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Renesas R5F12008GNS#50
- Part No.:
- R5F12008GNS#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
R5F12008GNS#50.pdf
- Description:
- 16BIT MCU RL78/G15 8K 8WDFN -40
- Quantity:
- Payment:
- Shipping:
Inventory:1,344
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Product details
Overview
R5F12008GNS#50 from Renesas Electronics is an 8-pin industrial-grade RL78/G15 microcontroller with 8 KB code flash, 1 KB RAM, and 1 KB data flash. It operates from 2.4 V to 5.5 V, supports HALT/STOP low-power modes, and integrates an 8/10-bit 3-channel ADC, 8-channel 16-bit timer array, UART, simplified I²C, and simplified SPI (CSI) - deployed in smart sensors and battery-powered industrial controls.
For engineers reviewing the R5F12008GNS#50 datasheet, R5F12008GNS#50 pinout, R5F12008GNS#50 application, or R5F12008GNS#50 equivalent, this page delivers verified electrical specs, package mapping to 8-pin LSSOP/SSOP/WDFN, functional pin roles, real-world use cases, and two validated alternative parts for G-grade temperature operation.
Technical Context
The R5F12008GNS#50 implements the RL78-S2 CPU core with a 3-stage CISC pipeline, 1 MB address space, and selectable high-speed on-chip oscillator (1–16 MHz, ±1.0% accuracy at −20°C to +85°C). Its power management includes SPOR with four reset voltage thresholds and dedicated low-speed 15 kHz watchdog clock.
Peripheral integration centers on the SAU0 serial array unit (2 channels), TAU0 timer array (8 channels), and analog subsystem comprising one comparator (IVCMP0/IVREF0), three ADC inputs (ANI0/ANI2/ANI3), and programmable buzzer/clock output (PCLBUZ0). All I/O pins support N-ch open-drain configuration with internal pull-up resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78-S2 16-bit CISC CPU with 3-stage pipeline and 1 MB address space |
| Flash Memory | 8 KB code flash (1 KB block size) + 1 KB data flash (512 B block, 1M rewrite cycles) |
| Operating Voltage | 2.4 V to 5.5 V - enables direct interface with 3.3 V and 5 V logic systems |
| Temperature Grade | Industrial G-grade: −40°C to +105°C ambient operation |
| ADC | 8/10-bit resolution, 3-channel analog input (ANI0, ANI2, ANI3) with internal 0.815 V reference |
| Oscillators | High-speed on-chip oscillator (1–16 MHz, ±1.0% @ −20°C to +85°C) + low-speed 15 kHz oscillator for WDT |
| Timers | 8-channel 16-bit timer array (TAU0), 1-channel 12-bit interval timer, 1-channel watchdog timer |
| Serial Interfaces | 1 UART channel, 1 simplified I²C channel, 1 simplified SPI (CSI) channel |
Pinout & Package
Package: 8-pin LSSOP (4.4 × 3.6 mm, 0.65-mm pitch), SSOP (4.4 × 5.0 mm, 0.65-mm pitch), or WDFN (3 × 3 mm, 0.65-mm pitch) - all compatible with #50 embossed tape packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P40 | Tool interface / Timer I/O / Comparator output | Primary debug I/O (TOOL0); supports TI01/TO01 timer functions and VCOUT0 output |
| P125 | Reset / Interrupt input | Active-low RESET̅ with internal pull-up; also serves as INTP1 interrupt source |
| VSS | Ground reference | System ground plane connection; required for stable analog and digital operation |
| VDD | Power supply | Single 2.4–5.5 V supply for entire IC - no separate analog/digital rails needed |
| P137 | Interrupt / Timer input | INTP0 interrupt source and TI00 timer input - used for wake-up or event capture |
| P04 | Analog input / Timer I/O / Serial clock | ANI3 analog input, TI01/TO01 timer, SCK00/SCL00 serial clock - shared function pin |
| P03 | UART / Analog / Comparator / Serial data | TOOLTxD (debug), ANI2, IVCMP0, INTP4, TO00, SO00/TxD0, SCLA0 - multi-role I/O |
| P01 | UART / Analog / Serial data | TOOLRxD (debug), ANI0, INTP5, TI02/TO02, SI00/RxD0/SDA00/SDAA0 - primary comms pin |
Key Features
| Feature | Design Value |
|---|---|
| Low-power operation | HALT and STOP modes reduce current draw to µA range - critical for battery-powered field sensors |
| On-chip debug | Integrated TOOL0/TOOLRxD/TOOLTxD pins enable in-circuit debugging without external JTAG adapter |
| Self-programmable flash | Code and data flash support in-application reprogramming without boot swap - simplifies firmware updates |
| Configurable reset | Selectable SPOR detection voltages (2.25 V / 2.68 V / 3.02 V / 4.45 V) allow robust startup across varying supply conditions |
| Hardware BCD correction | Dedicated on-chip circuit accelerates decimal arithmetic for metering and display applications |
| Comparator with dual references | IVCMP0 accepts either internal 0.815 V or external reference - enables flexible threshold detection |
Applications
| Smart Sensor Node | Industrial Thermostat |
|---|---|
|
Use Scenario: Compact environmental sensor measuring temperature/humidity with local processing and UART reporting. IC Role / Device Role / Timing Role: Main controller executing sensor readout, ADC conversion, and UART transmission; uses TAU0 timers for precise sampling intervals. Use Value: 8-pin footprint minimizes PCB area; 3-channel ADC directly interfaces thermistor and humidity IC; G-grade temp range ensures reliability in unconditioned enclosures. |
Use Scenario: Standalone HVAC thermostat with push-button UI, LCD segment driver, and relay control. IC Role / Device Role / Timing Role: System-on-chip managing button interrupts (INTP0–INTP5), buzzer output (PCLBUZ0), and relay timing via TO00/TO01 PWM outputs. Use Value: Integrated PCLBUZ0 drives piezo buzzer without external driver; N-ch open-drain I/O safely switches 24 V relays; 1 KB RAM accommodates UI state machine. |
| Programmable Power Monitor | Asset Tracking Beacon |
|
Use Scenario: DIN-rail mounted device monitoring AC line voltage/current using isolated analog front-end. IC Role / Device Role / Timing Role: Signal conditioner and communication hub - reads isolated ADC outputs, computes RMS values, and transmits via UART to gateway. Use Value: 8/10-bit ADC with internal reference eliminates external precision reference IC; ±1.0% oscillator accuracy ensures reliable UART baud rate generation at 9600 bps. |
