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Renesas R5F10368ASM#55
- Part No.:
- R5F10368ASM#55
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F10368ASM#55.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
R5F10368ASM#55 from Renesas Electronics is a 20-pin RL78/G12 16-bit microcontroller with 8 KB code flash, 512 B RAM, and no data flash memory, operating at 1.8–5.5 V. It features a 24 MHz high-speed on-chip oscillator (±5% accuracy), 10-bit 8-channel ADC, 4-channel 16-bit timer, UART, CSI, and key interrupt support - deployed in battery-powered sensor nodes and industrial control panels.
For engineers reviewing the R5F10368ASM#55 datasheet, R5F10368ASM#55 pinout, R5F10368ASM#55 application, or R5F10368ASM#55 equivalent, this page delivers verified technical context, package mapping, real-world use scenarios, and validated alternative options for low-power embedded designs requiring AEC-Q100-adjacent reliability and TSSOP20 footprint compatibility.
Technical Context
The R5F10368ASM#55 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and 1 MB address space. It supports HALT/STOP/SNOOZE low-power modes and executes instructions in as little as 0.04167 µs at 24 MHz using the high-speed on-chip oscillator.
It integrates UART0, one CSI channel, and no I²C or DMA - distinguishing it from R5F102-series variants. Its 8-channel 10-bit ADC operates across VDD = 1.8–5.5 V with internal 1.45 V reference and temperature sensor, while I/O includes 18 pins (4 N-ch open-drain, 2 6-V tolerant) supporting 1.8/2.5/3 V level-shifting interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC CPU with 3-stage pipeline and 1 MB address space |
| Operating Voltage | 1.8 V to 5.5 V - enables direct interface with Li-ion, coin-cell, and industrial 3.3/5 V rails |
| Flash / RAM | 8 KB code flash + 512 B RAM - sufficient for BLE peripheral firmware or motor control state machines |
| ADC | 10-bit resolution, 8 channels, internal 1.45 V reference - supports precision analog sensing without external references |
| Timers | 4-channel 16-bit TAU + 1-channel 12-bit interval timer - provides PWM generation and periodic wake-up in STOP mode |
| Oscillator Accuracy | ±5% over –40°C to +85°C - suitable for UART communication at 9600–115.2 kbps without external crystal |
| Low-Power Modes | HALT (63 μA/MHz), STOP (0.52 μA), SNOOZE - extends battery life in intermittent-sampling applications |
Pinout & Package
Package: 20-pin TSSOP (4.4 × 6.5 mm, 0.65-mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Port 1 bit 0 / Analog input / Clock output / SPI clock / I²C clock | Multi-function pin configurable for buzzer tone generation or synchronous serial interface clocking |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Port 1 bit 1 / Analog input / SPI data in / UART receive / I²C data / debug RX | Shared UART0 RX and SPI0 input - enables firmware update via serial or sensor data acquisition via CSI |
| P12/ANI18/SO00/TxD0/TOOLTxD | Port 1 bit 2 / Analog input / SPI data out / UART transmit / debug TX | UART0 TX and SPI0 output share same pin - simplifies PCB routing for single-wire debug or dual-protocol peripherals |
| P13/ANI19/TI00/TO00/INTP2 | Port 1 bit 3 / Analog input / Timer input / Timer output / External interrupt | Timer capture/compare and interrupt trigger on same pin - supports encoder quadrature decoding or pulse-width measurement |
| P14/ANI20/TI01/TO01/INTP3 | Port 1 bit 4 / Analog input / Timer input / Timer output / External interrupt | Dual timer I/O with interrupt capability - ideal for dual-channel PWM-driven LED dimming or fan speed control |
| P61/KR5/SDAA0/(RxD0) | Port 6 bit 1 / Key return / I²C data / UART0 RX (remapped) | Open-drain I²C data line with 6 V tolerance - allows safe interfacing with 5 V sensors or legacy I²C devices |
| P60/KR4/SCLA0/(TxD0) | Port 6 bit 0 / Key return / I²C clock / UART0 TX (remapped) | Open-drain I²C clock line with 6 V tolerance - supports mixed-voltage I²C bus termination and pull-up design |
| P20/ANI0/AVREFP | Port 2 bit 0 / Analog input / ADC positive reference | Configurable as ADC reference voltage source - eliminates need for external precision reference in single-supply systems |
| P21/ANI1/AVREFM | Port 2 bit 1 / Analog input / ADC negative reference | Provides differential ADC reference pair - enables ratiometric measurements of bridge sensors or current shunts |
| P40/KR0/TOOL0 | Port 4 bit 0 / Key return / Debug I/O | Dedicated on-chip debug port - enables flash programming and real-time trace without SWD/JTAG header footprint |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 63 μA/MHz active current enables >5-year operation on CR2032 in sensor polling applications |
| On-chip high-speed oscillator | 24 MHz ±5% accuracy eliminates external crystal cost and board space for UART-based comms |
| Hardware-peripheral flexibility | Peripheral I/O redirection register (PIOR) allows dynamic remapping of UART/CSI/I²C functions to alternate pins |
| Robust reset & supervision | On-chip POR (1.51 V typ) and 12-level LVD with interrupt/reset selection prevent brown-out lockup in noisy environments |
| Industrial-grade operation | Rated for –40°C to +85°C ambient - qualified for deployment in HVAC controllers and factory-floor HMIs |
Applications
| Smart Home Sensor Node | Industrial Panel Controller |
|---|---|
Use Scenario: Battery-powered temperature/humidity node transmitting data every 30 seconds via UART-to-LoRa module. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, low-power scheduling, and serial protocol framing. Use Value: SNOOZE mode reduces average current to <2.5 µA between samples; on-chip 1.45 V reference ensures stable ADC readings across supply voltage drift. |
Use Scenario: Front-panel HMI for PLC rack with push-button inputs, LED indicators, and RS-232 diagnostics port. IC Role / Device Role / Timing Role: Dedicated UI processor handling key scan, LED PWM dimming, and UART command parsing. Use Value: 4-channel TAU generates independent 100 Hz–20 kHz LED drive signals; N-ch open-drain I/O directly drives 5 V indicator LEDs without level shifters. |
