Renesas R5F2LAP8SNSP#U0

Overview

R5F2LAP8SNSP#U0 from Renesas Electronics is a 16-bit CMOS microcontroller in the R8C/LAPS Group, featuring 128 KB flash memory, 8 KB RAM, and integrated peripherals including UART, I²C, 16-bit timers, and ADC. It operates at up to 20 MHz, supports 2.7–5.5 V supply, and targets industrial control and sensor interface applications requiring deterministic real-time response.

For engineers reviewing the R5F2LAP8SNSP#U0 datasheet, R5F2LAP8SNSP#U0 pinout, R5F2LAP8SNSP#U0 application, or R5F2LAP8SNSP#U0 equivalent, key selection criteria include flash endurance (100k write/erase cycles), on-chip voltage monitor reset thresholds (Vdet0 = 2.9 V typ.), and support for low-power stop modes with wake-up via external interrupt or timer.

Technical Context

The R5F2LAP8SNSP#U0 implements the R8C CPU core with 32-bit ALU, 4 register banks, and 16-bit data bus. It integrates a programmable clock generation circuit supporting XIN crystal (1–20 MHz), on-chip oscillator (1 MHz), and PLL-based frequency multiplication for CPU/peripheral clock derivation.

Its peripheral set includes three 16-bit multifunction timers (TMRJ, TMRC, TMRD) with capture/compare/PWM output, a 10-bit 12-channel ADC with internal reference, and dual serial interfaces (UART + I²C) sharing dedicated pins with GPIO. Reset sources include power-on reset, watchdog timer, voltage monitor (Vdet0/Vdet1/Vdet2), and software-initiated reset.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch), RoHS-compliant, standard JEDEC MS-026AC footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F2LAP8SNSP#U0, the R5F2LAM8SNSP#U0 offers identical peripheral functionality at lower memory density, while the R5F2LA68SNSP#U0 omits advanced timing features and reduces analog channel count - both require firmware adaptation but share PCB layout and driver compatibility.

Availability

R5F2LAP8SNSP#U0 is available at Aetrix Electronics and suitable for industrial sensor nodes, motor control interfaces, and smart energy meter applications requiring stable component supply across extended product lifecycles.

Supply support for R5F2LAP8SNSP#U0 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.

The R8C/LAPS Group targets cost-effective, low-power 16-bit MCU applications in factory automation, building controls, and legacy system upgrades - emphasizing robustness, long-term supply, and toolchain continuity.

FAQ

What is the maximum operating frequency of the R5F2LAP8SNSP#U0?

The R5F2LAP8SNSP#U0 supports a maximum CPU clock frequency of 20 MHz. This is achieved either directly from an external crystal (XIN) up to 20 MHz or via internal PLL multiplication of lower-frequency sources such as the 1 MHz on-chip oscillator. The actual operating frequency depends on system clock configuration registers (CM0/CM1) and must remain within absolute maximum ratings specified in the electrical characteristics section of the R5F2LAP8SNSP#U0 hardware manual.

Does the R5F2LAP8SNSP#U0 support in-system programming?

Yes, the R5F2LAP8SNSP#U0 supports in-system programming via its on-chip debug interface (OCDS) using single-wire SWD. This allows firmware updates and flash reprogramming without removing the device from the target board. The R5F2LAP8SNSP#U0 includes flash security lock bits to prevent unauthorized access during programming, and the OCDS interface remains functional even after flash protection is enabled - provided correct unlock sequences are followed per the R8C/LAPS hardware manual.

What are the voltage monitor reset thresholds for the R5F2LAP8SNSP#U0?

The R5F2LAP8SNSP#U0 integrates three independent voltage monitor circuits: Vdet0 triggers reset at 2.9 V (typ.), Vdet1 at 4.2 V (typ.), and Vdet2 at 4.6 V (typ.). Thresholds are factory-trimmed and specified over temperature and supply variation. Each monitor can be configured to generate either a reset pulse or an interrupt request via VW0C/VW1C/VW2C registers. These thresholds are fixed and not user-adjustable - they serve as hardware-level safeguards against undervoltage conditions affecting system stability.

Can the R5F2LAP8SNSP#U0 operate from a 3.3 V supply?

Yes, the R5F2LAP8SNSP#U0 operates reliably across a supply range of 2.7 V to 5.5 V, fully covering standard 3.3 V nominal systems. At 3.3 V, all peripherals-including the 10-bit ADC, UART, and I²C-function within specification. The internal voltage reference for ADC remains stable, and the voltage monitor thresholds scale proportionally, ensuring consistent brown-out detection. System clock frequency must be derated per the DC characteristics table: maximum 20 MHz is guaranteed only above 4.5 V, while 3.3 V supports up to 12 MHz operation.

How many I/O pins does the R5F2LAP8SNSP#U0 have in the 64-pin LQFP package?

The R5F2LAP8SNSP#U0 in the 64-pin LQFP package provides 54 general-purpose I/O pins. These are distributed across ports P1 through P9, with specific allocations defined in the pin assignment table of the R5F2LAP8SNSP#U0 hardware manual. Not all pins are individually configurable as GPIO - some are dedicated (e.g., RESET, XIN/XOUT), while others share functions with peripherals (UART, I²C, ADC). Actual usable GPIO count depends on peripheral usage and pin multiplexing configuration via registers like PINSR and TRJSR.