Use Scenario: Battery-powered GPS tracker sending periodic location reports over cellular modem via UART. IC Role / Device Role / Timing Role: Low-power coordinator - wakes on RTC alarm, reads GPS NMEA, formats packet, triggers modem TX, then returns to STOP mode. Use Value: STOP mode draws <5 µA; 1 KB data flash stores last known coordinates and network parameters; TOOLRxD/TOOLTxD pins simplify modem AT command testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F12007GNS#50 | 4 KB code flash (vs. 8 KB), identical pinout, same G-grade temp range and peripherals | Suitable for simpler firmware with smaller memory footprint - e.g., basic timer-based controllers | Select when application code size is under 3.5 KB and no future feature expansion is planned |
| R5F12018GSP#50 | 10-pin LSSOP package, adds ANI1 and P02/P00 I/O, retains 8 KB flash and same G-grade rating | Enables additional analog sensing or UART flow control (RTS/CTS) not possible on 8-pin variant | Choose when extra I/O or second analog channel is required without upgrading to 16-pin footprint |
Compared with R5F12007GNS#50 and R5F12018GSP#50, the R5F12008GNS#50 offers optimal balance of memory headroom and minimal board space - ideal for cost-sensitive, space-constrained industrial nodes where 8 KB flash suffices and pin count must be strictly limited.
Availability
R5F12008GNS#50 is available at Aetrix Electronics and suitable for industrial sensor nodes, programmable thermostats, and battery-powered asset trackers requiring stable component supply across extended temperature ranges.
Supply support for R5F12008GNS#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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for industrial, automotive, and IoT markets.
The RL78/G15 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, space-constrained industrial control and sensing applications - emphasizing integrated analog, robust timing, and seamless debug capability.
FAQ
What is the maximum operating temperature specification for the R5F12008GNS#50?
The R5F12008GNS#50 is rated for industrial G-grade operation from −40°C to +105°C ambient temperature. This specification is confirmed in the datasheet's "Operating ambient temperature" section and applies to all package variants (LSSOP, SSOP, WDFN) under VDD = 2.4 V to 5.5 V. The part does not support M-grade (+125°C) operation.
Does the R5F12008GNS#50 support in-system programming via its UART interface?
No, the R5F12008GNS#50 does not support UART-based bootloader programming. Firmware updates require the on-chip debug interface using TOOL0/TOOLRxD/TOOLTxD pins and a Renesas E2 emulator or compatible tool. Self-programming is permitted only from code flash during normal operation - not via serial command protocol.
How many analog input channels are accessible on the R5F12008GNS#50, and which pins do they map to?
The R5F12008GNS#50 provides three analog input channels: ANI0 on P01, ANI2 on P03, and ANI3 on P04. These are explicitly listed in Table 1-2 (Multiplexed Functions of 8-pin Products) and supported by the 8/10-bit A/D converter subsystem. No additional analog inputs (e.g., ANI1 or ANI4–ANI10) are available on this 8-pin variant.
Can the R5F12008GNS#50 generate PWM signals, and if so, how many independent outputs are possible?
Yes, the R5F12008GNS#50 can generate PWM signals using its TAU0 16-bit timer array. As documented in Section 1.6 "Outline of Functions", it supports up to 3 timer output channels, with 2 configurable as PWM outputs. Valid pins include TO00 (P03), TO01 (P04), and TO02 (P01), subject to peripheral I/O redirection register (PIOR) settings.
Is an external crystal oscillator required for the R5F12008GNS#50 to operate, or does it run from internal resources only?
The R5F12008GNS#50 operates fully from its internal high-speed on-chip oscillator (1–16 MHz) and requires no external crystal. X1/X2 pins are not present on the 8-pin package. External oscillators are only relevant for larger RL78/G15 variants (16- and 20-pin) - the R5F12008GNS#50 relies exclusively on internal clock sources.
R5F12008GNS#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 8-WDFN Exposed Pad
- 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, 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F12008GNS#50 FAQ
1.How can I place an order for R5F12008GNS#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F12008GNS#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 R5F12008GNS#50 reliable?
The price and inventory of R5F12008GNS#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F12008GNS#50 is usually 5 days.
3.What payment methods are accepted for R5F12008GNS#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F12008GNS#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F12008GNS#50?
R5F12008GNS#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F12008GNS#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 R5F12008GNS#50?
For technical support, including R5F12008GNS#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F12008GNS#50 requirements.
6.How does Aetrix verify that R5F12008GNS#50 is sourced from the original manufacturer or authorized distributors?
All R5F12008GNS#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 R5F12008GNS#50 meets industry standards.
7.What is the process for return or replacement of R5F12008GNS#50?
All R5F12008GNS#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F12008GNS#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 R5F12008GNS#50 part is unused and in its original packaging.
Return procedure for R5F12008GNS#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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