Renesas R5F2LA88ADFA#V0

Overview

R5F2LA88ADFA#V0 from Renesas is an 80-pin LQFP (0.65 mm pitch) 16-bit R8C CPU core MCU with 64 KB program flash, 2 KB × 2 data flash, and 3.5 KB RAM. It delivers 50 ns minimum instruction execution at 20 MHz (2.7–5.5 V), integrates a 16×16→32-bit multiplier, 12-channel 10-bit ADC, 40-segment LCD driver, and Timer RJ0–RJ2 for precision timing in appliance control panels.

For engineers reviewing the R5F2LA88ADFA#V0 datasheet, R5F2LA88ADFA#V0 pinout, R5F2LA88ADFA#V0 application, or R5F2LA88ADFA#V0 equivalent, key selection criteria include its −40 to +85°C D-version operating range, 72 programmable I/O ports with 10 high-current drive pins, UART0/UART2 + I²C/SSU serial interfaces, and on-chip debug support for rapid firmware iteration in cost-sensitive consumer electronics.

Technical Context

The R5F2LA88ADFA#V0 implements the R8C CPU core with 89 fundamental instructions and supports single-chip mode across a 1 Mbyte address space. Its system clock generation includes four independent circuits: XIN oscillator (up to 20 MHz), dedicated XCIN/XCOUT 32 kHz crystal input, high-speed on-chip oscillator with frequency adjustment, and low-speed on-chip oscillator - enabling flexible power/performance trade-offs.

Peripheral integration centers on deterministic real-time control: Timer RH provides full RTC functionality (seconds to years), Timer RC offers 16-bit PWM with 3 output pins, and Timer RJ0–RJ2 deliver 16-bit event counting, pulse width/period measurement, and programmable waveform generation. The device also embeds voltage detection (power-on reset + selectable level detection) and a watchdog timer with prescaler and low-speed oscillator option.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (PLQP0080JA-A), 0.65 mm pin pitch, body size 12 × 12 mm, exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F2LA88ANFA#V0, the R5F2LA88ADFA#V0 adds −40°C operation for wider environmental deployment, while R5F2LA68ADFA#V0 trades 16 I/O pins and 8 LCD segments for smaller footprint - making the R5F2LA88ADFA#V0 optimal for full-feature appliance HMIs requiring robustness and display richness.

Availability

R5F2LA88ADFA#V0 is available at Aetrix Electronics and suitable for refrigerator control panels, smart microwave ovens, washing machine HMIs, and induction cooktop display modules requiring stable component supply and long-term industrial lifecycle support.

Supply support for R5F2LA88ADFA#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 is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT markets.

The R8C/LA8A Group targets cost-optimized, low-power consumer and white-goods applications, emphasizing integrated LCD driving, rich analog sensing, and robust real-time control in compact packages.

FAQ

What is the maximum operating frequency and supply voltage range for the R5F2LA88ADFA#V0?

The R5F2LA88ADFA#V0 operates up to 20 MHz at a supply voltage of 2.7–5.5 V, achieving a minimum instruction execution time of 50 ns. At lower frequencies (e.g., 8 MHz), it supports down to 1.8 V, enabling ultra-low-power operation in battery-backed systems. This dual-voltage capability ensures compatibility with both standard 3.3 V and legacy 5 V designs while maintaining performance headroom.

Does the R5F2LA88ADFA#V0 support real-time clock functionality with alarm wakeup?

Yes, the R5F2LA88ADFA#V0 integrates Timer RH in real-time clock mode, supporting full calendar counting (seconds, minutes, hours, day, date, month, year) and output compare events. It can generate interrupts or wake the device from stop mode using the 32 kHz XCIN clock source, enabling precise scheduling and low-power periodic tasks without external RTC chips.

How many analog-to-digital converter channels does the R5F2LA88ADFA#V0 provide, and what resolution do they offer?

The R5F2LA88ADFA#V0 features a 10-bit successive-approximation ADC with 12 input channels, including sample-and-hold circuitry and sweep mode for automatic channel sequencing. It also integrates an on-die temperature sensor calibrated for −40 to +85°C operation, allowing direct thermal monitoring without external components - critical for appliance safety compliance.

Can the R5F2LA88ADFA#V0 drive a 40-segment LCD display without external bias circuitry?

Yes, the R5F2LA88ADFA#V0 includes a dedicated LCD drive control circuit supporting up to 40 segment and 4 common outputs with programmable bias (1/2, 1/3) and duty (static, 1/2, 1/3, 1/4). Its VL1–VL3 pins provide internal voltage taps, eliminating the need for external resistor ladders or charge pumps - reducing BOM cost and PCB area in display-intensive applications.

What debug and programming interfaces are supported by the R5F2LA88ADFA#V0?

The R5F2LA88ADFA#V0 supports on-chip debugging via a dedicated interface compatible with Renesas E1/E20 emulators, enabling full breakpoint, step-through, and memory inspection capabilities. It also supports in-system programming (ISP) and on-board flash rewrite, allowing firmware updates in the field without removing the MCU from the target board - essential for post-deployment maintenance and feature upgrades.