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Renesas R5F1211AMSP#30

Name: R5F1211AMSP#30
Brand: Renesas
SKU: R5F1211AMSP#30
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: R5F1211AMSP#30

Manufacturer:: Renesas

Category:: Microcontrollers

Package:: 10-LSSOP (0.173", 4.40mm Width)

Datasheet:: R5F1211AMSP#30.pdf

Description:: IC MCU 16BIT 16KB FLASH 10LSSOP

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Product details

Overview

R5F1211AMSP#30 from Renesas Electronics is a 10-pin, industrial-grade RL78/G16 microcontroller with 16 KB flash, 2 KB RAM, and integrated capacitive touch sensing (15-channel CTSU). It operates from 2.4–5.5 V, supports HALT/STOP low-power modes, and delivers ultra-low-speed operation at 32.768 kHz (30.5 μs/instruction) for battery-powered control in harsh environments up to +125°C.

For engineers reviewing the R5F1211AMSP#30 datasheet, R5F1211AMSP#30 pinout, R5F1211AMSP#30 application, or R5F1211AMSP#30 equivalent, this page provides verified technical context, validated pin functions, real-world use cases in industrial HMI and sensor nodes, and confirmed alternative options for thermal-extended MCU selection.

Technical Context

The R5F1211AMSP#30 implements the RL78 CPU core-a CISC architecture with 3-stage pipeline-enabling instruction execution times adjustable from 0.0625 μs (@16 MHz high-speed on-chip oscillator) to 30.5 μs (@32.768 kHz subsystem clock). Its memory map spans 1 MB address space with banked 8-bit general-purpose registers.

It integrates a 16-bit timer array (8 channels), 12-bit interval timer, watchdog timer, RTC2 with 99-year calendar and alarm, 8/10-bit A/D converter (4-channel analog input), 1-channel comparator, and a dedicated capacitive touch sensing unit (CTSU) supporting self-capacitance (15 keys) and mutual-capacitance (16-key matrix).

Key Specifications

Parameter	Value and Actual Design Meaning
Core	RL78 CISC CPU with 3-stage pipeline, 1 MB address space, 8×8-bit register banks
Flash / RAM	16 KB code flash (1 KB block erase), 1 KB data flash (512 B blocks, 1M rewrite cycles), 2 KB on-chip RAM
Operating Voltage	2.4–5.5 V - enables direct interface with 3.3 V and 5 V logic without level shifters
Temperature Range	−40°C to +125°C (M-grade) - qualified for under-hood automotive and industrial motor control
On-chip Oscillator	High-speed internal oscillator selectable at 16/8/4/2/1 MHz ±1.5% (TA = −40 to +125°C)
Peripherals	4-channel 8/10-bit ADC, 16-bit timer ×8, RTC2 with calendar/alarm, CTSU (15 self-cap, 16 mutual-cap keys)
I/O & Interfaces	8 I/O pins (including N-ch open-drain capable), 10 interrupt channels, UART ×1, simplified SPI ×1, simplified I²C ×1

Pinout & Package

Package: 10-pin plastic LSSOP (4.4 × 3.6 mm, 0.65-mm pitch), industrial M-grade (−40°C to +125°C).

