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Renesas R5F1211CASP#10
- Part No.:
- R5F1211CASP#10
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 10-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F1211CASP#10.pdf
- Description:
- 16BIT MCU RL78/G16 32K 10LSSOP -
- Quantity:
- Payment:
- Shipping:
Inventory:4,243
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Product details
Overview
R5F1211CASP#10 from Renesas Electronics is a 10-pin, 32 KB flash RL78/G16 16-bit microcontroller with integrated capacitive touch sensing (15-channel CTSU), 8/10-bit ADC (4-channel), and dual serial interfaces (UART + simplified I²C). It operates from 2.4–5.5 V, supports HALT/STOP low-power modes, and targets industrial HMI control in space-constrained applications.
For engineers reviewing the R5F1211CASP#10 datasheet, R5F1211CASP#10 pinout, R5F1211CASP#10 application, or R5F1211CASP#10 equivalent, key selection criteria include its LSSOP-10 package, 32 KB code flash + 2 KB RAM, 10-pin I/O count with TSCAP support, and −40°C to +85°C consumer-grade temperature range.
Technical Context
The R5F1211CASP#10 implements the RL78 CPU core with a 3-stage pipeline, supporting instruction execution times from 0.0625 μs (@16 MHz high-speed on-chip oscillator) to 30.5 μs (@32.768 kHz subsystem clock). Its memory architecture includes 32 KB code flash (1 KB block size), 1 KB data flash (512 B block), and 2 KB on-chip RAM.
Peripheral integration includes one 12-bit interval timer, eight 16-bit timers, one watchdog timer, one real-time clock (RTC2) with calendar and alarm, and a dedicated capacitive touch sensing unit (CTSU) supporting both self- and mutual-capacitance configurations across up to 16 keys.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline and 1 MB address space |
| Flash / RAM | 32 KB code flash (1 KB erase blocks); 2 KB on-chip RAM |
| ADC | 8/10-bit resolution A/D converter with 4 analog input channels (ANI0–ANI3) |
| CTSU | Capacitive touch sensing unit with 15 channels, supporting self-capacitance (15 keys) or mutual-capacitance matrix (up to 16 keys) |
| Timers | Eight 16-bit timer array channels; one 12-bit interval timer; one watchdog timer; RTC2 with 99-year calendar |
| Supply / Temp | Single 2.4–5.5 V supply; operating ambient temperature: −40°C to +85°C (A-grade) |
| Package | 10-pin plastic LSSOP (4.4 × 3.6 mm, 0.65-mm pitch) |
Pinout & Package
10-pin plastic LSSOP (4.4 × 3.6 mm, 0.65-mm pitch) with exposed pad not present - standard surface-mount package for compact industrial control modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P125/RESET/INTP1/(VCOUT0)/(INTP0) | Reset input / External interrupt 1 / Voltage comparator output 0 | Active-low reset pin with internal pull-up; supports external wake-up and comparator output routing |
| P40/TOOL0/INTP2/(PCLBUZ0)/(TI01/TO01) | Debug interface / Interrupt 2 / Buzzer output / Timer I/O | Primary debug port (SWD-compatible); configurable as buzzer driver or timer channel I/O |
| P137/INTP0/TI00 | External interrupt 0 / Timer I/O | Dedicated interrupt input with timer capture/compare capability for edge-triggered event handling |
| VSS | Ground reference | Analog/digital common ground plane connection required for stable ADC and CTSU operation |
| VDD | Power supply | Single 2.4–5.5 V supply powering all digital, analog, and peripheral circuits |
| P04/ANI3/IVREF0/INTP3/TS04/SDAA0/(TI01/TO01) | Analog input 3 / Internal voltage reference / Interrupt 3 / Touch sense / I²C slave address | Shared pin for ADC sampling, CTSU electrode, I²C address selection, and interrupt trigger |
| P03/ANI2/IVCMP0/INTP4/TS03/SCLA0/(TI00) | Analog input 2 / Comparator input / Interrupt 4 / Touch sense / I²C clock | Multi-function pin enabling analog sensing, comparator threshold setting, and I²C master clock generation |
