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Renesas R5F11CBCGNA#20
- Part No.:
- R5F11CBCGNA#20
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
R5F11CBCGNA#20.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 32HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,440
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Product details
Overview
R5F11CBCGNA#20 from Renesas Electronics is a 32-pin, 32 KB flash RL78/I1E microcontroller designed for ultra-low-power industrial sensor signal conditioning and control. It integrates a 24-bit ΔΣ A/D converter (85 dB SNDR), 3-channel programmable-gain instrumentation amplifier (x1–x64), 12-bit DAC, 8 KB RAM, and operates from 2.4 V to 5.5 V across −40°C to +105°C. It targets precision analog front-end applications in smart sensors and battery-powered industrial monitoring.
For engineers reviewing the R5F11CBCGNA#20 datasheet, R5F11CBCGNA#20 pinout, R5F11CBCGNA#20 application, or R5F11CBCGNA#20 equivalent, key selection criteria include its HVQFN-32 package, integrated PGA+ΔΣ ADC architecture, real-time clock with calendar, LIN-capable UART, and support for STOP/SNOOZE low-power modes - all critical for embedded analog-sensing systems requiring high-resolution measurement and deterministic timing.
Technical Context
The R5F11CBCGNA#20 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling instruction execution as fast as 0.03125 μs at 32 MHz (high-speed on-chip oscillator) or 0.05 μs at 20 MHz system clock. Its analog subsystem includes a dedicated 24-bit second-order ΔΣ A/D converter with configurable gain, programmable sample rates (488 sps–15.625 ksps), and on-chip SBIAS output (0.5–2.2 V) for MEMS sensor biasing.
It features dual clock domains: high-speed on-chip oscillator (selectable 1–32 MHz, ±2.0% accuracy over −40°C to +105°C) and PLL (up to 64 MHz), plus independent low-speed 15 kHz oscillator for RTC and watchdog. The device supports background data flash rewriting (BGO), self-programming with boot swap, and event-driven peripheral control via Event Link Controller (ELC) with 16 input sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline, 1 MB address space |
| Flash / RAM | 32 KB code flash (1 KB block size), 4 KB data flash (1M rewrite cycles), 8 KB SRAM |
| ADC | 24-bit ΔΣ A/D converter with 85 dB SNDR; 3 differential/4 single-ended PGA inputs |
| Operating Range | VDD = 2.4–5.5 V; TA = −40°C to +105°C (G-grade industrial) |
| Package | 32-pin HVQFN (5 × 5 mm, 0.5 mm pitch), exposed die pad connected to VSS |
| Low-Power Modes | HALT (core stop), STOP (peripheral clocks off), SNOOZE (ADC active during sleep) |
| Serial Interfaces | 2× CSI (SPI-like), 2× UART (1 with LIN support), 2× simplified I²C |
Pinout & Package
32-pin plastic HVQFN (5 × 5 mm, 0.5 mm pitch) with exposed die pad thermally and electrically tied to VSS. Requires external capacitors: 0.47–1 μF between REGC–VSS, 0.22 μF between REGA–AVSS and SBIAS–AVSS. AVDD must match VDD potential; AVSS must match VSS potential.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD / VSS | Power supply / Ground | Main digital power domain; VSS also reference for analog ground (AVSS = VSS) |
| AVDD / AVSS | Analog power / Analog ground | Dedicated analog supply rail; must be same potential as VDD/VSS respectively |
| REGC / REGA | Regulator decoupling terminals | Connect REGC to VSS via 0.47–1 μF capacitor; REGA to AVSS via 0.22 μF capacitor |
| SBIAS | Sensor bias voltage output | Programmable 0.5–2.2 V output for MEMS sensor excitation; requires 0.22 μF to AVSS |
| PGA0P–PGA2P / PGA0N–PGA2N | PGA differential inputs | Three fully differential programmable-gain amplifier input pairs (x1–x64) |
| ANI0–ANI9 / ANX0–ANX5 | Analog input channels | 10 general-purpose analog inputs; ANX pins support configurable op-amp routing |
| AMP0O–AMP2O | Operational amplifier outputs | Three independent op-amp outputs usable as buffers, filters, or signal conditioning stages |
| P10–P15, P40 | General-purpose I/O | 10 total CMOS I/O pins; 6 support N-ch open-drain (VDD-tolerant); pull-up resistors configurable |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power ΔΣ ADC | 24-bit resolution with 85 dB SNDR enables direct high-fidelity sensor digitization without external signal conditioning |
