Renesas R5F101PLAFB#V0

Overview

R5F101PLAFB#V0 from Renesas is a 100-pin LFQFP-0.5mm MCU in the RL78/G13 family, featuring 128 KB flash memory, 12 KB RAM, and no data flash. It operates from 1.6 V to 5.5 V, delivers 41 DMIPS at 32 MHz, and supports ultra-low-power modes (0.57 μA RTC+LVD). It targets battery-powered industrial control panels requiring deterministic real-time response and long-term firmware stability.

For engineers reviewing the R5F101PLAFB#V0 datasheet, R5F101PLAFB#V0 pinout, R5F101PLAFB#V0 application, or R5F101PLAFB#V0 equivalent, key selection criteria include its 100-pin LFQFP package with 64 general-purpose I/Os, integrated 10-bit 26-channel ADC, dual UART/LIN support, and hardware RTC with calendar function - all critical for embedded HMI and sensor-aggregation nodes.

Technical Context

The R5F101PLAFB#V0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock). Its memory map spans 1 MB address space, with on-chip RAM banked across four register banks (8×8-bit registers each).

It integrates a 12-bit interval timer, one real-time clock with alarm/calendar, eight 16-bit timers, three I²C channels, up to four UART/LIN interfaces, and a 10-bit A/D converter with internal 1.45 V reference and temperature sensor - all accessible without external components in industrial ambient conditions (−40°C to +85°C).

Key Specifications

Pinout & Package

Package: 100-pin LFQFP (14 × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F101PLAFB#V0, the #X0 variant offers identical electrical and functional behavior in tape format for automated manufacturing, while R5F100PLAFB#V0 adds 8 KB data flash - enabling robust parameter logging and firmware rollback without external memory, at the cost of slightly higher unit price and marginally increased power in data flash operations.

Availability

R5F101PLAFB#V0 is available at Aetrix Electronics and suitable for industrial HMI panels, smart energy meters, wireless sensor hubs, and factory I/O modules requiring stable component supply, long-lifecycle support, and guaranteed traceability.

Supply support for R5F101PLAFB#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, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G13 product line delivers true low-power performance (66 μA/MHz) and rich peripheral integration for cost-sensitive, battery-operated, and industrial-grade embedded control applications.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating of the R5F101PLAFB#V0?

The R5F101PLAFB#V0 operates at up to 32 MHz with a measured performance of 41 DMIPS. This benchmark reflects its RL78 CPU core's efficiency in executing real-world control algorithms, including interrupt handling, PWM generation, and serial protocol stacks - validated under typical industrial voltage and temperature conditions (1.6–5.5 V, −40°C to +85°C).

Does the R5F101PLAFB#V0 include an integrated temperature sensor and internal voltage reference?

Yes, the R5F101PLAFB#V0 integrates a calibrated bandgap temperature sensor and a 1.45 V internal reference voltage source. Both are directly accessible through the 10-bit ADC and usable for self-monitoring or sensor signal conditioning - eliminating the need for external reference ICs or discrete temperature sensing components in designs like thermal management controllers.

What low-power modes does the R5F101PLAFB#V0 support, and what is its lowest current consumption?

The R5F101PLAFB#V0 supports HALT, STOP, and SNOOZE modes. In STOP mode with only the real-time clock and low-voltage detector active, it draws just 0.57 μA - verified at VDD = 3.0 V and TA = 25°C. This enables decade-long operation on primary lithium batteries in applications such as utility meters and remote monitoring nodes.

How many serial communication interfaces does the R5F101PLAFB#V0 provide, and which protocols are supported?

The R5F101PLAFB#V0 provides up to four UART/LIN channels, three I²C interfaces, and two to eight CSI (Simplified SPI) channels. UART supports full-duplex asynchronous communication and LIN 2.2 physical layer compliance; I²C operates in standard/fast mode; CSI supports master-only SPI-like transfers with flexible clock polarity and phase control - all configurable independently per channel.

Is the R5F101PLAFB#V0 pin-compatible with other RL78/G13 variants in the same package?

Yes, the R5F101PLAFB#V0 shares identical pinout and footprint with all other 100-pin LFQFP RL78/G13 devices, including R5F100PLAFB#V0 and R5F101PLAFB#X0. This allows direct PCB reuse across variants differing only in flash configuration, data flash presence, or packaging - simplifying design scalability and inventory consolidation.