Renesas R5F100AAASP#70

Overview

R5F100AAASP#70 from Renesas is a 30-pin LSSOP-packaged 16-bit RL78/G13 microcontroller with 16 KB flash, 2 KB RAM, and 4 KB data flash, operating from 1.6 V to 5.5 V. It delivers 41 DMIPS at 32 MHz, features ultra-low-power HALT/STOP/SNOOZE modes (0.57 μA RTC+LVD), and integrates 10-bit ADC (26 channels), RTC, UART, I²C, and SPI for embedded control in battery-powered industrial sensors and home appliances.

For engineers reviewing the R5F100AAASP#70 datasheet, R5F100AAASP#70 pinout, R5F100AAASP#70 application, or R5F100AAASP#70 equivalent, key selection criteria include its 30-pin LSSOP-30 package, 16 KB code flash with self-programming, 10-bit ADC resolution with internal temperature sensor, and support for LIN-bus via UART - all critical for cost-sensitive, low-power MCU replacements in legacy 8-bit upgrade paths.

Technical Context

The R5F100AAASP#70 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock). Its memory subsystem includes 16 KB on-chip flash (1 KB block size), 4 KB data flash with background operation (BGO), and 2 KB RAM - all supporting secure erase prohibition and boot-swap functionality.

Peripheral integration centers on mixed-signal timing and communication: a 10-bit A/D converter with up to 26 analog inputs and internal 1.45 V reference, real-time clock with calendar/alarm/correction, and three serial interfaces - CSI (SPI-compatible), UART/LIN, and I²C - each configurable across multiple channels with independent clock domains.

Key Specifications

Pinout & Package

30-pin plastic LSSOP (7.62 mm × 9.9 mm, 0.65 mm pitch), RoHS-compliant, moisture sensitivity level 3. Pinout validated per Renesas R01DS0131EJ0380 Rev.3.80, pages 13–15 (20-/30-pin top view diagrams).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100AAASP#70, R5F101AAASP#70 removes data flash but retains identical power/performance specs for pure-control tasks, while R5F104BAASP#70 adds memory headroom and processing bandwidth - making it suitable for next-generation feature sets without PCB redesign.

Availability

R5F100AAASP#70 is available at Aetrix Electronics and suitable for smart home sensors, industrial HMI panels, and white goods control systems requiring stable component supply and long-term manufacturability.

Supply support for R5F100AAASP#70 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 RL78/G13 product line targets cost-sensitive, ultra-low-power general-purpose embedded applications - delivering optimized balance of performance, peripheral richness, and energy efficiency for battery-operated and AC-powered equipment.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for the R5F100AAASP#70?

The R5F100AAASP#70 operates at up to 32 MHz using its high-speed on-chip oscillator, achieving 41 DMIPS performance. This rating is measured under standard conditions (VDD = 3.3 V, TA = 25°C) and reflects the RL78 CPU core's 3-stage pipeline efficiency. The R5F100AAASP#70 supports dynamic clock switching between 1 MHz and 32 MHz to optimize power versus performance trade-offs in real-time applications.

Does the R5F100AAASP#70 support LIN bus communication, and if so, how is it implemented?

Yes, the R5F100AAASP#70 supports LIN bus communication through its UART peripheral, which includes hardware-level LIN 2.2 protocol features such as automatic sync-break detection, checksum generation (classic/enhanced), and identifier filtering. No external LIN transceiver is required for basic node functionality, though physical layer compliance depends on external driver circuitry. The R5F100AAASP#70's UART channel can be configured for LIN mode independently of other serial interfaces.

What are the memory protection mechanisms available on the R5F100AAASP#70?

The R5F100AAASP#70 provides flash memory protection via block-wise erase prohibition and flash shield window functionality, preventing unauthorized read/write access to designated code regions. It also supports secure self-programming with boot-swap capability to enable safe firmware updates. These protections are enforced by on-chip logic and do not rely on external security chips - ensuring robust IP safeguarding for the R5F100AAASP#70 in production deployments.

Can the R5F100AAASP#70 operate from a single-cell lithium battery, and what voltage range does it support?

Yes, the R5F100AAASP#70 supports operation from a single-cell lithium battery (nominal 3.6 V, discharged to ~2.5 V) and wider - its specified VDD range is 1.6 V to 5.5 V. This allows direct connection to Li-ion, LiFePO₄, or alkaline sources without regulators in many cases. The on-chip LVD offers 14 programmable threshold levels down to 1.6 V, enabling graceful shutdown or low-power state entry before brownout occurs on the R5F100AAASP#70.

Is there an official pin-compatible replacement for the R5F100AAASP#70 with more memory or enhanced peripherals?

No pin-compatible replacement exists within the RL78/G13 family that increases memory or adds peripherals while retaining the 30-pin LSSOP package. The R5F100AAASP#70's pinout is fixed per its package variant; higher-memory variants (e.g., R5F100AGASP) use different pin counts (40+ pins). For migration paths, Renesas recommends the RL78/G14 family (e.g., R5F104BAASP#70), which shares software compatibility and toolchain but requires PCB layout changes due to differing package and pin assignments.