| Integrated PGA array | 3-channel programmable-gain instrumentation amplifier (x1–x64) with selectable differential/single-ended input per channel |
| Background data flash rewrite | BGO allows full CPU operation from program memory while updating 4 KB data flash - essential for firmware-over-the-air and logging |
| Configurable analog matrix | 3-op-amp channels + switch matrix enable flexible analog signal routing (e.g., PGA → filter → DAC feedback path) |
| Event-driven peripheral control | ELC links 16 event sources (e.g., timer overflow, ADC end-of-conversion) directly to peripheral triggers - eliminates CPU polling overhead |
Applications
| Industrial Smart Sensor Node | Portable Gas Detector |
|---|---|
Use Scenario: Battery-powered environmental sensor node measuring temperature, pressure, and gas concentration with onboard calibration and wireless reporting. IC Role / Device Role / Timing Role: Central controller managing sensor excitation (SBIAS), high-resolution ΔΣ conversion, real-time clock timestamping, and LIN/UART communication. Use Value: Integrated PGA+ΔΣ ADC eliminates external signal chain components; SNOOZE mode extends battery life by enabling ADC sampling during low-power sleep. |
Use Scenario: Handheld gas analyzer using electrochemical or NDIR sensors requiring precise bias control and low-noise analog acquisition. IC Role / Device Role / Timing Role: Analog front-end processor providing programmable sensor bias (SBIAS), gain-adjusted signal amplification (PGA), and 24-bit digitization with on-chip temperature compensation. Use Value: On-chip 10-bit temperature sensor and 12-bit DAC allow closed-loop offset calibration; ±2.0% oscillator accuracy ensures stable timing for gas concentration algorithms. |
| Energy Metering Subsystem | Motor Current Monitoring Module |
Use Scenario: Secondary metering unit in smart electricity meters capturing current transformer (CT) or Rogowski coil outputs. IC Role / Device Role / Timing Role: High-accuracy analog acquisition engine performing 24-bit ΔΣ conversion of isolated current signals with programmable gain and phase compensation. Use Value: 85 dB SNDR and configurable PGA gain range (x1–x64) support wide dynamic range (e.g., 1000:1) without hardware reconfiguration. |
Use Scenario: Compact motor drive add-on board monitoring phase currents via shunt resistors with isolation and thermal derating. IC Role / Device Role / Timing Role: Precision analog interface converting shunt voltage to digital, applying real-time offset correction (DAC), and triggering fault response via ELC-linked timers. Use Value: ELC enables sub-microsecond latency from overcurrent detection (ADC threshold) to PWM shutdown - critical for IGBT protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller-with-integrated-precision-ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F11CCCGNA#20 | 36-pin TFBGA variant with 4 PGA channels, 10 ADC inputs, and 2 additional I/O pins | Supports higher channel-count sensor arrays and denser PCB layouts where footprint area is constrained | Select when needing ≥4 differential analog inputs or >10 GPIO; not pin-compatible with R5F11CBCGNA#20 |
| ADUCM360BCPZ32 | Analog Devices ARM Cortex-M3 MCU with 24-bit ΣΔ ADC, but no integrated PGA or SBIAS; requires external bias circuitry | Lacks on-chip sensor excitation and programmable gain - increases BOM count and layout complexity for MEMS/gas sensors | Choose only if ARM toolchain compatibility outweighs integrated analog feature loss; no pin or firmware compatibility |
Compared with R5F11CCCGNA#20, the R5F11CBCGNA#20 offers identical analog performance in a smaller HVQFN-32 package but with fewer I/O and PGA channels; versus ADUCM360BCPZ32, it delivers lower-system-cost integration via on-chip SBIAS, PGA, and op-amps - reducing external component count by up to 7 parts in sensor front-end designs.
Availability
R5F11CBCGNA#20 is available at Aetrix Electronics and suitable for industrial smart sensors, portable gas detectors, energy metering subsystems, and motor current monitoring modules requiring stable component supply, long-term lifecycle support, and guaranteed G-grade temperature performance.
Supply support for R5F11CBCGNA#20 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 manufacturer specializing in microcontrollers, analog, and power solutions for industrial, automotive, and IoT applications.
