Renesas R5F101LKAFA#30

Overview

R5F101LKAFA#30 from Renesas is a 64-pin LQFP-0.65mm, 32-bit RL78/G13 microcontroller with 384 KB flash, 8 KB data flash, 24 KB RAM, 1.6–5.5 V operation, and ultra-low-power consumption (66 μA/MHz active, 0.57 μA RTC+LVD). It targets battery-powered industrial control, sensor nodes, and smart metering systems requiring high integration and long runtime.

For engineers reviewing the R5F101LKAFA#30 datasheet, R5F101LKAFA#30 pinout, R5F101LKAFA#30 application, or R5F101LKAFA#30 equivalent, key selection criteria include its 64-pin LQFP package, absence of on-chip data flash (R5F101x series), 32-bit RL78 CPU core with 41 DMIPS @ 32 MHz, integrated RTC with calendar/alarm, and support for multiple serial interfaces including UART/LIN, I²C, and CSI.

Technical Context

The R5F101LKAFA#30 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 μs min @ 32 MHz to 30.5 μs @ 32.768 kHz). It supports HALT, STOP, and SNOOZE low-power modes with dedicated on-chip oscillators - high-speed (±1.0% accuracy) and subsystem clocks.

It integrates 8-channel 16-bit timers, one 12-bit interval timer, one real-time clock with calendar and alarm, one watchdog timer, 10-bit A/D converter with up to 26 channels, and three serial interface types (CSI, UART/LIN, I²C) across up to 10 total channels. DMA controller provides 4 channels with 2-clock transfers between SFR and RAM.

Key Specifications

Pinout & Package

64-pin LQFP (12 × 12 mm, 0.65-mm pitch), JEDEC standard PLQP0064JA-A footprint. Compatible with automated SMT assembly and standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R5F100LKAFA#30 and RL78/G14 R5F11LKAFA#30, the R5F101LKAFA#30 offers optimal balance of cost, power efficiency, and integration for resource-constrained industrial nodes-retaining full peripheral compatibility while eliminating data flash overhead where not needed.

Availability

R5F101LKAFA#30 is available at Aetrix Electronics and suitable for smart metering, industrial sensor networks, home appliance control, and automotive body electronics requiring stable component supply and long-term manufacturability.

Supply support for R5F101LKAFA#30 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The RL78/G13 family delivers true low-power performance for general-purpose embedded control-designed specifically for cost-sensitive, battery-operated, and thermally constrained applications demanding high integration and long service life.

FAQ

What is the maximum operating frequency of the R5F101LKAFA#30?

The R5F101LKAFA#30 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 41 DMIPS performance. External crystals up to 20 MHz are also supported via the main clock input (P30), but the internal oscillator's ±1.0% accuracy eliminates need for external timing components in most applications.

Does the R5F101LKAFA#30 include on-chip data flash memory?

No, the R5F101LKAFA#30 does not include on-chip data flash memory. As indicated by the "101" prefix in the part number per Renesas documentation, this variant omits data flash-unlike the "100" series (e.g., R5F100LKAFA#30) which includes 8 KB. Code flash remains at 384 KB for program storage.

What package type and footprint does the R5F101LKAFA#30 use?

The R5F101LKAFA#30 uses a 64-pin LQFP package with 12 × 12 mm body and 0.65-mm lead pitch (JEDEC standard PLQP0064JA-A). It is supplied in tray packaging (#30 suffix) and is compatible with standard reflow soldering profiles and automated optical inspection.

Can the R5F101LKAFA#30 operate from a single 1.8-V supply?

Yes, the R5F101LKAFA#30 supports operation from 1.6 V to 5.5 V, making it fully functional at 1.8 V. At this voltage, the maximum operating frequency is reduced per datasheet specifications, but all peripherals-including 10-bit ADC, RTC, and UART-remain operational, enabling ultra-low-voltage battery designs.

How many serial communication interfaces does the R5F101LKAFA#30 support?

The R5F101LKAFA#30 supports up to 10 serial channels across three protocols: CSI (2–8 channels), UART/LIN (2–4 channels, with LIN physical layer support), and I²C/Simplified I²C (3–10 channels). Channel count depends on pin multiplexing and configuration; the 64-pin package enables full utilization of these interfaces simultaneously.