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Renesas R5F10368ASM#75
- Part No.:
- R5F10368ASM#75
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F10368ASM#75.pdf
- Description:
- 16-BIT GENERAL MCU RL78/G12 8K 2
- Quantity:
- Payment:
- Shipping:
Inventory:1,710
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Product details
Overview
R5F10368ASM#75 from Renesas Electronics is a 20-pin TSSOP-packaged RL78/G12 16-bit microcontroller designed for ultra-low-power general-purpose embedded control. It features 8 KB code flash, 512 B RAM, 10-bit 8-channel ADC, 4-channel 16-bit timer, and operates from 1.8 V to 5.5 V at –40°C to +85°C - deployed in battery-powered sensor nodes and industrial HMI panels.
For engineers reviewing the R5F10368ASM#75 datasheet, R5F10368ASM#75 pinout, R5F10368ASM#75 application, or R5F10368ASM#75 equivalent, key selection criteria include its single UART channel, absence of data flash and DMA, TSSOP-20 package compatibility, and ±5.0% high-speed on-chip oscillator accuracy over industrial temperature range.
Technical Context
The R5F10368ASM#75 implements the RL78 CPU core with 3-stage pipeline CISC architecture, 1 MB address space, and minimum instruction execution time of 0.04167 µs at 24 MHz (high-speed on-chip oscillator). It supports HALT, STOP, and SNOOZE low-power modes with 63 µA/MHz active current consumption.
Its peripheral set includes one UART channel, one simplified SPI (CSI) channel, no simplified I²C, 8-channel 10-bit ADC with internal 1.45 V reference, and programmable clock/buzzer output - all configured via dedicated SFRs and peripheral I/O redirection register (PIOR), with no CRC, RAM guard, or SFR guard functions present.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC CPU with 3-stage pipeline; enables deterministic real-time control with 31 DMIPS @ 24 MHz |
| Memory | 8 KB code flash (1 KB block size), 512 B RAM; no data flash - eliminates background rewrite complexity in firmware updates |
| Operating Voltage | 1.8 V to 5.5 V supply; supports direct interface with 1.8/2.5/3.3 V logic without level shifters |
| ADC | 10-bit resolution, 8 input channels, internal 1.45 V reference; suitable for analog sensor signal acquisition in cost-sensitive systems |
| Timers | 4-channel 16-bit timer (TAU0), 1-channel 12-bit interval timer, 1-channel window watchdog; provides PWM-capable timing and safety monitoring |
| Oscillator Accuracy | ±5.0% over TA = –40°C to +85°C (high-speed on-chip oscillator); sufficient for UART communication at 9600–115.2 kbps without external crystal |
| I/O Count | 18 total I/O pins including 2× 6 V-tolerant N-ch open-drain outputs; enables direct drive of LEDs or interfacing with higher-voltage peripherals |
Pinout & Package
Package: PTSP0020JI-A, 20-pin plastic TSSOP (4.4 × 6.5 mm, 0.65-mm pitch), lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Port 1 bit 0 / Analog Input 16 / Programmable Clock Output / SPI Clock / I²C Clock | Multi-function pin configurable as UART clock source, buzzer tone generator, or master clock for peripheral sync |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Port 1 bit 1 / Analog Input 17 / SPI Data In / UART Receive / I²C Data / Debug RX | Primary serial receive path supporting UART bootloading and tool-side debug communication |
| P12/ANI18/SO00/TxD0/TOOLTxD | Port 1 bit 2 / Analog Input 18 / SPI Data Out / UART Transmit / Debug TX | Dual-role transmit pin enabling firmware logging and in-circuit debugging without additional UART hardware |
| P13/ANI19/TI00/TO00/INTP2 | Port 1 bit 3 / Analog Input 19 / Timer Input 0 / Timer Output 0 / Interrupt Pin 2 | Hardware timer capture/compare channel with interrupt capability for precise edge-triggered event handling |
| P14/ANI20/TI01/TO01/INTP3 | Port 1 bit 4 / Analog Input 20 / Timer Input 1 / Timer Output 1 / Interrupt Pin 3 | Second timer I/O pair supporting quadrature decoding or PWM generation with independent interrupt vector |
| P20/ANI0/AVREFP | Port 2 bit 0 / Analog Input 0 / ADC Reference Positive | Configurable as primary analog input or precision ADC reference voltage source for ratiometric measurements |
| P21/ANI1/AVREFM | Port 2 bit 1 / Analog Input 1 / ADC Reference Negative | Provides differential reference point for AVREFP; enables true differential ADC operation on ANI0–ANI1 pair |
| P22/ANI2 | Port 2 bit 2 / Analog Input 2 | Dedicated analog input with shared VDD-supplied reference; used for temperature sensing or voltage monitoring |
| P23/ANI3 | Port 2 bit 3 / Analog Input 3 | Fourth analog input in P2 group; supports simultaneous sampling with other ANIx pins under same trigger |
| P40/KR0/TOOL0 | Port 4 bit 0 / Key Return 0 / Debug Interface I/O | Shared pin for capacitive touch key scanning and debug tool handshake; reduces BOM count in HMI designs |
| P41/ANI22/SO01/SDA01/TI02/TO02/INTP1 | Port 4 bit 1 / Analog Input 22 / SPI Data Out / I²C Data / Timer I/O / Interrupt Pin 1 | High-flexibility pin supporting analog sensing, SPI slave mode, or timer-based pulse generation with interrupt |
