Renesas R5F2LA52ANFP#V0

Overview

R5F2LA52ANFP#V0 from Renesas is an 8 KB flash, 2 KB RAM R8C/LA5A Group 16-bit MCU with R8C CPU core, 44 programmable I/O ports, 7-channel 10-bit A/D converter, integrated LCD drive (up to 27 segment outputs), and dual UART/SSU/I²C serial interface - deployed in appliance control panels requiring low-power operation and on-chip data flash for parameter storage.

For engineers reviewing the R5F2LA52ANFP#V0 datasheet, R5F2LA52ANFP#V0 pinout, R5F2LA52ANFP#V0 application, or R5F2LA52ANFP#V0 equivalent, key selection criteria include its 52-pin LQFP package, −20 to +85°C N-version temperature grade, 20 MHz max operating frequency at 2.7–5.5 V, and integrated real-time clock (Timer RH) with calendar function for time-stamped event logging.

Technical Context

The R5F2LA52ANFP#V0 implements the R8C CPU core with 89 fundamental instructions, 16×16→32-bit hardware multiplier, and 1 Mbyte address space - enabling deterministic real-time execution in resource-constrained embedded systems. Its peripheral set includes Timer RB (8-bit ×2), Timer RC (16-bit ×1 with 4 capture/compare registers), and Timer RJ (16-bit ×2) supporting PWM, input capture, and pulse width measurement.

System-level timing is managed via four clock sources: XIN oscillator (up to 20 MHz), dedicated 32 kHz XCIN/XCOUT crystal circuit, high-speed on-chip oscillator (adjustable), and low-speed on-chip oscillator - with selectable division ratios (1/2/4/8/16) and oscillation stop detection. Power management includes wait, stop, and power-off modes with sub-µA current draw.

Key Specifications

Pinout & Package

Package: 52-pin LQFP (PLQP0052JA-A, 0.65 mm pitch), RoHS-compliant, surface-mount.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit MCU applications.

Compared with R5F2LA54ANFP, the R5F2LA52ANFP#V0 offers lower memory cost and sufficient capacity for basic UI control; versus R5F2LA32ANFP, it delivers 69% more I/O, double the A/D channels, and expanded LCD capability - justifying the 52-pin package in mid-tier consumer electronics.

Availability

R5F2LA52ANFP#V0 is available at Aetrix Electronics and suitable for appliance control panels, smart thermostat interfaces, office equipment keypads, and audio system front panels requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for R5F2LA52ANFP#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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and consumer markets.

The R8C/LA5A Group is designed for cost-effective, low-power embedded control in home and office appliances - emphasizing integrated LCD drive, robust EMI performance, and on-chip data retention for UI-centric applications.

FAQ

What is the maximum operating frequency and supply voltage range for the R5F2LA52ANFP#V0?

The R5F2LA52ANFP#V0 operates at up to 20 MHz when supplied at 2.7–5.5 V, and supports 8 MHz operation down to 1.8 V. This dual-voltage capability enables flexible power architecture - high-speed processing during active UI updates and ultra-low-power sleep modes during idle periods, all within a single R5F2LA52ANFP#V0 device.

Does the R5F2LA52ANFP#V0 support I²C communication, and how is it implemented?

Yes, the R5F2LA52ANFP#V0 supports I²C communication through its UART2 peripheral configured in I²C-bus mode, sharing pins P8_2 (SCL) and P8_3 (SDA) with SSU functionality. The hardware supports standard-mode (100 kbps) and fast-mode (400 kbps) I²C protocols with automatic START/STOP generation and ACK/NACK handling - eliminating bit-banging overhead in R5F2LA52ANFP#V0 firmware.

How many A/D converter channels does the R5F2LA52ANFP#V0 have, and what is their resolution?

The R5F2LA52ANFP#V0 integrates a 10-bit successive-approximation A/D converter with 7 input channels, including dedicated pins for temperature sensing (on-chip sensor) and analog reference inputs. Each channel supports sample-and-hold and sweep mode for sequential conversions - delivering consistent 10-bit accuracy across the full −20 to +85°C operating range of the R5F2LA52ANFP#V0.

Can the R5F2LA52ANFP#V0 drive a 4-digit LCD display directly, and what LCD configuration does it support?

Yes, the R5F2LA52ANFP#V0 can drive a 4-digit LCD directly using its integrated LCD drive control circuit, which supports up to 4 common outputs and 27 segment outputs. It implements static, 1/2, 1/3, and 1/4 duty bias with 1/2 or 1/3 bias voltage - enabling direct connection to common 7-segment + decimal point displays used in appliance panels without external driver ICs.

What debug and programming interfaces are available on the R5F2LA52ANFP#V0?

The R5F2LA52ANFP#V0 features an on-chip debug interface accessible via a single-wire connection (using P8_1 or dedicated debug pin), supporting flash programming, real-time variable monitoring, and breakpoint execution control. It also includes ROM code protection and ID code verification to prevent unauthorized firmware access - critical for secure R5F2LA52ANFP#V0 deployment in branded consumer devices.