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HomeProductsIntegrated Circuits (ICs)Embedded - MicrocontrollersR5F100ACASP#V0
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R5F100ACASP#V0 - Renesas Electronics America Inc

Manufacturer Part Number
R5F100ACASP#V0
Manufacturer
Renesas Electronics Corporation
Allelco Part Number
32D-R5F100ACASP#V0
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
10,100 pcs available, New & Original
Parts Description
IC MCU 16BIT 32KB FLASH 30LSSOP
Package
30-LSSOP
Data sheet
R5F100ACASP#V0.pdf

PCN Assembly/Origin

Material Change 15/Feb/2019.pdf

PCN Obsolescence/ EOL

Mult Dev 22/Oct/2019.pdf
RoHs Status
ROHS3 Compliant
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In stock: 10100

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Specifications

R5F100ACASP#V0 Tech Specifications
Renesas Electronics America Inc - R5F100ACASP#V0 technical specifications, attributes, parameters and parts with similar specifications to Renesas Electronics America Inc - R5F100ACASP#V0

Product Attribute Attribute Value
Manufacturer Renesas Electronics Corporation
Voltage - Supply (Vcc/Vdd) 1.6V ~ 5.5V
Supplier Device Package 30-LSSOP
Speed 32MHz
Series RL78/G13
RAM Size 2K x 8
Program Memory Type FLASH
Program Memory Size 32KB (32K x 8)
Peripherals DMA, LVD, POR, PWM, WDT
Package / Case 30-LSSOP (0.240", 6.10mm Width)
Package Tray
Product Attribute Attribute Value
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Number of I/O 21
Mounting Type Surface Mount
EEPROM Size 4K x 8
Data Converters A/D 8x8/10b
Core Size 16-Bit
Core Processor RL78
Connectivity CSI, I²C, LINbus, UART/USART
Base Product Number R5F100

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN 3A991A2
HTSUS 8542.31.0001

Parts Introduction

R5F100ACASP#V0 Image
R5F100ACASP#V0 (1)

Manufacturer Part Number

R5F100ACASP#V0

Manufacturer

Renesas Electronics America

Introduction

Integrated 16-Bit Microcontroller for Embedded Systems

Product Features and Performance

Core Processor RL78

16-Bit Core Size

32MHz Clock Speed

CSI, I2C, LINbus, UART/USART Connectivity Options

Features DMA, LVD, POR, PWM, WDT Peripherals

21 I/O Ports for Enhanced Interfacing

Product Advantages

High Integration for Minimal External Components

Wide Range of Operating Voltage for Versatile Power Sources

Internal Oscillator Reduces External Component Count

Packed with multiple serial communication interfaces

Key Technical Parameters

32KB Program Flash Memory

4KB EEPROM

2KB RAM

6V to 5.5V Supply Voltage Range

A/D Converter with 8 Channels, 8/10-Bit Resolution

30-LSSOP Surface Mount Package

Quality and Safety Features

Low Voltage Detection for Reliable Operation

Power-On Reset to Ensure Proper Startup

Watchdog Timer to Prevent System Freezing

Compatibility

Compatible with RL78 Family Peripherals and Development Tools

Application Areas

Consumer Electronics

Industrial Automation

Automotive

Home Appliances

Product Lifecycle

Obsolete Status

Consider Alternative Solutions for New Designs

Several Key Reasons to Choose This Product

Proven Reliability of RL78 Core

Suitable for Wide Range of Applications due to High Integration

Flexible Power Supply Range Minimizes Design Constraints

Comprehensive Development Support from Renesas

Products are generally backward compatible within the RL78 Series

Frequently Asked Questions(FAQ)

