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Renesas R5F101ACASP#V0
- Part No.:
- R5F101ACASP#V0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 30-LSSOP (0.240", 6.10mm Width)
- Datasheet:
-
R5F101ACASP#V0.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 30LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,648
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Product details
Overview
R5F101ACASP#V0 from Renesas is a 16-bit RL78/G13 microcontroller with 16 KB flash memory, 2 KB RAM, and no data flash, designed for ultra-low-power embedded control in consumer-grade applications (–40°C to +85°C). It features a 32 MHz RL78 CPU core delivering 41 DMIPS, 66 μA/MHz active current, and integrated peripherals including 10-bit ADC (6 channels), UART, I²C, SPI, RTC, and 16-bit timers - deployed in smart home sensors and battery-powered IoT edge nodes.
For engineers reviewing the R5F101ACASP#V0 datasheet, R5F101ACASP#V0 pinout, R5F101ACASP#V0 application, or R5F101ACASP#V0 equivalent, key selection criteria include its LSSOP-30 package, absence of data flash, 30-pin I/O count, low-voltage operation (1.6–5.5 V), and support for HALT/STOP/SNOOZE power modes - critical for energy-constrained designs requiring long battery life and rapid wake-up response.
Technical Context
The R5F101ACASP#V0 implements the RL78 CISC CPU core with 3-stage pipeline and configurable instruction timing (0.03125 μs @ 32 MHz to 30.5 μs @ 32.768 kHz), enabling dynamic performance scaling across sensor polling, real-time control, and sleep-state monitoring. Its memory subsystem includes 16 KB on-chip code flash (1 KB block size) with self-programming and boot-swap capability, plus 2 KB SRAM - optimized for deterministic interrupt latency and compact firmware deployment.
Peripheral integration centers on mixed-signal control: a 10-bit A/D converter with internal 1.45 V reference and temperature sensor, dual serial interfaces (UART + I²C), real-time clock with calendar/alarm, and 8-channel 16-bit timer array supporting PWM, input capture, and interval timing - all operating under single-supply 1.6–5.5 V with on-chip POR and 14-level LVD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables deterministic 41 DMIPS @ 32 MHz and sub-μs interrupt latency for real-time control loops. |
| Flash Memory | 16 KB code flash (1 KB erase blocks); supports in-application programming and boot-swap for robust firmware updates without external tools. |
| RAM | 2 KB on-chip SRAM; sufficient for RTOS stacks, sensor buffers, and communication protocol state machines in compact edge devices. |
| Power Consumption | 66 μA/MHz active current; reduces average system power in duty-cycled applications such as wireless sensor nodes with periodic wake-up intervals. |
| ADC | 10-bit resolution, 6 input channels, internal 1.45 V reference; enables direct analog sensing of voltage, temperature, and resistive transducers without external references. |
| Operating Voltage | 1.6 V to 5.5 V single supply; allows direct interface with coin cells (e.g., CR2032), Li-ion batteries, and legacy 3.3 V/5 V logic domains. |
| Temperature Range | –40°C to +85°C (Consumer grade); validated for indoor consumer electronics, white goods controls, and portable instrumentation. |
Pinout & Package
Package: 30-pin plastic LSSOP (7.62 mm, 0.65-mm pitch), surface-mount, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10 | SCK00 / SCL00 | Shared SPI clock or I²C clock line; enables dual-protocol use on same pin to reduce PCB routing complexity in resource-constrained layouts. |
| P11 | SI00 / RxD0 / TOOLRxD / SDA00 | Multi-function pin supporting SPI data-in, UART receive, debug RX, and I²C data - simplifies bring-up and field diagnostics via shared debug/comm path. |
| P20 | ANI0 / AVREFP | Analog input channel 0 with positive reference input; allows ratiometric ADC measurements when paired with external sensor bridges. |
| P21 | ANI1 / AVREFM | Analog input channel 1 with negative reference input; supports differential analog sensing and precision voltage measurement with internal reference. |
| VDD | Power Supply | Main 1.6–5.5 V supply pin; decoupling required within 1 cm for stable ADC operation and low-noise core execution. |
| VSS | Ground | Digital ground reference; must be connected to clean system ground plane to minimize switching noise coupling into analog sections. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.57 μA in STOP mode with RTC + LVD active - extends shelf life and operational runtime in always-on battery-powered systems. |