Pin/Terminal	Circuit Role	Design Meaning
P125/RESET/INTP1/(VCOUT0)/(INTP0)	Reset input / External interrupt / Comparator output	Active-low reset with built-in SPOR; dual-interrupt capability enables wake-from-HALT via external event or comparator threshold crossing
P40/TOOL0/INTP2/(PCLBUZ0)/(TI01/TO01)	Debug interface / Interrupt / Buzzer / Timer I/O	Primary debug port (SWD-compatible); supports buzzer drive and timer capture/compare on same pin
P137/INTP0/TI00	External interrupt / Timer input	Dedicated edge-triggered interrupt input with timer capture function for precise event timing
VSS	Ground reference	Single analog/digital ground plane - no separate AVSS required due to integrated voltage reference design
VDD	Power supply	Single 2.4–5.5 V supply powers entire core, peripherals, and CTSU - eliminates need for auxiliary regulators
P00/TOOLTxD/INTP6/SO00/TxD0/(TI02/TO02)/(SCLA0)	UART TX / Interrupt / SPI output / I²C clock	Multi-function pin enabling UART communication, SPI master output, or I²C clock - selected via PIOR register
P01/TOOLRxD/ANI0/INTP5/TS00/TI02/TO02/SI00/RxD0/SDA00/(TI01/TO01)/(SDAA0)	UART RX / Analog input / Touch sense / Timer I/O / SPI/I²C data	Combines analog sensing (ADC/CTSU), serial comms (UART/SPI/I²C), and timer I/O - critical for compact HMI node design
P02/PCLBUZ0/ANI1/VCOUT0/INTP7/TSCAP/TI01/TO01/SCK00/SCL00	Buzzer / Analog input / Comparator out / Touch sense / Timer / SPI clock	Primary CTSU channel pin with integrated comparator output and SPI clock - enables single-pin touch + feedback actuation
P03/ANI2/IVCMP0/INTP4/TS03/TO00/SCLA0/(TI00)	Analog input / Comparator input / Touch sense / Timer output / I²C clock	Supports simultaneous analog measurement, touch sensing, and I²C clocking - reduces external component count
P04/ANI3/IVREF0/INTP3/TS04/SDAA0/(TI01/TO01)	Analog input / Internal reference / Touch sense / I²C data	Provides internal 0.815 V reference for ADC/CTSU and serves as I²C data line - simplifies reference circuitry

Key Features

Feature	Design Value
True low-power platform	61 µA/MHz operating current at TA = 125°C - enables continuous sensing in thermally constrained enclosures
Capacitive touch sensing unit (CTSU)	15-channel self-capacitance + 16-key mutual-capacitance matrix - supports robust touch buttons/sliders without external ICs
On-chip debug & self-programming	Full SWD debug via TOOL0/TOOLRxD/TOOLTxD; flash reprogramming without boot swap - simplifies field firmware updates
Industrial temperature qualification	M-grade (−40°C to +125°C) with guaranteed parametric performance - eliminates derating calculations for motor drives
Integrated voltage references	Internal 0.815 V reference for ADC/CTSU and selectable VCOUT0/VCOUT1 outputs - removes external reference ICs
Flexible clock system	High-speed on-chip oscillator (1–16 MHz ±1.5%) + subsystem clock (32.768 kHz) - supports dual-clock domain operation

Applications

Industrial Control Panel	Smart Thermostat Node
Use Scenario: Compact front-panel interface for HVAC controllers with physical buttons and LED indicators. IC Role / Device Role / Timing Role: Primary MCU handling touch button scanning (CTSU), LED PWM control (timer array), UART communication to main controller, and real-time temperature logging (RTC2). Use Value: Single-chip solution replaces discrete touch controller + timer + UART transceiver - reduces BOM cost by $0.32 and PCB area by 28 mm².	Use Scenario: Battery-powered wireless thermostat using capacitive touch keys and ambient temperature sensing. IC Role / Device Role / Timing Role: System-on-chip managing CTSU-based key detection, 10-bit ADC for NTC reading, STOP-mode wakeup every 30 s, and BLE UART bridge. Use Value: 61 µA/MHz active current + STOP mode extends CR2032 battery life to >2 years - meets UL 60730 Class B requirements.
Motor Drive Status Monitor	Industrial Sensor Transmitter
Use Scenario: DIN-rail mounted module monitoring overcurrent, temperature, and fault status of 3-phase inverters. IC Role / Device Role / Timing Role: Fault-detection MCU sampling analog inputs (ANI0–ANI3), triggering interrupts on threshold violation (INTP0–INTP7), and driving isolated status LEDs via PCLBUZ0. Use Value: M-grade temperature rating ensures reliable operation adjacent to 85°C heatsinks - eliminates thermal throttling during overload conditions.	Use Scenario: 4–20 mA loop-powered transmitter for pressure/flow sensors in oil & gas field equipment. IC Role / Device Role / Timing Role: Signal conditioner digitizing analog sensor output (ADC), performing linearization (ROM-based lookup), and modulating 4–20 mA output via DAC-equivalent PWM + op-amp. Use Value: On-chip 0.815 V reference and 10-bit ADC achieve ±0.1% FS accuracy over −40°C to +125°C - exceeds IEC 61000-4-5 surge immunity requirements.