| P42/ANI21/SCK01/SCL01/TI03/TO03 | Port 4 bit 2 / Analog Input 21 / SPI Clock / I²C Clock / Timer I/O | Secondary SPI/I²C clock source and timer channel; enables dual-synchronous peripheral control from one port |
| P60/KR4/SCLA0/(TxD0) | Port 6 bit 0 / Key Return 4 / I²C Clock A / UART Transmit (remapped) | Alternate UART TX function allows pin multiplexing when primary TX (P12) is used for other purposes |
| P61/KR5/SDAA0/(RxD0) | Port 6 bit 1 / Key Return 5 / I²C Data A / UART Receive (remapped) | Alternate UART RX function provides redundancy for serial communication in space-constrained layouts |
| P121/KR3/X1/(TI03)/(INTP3) | Port 12 bit 1 / Key Return 3 / Crystal Input / Timer Input / Interrupt Pin | Primary crystal oscillator connection point; also serves as external event counter input or interrupt source |
| P122/KR2/X2/EXCLK/(TI02)/(INTP2) | Port 12 bit 2 / Key Return 2 / Crystal Output / External Clock / Timer Input / Interrupt Pin | Crystal output or external clock input; supports bypass mode for precision timing or low-jitter clock injection |
| P125/KR1/SI01/RESET | Port 12 bit 5 / Key Return 1 / SPI Data In / Reset Input | Active-low reset pin with internal pull-up; doubles as SPI data input when reset functionality is disabled in software |
| P137/INTP0 | Port 13 bit 7 / Interrupt Pin 0 | Dedicated external interrupt input with priority arbitration; used for wake-up from STOP mode or fault detection |
| VDD | Power Supply | Single 1.8–5.5 V supply rail; powers core, peripherals, and I/O - eliminates need for multiple voltage regulators |
| VSS | Ground | Digital ground reference; must be connected to system GND plane with low-impedance path for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power operation | 63 µA/MHz active current enables >5-year battery life in coin-cell-powered sensor endpoints |
| No data flash memory | Eliminates flash wear-out concerns and simplifies firmware update architecture for fixed-function devices |
| Single UART + single CSI channel | Reduces PCB routing complexity and supports basic host communication and sensor interface in compact designs |
| 18-pin I/O with 6 V tolerance | Direct interface with legacy 5 V peripherals avoids level-shifter components and associated board area |
| On-chip high-speed oscillator | 24 MHz ±5.0% accuracy enables reliable UART communication without external crystal - lowers BOM cost |
| Programmable clock/buzzer output | Generates precise audio tones or clock signals for displays, indicators, or synchronous peripherals |
Applications
| Smart Home Sensor Node | Industrial Panel Controller |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data via UART to gateway MCU. IC Role / Device Role / Timing Role: Primary system controller executing sensor readout, calibration, and serial protocol framing. Use Value: 63 µA/MHz active current and STOP-mode current < 0.5 µA extend CR2032 battery life beyond 5 years. |
Use Scenario: Front-panel UI controller managing LED indicators, push-button inputs, and buzzer feedback. IC Role / Device Role / Timing Role: Real-time I/O coordinator with programmable clock output driving LED strobes and buzzer tones. Use Value: 18 GPIOs including 2× 6 V-tolerant pins directly drive indicator LEDs and accept 5 V panel switches without external buffers. |
| Medical Vital Sign Monitor | Appliance Motor Control Interface |
|
Use Scenario: Portable pulse oximeter acquiring analog photodiode signals and computing SpO₂ values. IC Role / Device Role / Timing Role: Signal acquisition engine using 10-bit 8-channel ADC with internal 1.45 V reference. Use Value: Differential AVREFP/AVREFM inputs enable ratiometric measurement against stable internal reference - improves accuracy vs. VDD variation. |
Use Scenario: Washing machine mainboard interface handling motor driver enable, fault reporting, and user input. IC Role / Device Role / Timing Role: Safety-critical I/O manager with window watchdog timer and 4-channel 16-bit timer for PWM fan control. Use Value: Window watchdog ensures fail-safe shutdown if firmware hangs; timer outputs generate precise 25 kHz PWM for brushless motor drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10268ASM#75 | Includes 2 KB data flash and DMA controller; ±1.0% oscillator accuracy; same 8 KB flash, 512 B RAM, TSSOP-20 package | Required where background data logging or high-bandwidth peripheral transfers (e.g., SPI-to-RAM) are needed | Select R5F10268ASM#75 when nonvolatile parameter storage or burst data movement justifies added cost and complexity |
| R5F10369ASM#75 | Same RL78/G12 core, 4 KB code flash (vs. 8 KB), identical peripheral set and pinout; otherwise electrically identical | Suitable for simpler firmware with smaller memory footprint - reduces flash programming time and cost | Choose R5F10369ASM#75 for cost-optimized designs where application code fits within 4 KB and future expansion is unlikely |
Compared with R5F10268ASM#75, the R5F10368ASM#75 trades data flash and tighter oscillator tolerance for lower unit cost and reduced firmware validation scope; versus R5F10369ASM#75, it doubles code flash capacity while maintaining identical power, timing, and I/O behavior - enabling feature-rich firmware without layout change.
