R5F100GEAFB#10
R5F100GEAFB#10 - 16-Bit RL78/G13 MCU, 64KB Flash, 48-LFQFP | Renesas
The Renesas Electronics R5F100GEAFB#10 is a 16-bit RL78/G13 general-purpose microcontroller built on a true low-power platform, featuring 64KB code flash, 32 MHz CPU operation (43.2 DMIPS), and a 48-pin LFQFP (7x7 mm) package. It integrates rich on-chip peripherals including a 12-bit A/D converter, data flash, multiple timers, communication interfaces, and a safety-function unit that monitors illegal hardware operation, making it suitable for IEC/UL 60730-compliant household appliances.
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile working memory (RAM), and peripheral interfaces into one package. Within the broader semiconductor taxonomy, the R5F100GEAFB#10 belongs to the 16-bit MCU category (a mid-range between 8-bit entry devices and 32-bit ARM Cortex-M cores), and specifically to the RL78 sub-family (a proprietary Renesas low-power ISA succeeding the legacy 78K and R8C families) targeting ultra-low-power embedded applications.
Key specifications include: 66 uA/MHz active current, 230 nA STOP-mode standby current, 1.6 V to 5.5 V supply range, 4KB data flash and 4KB SRAM, hardware multiplier/divider, multiple low-power modes (HALT, STOP, SNOOZE), and an on-chip oscillator. The device also includes a real-time clock, watchdog timer, 12-bit SAR ADC, and serial interfaces (CSI/UART/I2C) that reduce external BOM and PCB area.
Architecturally, the RL78 uses a three-stage pipelined CISC core with a 16-bit ALU and 24-bit address space, paired with separate code-flash and data-flash regions and a tightly-coupled memory controller. The CSI (Clocked Serial Interface) and UART can run concurrently from different clocks, while SNOOZE mode allows selective peripheral wake-up without full CPU restart, enabling typical current consumption under 1 uA in always-on sensor systems.
Typical applications include white-goods control boards (washing machines, dishwashers, microwave ovens), battery-powered sensor nodes, HVAC controllers, motor-control front-ends, smart meters, and industrial sensor hubs. The combination of 32 MHz throughput, low STOP-mode current, and built-in functional safety support makes it a strong fit for mains-powered appliances that must remain quiescent for long intervals while retaining rapid response to user input or sensor events.
When designing with this MCU, observe the supply-voltage derating: ensure the 5.5 V absolute maximum is not exceeded by transients on VDD, place decoupling capacitors within 3 mm of each power pin, and use the E1/E2 on-chip debug interface for in-circuit flash programming. The device ships in Pb-free 48-LFQFP and supports the standard Renesas RL78 toolchain (CC-RL compiler, e2 studio IDE).
This page consolidates Renesas product-page specifications, distributor pricing, and verified drop-in alternative options to help engineers select and source R5F100GEAFB#10 with confidence.
USD $1.52
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