R5F100LJGFB#30 - 16-bit RL78/G13 MCU 256KB Flash LQFP-64 | Renesas
MPN: R5F100LJGFB#30 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.5 | $4.50 |
| 10 | $3.95 | $39.50 |
| 100 | $3.42 | $342.00 |
| 500 | $2.99 | $1,495.00 |
| 1,000 | $2.71 | $2,710.00 |
| 2,500 | $2.45 | $6,125.00 |
R5F100LJGFB#30 Overview
A microcontroller (MCU) is a single-chip computer that combines a CPU, memory (Flash/RAM), and programmable peripherals into one device. The RL78/G13 line targets general-purpose embedded applications and sits within the broader hierarchy of 16-bit microcontrollers -> microcontrollers -> embedded processors -> semiconductor ICs, all of which fall under the larger power-management-aware computing umbrella. The Renesas RL78 architecture is the successor to the legacy 78K and R8C lines, optimized for ultra-low-power household, industrial and sensor-driven applications.
Key features that differentiate this 256 KB part from sibling RL78/G13 members include 20 KB of on-chip SRAM, 4 KB data Flash (with background and block-erase capability), an on-chip 32 MHz oscillator plus 15 kHz and 125 kHz low-speed oscillators, an 8-channel 10-bit successive-approximation ADC, multiple 16-bit timers, a real-time clock, a DMA controller (4 channels), and an IEC/UL 60730-compliant safety core (illegal-Memory-access detection). Communication peripherals include CSI/SPI, I2C and UART channels, supporting LIN and other fieldbus bridges via software.
The RL78 core uses a three-stage pipelined CISC-RISC hybrid with a 1-byte instruction fetch and dedicated register banks, which is why DMIPS/MHz is unusually high (1.35 DMIPS/MHz) compared with classic 8051 cores. The on-chip voltage regulator supports operation down to 1.6 V, allowing direct connection to a 2x AA alkaline battery stack with no external LDO and retaining data in STOP mode for years.
Typical uses for the R5F100LJGFB#30 are household appliances (washing machine control boards, induction cookers, microwave ovens), smart metering, sensor conditioning, battery-powered IoT nodes, white goods user interfaces, and industrial HVAC controllers where the IEC 60730 functional-safety requirement and STOP current budget dominate the design.
Design consideration: when migrating from a smaller Flash variant (e.g. R5F100LEAFB or R5F100LF), confirm the bank-to-pin mapping for the 64-LFQFP code, since the 64-pin package has three fewer I/O than the 80- and 100-pin versions of the same family.
This page synthesises distributor pricing, drop-in RL78/G13 alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for R5F100LJGFB#30 — 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 R5F100LJGFB#30 (same form factor and footprint) — differing in Core Architecture, Operating Temperature, Package, ADC, Communication Peripherals.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
R5F100LJGFB#V0
✅ Drop-In📋 Reference alternative (not in catalog)
R5F100LJAFB#30
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
R5F100LGAFB#30
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
R5F100LKAFB#30
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18F46K22-I/PT
✅ Drop-In✓ In Stock
$2.32 / Unit
View Datasheet →PIC32MX550F256L-I/PT
✅ Drop-In✓ In Stock
$3.78 / Unit
View Datasheet →R5F100LJGFB#30 Maximum Ratings & Electrical Characteristics
| Family | RL78/G13 |
| Core Architecture | RL78 (16-bit CISC/RISC hybrid) |
| CPU Speed | 32 MHz |
| DMIPS Performance | 43.2 DMIPS |
| Code Flash | 256 KB |
| Data Flash | 4 KB |
| On-chip SRAM | 20 KB |
| Package | 64-LFQFP (10x10 mm) |
| Supply Voltage | 1.6 V to 5.5 V |
| Active Current | 66 uA/MHz |
| Standby (STOP) Current | 230 nA typical |
| Operating Temperature | -40C to +105C |
| ADC | 10-bit SAR, multi-channel |
| Timers | 16-bit timer array |
| Communication Peripherals | CSI/SPI, I2C, UART |
| DMA Channels | 4 |
| Functional Safety | IEC/UL 60730 compliant |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| MSL Level | 3 (168 hours) |
R5F100LJGFB#30 64-lfqfp (10x10 mm) Pin Configuration Guide
Pin configuration for R5F100LJGFB#30 (64-lfqfp (10x10 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for R5F100LJGFB#30.