The RL78/I1E product line is engineered for ultra-low-power, high-precision analog sensing applications - integrating ΔΣ ADCs, PGAs, op-amps, and sensor bias circuitry into a single MCU to simplify front-end design and reduce system cost.
FAQ
What is the maximum operating frequency and instruction execution time for the R5F11CBCGNA#20?
The R5F11CBCGNA#20 supports a maximum high-speed on-chip oscillator frequency of 32 MHz, yielding a minimum instruction execution time of 0.03125 μs under those conditions. At 24 MHz (industrial-grade timing), the execution time is 0.04167 μs. The device also supports PLL operation up to 64 MHz for enhanced throughput in compute-intensive tasks, with the R5F11CBCGNA#20 maintaining full functionality across its specified −40°C to +105°C operating range.
Does the R5F11CBCGNA#20 support simultaneous operation of its 24-bit ΔΣ ADC and CPU?
Yes, the R5F11CBCGNA#20 supports concurrent CPU execution and 24-bit ΔΣ ADC conversion via its SNOOZE mode - allowing the core to enter low-power sleep while the ADC continues sampling and storing results in memory. This capability is enabled by dedicated hardware pathways and does not require CPU intervention, making the R5F11CBCGNA#20 ideal for battery-operated sensor nodes requiring extended runtime without sacrificing resolution.
What are the analog input configurations supported by the R5F11CBCGNA#20's PGA?
The R5F11CBCGNA#20 provides three independent programmable-gain instrumentation amplifier (PGA) channels (PGA0–PGA2), each configurable for either differential or single-ended input mode. Each channel supports gain settings from x1 to x64 in binary steps, with dedicated positive (PGAxP) and negative (PGAxN) input pins routed to ANI/ANX resources. These PGAs feed directly into the 24-bit ΔΣ ADC, and their configuration is controlled entirely in firmware - no external components required for gain selection in the R5F11CBCGNA#20.
How is the SBIAS output used in sensor interfacing with the R5F11CBCGNA#20?
The SBIAS pin on the R5F11CBCGNA#20 delivers a programmable, low-noise bias voltage (0.5 V to 2.2 V) specifically designed to excite MEMS-based sensors such as accelerometers, gyroscopes, or pressure transducers. It requires a 0.22 μF decoupling capacitor to AVSS and operates independently of the main VDD supply. This integrated bias source eliminates the need for external voltage references or op-amp circuits in the R5F11CBCGNA#20's sensor interface, reducing component count and improving stability in industrial environments.
What debug and programming interfaces does the R5F11CBCGNA#20 support?
The R5F11CBCGNA#20 includes an on-chip debug (OCD) function accessible via the TOOL0, TOOLRXD, and TOOLTxD pins, supporting standard Renesas E2 emulator protocols. It also enables self-programming of flash memory with boot swap and flash shield window functions for secure firmware updates. While the R5F11CBCGNA#20 debug interface is intended for development, Renesas explicitly cautions against using OCD in mass-produced units due to flash endurance limitations - production firmware should rely on bootloader-based field updates instead.
R5F11CBCGNA#20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-VFQFN Exposed Pad
- Series:
- RL78/I1E
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- Programmable:
- Not Verified
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 32MHz
- Connectivity:
- CSI, I2C, LINbus, UART/USART
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 10
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.4V ~ 5.5V
- Data Converters:
- A/D 8x10b, 3x24b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F11CBCGNA#20 FAQ
1.How can I place an order for R5F11CBCGNA#20 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F11CBCGNA#20 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 R5F11CBCGNA#20 reliable?
The price and inventory of R5F11CBCGNA#20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F11CBCGNA#20 is usually 5 days.
3.What payment methods are accepted for R5F11CBCGNA#20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F11CBCGNA#20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F11CBCGNA#20?
R5F11CBCGNA#20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F11CBCGNA#20 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 R5F11CBCGNA#20?
For technical support, including R5F11CBCGNA#20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F11CBCGNA#20 requirements.
6.How does Aetrix verify that R5F11CBCGNA#20 is sourced from the original manufacturer or authorized distributors?
All R5F11CBCGNA#20 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 R5F11CBCGNA#20 meets industry standards.
7.What is the process for return or replacement of R5F11CBCGNA#20?
All R5F11CBCGNA#20 units undergo pre-shipment inspection (PSI). If there is an issue with R5F11CBCGNA#20, 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 R5F11CBCGNA#20 part is unused and in its original packaging.
Return procedure for R5F11CBCGNA#20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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