Renesas R5F101AFASP#V0

Overview

R5F101AFASP#V0 from Renesas is a 30-pin, 16 KB flash, data-flash-free RL78/G13 16-bit microcontroller with ultra-low-power operation (66 μA/MHz), 1.6–5.5 V supply range, and integrated RTC/LVD. It delivers 41 DMIPS at 32 MHz and targets battery-powered industrial sensors and smart metering interfaces.

For engineers reviewing the R5F101AFASP#V0 datasheet, R5F101AFASP#V0 pinout, R5F101AFASP#V0 application, or R5F101AFASP#V0 equivalent, key selection criteria include its 30-pin LSSOP package, absence of on-chip data flash, -40°C to +85°C industrial-grade temperature rating, and support for HALT/STOP/SNOOZE low-power modes in resource-constrained embedded control designs.

Technical Context

The R5F101AFASP#V0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction execution time (0.03125 μs at 32 MHz to 30.5 μs at 32.768 kHz). It integrates a 12-bit interval timer, real-time clock with calendar/alarm, and watchdog timer driven by a dedicated low-speed on-chip oscillator.

Peripheral integration includes up to 26-channel 8/10-bit ADC with internal 1.45 V reference and temperature sensor, 3–10-channel I²C/Simplified I²C, 2–4-channel UART/LIN, and 2–8-channel CSI (SPI-compatible serial interface), all operating within the same 1.6–5.5 V voltage range as the core.

Key Specifications

Pinout & Package

Package: 30-pin plastic LSSOP (7.62 mm, 0.65-mm pitch), JEDEC MS-013AC variant, RoHS-compliant, surface-mountable with standard reflow profile.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F101AFASP#V0, R5F101AGASP#V0 offers scalable memory for future feature expansion, while R5F100AFASP#V0 provides essential data retention capability - both share identical pinout, package, and low-power architecture, enabling board-level reuse where memory requirements evolve.

Availability

R5F101AFASP#V0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering interfaces, and home appliance controllers requiring stable component supply across multi-year production cycles.

Supply support for R5F101AFASP#V0 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, and power solutions for industrial, automotive, and IoT markets.

The RL78/G13 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated embedded systems requiring long service life and robust peripheral integration.

FAQ

What is the maximum operating frequency of the R5F101AFASP#V0?

The R5F101AFASP#V0 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 41 DMIPS performance. Its minimum instruction execution time is 0.03125 μs under this condition, and it supports lower frequencies down to 32.768 kHz for ultra-low-power RTC operation - all verified in the R01DS0131EJ0380 datasheet.

Does the R5F101AFASP#V0 include on-chip data flash memory?

No, the R5F101AFASP#V0 does not include on-chip data flash memory. Per the RL78/G13 family part numbering convention (where "101" denotes no data flash), this variant provides 16 KB of code flash only. Applications requiring non-volatile parameter storage must use external EEPROM or select an alternative like R5F100AFASP#V0, which includes 4 KB data flash.

What package type and pin count does the R5F101AFASP#V0 use?

The R5F101AFASP#V0 uses a 30-pin plastic LSSOP package (7.62 mm body width, 0.65-mm pitch), identified by the "SP" suffix and "#V0" tray packaging code. This JEDEC-standard package supports automated assembly and provides adequate I/O (up to 25 N-ch open-drain pins) for compact industrial control designs.

What low-power modes are supported by the R5F101AFASP#V0?

The R5F101AFASP#V0 supports HALT, STOP, and SNOOZE modes. In STOP mode with only RTC and LVD active, it draws just 0.57 μA - enabling decade-long operation on primary lithium batteries. SNOOZE mode permits background ADC conversions while retaining CPU context, and HALT mode reduces active current to 66 μA/MHz for dynamic power scaling.

Is the R5F101AFASP#V0 qualified for industrial temperature operation?

Yes, the R5F101AFASP#V0 is rated for industrial ambient temperatures from -40°C to +85°C, indicated by the "A" suffix in its part number per Renesas' RL78/G13 ordering guide. It meets this specification across full voltage range (1.6–5.5 V) and is validated for continuous operation without derating in HVAC controls, factory automation, and utility infrastructure applications.