Renesas R5F1076CGSP#X0

Overview

R5F1076CGSP#X0 from Renesas is an RL78/L1A-series 16-bit microcontroller with integrated LCD controller/driver (45 segment × 8 common), 12-bit A/D and D/A converters (14/2 channels), three operational amplifiers (two with analog MUX), internal voltage reference (1.5–2.5 V), and real-time clock 2 (RTC2) with calendar and alarm. It operates from 1.8 V to 3.6 V, delivers 33 DMIPS at 24 MHz, and targets ultra-low-power LCD-based consumer devices such as smart meters and portable medical displays.

For engineers reviewing the R5F1076CGSP#X0 datasheet, R5F1076CGSP#X0 pinout, R5F1076CGSP#X0 application, or R5F1076CGSP#X0 equivalent, key selection considerations include its 100-pin LFQFP package, 128 KB flash + 8 KB data flash + 5.5 KB RAM memory map, HALT-mode current of 0.68 μA (RTC2 + LVD enabled), and dual-clock domain support (24 MHz HS on-chip oscillator ±1.0% accuracy, 32.768 kHz XT1 subsystem clock).

Technical Context

The R5F1076CGSP#X0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and hardware multiply/divide/accumulate instructions. Its system clock supports high-speed on-chip oscillator (1–24 MHz), external crystal (1–20 MHz), and low-speed subsystem clock (32.768 kHz), enabling flexible power-performance trade-offs across operation modes including HALT (0.68 μA), STOP, and SNOOZE.

Peripheral integration centers on LCD control (capacitor-split, voltage-boost, or resistor-divider methods), analog signal chain (14-channel 12-bit A/D with internal 1/2 AVDD reference, 2-channel 12-bit D/A with rail-to-rail output), and event-driven execution via Event Link Controller (22 input events linked to 8 peripheral triggers) and Data Transfer Controller (30 interrupt sources, chain transfer support).

Key Specifications

Pinout & Package

Package: 100-pin plastic LFQFP (14 × 14 mm, 0.5 mm pitch), RoHS-compliant, consumer-grade temperature range (-40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F11MPGAFB#30 and RL78/G14 R5F104PJAFB#30, the R5F1076CGSP#X0 uniquely combines 45×8 LCD drive capability, dual 12-bit A/D+D/A, three op-amps (two with analog MUX), and 0.68 μA HALT-mode current-enabling single-chip implementation of battery-powered, display-intensive embedded systems without external analog or display support ICs.

Availability

R5F1076CGSP#X0 is available at Aetrix Electronics and suitable for smart energy meters, portable medical displays, home appliance control panels, and industrial HMI modules requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant manufacturing.

Supply support for R5F1076CGSP#X0 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 applications, with deep expertise in microcontrollers, analog, and power management.

The RL78/L1A product line is designed specifically for ultra-low-power, LCD-based consumer electronics-integrating display drivers, precision analog peripherals, and real-time clock functionality into a single chip to eliminate external components and reduce system-level power consumption.

FAQ

What is the maximum operating frequency and instruction throughput of the R5F1076CGSP#X0?

The R5F1076CGSP#X0 supports a maximum high-speed on-chip oscillator frequency of 24 MHz, achieving 33 DMIPS performance. Its minimum instruction execution time is 0.04167 μs at 24 MHz (HS on-chip oscillator), and it maintains full functionality down to 32.768 kHz for ultra-low-power RTC2 operation. The RL78 CPU core includes hardware multiply/divide and multiply-accumulate instructions, enabling efficient signal processing in the R5F1076CGSP#X0.

Does the R5F1076CGSP#X0 support external crystal oscillators for both main and subsystem clocks?

Yes, the R5F1076CGSP#X0 supports external crystals on X1/X2 pins for the main system clock (1–20 MHz) and on XT1/XT2 pins for the subsystem clock (32.768 kHz). The XT1 connection is mandatory for RTC2 calendar and alarm functionality. The device also includes high-accuracy on-chip oscillators (±1.0% at -20°C to +85°C) that eliminate crystal requirements in cost-sensitive applications where absolute timing precision is not critical for the R5F1076CGSP#X0.

How many LCD segments and commons does the R5F1076CGSP#X0 support, and what drive methods are available?

The R5F1076CGSP#X0 supports up to 45 segment outputs (SEG0–SEG44) and 8 common outputs (COM0–COM7), enabling 45×8 multiplexed LCD displays. It offers three configurable drive methods: internal voltage boosting (for higher contrast with single-supply operation), capacitor split (for reduced external component count), and external resistance division (for precise bias voltage tuning). All methods are software-selectable per the R5F1076CGSP#X0's LCD control registers.

What analog peripherals are integrated into the R5F1076CGSP#X0, and how are they configured?

The R5F1076CGSP#X0 integrates a 14-channel 12-bit A/D converter with internal 1/2 AVDD reference, two 12-bit D/A converters (ANO0/ANO1), three operational amplifiers (one general-purpose, two rail-to-rail with analog MUX), and one comparator. The op-amps support programmable gain and can be routed to A/D inputs via MUX settings. The internal voltage reference (VREFOUT) provides selectable 1.5 V, 1.8 V, 2.048 V, or 2.5 V outputs usable by both A/D and D/A converters in the R5F1076CGSP#X0.

What power-saving modes does the R5F1076CGSP#X0 offer, and what is the lowest achievable current draw?

The R5F1076CGSP#X0 offers HALT, STOP, and SNOOZE low-power modes. In HALT mode with RTC2 and LVD enabled, it draws just 0.68 μA-enabling decade-long battery operation in metering and portable devices. STOP mode achieves sub-μA current when RTC2 is disabled, and SNOOZE mode allows selective peripheral wake-up while CPU remains halted. All modes retain RAM contents and support fast wake-up (< 10 μs from HALT), making them ideal for intermittent-sensing applications using the R5F1076CGSP#X0.