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Renesas R5F12008MSN#50
- Part No.:
- R5F12008MSN#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
R5F12008MSN#50.pdf
- Description:
- MCU:RL78
- Quantity:
- Payment:
- Shipping:
Inventory:3,572
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Product details
Overview
R5F12008MSN#50 from Renesas Electronics is an 8-pin RL78/G15 16-bit microcontroller with 8 KB code flash, 1 KB RAM, and 1 KB data flash, operating from 2.4 to 5.5 V. It integrates a high-speed on-chip oscillator (1–16 MHz), 8-channel 16-bit timer, 3-channel A/D converter (8/10-bit), 1 comparator, UART, simplified I²C, and simplified SPI - designed for compact industrial sensor nodes and low-power control modules.
For engineers reviewing the R5F12008MSN#50 datasheet, R5F12008MSN#50 pinout, R5F12008MSN#50 application, or R5F12008MSN#50 equivalent, this page delivers verified electrical specs, package mapping to WDFN-8, validated 8-pin multiplexed functions, thermal rating up to +125°C (M-grade), and direct alternative part comparisons - all grounded in Renesas R01DS0420EJ0130 Rev.1.30.
Technical Context
The R5F12008MSN#50 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and 1 MB address space. It supports HALT and STOP low-power modes, selectable power-on-reset (SPOR) with four voltage thresholds, and on-chip debug via TOOLRxD/TOOLTxD pins.
Its peripheral set includes one UART channel, two simplified I²C channels (one fixed, one configurable), one simplified SPI (CSI) channel, and timer array unit (TAU0) with eight 16-bit channels - all accessible through port pins P00–P04, P125, P137, and P40 in its 8-pin WDFN package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline and 1 MB address space |
| Flash Memory | 8 KB code flash (1 KB block size); supports self-programming without boot swap |
| Data Flash | 1 KB data flash (512 B block size); 1,000,000 rewrite cycles at 2.4–5.5 V |
| Oscillator | High-speed on-chip oscillator (1–16 MHz, ±1.0% accuracy at −20 to +85°C); low-speed 15 kHz on-chip oscillator |
| A/D Converter | 8/10-bit resolution; 3 analog input channels (ANI0–ANI3); internal 0.815 V reference |
| Operating Temp | −40°C to +125°C (M-grade industrial qualification) |
| Supply Voltage | Single 2.4 V to 5.5 V rail; SPOR reset thresholds selectable at 2.25/2.68/3.02/4.45 V |
Pinout & Package
Package: 8-pin WDFN (3 × 3 mm, 0.65-mm pitch), exposed die pad for thermal dissipation (no electrical connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P40 | TOOL0 / PCLBUZ0 | Debug interface I/O or programmable clock/buzzer output; shared function controlled by PIOR |
| P125 | RESET̅ | Active-low reset input; supports external reset assertion and internal SPOR detection |
| VSS | Ground | Primary digital ground reference; must be connected to PCB ground plane |
| VDD | Power Supply | Single 2.4–5.5 V supply; decoupling capacitor required per Renesas layout guidelines |
| P01 | TOOLRxD / ANI0 | UART receive input or analog input channel 0; dual-function pin enabled via peripheral redirection |
| P03 | TOOLTxD / ANI2 / IVCMP0 | UART transmit output, analog input 2, or comparator input 0 - function selected by register settings |
| P04 | ANI3 / IVREF0 | Analog input 3 or internal comparator reference voltage source; not a digital I/O by default |
| P137 | INTP0 / TI00 | External interrupt 0 input or timer input 0; supports edge-triggered wake-up from HALT/STOP modes |
Key Features
| Feature | Design Value |
|---|---|
| Low-power operation | 800 µA typical HALT current at 16 MHz; 2.25 µA max STOP mode current at 3.0 V |
| On-chip debug | Full in-circuit debugging via TOOLRxD/TOOLTxD pins - no external JTAG adapter required |
| Flexible clocking | Selectable high-speed oscillator (1/2/4/8/16 MHz) plus external crystal (1–12 MHz) or EXCLK (1–16 MHz) |
| Robust I/O | N-ch open-drain outputs with on-chip pull-ups (10–100 kΩ); 40 mA sink per pin; 100 mA total sink capability |
| Integrated analog | 3-channel A/D with internal 0.815 V reference and single comparator with selectable internal/external reference |
Applications
| Industrial Sensor Node | Smart Thermostat Controller |
|---|---|
Use Scenario: Compact, battery-backed temperature/humidity sensor with local display and wireless reporting. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, buzzer alerts, UART communication to transceiver, and low-power scheduling. Use Value: 8 KB flash accommodates sensor fusion firmware and OTA update buffer; STOP mode extends battery life beyond 5 years at 10-second wake intervals. |
Use Scenario: Residential HVAC control unit requiring precise ambient sensing, user interface feedback, and relay actuation. IC Role / Device Role / Timing Role: Real-time decision engine executing PID loop, reading thermistor inputs, driving LED indicators, and controlling TRIACs via PWM timers. Use Value: 8-channel TAU0 enables simultaneous fan speed control (PWM), valve timing, and buzzer tone generation - all from a single 8-pin MCU. |
| Portable Medical Monitor | Industrial Power Supply Supervisor |
Use Scenario: Battery-powered pulse oximeter with optical sensor interface and OLED status display. IC Role / Device Role / Timing Role: Signal acquisition controller synchronizing LED drive timing, ADC conversion, and serial data output to host MCU. Use Value: 3-channel ADC supports dual-wavelength photodiode inputs; ±1.0% oscillator accuracy ensures reliable pulse interval measurement at +85°C. |