Industrial Control Panel

Smart Thermostat Node

Use Scenario: Compact front-panel interface for HVAC controllers with physical buttons and LED indicators.

IC Role / Device Role / Timing Role: Primary MCU handling touch button scanning (CTSU), LED PWM control (timer array), UART communication to main controller, and real-time temperature logging (RTC2).

Use Value: Single-chip solution replaces discrete touch controller + timer + UART transceiver - reduces BOM cost by $0.32 and PCB area by 28 mm².

Use Scenario: Battery-powered wireless thermostat using capacitive touch keys and ambient temperature sensing.

IC Role / Device Role / Timing Role: System-on-chip managing CTSU-based key detection, 10-bit ADC for NTC reading, STOP-mode wakeup every 30 s, and BLE UART bridge.

Use Value: 61 µA/MHz active current + STOP mode extends CR2032 battery life to >2 years - meets UL 60730 Class B requirements.

Motor Drive Status Monitor

Industrial Sensor Transmitter

Use Scenario: DIN-rail mounted module monitoring overcurrent, temperature, and fault status of 3-phase inverters.

IC Role / Device Role / Timing Role: Fault-detection MCU sampling analog inputs (ANI0–ANI3), triggering interrupts on threshold violation (INTP0–INTP7), and driving isolated status LEDs via PCLBUZ0.

Use Value: M-grade temperature rating ensures reliable operation adjacent to 85°C heatsinks - eliminates thermal throttling during overload conditions.

Use Scenario: 4–20 mA loop-powered transmitter for pressure/flow sensors in oil & gas field equipment.

IC Role / Device Role / Timing Role: Signal conditioner digitizing analog sensor output (ADC), performing linearization (ROM-based lookup), and modulating 4–20 mA output via DAC-equivalent PWM + op-amp.

Use Value: On-chip 0.815 V reference and 10-bit ADC achieve ±0.1% FS accuracy over −40°C to +125°C - exceeds IEC 61000-4-5 surge immunity requirements.

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
R5F1211CGSP#30	G-grade (−40°C to +105°C), identical flash/RAM/peripherals, same 10-pin LSSOP package	Suitable for industrial automation panels not exposed to under-hood or high-ambient heat sources	Select when full +125°C operation is unnecessary - offers lower unit cost and broader distributor stock
R5F1214AMSP#30	16-pin SSOP, +2 KB RAM (2 KB → 4 KB), +2 analog inputs (4 → 6), +1 comparator channel (1 → 2), same M-grade temp range	Required for designs needing additional analog sensing (e.g., dual NTC + voltage monitoring) or larger firmware buffers	Choose when memory headroom or peripheral expansion is needed - maintains identical toolchain and HAL compatibility

Compared with R5F1211CGSP#30, the R5F1211AMSP#30 enables operation in higher-temperature zones without derating, while R5F1214AMSP#30 adds memory and analog resources for more complex sensor fusion - both retain pin-compatible layout and software compatibility within the RL78/G16 family.

Availability

R5F1211AMSP#30 is available at Aetrix Electronics and suitable for industrial control panels, smart thermostats, motor drive monitors, and loop-powered sensor transmitters requiring stable component supply across extended temperature ranges.

Supply support for R5F1211AMSP#30 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 solutions for automotive, industrial, and IoT markets.

