Renesas R5F1076CMSP#V0

Overview

R5F1076CMSP#V0 from Renesas is an RL78/L1A-series 16-bit microcontroller with integrated LCD controller/driver, 12-bit A/D and D/A converters, three operational amplifiers (two with analog MUX), internal voltage reference, and real-time clock 2. It operates from 1.8 V to 3.6 V, delivers 33 DMIPS at 24 MHz, and achieves ultra-low power consumption down to 70.8 μA/MHz and 0.68 μA in Halt mode - designed for battery-powered LCD-based consumer devices such as smart meters and portable medical displays.

For engineers reviewing the R5F1076CMSP#V0 datasheet, R5F1076CMSP#V0 pinout, R5F1076CMSP#V0 application, or R5F1076CMSP#V0 equivalent, key selection considerations include its 80-pin LFQFP package, 48 KB flash/8 KB data flash/5.5 KB RAM memory configuration, dual 12-bit analog converters with internal reference, and full peripheral integration for single-chip LCD instrumentation without external drivers or precision references.

Technical Context

The R5F1076CMSP#V0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and support for multiply/divide and multiply-accumulate instructions. Its true low-power platform uses multiple clock domains: high-speed on-chip oscillator (1–24 MHz, ±1.0% accuracy), subsystem clock (32.768 kHz crystal), and low-speed on-chip oscillator (15 kHz).

It integrates a configurable LCD controller supporting internal voltage boosting, capacitor split, or external resistance division methods, driving up to 32 segment × 4 common outputs. The analog subsystem includes a 10-channel 12-bit A/D converter with internal 1/2 AVDD reference and temperature sensor, two 12-bit D/A outputs (0.35 V to AVDD – 0.47 V), and a rail-to-rail op-amp pair with programmable analog MUX routing.

Key Specifications

Pinout & Package

Package: 80-pin plastic LFQFP (12 × 12 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 R5F1076CMSP#V0, R5F11MPGAFB#30 offers greater memory and LCD capacity but demands board rework, whereas R5F11MMFAFB#30 provides seamless flash scalability in the same footprint - making it the preferred upgrade for production continuity.

Availability

R5F1076CMSP#V0 is available at Aetrix Electronics and suitable for smart energy meters, portable medical devices, home appliance control panels, and industrial thermostats requiring stable component supply and long-term lifecycle support.

Supply support for R5F1076CMSP#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 Corporation is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications.

The RL78/L1A product line targets cost-sensitive, ultra-low-power LCD-based consumer and industrial equipment - integrating analog, timing, and display functions to minimize external components and simplify design.

FAQ

What is the maximum operating frequency and instruction throughput of the R5F1076CMSP#V0?

The R5F1076CMSP#V0 runs at up to 24 MHz using its high-speed on-chip oscillator, achieving 33 DMIPS performance. Its minimum instruction execution time is 0.04167 μs at 24 MHz, and it supports multiply/divide and multiply-accumulate operations. The RL78 CPU core uses a 3-stage pipeline and operates across a wide voltage range (1.8 V to 3.6 V), ensuring consistent throughput even under brown-out conditions. This makes the R5F1076CMSP#V0 suitable for real-time control tasks in resource-constrained LCD applications.

Does the R5F1076CMSP#V0 support hardware debugging during development?

Yes, the R5F1076CMSP#V0 includes an on-chip debug function compatible with Renesas E2 or E2 Lite emulators. However, Renesas explicitly cautions against using this feature in mass-produced end products due to potential flash memory wear-out beyond guaranteed rewrite cycles. For production units, debug functionality must be disabled or removed. The R5F1076CMSP#V0 supports standard SWD-style debugging via the TOOLRxD/TOOLTxD pins, and its debug interface is fully documented in the RL78/L1A User's Manual.

How does the LCD controller in the R5F1076CMSP#V0 handle different LCD bias configurations?

The R5F1076CMSP#V0 LCD controller supports three bias methods: internal voltage boosting, capacitor split, and external resistance division - selected via software configuration. It drives up to 32 segments and 4 commons (or 28 segments × 8 commons), with VL1–VL4 pins providing programmable LCD supply voltages. The internal booster eliminates external charge pumps, while the capacitor split method uses external CAPH/CAPL capacitors for efficient bias generation. All modes are managed by dedicated LCD control registers and require no external timing components.

Can the R5F1076CMSP#V0 operate from a single 2.0 V coin cell battery?

Yes, the R5F1076CMSP#V0 is fully specified to operate from 1.8 V to 3.6 V, making it compatible with standard CR2032 (3.0 V nominal) or lower-voltage lithium primary cells. At 2.0 V, it maintains full functionality including 12-bit A/D conversion, LCD driving, and real-time clock operation. Its ultra-low-power HALT mode draws only 0.68 μA with RTC2 and LVD active - enabling multi-year operation on a single coin cell in intermittent-read applications like utility meter displays or environmental sensors.

What are the key analog features integrated into the R5F1076CMSP#V0?

The R5F1076CMSP#V0 integrates a comprehensive analog subsystem: a 10-channel 12-bit A/D converter with internal 1/2 AVDD reference and temperature sensor; two 12-bit D/A outputs (ANO0/ANO1) spanning 0.35 V to AVDD – 0.47 V; three operational amplifiers (one general-purpose, two rail-to-rail with analog MUX); and a selectable voltage reference (1.5 V/1.8 V/2.048 V/2.5 V). These features eliminate the need for external op-amps, DACs, references, or sensor signal conditioners in compact instrumentation designs.