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Renesas R5F103A7DSP#50
- Part No.:
- R5F103A7DSP#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 30-LSSOP (0.240", 6.10mm Width)
- Datasheet:
-
R5F103A7DSP#50.pdf
- Description:
- 16BIT MCU RL78/G12 4K 30LSSOP -4
- Quantity:
- Payment:
- Shipping:
Inventory:2,858
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Product details
Overview
R5F103A7DSP#50 from Renesas Electronics is a 30-pin LSSOP packaged 16-bit RL78/G12 microcontroller designed for ultra-low-power embedded control in consumer-grade applications (–40°C to +85°C). It integrates 2 KB code flash, 256 B RAM, 10-bit 8-channel ADC, single UART, and one simplified SPI (CSI) channel, operating from 1.8 V to 5.5 V with 63 μA/MHz active current consumption.
For engineers reviewing the R5F103A7DSP#50 datasheet, R5F103A7DSP#50 pinout, R5F103A7DSP#50 application, or R5F103A7DSP#50 equivalent, this device serves as a cost-optimized, low-pin-count MCU for battery-powered sensors, appliance controls, and simple industrial HMI where data flash, DMA, or multiple serial interfaces are not required.
Technical Context
The R5F103A7DSP#50 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting minimum instruction execution time of 0.04167 µs at 24 MHz (high-speed on-chip oscillator) and 1 MB address space. It lacks data flash memory and DMA controller-key differentiators from R5F102-series variants-and uses only the high-speed on-chip oscillator (±5% accuracy over –40°C to +85°C) without external crystal support in default configuration.
Its peripheral set includes 8-channel 10-bit ADC with internal reference (1.45 V), 4-channel 16-bit TAU timer with PWM capability, watchdog and interval timers, on-chip power-on-reset and voltage detector (12-level LVD), and key interrupt support across 6 pins. I/O count is 26 total, including 9 CMOS I/O with configurable pull-up and TTL input buffers.
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 Configuration | 2 KB code flash (1 KB block size), 256 B RAM; sufficient for small firmware images with no data logging or parameter storage. |
| Operating Voltage | 1.8 V to 5.5 V supply range; supports direct connection to Li-ion, alkaline, or regulated 3.3 V/5 V rails without level-shifting. |
| Power Consumption | 63 μA/MHz active current; reduces battery drain in always-on sensor nodes and portable devices. |
| ADC Capability | 10-bit resolution, 8 input channels, internal 1.45 V reference; enables accurate analog sensing of temperature, voltage, or resistive sensors. |
| Serial Interfaces | 1 UART channel + 1 simplified SPI (CSI); adequate for basic host communication and peripheral expansion (e.g., display, EEPROM). |
| Timer Resources | 4-channel 16-bit TAU timer with PWM output; supports motor control, LED dimming, or pulse generation without external ICs. |
Pinout & Package
30-pin plastic LSSOP package (7.62 mm, 0.65-mm pitch), RoHS-compliant, surface-mountable with standard reflow profile. Pin 1 marked by notch or dot; exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power Supply | Main 1.8–5.5 V supply input; decoupling capacitor required near pin for noise immunity. |
| VSS | Ground Reference | Digital ground return; must be connected to system GND plane with low-inductance path. |
| RESET | Active-Low Reset Input | Asynchronous reset trigger; internal POR/LVD ensures reliable startup without external RC network. |
| P10/SCK00/SCL00 | Serial Clock I/O | Configurable as CSI clock or I²C clock; supports master/slave operation depending on peripheral register settings. |
| P11/SI00/RxD0/SDA00 | Serial Data Input / UART RX | Primary UART receive line; also serves as CSI data input or I²C data line-function selected via PIOR register. |
| P12/SO00/TxD0/TOOLTxD | Serial Data Output / UART TX | UART transmit output; dual-use as CSI data output or debug tool interface; open-drain capable when configured. |
| P20/ANI0/AVREFP | Analog Input / ADC Reference+ | Primary analog input channel; also supplies positive reference for internal ADC-must be stable and filtered. |
| P21/ANI1/AVREFM | Analog Input / ADC Reference− | Second analog input; doubles as negative ADC reference-enables differential measurement mode. |
| P40/TOOL0 | Debug Interface I/O | Used for on-chip debugging during development; not intended for production signal routing. |
| REGC | Regulator Capacitor Terminal | Connects to VSS via 0.47–1 µF capacitor; stabilizes internal voltage regulator for analog/ADC performance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power HALT/STOP/SNOOZE modes | Reduces current to sub-μA levels during idle; extends battery life in intermittent-sensing applications. |
| On-chip high-speed oscillator (1–24 MHz) | Eliminates need for external crystal; ±5% accuracy over full temp range simplifies BOM and layout. |
| 10-bit 8-channel ADC with internal 1.45 V reference | Enables precise analog measurements without external reference IC or calibration circuitry. |
| 4-channel 16-bit timer with PWM output | Supports motor speed control, LED brightness adjustment, or timing-critical event generation in firmware. |
| 12-level voltage detector (LVD) | Provides programmable brown-out detection and reset; prevents erratic behavior during supply droop. |
| On-chip debug interface (via TOOL0/TOOLRxD/TOOLTxD) | Allows in-circuit programming and real-time debugging without JTAG adapter-reduces development cost. |
Applications
| Smart Home Sensor Node | Appliance Control Panel |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data via UART to gateway. IC Role / Device Role / Timing Role: Primary system controller executing sensor readout, ADC conversion, and UART transmission. Use Value: 63 μA/MHz active current and STOP mode enable multi-year battery life; integrated ADC eliminates external signal conditioning. |