| P02/PCLBUZ0/ANI1/VCOUT0/INTP7/TSCAP/TI01/TO01/SCK00/SCL00 | Buzzer output / Analog input 1 / Comparator output / Interrupt 7 / Touch electrode / Timer I/O / SPI clock/I²C clock | Primary CTSU electrode pin with integrated analog front-end, timer I/O, and serial clock routing |
| P01/TOOLRxD/ANI0/INTP5/TS00/TI02/TO02/SI00/RxD0/SDA00/(TI01/TO01)/(SDAA0) | Debug receive / Analog input 0 / Interrupt 5 / Touch electrode / Timer I/O / UART/SPI/I²C data | Core debug and communication pin supporting UART RX, SPI MISO, I²C SDA, and CTSU sensing |
| P00/TOOLTxD/INTP6/SO00/TxD0/(TI02/TO02)/(SCLA0) | Debug transmit / Interrupt 6 / SPI MOSI / UART TX / Timer I/O / I²C clock | Primary debug and serial output pin with UART transmit, SPI output, and timer output capability |
Key Features
| Feature | Design Value |
|---|---|
| Low-power operation | HALT and STOP modes enable sub-μA current draw; 61-μA/MHz active current at TA = 125°C |
| Integrated CTSU | 15-channel capacitive touch sensing unit eliminates external touch controller IC and reduces BOM cost |
| Flexible clocking | High-speed on-chip oscillator selectable from 1–16 MHz with ±1.0% accuracy (−20°C to +85°C) |
| Self-programmable flash | On-chip debug and self-programming support field firmware updates without boot swap or external programmer |
| Robust I/O | 10-pin LSSOP includes N-ch open-drain I/O with 6 V withstand voltage and on-chip pull-up resistors |
| Real-time clock | RTC2 provides 99-year calendar, alarm function, and clock correction - no external crystal required |
Applications
| Appliance Control Panel | Industrial Sensor Node |
|---|---|
|
Use Scenario: Compact white goods control panel with push-button and slider touch interface. IC Role / Device Role / Timing Role: Main MCU executing touch decoding, LED feedback, and appliance state logic. Use Value: Integrated CTSU and 4-channel ADC eliminate external touch IC and analog front-end components. |
Use Scenario: Battery-powered environmental sensor node measuring temperature, humidity, and vibration. IC Role / Device Role / Timing Role: System controller managing sensor readout, low-power scheduling, and UART-based telemetry. Use Value: STOP mode current <1 μA and built-in RTC enable precise wake-up intervals without external timing circuitry. |
| Smart Thermostat Interface | POS Terminal Keypad |
|
Use Scenario: Wall-mounted HVAC thermostat with capacitive touch buttons and rotary encoder emulation. IC Role / Device Role / Timing Role: Dedicated touch controller interfacing with main host via UART or I²C. Use Value: Mutual-capacitance CTSU configuration supports 16-key matrix, enabling full keypad functionality in 10-pin footprint. |
Use Scenario: Point-of-sale terminal with sealed membrane keypad requiring ESD-hardened, noise-immune touch detection. IC Role / Device Role / Timing Role: Local keypad processor performing debouncing, scan timing, and fault reporting. Use Value: On-chip CTSU supports automatic baseline calibration and noise rejection per electrode - critical for noisy retail environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F1211AASP#10 | 16 KB code flash (vs. 32 KB), identical pinout, same LSSOP-10 package and peripherals | Suitable for simpler firmware with lower memory footprint; retains full CTSU, ADC, and timer feature set | Select when application firmware fits within 16 KB and cost optimization is prioritized over future scalability |
| R5F1214CASP#10 | 16-pin SSOP package; adds 2 extra analog inputs (ANI4–ANI5), 1 extra CTSU channel, and SI11/SDA11 I²C interface | Enables expanded sensor connectivity and dual I²C bus operation - requires PCB redesign for 16-pin layout | Choose when additional analog sensing or independent I²C peripherals are needed beyond R5F1211CASP#10's 10-pin limits |
Compared with R5F1211AASP#10, the R5F1211CASP#10 offers double flash capacity for complex touch UIs or OTA update partitions; versus R5F1214CASP#10, it trades pin count and peripheral expansion for minimal board area and lower assembly cost in ultra-compact designs.
