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Renesas R5F103A7DSP#30
- Part No.:
- R5F103A7DSP#30
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 30-LSSOP (0.240", 6.10mm Width)
- Datasheet:
-
R5F103A7DSP#30.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 30LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,633
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Product details
Overview
R5F103A7DSP#30 from Renesas Electronics is a 30-pin LSSOP ultra-low-power 16-bit RL78/G12 MCU designed for cost-sensitive consumer and industrial control applications. It features 2 KB code flash, 256 B RAM, 8-channel 10-bit A/D converter, single UART channel, and operates from 1.8 V to 5.5 V with true low-power consumption (63 μA/MHz) - deployed in smart home sensors and battery-powered metering interfaces.
For engineers reviewing the R5F103A7DSP#30 datasheet, R5F103A7DSP#30 pinout, R5F103A7DSP#30 application, or R5F103A7DSP#30 equivalent, key selection criteria include its 30-pin LSSOP package, absence of data flash memory, -40°C to +85°C industrial-grade temperature range (D-grade), and confirmed peripheral set: 1 UART, 1 CSI, no I²C, no DMA, and no safety functions like CRC or RAM guard.
Technical Context
The R5F103A7DSP#30 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, supporting minimum instruction execution time of 0.04167 µs at 24 MHz using the high-speed on-chip oscillator. Its clock system includes a 15 kHz low-speed on-chip oscillator and selectable high-speed on-chip oscillator (1–24 MHz) with ±5.0% accuracy over –40°C to +85°C.
It integrates an 8-channel 10-bit A/D converter with internal reference (1.45 V), 8-channel 16-bit timer (TAU), watchdog timer, 12-bit interval timer, and programmable clock/buzzer output (PCLBUZ0/PCLBUZ1). Peripheral I/O redirection (PIOR) enables flexible pin assignment for UART0, CSI00, and TAU channels - but excludes I²C, DMA, and safety peripherals present in R5F102 variants.
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 - supports direct interface with 1.8/2.5/3.3 V logic without level shifters |
| Code Flash / RAM | 2 KB flash / 256 B RAM - sufficient for small embedded control firmware with minimal data buffering |
| A/D Converter | 10-bit resolution, 8 input channels, internal 1.45 V reference - suitable for analog sensor monitoring |
| Serial Interfaces | 1 UART channel, 1 simplified SPI (CSI) channel, 0 I²C channels - basic serial communication only |
| Timer Resources | 8-channel 16-bit timer (TAU), 1 watchdog timer, 12-bit interval timer - adequate for PWM, capture, and periodic tasks |
| Temperature Range | –40°C to +85°C (D-grade) - qualified for industrial ambient conditions without derating |
Pinout & Package
Package: 30-pin plastic LSSOP (7.62 mm, 0.65-mm pitch), RoHS-compliant, surface-mountable with standard reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P20/ANI0/AVREFP | Analog input / positive reference | Main analog reference voltage source; connects to external AVDD filter capacitor |
| P01/ANI16/RxD1 | Analog input / UART1 receive | Dual-function pin: supports analog sensing or secondary UART RX (not available in all configurations) |
| P00/ANI17/TxD1 | Analog input / UART1 transmit | Dual-function pin: supports analog sensing or secondary UART TX (not available in all configurations) |
| P120/ANI19 | Analog input | Dedicated analog input channel with internal 1.45 V reference |
| RESET | Active-low reset input | Asynchronous reset pin; accepts external pull-up and debounced pushbutton |
| P137/INTP0 | External interrupt input | Configurable edge-triggered interrupt source for wake-up or event detection |
| P122/X2/EXCLK | Crystal oscillator / external clock input | Connects to crystal (X2) or external clock source for main system timing |
| P121/X1 | Crystal oscillator input | Primary crystal connection point for 1–20 MHz resonator operation |
| REGC | Voltage regulator capacitor terminal | Must connect to VSS via 0.47–1 µF ceramic capacitor for internal LDO stability |
| VSS | Ground reference | Primary digital ground return; requires low-impedance PCB plane connection |
| VDD | Power supply | Single 1.8–5.5 V supply; powers all digital and analog circuitry |
| P60/SCLA0 | I²C clock output (open-drain) | Not functional in R5F103 series - reserved pin with no I²C capability per datasheet |
| P61/SDAA0 | I²C data output (open-drain) | Not functional in R5F103 series - reserved pin with no I²C capability per datasheet |
| P31/TI03/TO03/INTP4/PCLBUZ0 | Timer input/output / interrupt / buzzer clock | Multi-function pin supporting capture, PWM, external interrupt, or programmable tone generation |
| P21/ANI1/AVREFM | Analog input / negative reference | Completes analog reference pair with P20; used for differential A/D measurements |
| P22/ANI2 | Analog input | General-purpose analog input channel with internal reference support |
| P23/ANI3 | Analog input | General-purpose analog input channel with internal reference support |