Use Scenario: Keypad-driven UI for microwave oven with buzzer feedback and display interface. IC Role / Device Role / Timing Role: Central control unit managing key scan, buzzer output, and segment display drive via GPIO/timer. Use Value: On-chip buzzer/clock output controller (PCLBUZ0) replaces external oscillator; 26 GPIOs support direct keypad matrix and display segment mapping. |
| Industrial Motor Starter | Portable Medical Monitor |
Use Scenario: Compact motor starter module monitoring current sense and controlling relay via PWM. IC Role / Device Role / Timing Role: Real-time motor control processor executing current sampling, fault detection, and gate drive timing. Use Value: 4-channel TAU timer delivers synchronized PWM outputs for phase control; 10-bit ADC resolves current shunt voltage with <1% error. |
Use Scenario: Handheld pulse oximeter requiring analog front-end, LED drive, and serial telemetry. IC Role / Device Role / Timing Role: Signal acquisition and processing engine handling photodiode amplification, LED timing, and UART telemetry. Use Value: Internal 1.45 V ADC reference ensures consistent SpO₂ calculation across battery discharge; low-voltage operation (1.8 V) extends runtime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F102A7DSP#50 | Includes 2 KB data flash, DMA controller, CRC engine, and higher oscillator accuracy (±1.0%) | Required for firmware-over-the-air updates, cyclic redundancy checks, or background data logging | Select when non-volatile parameter storage or enhanced safety features are mandatory |
| R5F103AAASP#V0 | Same RL78/G12 core but in 20-pin LSSOP; 16 KB code flash, 2 KB RAM, same peripheral set | Suitable for space-constrained designs needing more memory but fewer I/O lines | Choose for compact PCB layouts where 26 GPIOs are unnecessary and higher code density is needed |
Compared with R5F103A7DSP#50, R5F102A7DSP#50 adds data flash and safety peripherals at higher cost and power, while R5F103AAASP#V0 trades I/O count for memory headroom in smaller footprint-both require PCB redesign due to pin count and package differences.
Availability
R5F103A7DSP#50 is available at Aetrix Electronics and suitable for smart home sensors, appliance control panels, and portable medical monitors requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for R5F103A7DSP#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 headquartered in Tokyo, Japan, delivering trusted embedded solutions for automotive, industrial, and IoT markets since 2010.
The RL78/G12 product line targets cost-sensitive, ultra-low-power general-purpose applications-including consumer appliances, sensors, and industrial controls-by balancing performance, integration, and energy efficiency in compact packages.
FAQ
What is the maximum operating frequency of the R5F103A7DSP#50?
The R5F103A7DSP#50 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 up to 20 MHz is possible but requires additional components and is not enabled by default in this variant.
Does the R5F103A7DSP#50 include data flash memory?
No, the R5F103A7DSP#50 does not include data flash memory. As confirmed in Renesas documentation (R01DS0193EJ0250, Section 1.3.1), R5F103-series devices omit the 2 KB data flash found in R5F102-series counterparts. Firmware must store parameters in code flash or external memory.
What package type and pin count does the R5F103A7DSP#50 use?
The R5F103A7DSP#50 uses a 30-pin plastic LSSOP package (7.62 mm width, 0.65-mm pitch), identified by the "SP" suffix and "#50" embossed tape packaging code. It provides 26 usable I/O pins, including analog inputs, UART, and timer resources.
Can the R5F103A7DSP#50 operate from a 1.8 V supply?
Yes, the R5F103A7DSP#50 is fully specified to operate from 1.8 V to 5.5 V. At 1.8 V, it supports up to 8 MHz system clock (LS mode) and maintains full functionality of ADC, timers, and UART-making it suitable for single-cell lithium or alkaline battery systems.
Is the R5F103A7DSP#50 pin-compatible with other RL78/G12 variants?
No, the R5F103A7DSP#50 is not pin-compatible with 20-pin or 24-pin RL78/G12 variants due to its 30-pin LSSOP footprint. While functional overlap exists with R5F103AAx series, physical layout changes are required for substitution-no drop-in replacement is supported across pin counts.
R5F103A7DSP#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 30-LSSOP (0.240", 6.10mm 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:
- 23
- Program Memory Size:
- 4KB (4K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 8x8/10b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F103A7DSP#50 FAQ
1.How can I place an order for R5F103A7DSP#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F103A7DSP#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 R5F103A7DSP#50 reliable?
The price and inventory of R5F103A7DSP#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F103A7DSP#50 is usually 5 days.
3.What payment methods are accepted for R5F103A7DSP#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F103A7DSP#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F103A7DSP#50?
R5F103A7DSP#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F103A7DSP#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 R5F103A7DSP#50?
For technical support, including R5F103A7DSP#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F103A7DSP#50 requirements.
6.How does Aetrix verify that R5F103A7DSP#50 is sourced from the original manufacturer or authorized distributors?
All R5F103A7DSP#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 R5F103A7DSP#50 meets industry standards.
7.What is the process for return or replacement of R5F103A7DSP#50?
All R5F103A7DSP#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F103A7DSP#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 R5F103A7DSP#50 part is unused and in its original packaging.
Return procedure for R5F103A7DSP#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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