| On-chip high-accuracy oscillator | ±1.0% tolerance over –20°C to +85°C at 32 MHz - eliminates need for external crystal in cost-sensitive timing applications like remote controls. |
| Real-time clock with calendar | 99-year calendar, alarm, and clock correction - enables time-stamped logging and scheduled wake-up without external RTC IC. |
| Hardware multiplier/divider | 16×16→32-bit multiply, 32÷32→32-bit divide, and MAC operations - accelerates motor control algorithms and digital filtering without software overhead. |
| Multi-protocol serial interface | Configurable CSI (SPI-compatible), UART (LIN-capable), and I²C on shared pins - reduces pin count while supporting diverse sensor and actuator communication standards. |
Applications
| Smart Thermostat Sensor Node | Wireless Remote Control |
|---|---|
|
Use Scenario: Battery-powered wall-mounted thermostat collecting ambient temperature/humidity and transmitting data via sub-GHz RF link every 30 seconds. IC Role / Device Role / Timing Role: Primary MCU executing sensor acquisition, local PID computation, low-power scheduling, and RF interface control - with RTC managing precise wake-up intervals. Use Value: 0.57 μA STOP mode current and 66 μA/MHz active efficiency enable >2-year CR2032 battery life; integrated 10-bit ADC and internal reference eliminate external signal-conditioning components. |
Use Scenario: IR/RF universal remote controlling TVs, soundbars, and streaming devices using pre-programmed command sets and user-configurable macros. IC Role / Device Role / Timing Role: Central controller managing button matrix scan, IR carrier generation (38 kHz), RF packet assembly, and non-volatile storage of learned codes - leveraging on-chip flash for firmware and configuration. Use Value: 32 MHz CPU delivers fast macro execution and responsive UI; multi-protocol serial interfaces simplify connection to IR LED drivers and RF transceivers; LSSOP-30 package fits slim remote form factors. |
| Home Appliance Control Panel | Portable Medical Monitor |
|
Use Scenario: Touch-enabled control panel for washing machines, displaying cycle status and accepting user inputs while monitoring door lock, water level, and motor current. IC Role / Device Role / Timing Role: System manager handling capacitive touch sensing, display refresh, relay/valve actuation timing, and fault detection - using 16-bit timers for precise PWM motor control and ADC for current sensing. Use Value: 16 KB flash accommodates GUI logic and safety firmware; 6-channel ADC measures analog sensor outputs directly; 1.6–5.5 V operation interfaces seamlessly with 3.3 V MCU logic and 5 V appliance power rails. |
Use Scenario: Handheld pulse oximeter acquiring photoplethysmography (PPG) signals, computing SpO₂ and heart rate, and storing session data for Bluetooth upload. IC Role / Device Role / Timing Role: Signal processor running real-time PPG filtering, ADC oversampling, and saturation arithmetic - using hardware multiplier for fast FFT-like computations and RTC for timestamped measurements. Use Value: Integrated temperature sensor calibrates ADC reference drift; 2 KB RAM holds dual-buffered sample streams; ultra-low STOP mode preserves battery during idle periods between patient measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100ACASP#V0 | Includes 4 KB data flash; identical 16 KB code flash, 2 KB RAM, LSSOP-30 package, and peripheral set. | Required where firmware needs non-volatile parameter storage (e.g., calibration data, user preferences) without external EEPROM. | Select R5F100ACASP#V0 if data logging or field-updatable configuration is needed; otherwise R5F101ACASP#V0 reduces BOM cost by eliminating unused data flash. |
| RL78/G14 R5F111ACASP#V0 | Same RL78 core, but adds DMA controller, enhanced ADC (12-bit, 12 ch), and larger memory options; pinout not compatible. | Suitable for next-generation designs requiring higher analog precision, faster data movement, or future scalability - but requires PCB redesign. | Choose R5F111ACASP#V0 only when DMA or 12-bit ADC is mandatory; R5F101ACASP#V0 remains optimal for cost-sensitive, pin-compatible upgrades from legacy RL78/G13 designs. |
Compared with R5F100ACASP#V0, the R5F101ACASP#V0 removes data flash to lower unit cost and power leakage, making it ideal for fixed-function applications; compared with R5F111ACASP#V0, it retains full software compatibility within the RL78/G13 family while avoiding unnecessary feature bloat and layout changes.