| P147/ANI18 | Analog input | Additional analog input channel accessible on 30-pin variant |
| P10/SCK00/SCL00 | SPI clock / I²C clock (reserved) | Functional as CSI clock; SCL00 not active - no I²C support in R5F103 |
| P11/SI00/RxD0/TOOLRxD/SDA00 | SPI input / UART0 RX / debug RX | Primary UART receive path; also supports SPI slave input and on-chip debug interface |
| P13/TxD2/SO20/(SDAA0) | UART2 TX / SPI output (reserved) | Functional as UART2 transmit; SO20 and SDAA0 not enabled in R5F103 series |
| P14/RxD2/SI20/SDA20 | UART2 RX / SPI input (reserved) | Functional as UART2 receive; SI20 and SDA20 not enabled in R5F103 series |
| P15/PCLBUZ1/SCK20/SCL20 | Buzzer clock / SPI clock (reserved) | Supports second programmable clock/buzzer output; SCK20/SCL20 not active |
| P12/SO00/TxD0/TOOLTxD | SPI output / UART0 TX / debug TX | Primary UART transmit path; also supports SPI master output and debug interface |
| P16/TI01/TO01/INTP5 | Timer input/output / interrupt | Configurable for edge-triggered capture, PWM output, or external interrupt |
| P17/TI02/TO02 | Timer input/output | Supports input capture or PWM generation; no associated interrupt capability |
| P30/INTP3/SCK11/SCL11 | Interrupt / SPI clock (reserved) | Functional as external interrupt input; SCK11/SCL11 not enabled in R5F103 |
| P50/INTP1/SI11/SDA11 | Interrupt / SPI input (reserved) | Functional as external interrupt input; SI11/SDA11 not enabled in R5F103 |
| P51/INTP2/SO11 | Interrupt / SPI output (reserved) | Functional as external interrupt input; SO11 not enabled in R5F103 |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power operation | 63 μA/MHz active current enables multi-year battery life in intermittent-sensing applications |
| No data flash memory | Eliminates need for data retention management; simplifies firmware updates and reduces BOM cost |
| High-speed on-chip oscillator | ±5.0% accuracy over –40°C to +85°C eliminates external crystal for non-critical timing applications |
| Peripheral I/O redirection (PIOR) | Enables dynamic remapping of UART, CSI, and timer functions to alternate pins without hardware change |
| 10-bit A/D with internal reference | 1.45 V internal reference allows accurate analog measurement without external precision voltage source |
| Programmable clock/buzzer outputs | PCLBUZ0/PCLBUZ1 generate precise audio tones or clock signals directly from timer hardware |
Applications
| Smart Home Sensor Node | Industrial Panel Controller |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor with UART-based reporting to gateway. IC Role / Device Role / Timing Role: Main controller executing sensor readout, ADC conversion, UART transmission, and low-power sleep scheduling. Use Value: 63 μA/MHz active current and STOP/HALT modes extend coin-cell battery life beyond 5 years in 1-minute sampling intervals. |
Use Scenario: Front-panel interface for HVAC equipment with push-button inputs and LED indicators. IC Role / Device Role / Timing Role: Dedicated UI processor handling key scan, LED PWM dimming, UART command parsing, and watchdog supervision. Use Value: 8-channel TAU provides independent PWM outputs for 7 LEDs plus one spare channel for future expansion. |
| Portable Medical Monitor | Energy Meter Interface Module |
Use Scenario: Handheld pulse oximeter with analog front-end and serial telemetry to smartphone. IC Role / Device Role / Timing Role: Signal acquisition controller managing photodiode ADC sampling, digital filtering, and UART data streaming. Use Value: 8-channel 10-bit ADC with internal 1.45 V reference ensures consistent analog gain calibration across production units. |
Use Scenario: DIN-rail mounted sub-meter communicating via RS-485 to building management system. IC Role / Device Role / Timing Role: Protocol translator converting pulse-count inputs to Modbus RTU over UART with configurable baud rate. Use Value: Single UART channel with full-duplex operation and hardware flow control support meets RS-485 transceiver timing requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F102A7DSP#30 | Includes 2 KB data flash, CRC, RAM guard, and ±1.0% oscillator accuracy - adds 0.5 KB ROM overhead | Required for firmware-over-the-air updates or EEPROM-emulation use cases | Select when non-volatile parameter storage or enhanced oscillator stability is mandatory |
| R5F103AAASP#V0 | Same core and peripherals but in 20-pin LSSOP package with 16 KB flash and identical D-grade temp range | Used where board space is constrained and higher code density is needed | Choose for compact designs needing larger firmware capacity without changing peripheral set |
Compared with R5F103A7DSP#30, R5F102A7DSP#30 adds data flash and tighter oscillator tolerance at higher cost and marginally increased power; R5F103AAASP#V0 trades pin count and analog channel count for greater code memory in a smaller footprint - both require PCB layout revision.
