Renesas R5F1016CASM#10
- Part No.:
- R5F1016CASM#10
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F1016CASM#10.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 20TSSOP
- Quantity:
- Payment:

- Shipping:

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Product details
Overview
R5F1016CASM#10 from Renesas is a 20-pin, 16 KB flash, 2 KB RAM RL78/G13 16-bit microcontroller with integrated 10-bit ADC (6 channels), RTC, and ultra-low-power operation (0.57 μA in STOP mode with RTC + LVD). It operates from 1.6–5.5 V and delivers 41 DMIPS at 32 MHz, targeting battery-powered industrial sensors and portable control units.
For engineers reviewing the R5F1016CASM#10 datasheet, R5F1016CASM#10 pinout, R5F1016CASM#10 application, or R5F1016CASM#10 equivalent, key selection criteria include its TSSOP-20 package, absence of data flash, -40°C to +85°C industrial temperature grade (D-grade), and support for SNOOZE mode DMA transfers during low-power background operations.
Technical Context
The R5F1016CASM#10 implements the RL78 CPU core with a 3-stage pipeline, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock). It integrates a 12-bit interval timer, one real-time clock with calendar/alarm, and watchdog timer powered by a dedicated low-speed on-chip oscillator.
Its peripheral set includes two UART/LIN channels, three I²C/Simplified I²C channels, two CSI (SPI-compatible) interfaces, eight 16-bit timers, and an 8/10-bit A/D converter with internal 1.45 V reference and temperature sensor-enabling self-calibrated sensing without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC with 3-stage pipeline; enables deterministic real-time control with minimal code footprint. |
| Max Clock Speed | 32 MHz (41 DMIPS); supports high-throughput sensor fusion or motor control loops in compact firmware. |
| Flash / RAM | 16 KB code flash, 2 KB SRAM; sufficient for bootloader + application logic with RTOS or bare-metal scheduling. |
| ADC | 10-bit resolution, 6 input channels, internal 1.45 V reference; eliminates need for external voltage reference in precision analog monitoring. |
| Low-Power Modes | HALT (66 μA/MHz), STOP (0.57 μA w/ RTC+LVD); extends battery life in wireless sensor nodes beyond 5 years. |
| Operating Voltage | 1.6–5.5 V single supply; compatible with coin cells (e.g., CR2032), Li-ion, or 3.3/5 V rail systems without level-shifting. |
| Temp Range | -40°C to +85°C (D-grade); qualified for industrial control panels, HVAC actuators, and factory-floor instrumentation. |
Pinout & Package
Package: 20-pin TSSOP (4.4 × 6.5 mm, 0.65-mm pitch), JEDEC MS-013AC, RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Primary 1.6–5.5 V supply; decoupling required within 5 mm of pin for stable 32 MHz operation. |
| VSS | Ground | Digital ground reference; separate analog ground not required-shared VSS simplifies PCB layout. |
| P20/ANI0/AVREFP | Analog input / ADC reference positive | Configurable as ADC channel 0 or AVREFP; enables ratiometric measurements using external sensor bridge. |
| P21/ANI1/AVREFM | Analog input / ADC reference negative | Configurable as ADC channel 1 or AVREFM; allows differential ADC sampling with programmable gain. |
| P10/SCK00/SCL00 | SPI clock / I²C clock | Shared SCK00 (CSI) and SCL00 (I²C); supports dual-interface communication with same pin-reduces routing complexity. |
| P11/SI00/RxD0/TOOLRxD/SDA00 | SPI input / UART RX / I²C data | Multi-function pin enabling debug (TOOLRxD), serial comms (RxD0), and sensor interface (SDA00) without external mux. |
| P12/SO00/TxD0/TOOLTxD/SDA01 | SPI output / UART TX / I²C data | Enables full-duplex UART or half-duplex I²C while retaining SPI slave capability-ideal for multi-protocol gateways. |
| P13/INTP0/TOOLCLK | External interrupt / debug clock | Supports wake-up from STOP mode via external event and provides clock signal for on-chip debug interface. |
| P14/INTP1 | External interrupt input | Dedicated edge-triggered interrupt for emergency shutdown or button press-no software polling needed. |
| P15/INTP2 | External interrupt input | Second independent interrupt source for redundant safety monitoring or dual-sensor event capture. |
