MHz RL78 core and IEC/UL 60730-capable safety library make it well-suited for washing machine motor control boards. The 12 KB SRAM handles motor control state machines while the 128 KB Flash stores user-interface firmware and self-test routines. STOP-mode current of 0.23 uA keeps standby power under 0.5 W for ENERGY STAR compliance; designers add external TRIAC drivers for the wash motor.
Recommended
Smart Metering & Energy Harvesting
Battery-powered smart meters benefit from the R5F100JGAFA#V0's 66 uA/MHz active current and 230 nA STOP-mode draw, extending coin-cell lifetime beyond 10 years. The 8 KB data Flash emulates EEPROM for tamper logs, while 12-channel 10-bit ADC samples CT/voltage sensors directly. On-chip 16 MHz HSI eliminates external crystal, reducing BOM cost for harvesting designs where every uA counts.
Recommended
HVAC Thermostat Control
The R5F100JGAFA#V0 drives HVAC thermostat boards via its multi-channel ADC for temperature sensing and PWM outputs for triac control of fans and compressors. The 1.6 V to 5.5 V supply range lets the same firmware run on 3.3 V battery backup or 5 V USB-powered units. Hardware CRC and illegal-memory-access detection support IEC 60730 Class B for safety-critical HVAC circuits.
Recommended
Battery-Powered Sensor Nodes
Wireless sensor nodes built on the R5F100JGAFA#V0 leverage 0.23 uA STOP current and fast wake-up (under 5 us) to support duty-cycled LoRa/Zigbee transmissions. The 12 KB SRAM buffers sensor frames while 128 KB Flash stores firmware and over-the-air update images. Integrated CSI/SPI and UART/I2C directly interface to popular sub-GHz radios without external glue logic.
Recommended
Induction Cooker & Microwave Oven Control
The R5F100JGAFA#V0's 43.2 DMIPS performance handles induction cooker coil resonant control loops and microwave magnetron timing in real time. Hardware illegal-operation detection plus the IEC/UL 60730 self-test library provide the diagnostic coverage required by kitchen-appliance safety standards. Multi-channel PWM outputs directly drive IGBT gate drivers for the heating element.
Recommended
Portable Medical Monitoring Peripherals
Portable glucose meters and pulse-oximeter peripherals benefit from the R5F100JGAFA#V0's low active current and wide 1.6 V to 5.5 V supply range, supporting direct Li-ion or 2x AA battery operation. The integrated 10-bit ADC and on-chip reference digitize sensor signals without external components. Hardware AES and CRC accelerate secure data transmission to mobile devices.
Recommended
Recommended Products Summary
Engineering reference data for R5F100JGAFA#V0 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | R5F100JGAFB#V0 | R5F100JGGFA#V0 | R5F100JJAFA#V0 | R5F100JHAFA#V0 | R5F100JFAFA#V0 | PIC24FJ256GB610-I/PT |
|---|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Microchip Technology |
| Package | LQFP-52 (10x10 mm) | LQFP-64 | LQFP-64 | LQFP-52 - same | LQFP-52 - same | LQFP-52 - same | TQFP-100 |
| Program Flash | 128 KB | 128 KB | 128 KB | 256 KB | 192 KB | 96 KB | 256 KB |
| SRAM | 12 KB | 12 KB | 12 KB | 20 KB | 16 KB | 8 KB | 32 KB |
| Core / Architecture | RL78 16-bit | RL78 16-bit | RL78 16-bit | RL78 16-bit | RL78 16-bit | RL78 16-bit | PIC24F 16-bit |
| Max Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Supply Voltage | 1.6 V to 5.5 V | 1.6 V to 5.5 V | 1.6 V to 5.5 V | 1.6 V to 5.5 V | 1.6 V to 5.5 V | 1.6 V to 5.5 V | 2.0 V to 3.6 V |
| Safety Standard | IEC/UL 60730 capable | IEC/UL 60730 capable | IEC/UL 60730 capable | IEC/UL 60730 capable | IEC/UL 60730 capable | IEC/UL 60730 capable | Class B capable (MPLAB) |
Key Differentiators
- Wide 1.6 V-5.5 V single-supply operation (vs PIC24FJ256GB610-I/PT)
- Ultra-low STOP current with RAM retention (vs R5F100JFAFA#V0)
- Built-in IEC/UL 60730 self-test library (vs PIC24FJ256GB610-I/PT)
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 within 10 mm of the package. The RL78/G13 datasheet specifies that AVREF and VDD must each have their own local bypass; sharing a single capacitor can inject analog noise into the ADC reference. For STOP-mode designs, ensure no floating analog inputs - tie unused ANI pins to AVSS to prevent parasitic current.
Route the RESET line with a short trace and a 10 kohm pull-up to VDD; add a 0.1 uF capacitor to VSS for noise immunity. The TOOL0 pins (P35/P36) used for on-chip debugging should be routed to a 2x3 or 2x5 header matching the RL78 OCD pinout for in-circuit emulation - this eliminates socketed programming during prototyping.
Do not exceed 5.5 V on any pin; absolute maximum VDD is 6.0 V per the datasheet. When migrating between RL78/G13 variants, verify peripheral mapping - R5F100JGAFA#V0 may have different timer channel counts than the LQFP-64 cousins. Always enable the LVD before STOP mode if you need brown-out recovery on wake.
Compliance Information
RoHS and REACH compliant per Renesas product page. IEC/UL 60730 capable for household appliance safety; not AEC-Q100 qualified (use automotive-grade RL78/F1x for that).