Availability
R5F103A7DSP#30 is available at Aetrix Electronics and suitable for smart home sensors, industrial HMI panels, portable medical monitors, and energy meter interface modules requiring stable component supply and long-term industrial qualification.
Supply support for R5F103A7DSP#30 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, and power devices 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 - emphasizing energy efficiency, integrated analog, and simplified development.
FAQ
What is the maximum operating frequency of the R5F103A7DSP#30?
The R5F103A7DSP#30 supports a maximum system clock frequency of 24 MHz using its high-speed on-chip oscillator. When using an external crystal (X1/X2), the maximum frequency is 20 MHz under VDD ≥ 2.7 V, or 8 MHz under VDD = 1.8–2.4 V. All timing specifications in the datasheet assume these limits are respected.
Does the R5F103A7DSP#30 include data flash memory?
No, the R5F103A7DSP#30 does not include data flash memory. This is a defining difference from the R5F102 series. The R5F103A7DSP#30 has 2 KB of code flash only, with no dedicated data flash area - firmware must manage non-volatile storage externally or via code flash wear-leveling techniques.
What UART and I²C capabilities does the R5F103A7DSP#30 support?
The R5F103A7DSP#30 supports exactly one UART channel (UART0) and zero I²C channels. While pins P60/SCLA0 and P61/SDAA0 appear in the pinout, they are reserved and non-functional for I²C in the R5F103 series per Renesas documentation. Simplified I²C (IIC00) is explicitly excluded from R5F103 products.
Is the R5F103A7DSP#30 pin-compatible with any R5F102 devices?
No, the R5F103A7DSP#30 is not pin-compatible with R5F102 devices despite sharing the same 30-pin LSSOP package. Key differences include missing data flash control signals, absence of DMA request pins, and incompatible peripheral mappings (e.g., no CRC or RAM guard signals). PCB redesign is required for substitution.
What is the guaranteed operating temperature range for the R5F103A7DSP#30?
The R5F103A7DSP#30 is specified for industrial-grade operation from –40°C to +85°C, indicated by the "D" suffix in its part number. It is not rated for the extended –40°C to +105°C range (G-grade) or consumer-grade –40°C to +85°C with relaxed test conditions (A-grade).
R5F103A7DSP#30 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 30-LSSOP (0.240", 6.10mm Width)
- Series:
- RL78/G12
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- Programmable:
- Not Verified
- 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:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F103A7DSP#30 FAQ
1.How can I place an order for R5F103A7DSP#30 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F103A7DSP#30 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#30 reliable?
The price and inventory of R5F103A7DSP#30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F103A7DSP#30 is usually 5 days.
3.What payment methods are accepted for R5F103A7DSP#30?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F103A7DSP#30 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F103A7DSP#30?
R5F103A7DSP#30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F103A7DSP#30 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#30?
For technical support, including R5F103A7DSP#30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F103A7DSP#30 requirements.
6.How does Aetrix verify that R5F103A7DSP#30 is sourced from the original manufacturer or authorized distributors?
All R5F103A7DSP#30 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#30 meets industry standards.
7.What is the process for return or replacement of R5F103A7DSP#30?
All R5F103A7DSP#30 units undergo pre-shipment inspection (PSI). If there is an issue with R5F103A7DSP#30, 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#30 part is unused and in its original packaging.
Return procedure for R5F103A7DSP#30:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F103A7DSP#30 Tags
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