Availability
R5F101ACASP#V0 is available at Aetrix Electronics and suitable for smart home sensors, wireless remotes, and home appliance control panels requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for R5F101ACASP#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 is a global semiconductor leader specializing in microcontrollers, analog, and power management solutions for automotive, industrial, and IoT markets.
The RL78/G13 product line delivers true low-power 16-bit MCUs targeting cost-sensitive, battery-operated, and general-purpose embedded control applications - balancing performance, energy efficiency, and integration density.
FAQ
What is the maximum operating frequency of the R5F101ACASP#V0?
The R5F101ACASP#V0 supports a maximum CPU clock frequency of 32 MHz using the high-speed on-chip oscillator. At this speed, it achieves 41 DMIPS performance with a minimum instruction execution time of 0.03125 μs. The oscillator accuracy is ±1.0% across –20°C to +85°C and 1.8–5.5 V supply, eliminating need for external crystals in many timing-critical applications. This specification is confirmed in the R01DS0131EJ0380 datasheet Section 1.1.
Does the R5F101ACASP#V0 include data flash memory?
No, the R5F101ACASP#V0 does not include data flash memory. Per the RL78/G13 datasheet Table on Page 2 and Figure 1-1, the "101" prefix explicitly denotes devices without data flash. This variant provides 16 KB code flash and 2 KB RAM only. For designs requiring non-volatile parameter storage, the pin-compatible R5F100ACASP#V0 (with 4 KB data flash) is the direct alternative - both share identical package, pinout, and peripheral configuration.
What package type and pin count does the R5F101ACASP#V0 use?
The R5F101ACASP#V0 uses a 30-pin plastic LSSOP package (7.62 mm body width, 0.65-mm lead pitch), as indicated by the "ASP" suffix and confirmed in Table 1-1 (Page 5) of the R01DS0131EJ0380 datasheet. This surface-mount package supports automated assembly and offers thermal and electrical characteristics suitable for consumer-grade applications operating from –40°C to +85°C.
Can the R5F101ACASP#V0 operate from a 1.8 V supply?
Yes, the R5F101ACASP#V0 operates across a 1.6 V to 5.5 V supply range, fully supporting 1.8 V operation. This enables direct interfacing with low-voltage sensors, energy-harvesting circuits, and single-cell lithium batteries. All specified peripherals - including the 10-bit ADC, UART, and RTC - remain functional at 1.8 V, with timing parameters adjusted per the Electrical Characteristics table in the datasheet.
What debug interface is supported by the R5F101ACASP#V0?
The R5F101ACASP#V0 supports on-chip debugging via the single-wire debug (SWD)-compatible interface using the TOOLRxD pin (P11), as documented in Section 1.1 Features and the Pin Configuration diagram. This allows full breakpoint, step-through, and memory inspection capabilities using Renesas E2 studio and compatible debug probes - without requiring additional debug headers or dedicated JTAG pins.
R5F101ACASP#V0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 30-LSSOP (0.240", 6.10mm Width)
- Series:
- RL78/G13
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 32MHz
- Connectivity:
- CSI, I2C, LINbus, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 21
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 8x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F101ACASP#V0 FAQ
1.How can I place an order for R5F101ACASP#V0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101ACASP#V0 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for R5F101ACASP#V0 reliable?
The price and inventory of R5F101ACASP#V0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101ACASP#V0 is usually 5 days.
3.What payment methods are accepted for R5F101ACASP#V0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101ACASP#V0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101ACASP#V0?
R5F101ACASP#V0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101ACASP#V0 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for R5F101ACASP#V0?
For technical support, including R5F101ACASP#V0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101ACASP#V0 requirements.
6.How does Aetrix verify that R5F101ACASP#V0 is sourced from the original manufacturer or authorized distributors?
All R5F101ACASP#V0 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that R5F101ACASP#V0 meets industry standards.
7.What is the process for return or replacement of R5F101ACASP#V0?
All R5F101ACASP#V0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101ACASP#V0, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The R5F101ACASP#V0 part is unused and in its original packaging.
Return procedure for R5F101ACASP#V0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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