Renesas R5F11NGFAFB#30

Overview

R5F11NGFAFB#30 from Renesas is a 48-pin LFQFP 16-bit RL78/H1D microcontroller with integrated analog front-end (24-bit ΔΣ A/D, PGA, 12-bit D/A), LCD controller/driver, and real-time clock 2. It delivers 33 DMIPS at 24 MHz, operates from 1.8 V to 5.5 V, and achieves 70.8 μA/MHz active power and 0.68 μA Halt mode current. Designed for precision sensor signal conditioning in flow meters and portable healthcare devices.

For engineers reviewing the R5F11NGFAFB#30 datasheet, R5F11NGFAFB#30 pinout, R5F11NGFAFB#30 application, or R5F11NGFAFB#30 equivalent, this page provides verified technical context, package-specific pin functions, low-power design trade-offs, AFE configuration constraints, and validated alternative options for medical and industrial metering systems.

Technical Context

The R5F11NGFAFB#30 implements the RL78 CISC CPU core with 3-stage pipeline, supporting multiply/divide and MAC instructions. Its analog front-end includes a 24-bit second-order ΔΣ A/D converter (85 dB SNDR, 488 sps–15.625 ksps output rate) and dual programmable gain instrumentation amplifiers (PGA0: x1–x64; PGA1: x12–x24).

It integrates a 12-bit interval timer, RTC2 with calendar and alarm, 8-channel TAU timer array, 3 UART/SCI channels, 4 I²C interfaces, and an LCD controller supporting up to 36 segments and 8 commons. Power management includes HALT, STOP, and SNOOZE modes with on-chip LVD (9-level selectable) and POR.

Key Specifications

Pinout & Package

48-pin plastic LFQFP (7 × 7 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 mixed-signal microcontroller applications.

Compared with R5F11NGFAFB#30, R5F11NLFAFB#30 offers more I/O and debug resources at the cost of board area, while R5F11NGGAFB#30 provides 32 KB additional flash without altering footprint or analog behavior-making it ideal for scalable product families.

Availability

R5F11NGFAFB#30 is available at Aetrix Electronics and suitable for flow metering, portable healthcare instrumentation, industrial pressure transmitters, and smart water quality sensors requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade traceability.

Supply support for R5F11NGFAFB#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 Corporation is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets.

The RL78/H1D product line targets ultra-low-power, high-precision analog-intensive applications such as medical diagnostics, utility metering, and environmental sensing-integrating AFE, LCD, and timing functions into a single die.

FAQ

What is the maximum operating frequency and corresponding power consumption of the R5F11NGFAFB#30?

The R5F11NGFAFB#30 operates up to 24 MHz using its high-speed on-chip oscillator, delivering 33 DMIPS performance. At this frequency, its typical active current is 70.8 μA per MHz, resulting in ~1.7 mA total at 24 MHz (VDD = 3.3 V, TA = 25°C). This value scales linearly with clock speed, enabling dynamic power scaling in battery-constrained designs.

Does the R5F11NGFAFB#30 support simultaneous use of its 24-bit ΔΣ A/D and 10-bit SAR A/D converters?

Yes, the R5F11NGFAFB#30 supports concurrent operation: the 24-bit ΔΣ A/D and 10-bit SAR A/D share analog input channels ANI8–ANI10 but use independent conversion controllers and result registers. Time-division multiplexing is required for shared inputs, while dedicated PGA paths allow simultaneous high- and low-resolution acquisition on different channels.

What LCD bias methods does the R5F11NGFAFB#30 support, and how are they selected?

The R5F11NGFAFB#30 supports three LCD bias methods: internal voltage boosting, capacitor-split, and external resistance division. Selection is controlled via the LCD control register (LCDCR0) bits LBC0–LBC1. The capacitor-split method is most common for low-power portable devices, while external resistor division suits high-contrast industrial displays with fixed VDD.

Can the SBIAS output of the R5F11NGFAFB#30 be used to power external sensors, and what is its voltage range?

Yes, the SBIAS terminal on the R5F11NGFAFB#30 provides a programmable reference voltage from 0.5 V to 2.2 V for biasing external sensors such as bridge-based pressure elements or electrochemical cells. It is internally generated and must be decoupled with a 0.22 µF capacitor to AVSS; output current capability is limited to 100 µA continuous.

Is the R5F11NGFAFB#30 pin-compatible with other RL78/H1D variants like R5F11NLFAFB#30 or R5F11PLFABG#U0?

No, the R5F11NGFAFB#30 is not pin-compatible with R5F11NLFAFB#30 (64-pin LFQFP) or R5F11PLFABG#U0 (64-pin TFBGA). While R5F11NGFAFB#30 and R5F11PLFABG#U0 share identical functionality per Renesas documentation, their 48-pin LFQFP and 64-pin TFBGA packages have fundamentally different pin counts, layouts, and thermal characteristics-requiring distinct PCB designs.