Key Features
| Feature | Design Value |
|---|---|
| Self-programming flash | Enables field firmware updates via boot swap function-no external programmer required for OTA upgrades. |
| Background data flash rewrite | BGO allows concurrent program execution and non-volatile parameter storage-critical for logging without system stall. |
| On-chip RTC with calendar | 99-year calendar, alarm, and clock correction eliminate need for external RTC IC and reduce BOM cost by $0.35+. |
| Hardware DMA controller | 2-channel DMA moves ADC results or UART buffers directly to RAM-reduces CPU load by up to 40% in data-intensive tasks. |
| Multi-voltage I/O | I/O pins tolerate 1.8/2.5/3.0 V logic levels-enables direct interfacing with legacy sensors or low-voltage FPGAs without level shifters. |
Applications
| Industrial Sensor Node | Smart Thermostat Controller |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity sensor deployed in remote HVAC ducts with 10-year lifespan requirement. IC Role / Device Role / Timing Role: Main system controller executing sensor polling, local PID calculation, and LoRaWAN packet assembly; RTC schedules periodic wake-ups. Use Value: 0.57 μA STOP current + integrated temperature sensor + 10-bit ADC enable accurate, maintenance-free operation without external references or power management ICs. |
Use Scenario: Residential thermostat with display, push buttons, relay drivers, and BLE connectivity. IC Role / Device Role / Timing Role: Central MCU managing user interface, HVAC actuation timing, ambient sensing, and BLE stack timing synchronization. Use Value: Multi-function pins (e.g., P11/P12 shared UART/I²C/SPI) reduce external transceivers; 16 KB flash accommodates BLE host stack + application logic in single chip. |
| Programmable Logic Relay | Portable Medical Monitor |
|
Use Scenario: DIN-rail mounted relay module accepting digital inputs, executing ladder logic, and driving 24 V DC outputs. IC Role / Device Role / Timing Role: Real-time control engine executing scan-based logic with deterministic 100 μs cycle time; PWM timers drive opto-isolated outputs. Use Value: HALT mode (66 μA/MHz) maintains responsiveness while minimizing heat in enclosed enclosures; 8× 16-bit timers provide precise output timing without external counter ICs. |
Use Scenario: Handheld pulse oximeter requiring low-noise analog front-end, battery monitoring, and OLED display refresh. IC Role / Device Role / Timing Role: Signal processor acquiring ADC samples from photodiode amplifier, computing SpO₂, and updating display at 2 Hz. Use Value: Integrated 1.45 V reference ensures stable ADC accuracy across battery discharge; SNOOZE mode allows ADC conversion during low-power sleep-extending runtime by 22% vs. full-wake operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F1006CASM#10 | Includes 4 KB data flash; otherwise identical flash/RAM/peripherals/package. | Required when non-volatile parameter storage (e.g., calibration data, device ID) must survive power loss without external EEPROM. | Select R5F1006CASM#10 if field-updatable configuration storage is mandatory; otherwise R5F1016CASM#10 reduces cost and simplifies firmware. |
| STM32G031F8P6 | ARM Cortex-M0+, 64 KB flash, 8 KB RAM, no integrated RTC calendar; requires external crystal for precise timekeeping. | Preferred where ARM ecosystem tooling, larger memory, or USB-CDC debug is prioritized over ultra-low STOP current or integrated calendar RTC. | Choose STM32G031F8P6 only if migrating existing ARM-based firmware; R5F1016CASM#10 offers better power efficiency and timekeeping integration for new low-power designs. |
Compared with R5F1006CASM#10, the R5F1016CASM#10 saves cost and flash overhead where data logging isn't needed; versus STM32G031F8P6, it delivers 2.3× lower STOP current and eliminates external RTC/crystal BOM items-reducing total system size and qualification effort.
Availability
R5F1016CASM#10 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostats, and programmable relays requiring stable component supply, long-term lifecycle support, and guaranteed traceability for ISO 13485 or IEC 61508 compliance programs.