Use Scenario: DIN-rail mounted AC/DC power supply monitoring voltage, current, and temperature with fault logging. IC Role / Device Role / Timing Role: Independent supervisor handling analog monitoring, overvoltage lockout, and nonvolatile event timestamping in data flash. Use Value: 1,000,000-cycle data flash enables 10+ years of timestamped fault logs; M-grade temp rating ensures reliability inside enclosed power cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F12007MSN#50 | 4 KB code flash (vs. 8 KB); identical pinout, package, peripherals, and M-grade temp rating | Suitable where firmware footprint < 32 KB and no future feature expansion is planned | Select when cost sensitivity outweighs headroom for bootloader, safety libraries, or field updates |
| R5F12018MSP#50 | 10-pin LSSOP package; adds 1 extra analog input (ANI1), 1 extra interrupt (INTP7), and second simplified I²C channel | Required when design needs >3 ADC channels or dual I²C buses (e.g., sensor + EEPROM) | Choose only if board layout allows 10-pin footprint and additional I/O justifies larger package |
Compared with R5F12007MSN#50, the R5F12008MSN#50 provides double flash capacity for secure boot and firmware redundancy; versus R5F12018MSP#50, it trades pin count and analog channel count for minimal PCB area in space-constrained designs.
Availability
R5F12008MSN#50 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat controllers, portable medical monitors, and industrial power supply supervisors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R5F12008MSN#50 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/G15 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, space-constrained industrial and consumer control applications - emphasizing energy efficiency, integrated analog, and robust qualification across −40°C to +125°C.
FAQ
What is the maximum operating frequency and accuracy of the on-chip oscillator in R5F12008MSN#50?
The R5F12008MSN#50 features a high-speed on-chip oscillator selectable from 1 MHz to 16 MHz. At −20°C to +85°C, its frequency accuracy is ±1.0% (M-grade specification). Accuracy degrades to ±1.5% at −40°C to −20°C and +85°C to +125°C. The oscillator requires no external components and is factory-trimmed.
Does R5F12008MSN#50 support in-system programming and how many data flash rewrites are guaranteed?
Yes, R5F12008MSN#50 supports self-programming of both code and data flash memory without boot swap. Its 1 KB data flash is rated for 1,000,000 rewrite cycles at VDD = 2.4–5.5 V, with 32-bit granularity and background operation disabled - meaning code execution halts during data flash writes.
What are the analog input capabilities of R5F12008MSN#50 and what reference voltages are available?
R5F12008MSN#50 provides three analog input channels (ANI0–ANI3, though ANI3 serves dual role as IVREF0). It supports 8-bit or 10-bit A/D conversion with an internal reference voltage of 0.815 V (typical). External reference voltage can also be applied via IVREF0 pin for improved precision in varying supply conditions.
How does the R5F12008MSN#50 manage low-power operation and what are the key current specs?
R5F12008MSN#50 offers HALT and STOP low-power modes. In STOP mode, supply current is as low as 0.62 µA (typical) at 3.0 V. HALT mode draws 371–800 µA depending on oscillator source and frequency. These modes retain RAM content and allow wake-up via interrupts or reset - critical for battery-operated systems.
Is R5F12008MSN#50 pin-compatible with other RL78/G15 variants in the same package?
Yes, R5F12008MSN#50 shares identical pinout and WDFN-8 package with R5F12007MSN#50 (4 KB flash) and R5F12008ANS#10 (A-grade). All 8-pin WDFN variants use the same multiplexed function mapping per Table 1-2 of R01DS0420EJ0130, enabling hardware reuse across flash-size and grade variants.
R5F12008MSN#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- RL78/G15
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- CSI, I2C, SPI, UART/USART
- Peripherals:
- POR, PWM, Voltage Detect, WDT
- Number of I/O:
- 5
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 1K x 8
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.4V ~ 5.5V
- Data Converters:
- A/D 3x8/10b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F12008MSN#50 FAQ
1.How can I place an order for R5F12008MSN#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F12008MSN#50 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 R5F12008MSN#50 reliable?
The price and inventory of R5F12008MSN#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F12008MSN#50 is usually 5 days.
3.What payment methods are accepted for R5F12008MSN#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F12008MSN#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F12008MSN#50?
R5F12008MSN#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F12008MSN#50 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 R5F12008MSN#50?
For technical support, including R5F12008MSN#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F12008MSN#50 requirements.
6.How does Aetrix verify that R5F12008MSN#50 is sourced from the original manufacturer or authorized distributors?
All R5F12008MSN#50 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 R5F12008MSN#50 meets industry standards.
7.What is the process for return or replacement of R5F12008MSN#50?
All R5F12008MSN#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F12008MSN#50, 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 R5F12008MSN#50 part is unused and in its original packaging.
Return procedure for R5F12008MSN#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F12008MSN#50 Tags
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