Refer to the datasheet for full pin configuration.
Typical Applications
R5F100LJGFB#30 is suitable for 7 applications: Household Appliance Control Boards, Smart Electricity and Gas Metering, Battery-Powered IoT Sensor Nodes, Industrial HVAC and Building Controllers, User Interface and Keypad Controllers, Sensor Conditioning and Analog Front-End Hubs, Portable Healthcare and Wellness Devices.
Household Appliance Control Boards
The Renesas R5F100LJGFB#30 is a textbook match for white-goods main control boards including washing machines, induction cookers and microwave ovens, where the IEC/UL 60730 hardware self-test support directly satisfies the household-appliance functional-safety standard required by EU regulation. Its 66 uA/MHz active current keeps thermal dissipation negligible on a fully populated PCB, while 230 nA STOP-mode standby lets the controller sleep indefinitely between user actuations and wake from a keypad or rotary encoder interrupt. The 256 KB Flash holds a Zigbee or sub-GHz protocol stack plus a UI state machine, with the 20 KB SRAM providing enough headroom for a small RTOS or cooperative scheduler.
Recommended
Smart Electricity and Gas Metering
The R5F100LJGFB#30's 230 nA STOP current with RTC retention makes it ideal for smart-meter data loggers that must operate for 10+ years from a primary lithium cell without battery replacement. The on-chip 10-bit ADC and DMA controller (4 channels) capture pulsed sensor inputs from energy-measurement ICs without CPU intervention, allowing the CPU to remain in deep sleep for the vast majority of the metering duty cycle. Hardware CRC and the illegal-memory-access detector meet the metering integrity requirements expected of utility-grade devices, while the 1.6 V minimum supply allows direct operation from a depleted cell down to end-of-life voltage.
Recommended
Battery-Powered IoT Sensor Nodes
IoT sensor nodes for HVAC monitoring, leak detection or environmental sensing depend on the R5F100LJGFB#30's 66 uA/MHz active and 230 nA STOP numbers to stretch battery life beyond typical wireless-sensor-network deployment horizons (often 5-10 years on 2x AA). The 256 KB Flash hosts a Zigbee, BLE-MAC or LoRaWAN stack alongside sensor-acquisition logic; 20 KB SRAM buffers sensor data between radio transmissions. The wide 1.6-5.5 V supply window lets designers choose alkaline, NiMH or LiSOCl2 primary cells without adding a boost regulator - shrinking BOM cost and quiescent-loss overhead.
Recommended
Industrial HVAC and Building Controllers
Industrial HVAC controllers and楼宇自动化 hubs benefit from the R5F100LJGFB#30's -40C to +105C industrial temperature range and its array of UART/SPI/I2C peripherals that bridge to digital temperature, humidity and pressure sensors. The 32 MHz performance and DMA channels handle multiple Modbus, BACnet or KNX protocol stacks simultaneously on a single IC, while the built-in safety self-tests detect clock-loss events that would otherwise corrupt fieldbus communications. The 256 KB Flash provides ample room for full Modbus RTU/TCP and BACnet MS/TP stacks with margin for vendor-specific extensions.
Recommended
User Interface and Keypad Controllers
User-interface boards with capacitive touch keypads, rotary encoders and TFT or segment LCDs use the R5F100LJGFB#30 to consolidate keypad scanning, beeper control and LCD drive on a single MCU. The 64-pin LQFP provides enough GPIO to scan a 6x6 matrix plus drive a 4x40 segment LCD or small TFT without an external driver. Low STOP-mode current is critical because the human-machine interface typically idle-listens for user input; the 230 nA figure allows a battery-backed UI to outlive the host device it controls.
Recommended
Sensor Conditioning and Analog Front-End Hubs
Multi-sensor data-acquisition boards use the R5F100LJGFB#30 to sample 8-channel 10-bit ADC inputs at up to 1 us conversion rate and stream results over SPI to a higher-tier processor or directly through on-chip UART. The DMA controller offloads repetitive sampling so the CPU can remain in sleep state up to 99 % of the duty cycle, keeping average current below 500 uA in many real-world deployments. Built-in hardware CRC lets the MCU validate sensor frames without software overhead, while the 256 KB Flash supports on-device calibration tables for sensor linearisation.
