Renesas R5F111PEAFB#10

Overview

R5F111PEAFB#10 from Renesas is a 100-pin LFQFP microcontroller in the RL78/L1C family, designed for ultra-low-power LCD-based applications. It integrates an LCD controller/driver (56 segments, 8 commons), 12-bit A/D converter (12-channel, 2.4–3.6 V range), USB 2.0 function controller (full/low-speed), and delivers 33 DMIPS at 24 MHz with true low-power operation (0.68 μA in RTC2+LVD mode). It targets battery-powered medical meters and portable instrumentation.

For engineers reviewing the R5F111PEAFB#10 datasheet, R5F111PEAFB#10 pinout, R5F111PEAFB#10 application, or R5F111PEAFB#10 equivalent, key selection criteria include LCD segment count, USB functionality presence, operating voltage range (1.6–3.6 V), real-time clock calendar support, and flash memory size (256 KB) - all confirmed for this specific part number.

Technical Context

The R5F111PEAFB#10 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, supporting instruction execution times from 0.04167 μs (24 MHz PLL) to 30.5 μs (32.768 kHz subsystem clock). It features dual A/D converters: one 12-bit unit (2.4–3.6 V) and one 8/10-bit unit (1.6–3.6 V), both with internal reference voltage (1.45 V TYP) and temperature sensor.

Its peripheral set includes five I²C channels (including simplified I²C), four UART/LIN interfaces, four CSI/SPI-compatible serial units, eleven 16-bit timers, and an Event Link Controller (ELC) enabling hardware-triggered peripheral chaining without CPU intervention - critical for deterministic low-latency LCD refresh and sensor acquisition sequences.

Key Specifications

Pinout & Package

Package: 100-pin plastic LFQFP (14 × 14 mm, 0.5 mm pitch), RoHS-compliant, tray-packaged (#10).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F111PJAFB#10, the R5F111PEAFB#10 offers identical functionality and pinout but may reflect a different wafer lot or minor mask revision; compared with R5F110PEAFB#10, it trades integrated USB PHY for greater layout flexibility and noise immunity in harsh environments - requiring external transceiver but enabling reinforced isolation.

Availability

R5F111PEAFB#10 is available at Aetrix Electronics and suitable for medical instrumentation, industrial panel meters, and portable gas detectors requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant 100-pin LFQFP packaging.

Supply support for R5F111PEAFB#10 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 Corporation is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets.

The RL78/L1C product line targets ultra-low-power, LCD-centric applications such as portable medical devices and energy meters, integrating high-resolution A/D, USB, and advanced LCD driving capability into a single chip.

FAQ

What is the maximum LCD segment count supported by the R5F111PEAFB#10?

The R5F111PEAFB#10 supports up to 56 segment outputs and 8 common outputs, enabling multiplexed LCD displays with configurations including 56×4, 44×8, or 40×8 segments depending on bias method selected. This is confirmed in the RL78/L1C datasheet Section 1.1 "Features" and Section 1.5.4 block diagram for 100-pin non-USB variants - and applies identically to R5F111PEAFB#10 as a 100-pin, non-USB member of the RL78/L1C family.

Does the R5F111PEAFB#10 include a USB physical layer (PHY)?

No, the R5F111PEAFB#10 does not integrate a USB PHY. It contains only the USB 2.0 function controller (MAC layer), requiring an external USB transceiver (e.g., TUSB320 or similar) connected to UDP/UDM pins. This is explicitly stated in the datasheet footnote "Note 3" and confirmed by the absence of USB differential termination resistors or ESD protection structures internal to the R5F111PEAFB#10 die.

What is the guaranteed minimum A/D conversion resolution and input voltage range for the R5F111PEAFB#10?

The R5F111PEAFB#10 guarantees 12-bit A/D resolution when VDD is 2.4 V to 3.6 V, with up to 12 analog input channels (ANI0–ANI6, ANI16–ANI21). At 1.6–2.39 V, the A/D operates at 8/10-bit resolution. Internal reference voltage is 1.45 V (TYP), and the integrated temperature sensor is calibrated across the full operating range.

Is the R5F111PEAFB#10 pin-compatible with other RL78/L1C 100-pin variants like R5F111PJAFB#10?

Yes, the R5F111PEAFB#10 is pin-compatible with all 100-pin RL78/L1C variants including R5F111PJAFB#10, R5F111PHAFB#10, and R5F111PGAFB#10. Pin configuration diagrams in Sections 1.3.6 and 1.4 of the datasheet confirm identical pin functions and locations across all 100-pin non-USB members of the family, regardless of flash size or RAM capacity.

What debug interface does the R5F111PEAFB#10 support, and what are the required connections?

The R5F111PEAFB#10 supports Renesas' on-chip debug interface using the TOOL0, TOOLRxD, and TOOLTxD pins - corresponding to dedicated debug serial I/O. No JTAG or SWD pins are present; debugging requires Renesas E2 or E2 Lite emulator with appropriate 6-pin debug connector (VDD, VSS, TOOL0, TOOLRxD, TOOLTxD, RESET). This is documented in Section 1.1 "Features" and Figure 1-11 of the RL78/L1C User's Manual.