Availability
R5F1211CASP#10 is available at Aetrix Electronics and suitable for appliance control panels, industrial sensor nodes, smart thermostats, and POS terminal keypads requiring stable component supply and long-term industrial availability.
Supply support for R5F1211CASP#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/G16 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, space-constrained human-machine interface and sensor control applications - emphasizing integrated CTSU, robust analog, and flexible low-power operation.
FAQ
What is the maximum operating frequency of the R5F1211CASP#10?
The R5F1211CASP#10 supports a maximum system clock of 16 MHz using its high-speed on-chip oscillator. This yields a minimum instruction execution time of 0.0625 μs. The device also supports ultra-low-speed operation down to 32.768 kHz for RTC and deep-sleep functions - all within the same R5F1211CASP#10 silicon.
Does the R5F1211CASP#10 support in-circuit debugging?
Yes, the R5F1211CASP#10 supports full on-chip debug via the TOOL0 (P40) and TOOLRxD/TOOLTxD (P01/P00) pins using Renesas' E2 emulator or compatible SWD tools. Debug functionality remains active during HALT mode, enabling real-time register inspection and breakpoint execution without halting peripheral operation - a key capability of the R5F1211CASP#10.
How many capacitive touch channels does the R5F1211CASP#10 support?
The R5F1211CASP#10 integrates a dedicated Capacitive Touch Sensing Unit (CTSU) supporting up to 15 channels. In self-capacitance mode, each channel maps to one physical electrode (15 keys). In mutual-capacitance mode, the same 15 pins can be configured as transmit/receive pairs to implement a matrix keypad supporting up to 16 keys - a defining feature of the R5F1211CASP#10 for HMI applications.
What is the data flash endurance specification for the R5F1211CASP#10?
The R5F1211CASP#10 includes 1 KB of data flash memory rated for 1,000,000 write/erase cycles (typical) at VDD = 2.4–5.5 V. Each rewrite operates on 32-bit units, and background operation (BGO) is not supported - meaning code execution must pause during data flash writes. This endurance rating is specified in the official R5F1211CASP#10 datasheet Rev.1.30.
Is the R5F1211CASP#10 qualified for industrial temperature range?
No - the R5F1211CASP#10 is an A-grade part rated for −40°C to +85°C, designated for consumer applications. Industrial-grade variants (G-grade: −40°C to +105°C; M-grade: −40°C to +125°C) use different suffixes (e.g., R5F1211CGSP#10). The R5F1211CASP#10's temperature specification is fixed by its ordering code and cannot be upgraded via software or configuration.
R5F1211CASP#10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 10-LSSOP (0.173", 4.40mm Width)
- Series:
- RL78/G16
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- CSI, I2C, SPI, UART/USART
- Peripherals:
- Capacitive Touch, POR, PWM, Voltage Detect, WDT
- Number of I/O:
- 7
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 1K x 8
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.4V ~ 5.5V
- Data Converters:
- A/D 4x8/10b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F1211CASP#10 FAQ
1.How can I place an order for R5F1211CASP#10 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F1211CASP#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 R5F1211CASP#10 reliable?
The price and inventory of R5F1211CASP#10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F1211CASP#10 is usually 5 days.
3.What payment methods are accepted for R5F1211CASP#10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F1211CASP#10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F1211CASP#10?
R5F1211CASP#10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F1211CASP#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 R5F1211CASP#10?
For technical support, including R5F1211CASP#10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F1211CASP#10 requirements.
6.How does Aetrix verify that R5F1211CASP#10 is sourced from the original manufacturer or authorized distributors?
All R5F1211CASP#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 R5F1211CASP#10 meets industry standards.
7.What is the process for return or replacement of R5F1211CASP#10?
All R5F1211CASP#10 units undergo pre-shipment inspection (PSI). If there is an issue with R5F1211CASP#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 R5F1211CASP#10 part is unused and in its original packaging.
Return procedure for R5F1211CASP#10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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