Recommended
Portable Healthcare and Wellness Devices
Battery-powered pulse oximeters, glucometers and personal-health monitors benefit from the R5F100LJGFB#30's combination of wide supply voltage (1.6-5.5 V), low STOP current (230 nA) and on-chip 10-bit ADC with hardware averaging. This makes the part a strong fit for non-AEC-Q100 medical wearables where long battery life and small BOM outweigh the need for automotive-grade qualification. The 256 KB Flash accommodates an FDA-style Class II firmware image plus a Bluetooth Low Energy stack, while 20 KB SRAM buffers waveform data during BLE transmissions.
Recommended
Recommended Products Summary
Engineering reference data for R5F100LJGFB#30 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | R5F100LJGFB#V0 | R5F100LJAFB#30 | R5F100LGAFB#30 | R5F100LKAFB#30 | PIC18F46K22-I/PT | PIC32MX550F256L-I/PT |
|---|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Microchip Technology | Microchip Technology |
| Package | 64-LFQFP (10x10) | 64-LFQFP (10x10) - same | 64-LFQFP (10x10) - same | 64-LFQFP (10x10) - same | 64-LFQFP (10x10) - same | 64-TQFP - same footprint | 64-TQFP - same footprint |
| Core Architecture | RL78 16-bit (32 MHz / 43.2 DMIPS) | RL78 16-bit (32 MHz / 43.2 DMIPS) | RL78 16-bit (32 MHz) | RL78 16-bit (32 MHz) | RL78 16-bit (32 MHz) | PIC18 8-bit (16 MIPS) | MIPS32 32-bit (80 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 | 2.3 V to 5.5 V | 2.3 V to 3.6 V |
| Operating Temperature | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +125C | -40C to +85C |
| Functional Safety | IEC/UL 60730 | IEC/UL 60730 | IEC/UL 60730 | IEC/UL 60730 | IEC/UL 60730 | None | None |
Key Differentiators
- 256 KB Flash + 20 KB SRAM within a true 16-bit RISC architecture (vs PIC18F46K22-I/PT)
- Built-in IEC/UL 60730 functional-safety self-tests (vs PIC32MX550F256L-I/PT)
- Industry-leading STOP-mode standby current of 230 nA (vs PIC32MX550F256L-I/PT)
Design Notes
Estimated: at 32 MHz full-speed operation the RL78/G13 core draws ~2.1 mA from 3.3 V (66 uA/MHz), giving roughly 7 mW dissipation. Add 1-3 mA for ADC, UART and timer activity in active mode. STOP mode drops total IC current to 230 nA (per datasheet) while retaining RTC and selected interrupts. Design the decoupling network with a 0.1 uF X7R ceramic within 2 mm of each VDD/VSS pair and a bulk 4.7-10 uF tantalum or ceramic near the IC; this prevents VDD ringing on deep-sleep wake-up events.
For the 64-LFQFP (10x10 mm) package, route TOOL0 (single-wire debug) to a 2x1 header with ESD protection (consider 5.6 V TVS such as PDZ5.6B) and avoid crossover traces beneath the exposed pad. The exposed thermal pad on the LQFP is electrically connected to VSS internally - stitch it to the ground plane with at least 4 thermal vias in a 0.3 mm pitch grid for optimal heat dissipation in fanless appliance designs.
Do not skip the VOLTAGE-REGULATOR stabilisation capacitor on VDD; the on-chip regulator requires a 0.47-1 uF capacitor on the dedicated REGC pin (see RL78/G13 datasheet) and failure to fit it will prevent startup. Avoid using the ADC's input channels above their absolute-maximum rating relative to AVREF; for direct thermistor connections, add a 100 ohm series resistor and 10 nF cap to suppress transients. Finally, do not disable watchdog in production firmware - the IEC 60730 self-test framework depends on periodic watchdog reset to detect CPU lockup.
Keep the 32 MHz high-speed traces (crystal pins X1/X2 and analogue AVREF/AVSS) short and away from switching nodes; place the 32 MHz crystal within 5 mm of the IC and surround it with a ground guard ring to reduce radiated emissions below the 30 MHz CISPR 11 limit. For battery-powered designs, route the analog AVREF pin through its own LDO and bypass cap to avoid noise coupling from digital VDD into the ADC conversion results.
Compliance Information
RoHS compliant per Mouser/DigiKey listing. Not AEC-Q100 qualified - choose Renesas RH850 family for automotive.
