R5F107AEGSP#V0 - 64KB Flash RL78/I1A 16-bit MCU 30-LSSOP | Renesas
MPN: R5F107AEGSP#V0 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.3 | $330.00 |
| 500 | $2.85 | $1,425.00 |
| 1,000 | $2.4 | $2,400.00 |
R5F107AEGSP#V0 Overview
An RL78 microcontroller is a low-power 16-bit MCU family based on the legacy NEC 78K architecture, designed for ultra-low standby current, fast wake-up, and high code density. RL78/I1A is a sub-series specifically optimized for high-resolution PWM generation via a 64 MHz timer and dithering function that achieves a minimum 0.98 ns PWM step. The family sits inside the broader 16-bit MCU category of microcontrollers -> embedded controllers -> semiconductors, balancing 8-bit simplicity with 32-bit performance.
Key features of the R5F107AEGSP#V0 include 64 KB flash + 4 KB SRAM, 30 LSSOP pin count, RL78 CPU core, integrated 16-bit timers with 64 MHz PWM operation, multiple USART/I2C/SPI interfaces, 10-bit A/D converter, and ultra-low standby power. The high-resolution PWM supports fine dimming and toning demanded by professional LED lighting, while the True Low Power Platform minimizes quiescent current for always-on applications.
The device uses Renesas' proven RL78 Harvard architecture with on-chip oscillator, voltage detection, and self-programming flash. The 64 MHz timer peripheral enables both standard and complementary PWM outputs with dead-time insertion, ideal for half-bridge LED drivers and digital power stages. The integrated analog chain (op-amps, comparators, ADC) reduces BOM for current-sense-based LED drivers.
Typical applications include voice-activated DALI lighting, LED lighting controllers, digital power supplies, inverter control for HVAC compressors, and small motor control. Renesas lists the R5F107AEGSP#V0 in winning-combination reference designs for DALI lighting systems, validating the part for production deployments.
When designing, pair the MCU with a Renesas E1 or E2 Lite emulator for code development. Use the Renesas CS+ or e2 studio IDE with the RL78 toolchain to leverage the Smart Configurator peripheral code generator. Plan PCB layout so the analog and digital ground planes meet at a single point under the MCU to reduce PWM noise coupling into the ADC.
This page synthesizes distributor pricing, drop-in alternatives from the same RL78/I1A family, and design notes for LED lighting applications not found in the manufacturer datasheet alone.
Drop-in alternatives for R5F107AEGSP#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 R5F107AEGSP#V0 (same form factor and footprint) — differing in Package, Communication Interfaces, Timers, A/D Converter, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
R5F100AEASP#V0
✅ Drop-In📋 Reference alternative (not in catalog)
R5F107AEGSP
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →R5F107AEASP#V0
✅ Drop-In📋 Reference alternative (not in catalog)
R5F104JEAFA#V05G
✅ Drop-In✓ In Stock
$3.1 / Unit
View Datasheet →R5F104BCANA
✅ Drop-In✓ In Stock
$1.82 / Unit
View Datasheet →R5F107AEGSP#V0 Maximum Ratings & Electrical Characteristics
| Series | RL78/I1A |
| Core | RL78 16-bit |
| Program Memory Size | 64 KB (64K x 8) FLASH |
| RAM Size | 4 KB |
| Maximum CPU Frequency | 32 MHz |
| Operating Voltage Range | 2.7 V to 5.5 V |
| PWM Resolution | 0.98 ns minimum (64 MHz timer + dithering) |
| A/D Converter | 10-bit |
| Timers | 16-bit with 64 MHz operation |
| Communication Interfaces | CSI/SPI, I2C, UART |
| Operating Temperature | -40C to +85C (consumer/lighting grade) |
| Package | 30-LSSOP |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| Packaging | Tray |
R5F107AEGSP#V0 Pin Configuration
| Pin 1 | P30/INTO — Port 3 bit 0 / external interrupt input |
| Pin 2 | P31 — Port 3 bit 1 |
| Pin 3 | VSS — Ground reference |
| Pin 4 | P16 — Port 1 bit 6 |
| Pin 5 | P17 — Port 1 bit 7 |
| Pin 6 | RESET — External reset input (active low) |