How does the R5F100ACASP#V0 perform in low-voltage battery-powered applications, and what are its key power-related specifications?
The R5F100ACASP#V0 supports a supply voltage range of 1.6V to 5.5V, making it suitable for low-voltage battery-operated devices such as remote sensors or portable instruments. At 32MHz operating frequency, it maintains full functionality down to 1.6V, which extends battery life in energy-constrained designs. The device includes built-in low-voltage detection (LVD) and power-on reset (POR) peripherals that enhance system reliability during voltage transitions. With only 2K x 8 bytes of RAM, efficient memory management is essential when operating at lower voltages to avoid stack overflow or data loss.
What oscillator configuration options are available with the R5F100ACASP#V0, and how do they affect timing accuracy and power consumption?
The R5F100ACASP#V0 features an internal oscillator capable of running at up to 32MHz, eliminating the need for external crystals in space- or cost-sensitive applications. While this simplifies PCB layout and reduces component count, the internal RC oscillator has typical accuracy of ±2% over temperature and voltage variations—less precise than crystal-based solutions. For applications requiring tighter timing tolerances, an external clock source can be used through the main clock input, but this increases power draw slightly due to additional loading on the external circuit.
Can the R5F100ACASP#V0 interface with both analog sensors and digital communication buses simultaneously?
Yes, the R5F100ACASP#V0 integrates 8-channel 8/10-bit successive approximation ADCs, enabling direct connection to analog sensors like temperature or pressure transducers without requiring external conversion hardware. Concurrently, it supports multiple digital interfaces including UART/USART, I2C, CSI, and LINbus, allowing bidirectional communication with host systems, displays, or other microcontrollers. This combination enables compact embedded systems that process real-world signals and relay data over industrial protocols—ideal for smart metering or IoT edge nodes.
How does the program memory size and type influence firmware development and debugging for the R5F100ACASP#V0?
With 32KB of flash memory organized as 32K x 8 bits, the R5F100ACASP#V0 provides sufficient space for moderately complex firmware, including multi-protocol stacks, state machines, and basic sensor fusion algorithms. Flash memory allows in-system programming and reprogramming, facilitating iterative development and field updates. However, developers must optimize code size carefully, especially when using floating-point libraries or RTOS components, as exceeding 32KB may require modularization or use of external memory. Debugging is supported via standard JTAG/SWD interfaces, though limited RAM (only 2K x 8) restricts deep call-stack analysis during runtime.
What are the thermal and environmental constraints when deploying the R5F100ACASP#V0 in industrial settings?
The R5F100ACASP#V0 operates reliably across a commercial temperature range of -40°C to +85°C, meeting industrial-grade requirements for automotive peripherals or outdoor equipment. Its surface-mount 30-LSSOP package has a known good thermal performance for moderate power dissipation (<100mW), but prolonged operation near 85°C may necessitate careful PCB layout to maintain junction temperatures below maximum ratings. Moisture sensitivity level (MSL) of 3 indicates standard handling precautions apply, with reflow soldering requiring adherence to JEDEC J-STD-020 guidelines.
How does the number of I/O pins compare between the R5F100ACASP#V0 and similar RL78/G13 family variants?
The R5F100ACASP#V0 offers 21 general-purpose I/O pins in its 30-pin LSSOP package, providing flexibility for control and sensing tasks. In comparison, higher-density variants like the R5F109ACJSP#H0 offer more integrated peripherals but fewer GPIOs due to increased pin multiplexing for advanced functions. When selecting between models, designers must weigh pin availability against peripheral richness. For simple automation tasks, the R5F100ACASP#V0’s balanced I/O count avoids over-provisioning while supporting necessary signal routing.
Is it feasible to implement watchdog and brown-out protection simultaneously using the R5F100ACASP#V0’s built-in peripherals?
Yes, the R5F100ACASP#V0 incorporates both a windowed watchdog timer (WDT) and low-voltage detection circuitry, allowing dual-layer fault monitoring. The WDT can reset the MCU if software hangs or enters an infinite loop, while the LVD triggers a controlled shutdown or reset if supply voltage drops below safe thresholds—typically around 1.8V depending on configuration. These protections operate independently and consume minimal active current, enhancing system robustness in unattended deployments such as utility meters or wireless gateways.
What considerations apply when substituting the R5F100ACASP#V0 with alternate part numbers like R5F100ACASP#10 or R5F100ACASP#30?
Alternate suffixes such as #10 or #30 typically denote different packaging options (e.g., tape-and-reel vs. tube) or lead-free compliance variants, but share identical electrical characteristics and pinouts. Substitution is generally safe provided mechanical footprint compatibility is maintained and procurement logistics align. However, always verify exact package dimensions and moisture sensitivity levels before replacing in production, as minor differences in handling requirements can impact assembly yield.
How does the EEPROM size of 4K x 8 bytes impact data logging capabilities with the R5F100ACASP#V0?
The 4K x 8 byte EEPROM provides non-volatile storage for calibration values, configuration parameters, or periodic logs—sufficient for small-scale data retention tasks. At typical write endurance of 1 million cycles per location (per Renesas specs), it supports frequent updates from sensors or user inputs without immediate wear-out concerns. However, for high-frequency logging (>10 writes/sec), wear-leveling algorithms should be implemented to distribute writes evenly across sectors and extend lifetime. Given limited size, older entries must be managed dynamically or compressed efficiently.
What communication protocol support makes the R5F100ACASP#V0 suitable for automotive diagnostics or industrial networks?
The inclusion of LINbus support directly addresses automotive diagnostic requirements, enabling interoperability with existing LIN-based networks for body electronics or sensor aggregation. Combined with UART/USART and I2C, the MCU can bridge legacy serial devices to modern microcontroller architectures. While not CAN-compatible out-of-the-box, UART-based message framing can emulate lightweight CAN-like communication over dedicated lines, offering a cost-effective alternative for non-critical automotive subsystems where bandwidth demands are modest.
How does the flash memory type influence security and update strategies in systems using the R5F100ACASP#V0?
As a flash-based device, the R5F100ACASP#V0 allows secure boot and firmware updates via in-circuit programming, provided appropriate cryptographic acceleration or software routines are implemented. Unlike EEPROM, flash blocks erase in larger chunks (often 1KB), so partial-field updates require careful sector management to preserve unmodified data. Security-conscious designs should leverage Renesas’s built-in unique ID and optional AES engine (if present in derivative) to authenticate firmware sources and prevent unauthorized code execution.
What design trade-offs arise when choosing the R5F100ACASP#V0 over ARM Cortex-M0+ alternatives for ultra-low-power applications?
While ARM Cortex-M0+ MCUs often achieve lower active current (sub-100µA/MHz), the R5F100ACASP#V0 trades absolute power efficiency for integration density and legacy compatibility. It consumes roughly 50–100µA/MHz in active mode, yet eliminates external oscillators and integrates ADCs/I2C/LIN, reducing BOM cost and board area. For applications where protocol simplicity and proven industrial pedigree outweigh peak efficiency—such as legacy industrial controllers—the RL78 core delivers predictable timing and robust peripheral control without complex toolchains.
How does the operating voltage range affect interfacing with 3.3V versus 5V logic devices?
The R5F100ACASP#V0 supports 1.6V to 5.5V operation, meaning it can natively interface with both 3.3V and 5V systems without level shifters when powered appropriately. If the MCU runs at 3.3V, it can safely communicate with 3.3V devices; if powered at 5V, it remains compatible with legacy 5V peripherals. However, care must be taken when driving outputs toward 5V rails to ensure downstream components tolerate overdriven inputs, and input thresholds should be verified under worst-case voltage conditions.
What role does DMA play in optimizing performance with the R5F100ACASP#V0, especially with ADC and UART peripherals?
The R5F100ACASP#V0 includes DMA functionality that offloads data transfers between peripherals and RAM, reducing CPU overhead during ADC sampling or UART reception. For example, continuous ADC readings can be streamed directly to buffer memory without CPU intervention, enabling higher sampling rates or concurrent processing. This is particularly valuable in sensor fusion applications where raw ADC data must be processed alongside incoming serial commands, minimizing latency and freeing cycles for decision-making logic.
Are there any known limitations in PWM resolution or frequency achievable with the R5F100ACASP#V0?
The PWM module on the R5F100ACASP#V0 typically supports variable-resolution outputs depending on clock source and prescaler settings. With a 32MHz system clock, users can generate PWM frequencies from hundreds of Hz up to several MHz, with resolution ranging from 8-bit to 12-bit effective depth based on duty-cycle granularity. For motor control or LED dimming, 10-bit resolution suffices, but precision-critical applications may require external DACs or higher-performance PWM peripherals available in RL78 variants beyond this model.
How does the package size and pinout facilitate migration to smaller form factors in next-generation designs?
The 30-LSSOP (6.10mm width) package occupies less board real estate than traditional SOIC equivalents while offering comparable pin density. Its narrow profile eases routing in dense layouts, and the consistent pin numbering across RL78 family members simplifies reuse of firmware across derivatives. Engineers considering miniaturization can transition to QFN packages in later stages without rewriting low-level drivers, leveraging the same core architecture and register map preserved in the R5F100 series.