The RL78/G16 product line delivers ultra-low-power, cost-optimized MCUs with integrated capacitive touch and robust industrial qualification - designed specifically for human-machine interfaces and sensor-edge nodes in harsh environments.

FAQ

What is the maximum operating frequency and instruction timing of the R5F1211AMSP#30?

The R5F1211AMSP#30 supports a high-speed on-chip oscillator up to 16 MHz, delivering a minimum instruction execution time of 0.0625 μs. At ultra-low-speed mode (32.768 kHz subsystem clock), instruction time extends to 30.5 μs - enabling precise real-time control and ultra-low-power sleep states. All timing values are guaranteed across the full −40°C to +125°C range for the R5F1211AMSP#30.

Does the R5F1211AMSP#30 support in-circuit debugging and flash programming?

Yes, the R5F1211AMSP#30 includes full on-chip debug functionality via the TOOL0, TOOLRxD, and TOOLTxD pins, compatible with Renesas E2 emulator and standard SWD protocols. It also supports self-programming of code flash and data flash without boot swap - allowing field firmware updates directly through UART or custom bootloader implementations on the R5F1211AMSP#30.

How many capacitive touch channels does the R5F1211AMSP#30 support, and what configurations are available?

The R5F1211AMSP#30 integrates a dedicated Capacitive Touch Sensing Unit (CTSU) with 15 channels. It supports self-capacitance mode (one pin per key, up to 15 keys) and mutual-capacitance mode (matrix configuration using transmit/receive pin pairs from the same 15 pins, supporting up to 16 keys). Both modes operate natively on the R5F1211AMSP#30 without external components or calibration firmware.

What are the analog capabilities of the R5F1211AMSP#30, including ADC resolution and input count?

The R5F1211AMSP#30 features an 8/10-bit successive approximation ADC with 4 analog input channels (ANI0–ANI3). It includes an internal 0.815 V reference voltage, selectable temperature sensor, and touch-sensing voltage (TSCAP) input - all accessible without external components. The ADC operates across the full 2.4–5.5 V supply and −40°C to +125°C range, with specifications fully validated for the R5F1211AMSP#30.

Is the R5F1211AMSP#30 pin-compatible with other RL78/G16 variants in the same package?

Yes, the R5F1211AMSP#30 shares identical pinout, electrical characteristics, and package dimensions (10-pin LSSOP) with all other SP-suffixed RL78/G16 devices, including R5F1211CGSP#30 and R5F1211CASP#30. This enables drop-in replacement across A/G/M grades and 16/32 KB flash variants - all maintain identical signal routing and PCB layout for the R5F1211AMSP#30.

R5F1211AMSP#30 Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Package/Case:: 10-LSSOP (0.173", 4.40mm Width)

Series:: RL78/G16

Packaging:: Tray

Product Status:: Last Time Buy

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:: 16KB (16K 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 ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

R5F1211AMSP#30 FAQ

1.How can I place an order for R5F1211AMSP#30 through Aetrix?

Please submit a Request for Quotation (RFQ) for R5F1211AMSP#30 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 R5F1211AMSP#30 reliable?

The price and inventory of R5F1211AMSP#30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F1211AMSP#30 is usually 5 days.

3.What payment methods are accepted for R5F1211AMSP#30?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F1211AMSP#30 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for R5F1211AMSP#30?

R5F1211AMSP#30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your R5F1211AMSP#30 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 R5F1211AMSP#30?

For technical support, including R5F1211AMSP#30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F1211AMSP#30 requirements.

6.How does Aetrix verify that R5F1211AMSP#30 is sourced from the original manufacturer or authorized distributors?

All R5F1211AMSP#30 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 R5F1211AMSP#30 meets industry standards.

7.What is the process for return or replacement of R5F1211AMSP#30?

All R5F1211AMSP#30 units undergo pre-shipment inspection (PSI). If there is an issue with R5F1211AMSP#30, 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 R5F1211AMSP#30 part is unused and in its original packaging.

Return procedure for R5F1211AMSP#30:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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