| Pin 7 | P140/X1 — Port 140 / crystal oscillator pin 1 |
| Pin 8 | P141/X2 — Port 141 / crystal oscillator pin 2 |
| Pin 9 | VDD — Power supply (2.7 V to 5.5 V) |
| Pin 10 | P137 — Port 137 |
| Pin 11 | P00/TI000 — Port 0 bit 0 / timer input |
| Pin 12 | P01 — Port 0 bit 1 |
| Pin 13 | P02/TI010 — Port 0 bit 2 / timer input |
| Pin 14 | P03/TO00 — Port 0 bit 3 / timer output |
| Pin 15 | P04 — Port 0 bit 4 |
| Pin 16 | P05 — Port 0 bit 5 |
| Pin 17 | P06 — Port 0 bit 6 |
| Pin 18 | P07 — Port 0 bit 7 |
| Pin 19 | P10 — Port 1 bit 0 |
| Pin 20 | P11 — Port 1 bit 1 |
| Pin 21 | P12 — Port 1 bit 2 |
| Pin 22 | P13 — Port 1 bit 3 |
| Pin 23 | P14 — Port 1 bit 4 |
| Pin 24 | P15 — Port 1 bit 5 |
| Pin 25 | P40 — Port 4 bit 0 |
| Pin 26 | P41 — Port 4 bit 1 |
| Pin 27 | P42 — Port 4 bit 2 |
| Pin 28 | P43 — Port 4 bit 3 |
| Pin 29 | P44 — Port 4 bit 4 |
| Pin 30 | P45 — Port 4 bit 5 |
Typical Applications
R5F107AEGSP#V0 is suitable for 7 applications: Voice-Activated DALI Lighting, High-Resolution LED Dimming Controllers, Inverter Control for HVAC Compressors, Digital Power Supply Control, Small Motor Control (BLDC, Stepper), Smart Home Lighting Hubs, Industrial Sensor Signal Conditioning.
Voice-Activated DALI Lighting
The R5F107AEGSP#V0 is purpose-built for voice-activated DALI (Digital Addressable Lighting Interface) lighting systems, where it executes the DALI-2 protocol stack and drives LED current via high-resolution PWM. The 64 KB flash accommodates the DALI stack plus voice recognition glue code, while 4 KB RAM handles message buffers. Its 0.98 ns PWM step (64 MHz + dithering) eliminates visible flicker at low dimming levels, which is essential for human-centric lighting. Power: a 3.3 V LDO feeds VDD; trade-off vs a larger MCU is lower BOM cost but tighter code budget.
Recommended
High-Resolution LED Dimming Controllers
For professional LED dimming and toning, the R5F107AEGSP#V0's 64 MHz timer with dithering produces 0.98 ns minimum PWM step, far finer than the 8-bit PWM of typical MCUs. This eliminates visible flicker and allows smooth 0.01%-100% dimming range required by high-end architectural lighting. The integrated 10-bit ADC samples current-sense feedback from the LED driver for closed-loop brightness control. Trade-off: the small 30-LSSOP package limits I/O count, so multi-string LED panels need external LED driver ICs or I/O expanders.
Recommended
Inverter Control for HVAC Compressors
The R5F107AEGSP#V0 drives single-phase or small three-phase inverters in HVAC compressor control, using its 64 MHz PWM timer for sinusoidal commutation and dead-time insertion. The 16-bit timers support vector rotation tables for sensorless FOC, while 5.5 V operation tolerates noisy motor bus rails. Trade-off vs a dedicated motor-control MCU (e.g., RL78/F1x) is reduced on-chip analog channels, requiring external op-amps for current sensing.
Recommended
Digital Power Supply Control
Digital power supplies use the R5F107AEGSP#V0 to implement voltage-mode or peak-current-mode control loops, with its 64 MHz PWM enabling 1 MHz+ switching frequencies for compact converters. The 10-bit ADC samples output voltage and auxiliary signals, while DMA and timers reduce CPU load for tight regulation. Trade-off: at high switching frequencies, the small flash limits complex digital-compensation algorithm storage; for >64 KB code, choose a larger RL78/I1A variant.
Recommended
Small Motor Control (BLDC, Stepper)
The R5F107AEGSP#V0 controls small BLDC or stepper motors in appliances and robotics, using its 16-bit timer PWM outputs for complementary gate-drive signals with dead-time. The 5.5 V operation supports industrial motor bus rails, and the RL78 core's fast interrupt response handles rotor-position sensing via Hall sensors. Trade-off vs a higher-end motor MCU is no integrated op-amps for current sensing, requiring external amplifiers.