Parts with Similar Specifications

The three parts on the right have similar specifications to Renesas Electronics America Inc R5F100ACASP#V0

Product Attribute R5F100AAGSP#V0 R5F100ACDSP#V0 R5F100ACASP#10 R5F100ACASP#30
Part Number R5F100AAGSP#V0 R5F100ACDSP#V0 R5F100ACASP#10 R5F100ACASP#30
Manufacturer Renesas Electronics America Inc Renesas Electronics America Inc Renesas Electronics America Inc Renesas Electronics America Inc
Peripherals - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Voltage - Supply (Vcc/Vdd) - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Number of I/O - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Speed - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Program Memory Type - - - -
RAM Size - - - -
EEPROM Size - - - -
Program Memory Size - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Oscillator Type - - - -
Data Converters - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Connectivity - - - -
Series - - - -
Core Size - - - -
Core Processor - - - -

R5F100ACASP#V0 Datasheet PDF

Download R5F100ACASP#V0 pdf datasheets and Renesas Electronics America Inc documentation for R5F100ACASP#V0 - Renesas Electronics America Inc.

PCN Packaging
Carrier Tape Update 29/Jul/2016.pdf Label Change-All Devices 01/Dec/2022.pdf
PCN Assembly/Origin
Material Change 15/Feb/2019.pdf
PCN Obsolescence/ EOL
Mult Dev 22/Oct/2019.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
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R5F100ACASP#V0 Image

R5F100ACASP#V0

Renesas Electronics America Inc
32D-R5F100ACASP#V0

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