Renesas R5F100ACASP#10

Overview

R5F100ACASP#10 from Renesas is a 30-pin, 16 KB flash, 2 KB RAM RL78/G13 16-bit microcontroller with integrated data flash (4 KB), real-time clock, 10-bit A/D converter (6 channels), and ultra-low-power operation (66 μA/MHz active, 0.57 μA RTC+LVD mode) for battery-powered industrial sensors and smart metering interfaces.

For engineers reviewing the R5F100ACASP#10 datasheet, R5F100ACASP#10 pinout, R5F100ACASP#10 application, or R5F100ACASP#10 equivalent, key selection criteria include its LSSOP-30 package, -40°C to +85°C industrial temperature grade (A-grade), 1.6–5.5 V supply range, and support for SNOOZE mode wake-up via serial interface or timer events.

Technical Context

The R5F100ACASP#10 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling 41 DMIPS at 32 MHz while supporting variable instruction timing (0.03125 μs to 30.5 μs). It integrates a high-accuracy ±1.0% on-chip oscillator (selectable 1–32 MHz), DMA controller (2 channels), and multiplier/divider unit for embedded control math.

Its peripheral set includes UART/LIN (2 channels), I²C (3 channels), CSI (2 channels), 16-bit timers (8 channels), 12-bit interval timer, watchdog timer, and on-chip voltage detector with 14-level LVD interrupt/reset selection - all optimized for deterministic real-time response in resource-constrained edge nodes.

Key Specifications

Pinout & Package

Package: 30-pin plastic LSSOP (7.62 mm, 0.65-mm pitch), JEDEC MS-013AC compliant, surface-mount compatible with standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100BCASP#10 and R5F101ACASP#10, the R5F100ACASP#10 uniquely balances minimal footprint, integrated 4 KB data flash for parameter retention, and industrial temperature rating - making it optimal for space-constrained, battery-operated devices requiring reliable nonvolatile configuration storage.

Availability

R5F100ACASP#10 is available at Aetrix Electronics and suitable for smart metering interfaces, industrial sensor nodes, wireless sensor hubs, and home appliance control systems requiring stable component supply and long-term production continuity.

Supply support for R5F100ACASP#10 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, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G13 product line delivers ultra-low-power 16-bit MCUs targeting cost-sensitive, battery-operated industrial and consumer applications requiring high integration and long service life.

FAQ

What is the maximum operating frequency of the R5F100ACASP#10?

The R5F100ACASP#10 operates up to 32 MHz using its high-accuracy on-chip oscillator (±1.0% over -20°C to +85°C). At this frequency, it delivers 41 DMIPS performance with 66 μA/MHz active current consumption. The oscillator supports selectable frequencies from 1 MHz to 32 MHz, and the CPU can also run from a 32.768 kHz subsystem clock for ultra-low-speed operation (30.5 μs/instruction).

Does the R5F100ACASP#10 support in-system programming (ISP)?

Yes, the R5F100ACASP#10 supports full in-system programming via its on-chip debug interface. It includes self-programming capability for both code flash and data flash memory, with features such as boot swap function and flash shield window for secure firmware updates. No external programmer is required - programming can be performed through UART, CSI, or I²C using Renesas-provided flash development toolkits.

How many analog input channels does the R5F100ACASP#10 have, and what is their resolution?

The R5F100ACASP#10 includes six analog input channels (ANI0–ANI5) with 10-bit resolution. It supports single-ended and differential measurements, uses an internal 1.45 V reference voltage, and integrates a calibrated temperature sensor. The A/D converter operates across the full 1.6–5.5 V supply range, enabling direct sensing from resistive sensors, thermistors, or voltage dividers without external signal conditioning.

Is the R5F100ACASP#10 pin-compatible with other RL78/G13 variants in LSSOP-30 package?

Yes, all RL78/G13 devices in the 30-pin LSSOP package - including R5F100AAASP#10, R5F100ACASP#10, R5F100ADASP#10, and R5F100AEASP#10 - share identical pinouts and electrical characteristics. This allows hardware reuse across memory variants (16–64 KB flash) and simplifies design scalability without PCB changes.

What power-saving modes are available on the R5F100ACASP#10, and what are their typical current draws?

The R5F100ACASP#10 offers HALT (0.23 μA), STOP (0.57 μA with RTC + LVD active), and SNOOZE modes. In STOP mode, only the real-time clock and low-voltage detector remain powered - sufficient for timekeeping and brown-out monitoring in battery-critical applications. SNOOZE mode keeps selected peripherals (e.g., UART, I²C) active while the CPU sleeps, enabling responsive communication with minimal power penalty.