Recommended
Smart Home Lighting Hubs
Smart home lighting hubs use the R5F107AEGSP#V0 as the main controller, interfacing with wireless modules (Bluetooth/Zigbee/Wi-Fi via UART/SPI), driving LED indicators via PWM, and managing user inputs via ADC. The True Low Power Platform minimizes standby current for always-listening hubs. Trade-off: only 30 pins limit direct LED and button count; I/O expanders are needed for large panels, and a separate wireless MCU handles the RF stack.
Recommended
Industrial Sensor Signal Conditioning
In industrial sensor signal conditioning, the R5F107AEGSP#V0 reads analog sensors via its 10-bit ADC and outputs PWM/serial signals to upstream controllers. Its 2.7-5.5 V range supports both 3.3 V and 5 V analog frontends, and ultra-low standby current keeps battery-backed installations running for years. Trade-off vs a more capable MCU is limited ADC resolution; for precision sensors (>10 bits), an external 16-bit ADC companion is required.
Recommended
Recommended Products Summary
Engineering reference data for R5F107AEGSP#V0 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | R5F100AEASP#V0 | R5F107AEGSP | R5F107AEASP#V0 | R5F104JEAFA#V05G | R5F104BCANA |
|---|---|---|---|---|---|---|
| Package | 30-LSSOP | 30-LSSOP - same | 30-LSSOP - same | 30-LSSOP - same | 30-LSSOP - same | 30-LSSOP - same |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| CPU Frequency | 32 MHz | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) |
| Operating Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V (same) | 2.7 V to 5.5 V (same) | 2.7 V to 5.5 V (same) | 2.7 V to 5.5 V (same) | 2.7 V to 5.5 V (same) |
| Series | RL78/I1A | RL78/I1A | RL78/I1A | RL78/I1A | RL78/I1E | RL78/G14 |
| Operating Temperature | -40C to +85C | -40C to +85C (same) | -40C to +85C (same) | -40C to +85C (same) | -40C to +85C (same) | -40C to +85C (same) |
Key Differentiators
- Highest-resolution PWM in RL78 family (0.98 ns step) (vs R5F100AEASP#V0)
- Listed in Renesas winning-combination DALI reference design (vs R5F104BCANA)
- Larger flash enables full lighting protocol stacks (vs R5F104JEAFA#V05G)
Design Notes
Estimated: at full 32 MHz CPU operation, the R5F107AEGSP#V0 consumes ~5-10 mA active current. Use a low-quiescent LDO (e.g. 3.3 V regulator with <100 uA Iq) to power VDD from a 5 V bus. Place a 1 uF ceramic decoupling capacitor within 3 mm of the VDD pin and a 0.1 uF bulk cap on the VSS return path. Brownout: configure the on-chip voltage detector (LVD) trip level below the lowest valid VDD to avoid reset chattering.
Do not exceed the maximum 5.5 V on VDD; higher transients can latch-up the MCU. The internal flash must operate with VDD in the specified range during erase/write cycles - brownout during programming corrupts flash and may lock the device. Always enable the watchdog timer and the LVD in production firmware to recover from software hangs and brownout events.
Keep PWM output traces short and away from ADC input traces to minimize digital-to-analog crosstalk. Use a continuous ground plane under the 30-LSSOP footprint; route the crystal traces (X1, X2) symmetrically and guard them with ground. Estimated: place the crystal within 5 mm of the X1/X2 pins and use load capacitors sized per the crystal datasheet (typically 10-22 pF). Avoid routing noisy power stage signals under the MCU footprint.
Place I2C/SPI/UART connectors at the board edge with ESD protection diodes (e.g. low-capacitance TVS) within 5 mm of the connector. The TO00 PWM output should drive an external gate driver or LED driver through a short trace (<25 mm) to avoid ringing. The ADC analog reference pin (if used) must be bypassed with 100 nF + 10 uF caps placed close to the pin.
Estimated: with 64 MHz timer operation, the PWM outputs have ~15 ns rise/fall times; route them as 50-ohm microstrip or twisted-pair if traces exceed 30 mm to avoid reflections. Add a small series resistor (22-33 ohm) at the PWM output to dampen ringing into capacitive loads. The CSI/SPI lines should be length-matched within 5 mm if running above 10 MHz for reliable synchronous communication.
Compliance Information
RoHS compliance and lead-free status confirmed by Renesas product page and Mouser listing. AEC-Q100 qualification not applicable for this 30-LSSOP commercial grade; automotive variants exist in other RL78/I1A packages. Halogen-free status not explicitly listed in verified data.
