Renesas R5F10NPJDFB#10

Overview

R5F10NPJDFB#10 from Renesas is a 100-pin LFQFP RL78/I1C 16-bit MCU with 256 KB flash, 16 KB RAM, hardware AES-128/192/256, independent-power-supply RTC, and 24-bit ΔΣ A/D converter - designed for electric AMI power meter applications requiring secure metering, ultra-low-power operation (1.9–5.5 V), and integrated LCD driving.

For engineers reviewing the R5F10NPJDFB#10 datasheet, R5F10NPJDFB#10 pinout, R5F10NPJDFB#10 application, or R5F10NPJDFB#10 equivalent, this page delivers verified technical context, real-world use cases in utility metering, validated pin mapping for 100-pin LFQFP, and confirmed alternatives for secure low-power embedded designs.

Technical Context

The R5F10NPJDFB#10 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and selectable minimum instruction time (0.03125 µs at 32 MHz PLL clock). It integrates dual A/D subsystems: four-channel 24-bit ΔΣ ADC (with AVRT/AREGC/AVCM support) and six-channel 10-bit SAR ADC (VDD = 1.9–5.5 V).

Its power architecture includes HALT/STOP/SNOOZE modes, on-chip POR/LVD/RTCPOR circuits, and independent VRTC supply enabling calendar-based RTC operation during main power loss. The AES engine supports GCM/ECB/CBC modes and operates without external key storage dependency.

Key Specifications

Pinout & Package

Package: 100-pin plastic LFQFP (14 × 14 mm, 0.5 mm pitch), industrial-grade (TA = −40°C to +85°C), tray packaging (#10 variant).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10NPGDFB#10 and R5F10NMJDFB#10, the R5F10NPJDFB#10 provides maximum on-chip memory (256 KB/16 KB) and full 100-pin I/O/LCD capability - making it the highest-capacity option in the RL78/I1C family for feature-rich AMI implementations requiring long-term firmware extensibility and complex UI support.

Availability

R5F10NPJDFB#10 is available at Aetrix Electronics and suitable for electric AMI power meters, prepayment energy meters, and grid edge sensor nodes requiring stable component supply, long lifecycle support, and traceable sourcing for utility-certified designs.

Supply support for R5F10NPJDFB#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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The RL78/I1C product line was engineered specifically for secure, ultra-low-power electricity metering applications - integrating metrology-grade ADCs, hardware crypto, and RTC with independent power domains to meet IEC 62056 and ANSI C12 compliance requirements.

FAQ

What is the maximum operating frequency and minimum instruction execution time for the R5F10NPJDFB#10?

The R5F10NPJDFB#10 supports a 32 MHz PLL clock, achieving a minimum instruction execution time of 0.03125 µs. This timing is confirmed in the RL78/I1C datasheet (R01DS0281EJ0231 Rev.2.31, Page 13) and applies directly to the R5F10NPJDFB#10 as a member of the 100-pin, 256 KB flash variant group. The device also supports 24 MHz high-speed on-chip oscillator operation (0.04167 µs).

Does the R5F10NPJDFB#10 include hardware AES encryption, and which cipher modes does it support?

Yes, the R5F10NPJDFB#10 includes dedicated hardware AES circuitry supporting GCM, ECB, and CBC cipher modes with 128-, 192-, and 256-bit key lengths. This is explicitly stated in the datasheet's "Features" section (Page 1) and confirmed in Table 1-1 and Figure 1-1, where the "10N" suffix in the part number denotes AES functionality - a feature exclusive to R5F10N-series devices like the R5F10NPJDFB#10.

What are the analog input capabilities of the R5F10NPJDFB#10, particularly for metrology applications?

The R5F10NPJDFB#10 integrates two independent A/D subsystems: a four-channel 24-bit ΔΣ ADC (ANIP0–ANIP3/ANIN0–ANIN3) optimized for precision metrology, and a six-channel 10-bit SAR ADC (ANI0–ANI5) for general-purpose sensing. Both operate across the full 1.9–5.5 V VDD range, with dedicated analog references (AVREFP/AVREFM), regulator capacitance (AREGC), and common-mode control (AVCM) - all confirmed in the RL78/I1C datasheet (Pages 2, 12–13).

How does the independent power supply RTC function in the R5F10NPJDFB#10, and what is its voltage range?

The R5F10NPJDFB#10 features an independent-power-supply RTC powered by the VRTC pin, which operates from 1.6 V to 5.5 V - enabling calendar, alarm, and clock correction functions even when main VDD is absent. This is documented in the "Features" list (Page 1), block diagram (Page 12), and electrical specifications (Page 13), and is a defining characteristic of the RL78/I1C family for utility metering compliance.

What is the pin count, package type, and industrial temperature rating of the R5F10NPJDFB#10?

The R5F10NPJDFB#10 is packaged in a 100-pin plastic LFQFP (14 × 14 mm, 0.5 mm pitch) with industrial temperature rating of −40°C to +85°C (denoted by the "D" suffix in the part number per Figure 1-1). This matches the "100-pin products" column in Table 1-1 and the pin configuration diagram on Page 8 of the RL78/I1C datasheet (R01DS0281EJ0231 Rev.2.31).