Availability
R5F10368ASM#75 is available at Aetrix Electronics and suitable for smart home sensor nodes, industrial HMI panels, portable medical monitors, and appliance control interfaces requiring stable component supply and long-term industrial temperature support.
Supply support for R5F10368ASM#75 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 global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications.
The RL78/G12 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and industrial control applications - emphasizing energy efficiency, integrated analog, and robust real-time performance.
FAQ
What is the maximum operating frequency of the R5F10368ASM#75?
The R5F10368ASM#75 supports a maximum system clock frequency of 24 MHz using its high-speed on-chip oscillator. This yields 31 DMIPS performance and a minimum instruction execution time of 0.04167 µs. External crystal operation is limited to 20 MHz (1.0–20.0 MHz range), and low-speed on-chip oscillator runs at 15 kHz for ultra-low-power standby modes. The R5F10368ASM#75 does not support overclocking beyond these specifications.
Does the R5F10368ASM#75 include data flash memory?
No, the R5F10368ASM#75 does not include data flash memory. As confirmed in the RL78/G12 datasheet Section 1.3.1, data flash (2 KB) is mounted only on R5F102 products - the R5F103 series, including R5F10368ASM#75, omits this feature. Firmware must use code flash for parameter storage or rely on external EEPROM/FRAM if nonvolatile data retention is required.
What are the key differences between R5F10368ASM#75 and R5F10268ASM#75?
The R5F10368ASM#75 and R5F10268ASM#75 share identical package (TSSOP-20), code flash (8 KB), RAM (512 B), and pinout. Key differences are: (1) R5F10268ASM#75 includes 2 KB data flash and 2-channel DMA; (2) R5F10268ASM#75 has ±1.0% oscillator accuracy vs. ±5.0% for R5F10368ASM#75; (3) R5F10268ASM#75 supports CRC, RAM guard, and SFR guard - absent in R5F10368ASM#75.
Can the R5F10368ASM#75 operate across the full industrial temperature range?
Yes, the R5F10368ASM#75 is rated for operation from –40°C to +85°C, meeting industrial temperature requirements. Its ordering code suffix "A" denotes consumer/industrial grade (not "G", which extends to +105°C). All electrical specifications - including oscillator accuracy (±5.0%), ADC performance, and I/O drive strength - are guaranteed across this full range per datasheet Section 2.1.
How many serial communication interfaces does the R5F10368ASM#75 support?
The R5F10368ASM#75 supports exactly one UART channel (UART0), one simplified SPI (CSI) channel (CSI00), and zero simplified I²C channels. It includes one full I²C bus (IICA0) but no simplified I²C (IIC00/IIC01) - a distinction confirmed in Section 1.7 of the datasheet. This configuration suits applications needing basic host communication and one synchronous peripheral interface without I²C bus contention.
R5F10368ASM#75 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Series:
- RL78/G12
- Packaging:
- Tray
- 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#75 FAQ
1.How can I place an order for R5F10368ASM#75 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10368ASM#75 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#75 reliable?
The price and inventory of R5F10368ASM#75 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10368ASM#75 is usually 5 days.
3.What payment methods are accepted for R5F10368ASM#75?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10368ASM#75 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10368ASM#75?
R5F10368ASM#75 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10368ASM#75 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#75?
For technical support, including R5F10368ASM#75 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10368ASM#75 requirements.
6.How does Aetrix verify that R5F10368ASM#75 is sourced from the original manufacturer or authorized distributors?
All R5F10368ASM#75 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#75 meets industry standards.
7.What is the process for return or replacement of R5F10368ASM#75?
All R5F10368ASM#75 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10368ASM#75, 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#75 part is unused and in its original packaging.
Return procedure for R5F10368ASM#75:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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