Supply support for R5F1016CASM#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 family targets cost-sensitive, ultra-low-power general-purpose applications-designed to replace 8-bit MCUs while delivering 16-bit performance, integrated peripherals, and robust industrial qualification.
FAQ
What is the maximum operating frequency and corresponding performance of the R5F1016CASM#10?
The R5F1016CASM#10 operates at up to 32 MHz with a high-speed on-chip oscillator, delivering 41 DMIPS of processing performance. Its minimum instruction execution time is 0.03125 μs under these conditions, enabling responsive real-time control in applications such as motor commutation or sensor fusion. The R5F1016CASM#10 maintains this speed across its full 1.6–5.5 V supply range and -40°C to +85°C temperature grade.
Does the R5F1016CASM#10 include data flash memory, and what are the implications for firmware design?
No, the R5F1016CASM#10 does not include data flash memory-unlike the R5F1006CASM#10 variant which provides 4 KB. This means non-volatile parameter storage (e.g., calibration coefficients or device settings) must be implemented externally via EEPROM or FRAM, or managed in code flash with wear-leveling routines. The R5F1016CASM#10 retains full self-programming capability for code updates using its 16 KB flash, but lacks background operation for data storage.
How does the R5F1016CASM#10 support low-power operation in battery-powered systems?
The R5F1016CASM#10 supports multiple ultra-low-power modes: HALT (66 μA/MHz), STOP (0.57 μA with RTC and LVD active), and SNOOZE mode for background ADC conversions. Its STOP mode retains RTC calendar, LVD monitoring, and RAM contents-allowing wake-up on timer, external interrupt, or LVD event. This enables multi-year battery life in applications like wireless sensors, where the R5F1016CASM#10 eliminates the need for external power supervisors or RTC ICs.
What communication interfaces are available on the R5F1016CASM#10, and how are they mapped to pins?
The R5F1016CASM#10 integrates two UART/LIN channels, three I²C/Simplified I²C channels, and two CSI (SPI-compatible) interfaces. Key mappings include P10 (SCK00/SCL00), P11 (SI00/RxD0/SDA00), and P12 (SO00/TxD0/SDA01)-enabling simultaneous UART debug, I²C sensor reads, and SPI flash access using just three pins. This pin multiplexing reduces external component count and PCB layer count in space-constrained designs using the R5F1016CASM#10.
Is the R5F1016CASM#10 pin-compatible with other RL78/G13 variants in the same package?
Yes, the R5F1016CASM#10 is pin-compatible with all 20-pin TSSOP RL78/G13 variants-including R5F1006CASM#10, R5F1016AASM#10, and R5F1016DASM#10-sharing identical pin functions, electrical characteristics, and mechanical footprint. This allows drop-in replacement for memory, temperature grade, or data flash configuration changes without PCB revision, provided firmware accounts for differences in flash size or peripheral enablement in the R5F1016CASM#10.
R5F1016CASM#10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Series:
- RL78/G13
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 32MHz
- Connectivity:
- CSI, I2C, SPI, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 13
- 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 6x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F1016CASM#10 FAQ
1.How can I place an order for R5F1016CASM#10 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F1016CASM#10 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 R5F1016CASM#10 reliable?
The price and inventory of R5F1016CASM#10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F1016CASM#10 is usually 5 days.
3.What payment methods are accepted for R5F1016CASM#10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F1016CASM#10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F1016CASM#10?
R5F1016CASM#10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F1016CASM#10 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 R5F1016CASM#10?
For technical support, including R5F1016CASM#10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F1016CASM#10 requirements.
6.How does Aetrix verify that R5F1016CASM#10 is sourced from the original manufacturer or authorized distributors?
All R5F1016CASM#10 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 R5F1016CASM#10 meets industry standards.
7.What is the process for return or replacement of R5F1016CASM#10?
All R5F1016CASM#10 units undergo pre-shipment inspection (PSI). If there is an issue with R5F1016CASM#10, 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 R5F1016CASM#10 part is unused and in its original packaging.
Return procedure for R5F1016CASM#10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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