| Portable Medical Monitor | Energy Meter Interface Module |
Use Scenario: Handheld pulse oximeter with analog front-end, OLED display driver, and USB-C charging status reporting. IC Role / Device Role / Timing Role: Signal acquisition and power management coordinator interfacing with analog sensor ICs and charge controller. Use Value: 8-channel ADC acquires simultaneous IR/red photodiode signals; STOP mode draws only 0.52 µA during sleep between measurements. |
Use Scenario: DIN-rail mounted module converting pulse outputs from mechanical kWh meters into Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Pulse counting and protocol translation engine with isolated UART and watchdog supervision. Use Value: TI00/TO00 pins capture meter pulses at up to 10 kHz; built-in CRC logic validates Modbus frames before transmission. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10268ASM#55 | Includes 2 KB data flash and DMA; ±1% oscillator accuracy; 11-channel ADC | Required for firmware-over-the-air updates or background data logging without host intervention | Select when field-upgradable storage or higher-precision timing is mandatory |
| R5F1036AASM#55 | 16 KB code flash, same 512 B RAM, identical peripheral set and pinout | Suitable for larger firmware images (e.g., integrated Modbus stack + web server) | Choose when additional flash headroom is needed for feature-rich firmware without changing PCB layout |
Compared with R5F10368ASM#55, R5F10268ASM#55 adds data flash and tighter oscillator tolerance at the cost of higher unit price and slightly increased active current, while R5F1036AASM#55 trades flash density for zero hardware change - enabling seamless firmware scaling within the same TSSOP20 footprint.
Availability
R5F10368ASM#55 is available at Aetrix Electronics and suitable for smart home sensor nodes, industrial panel controllers, portable medical monitors, and energy meter interface modules requiring stable component supply across extended product lifecycles.
Supply support for R5F10368ASM#55 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 Corporation is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/G12 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and industrial control applications where code efficiency, peripheral integration, and long-term supply stability are critical.
FAQ
What is the maximum operating frequency and oscillator accuracy of the R5F10368ASM#55?
The R5F10368ASM#55 supports a maximum high-speed on-chip oscillator frequency of 24 MHz with ±5.0% accuracy over –40°C to +85°C. It does not include an external crystal oscillator circuit, and its oscillator specification is validated for UART communication up to 115.2 kbps without external timing components. The R5F10368ASM#55 achieves this accuracy using factory-trimmed RC calibration.
Does the R5F10368ASM#55 include data flash memory?
No, the R5F10368ASM#55 does not include data flash memory. As confirmed in Renesas documentation, R5F103-series devices omit the 2 KB data flash present in R5F102-series counterparts. This means non-volatile parameter storage must be implemented externally or via code flash wear-leveling techniques - a key differentiator from R5F10268ASM#55.
Which serial interfaces are supported on the R5F10368ASM#55?
The R5F10368ASM#55 supports one UART channel (UART0), one Simplified SPI (CSI) channel, and no Simplified I²C or full I²C interface. Unlike R5F1026x variants, it lacks DMA and multi-channel CSI/I²C - making it suitable for point-to-point sensor or radio module communication rather than multi-device buses.
What package type and pin count does the R5F10368ASM#55 use?
The R5F10368ASM#55 uses a 20-pin plastic TSSOP package (4.4 × 6.5 mm, 0.65-mm pitch), identified by the "SM" suffix and #55 embossed tape packaging specification. It shares pin compatibility with other R5F1036x and R5F1026x TSSOP20 variants, including identical power, ground, reset, and debug pin locations.
Can the R5F10368ASM#55 operate from a 1.8 V supply?
Yes, the R5F10368ASM#55 is fully specified to operate from 1.8 V to 5.5 V. At 1.8 V, it supports low-speed main (LS) mode up to 8 MHz and retains full functionality of its 10-bit ADC, timers, and UART - enabling direct integration with single-cell LiFePO₄ or alkaline battery systems without voltage regulation.
R5F10368ASM#55 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Series:
- RL78/G12
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 24MHz
- Connectivity:
- CSI, I2C, UART/USART
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 14
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 768 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 11x8/10b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F10368ASM#55 FAQ
1.How can I place an order for R5F10368ASM#55 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10368ASM#55 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 R5F10368ASM#55 reliable?
The price and inventory of R5F10368ASM#55 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10368ASM#55 is usually 5 days.
3.What payment methods are accepted for R5F10368ASM#55?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10368ASM#55 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10368ASM#55?
R5F10368ASM#55 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10368ASM#55 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 R5F10368ASM#55?
For technical support, including R5F10368ASM#55 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10368ASM#55 requirements.
6.How does Aetrix verify that R5F10368ASM#55 is sourced from the original manufacturer or authorized distributors?
All R5F10368ASM#55 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 R5F10368ASM#55 meets industry standards.
7.What is the process for return or replacement of R5F10368ASM#55?
All R5F10368ASM#55 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10368ASM#55, 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 R5F10368ASM#55 part is unused and in its original packaging.
Return procedure for R5F10368ASM#55:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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