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Renesas R5F102A7DSP#30
- Part No.:
- R5F102A7DSP#30
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 30-LSSOP (0.240", 6.10mm Width)
- Datasheet:
-
R5F102A7DSP#30.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 30LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,425
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Product details
Overview
R5F102A7DSP#30 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 data flash, 2 KB RAM, 16 KB code flash, a 24 MHz high-accuracy on-chip oscillator (±1.0% over –20°C to +85°C), and an 8-channel 10-bit A/D converter - enabling precise sensor interfacing in battery-powered home appliances.
For engineers reviewing the R5F102A7DSP#30 datasheet, R5F102A7DSP#30 pinout, R5F102A7DSP#30 application, or R5F102A7DSP#30 equivalent, key selection considerations include its 2-channel DMA support, CRC hardware acceleration, SFR/RAM guard safety features, and full peripheral I/O redirection capability via PIOR register - all critical for robust firmware updates and real-time control in cost-sensitive industrial edge nodes.
Technical Context
The R5F102A7DSP#30 implements the RL78 CPU core with a 3-stage CISC pipeline, delivering 31 DMIPS at 24 MHz while maintaining true low-power operation down to 63 μA/MHz. Its memory subsystem includes separate code flash (16 KB, 1 KB blocks), data flash (2 KB, 1M rewrite cycles), and RAM (2 KB), all supporting self-programming with flash shield window protection.
Peripherals are organized around two SAU units (supporting UART/CSI/I²C), an 8-channel TAU timer with PWM output capability, a 12-bit interval timer, window watchdog, and dual-voltage detector (12-level LVD). The device supports multiple clock sources: high-speed on-chip oscillator (1–24 MHz), external crystal (1–20 MHz), and low-speed on-chip oscillator (15 kHz), with automatic clock switching and STOP/HALT/SNOOZE power modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline, 1 MB address space, 31 DMIPS @ 24 MHz |
| Memory | 16 KB code flash (1 KB erase blocks), 2 KB data flash (1M rewrites), 2 KB RAM |
| Power | 1.8–5.5 V operation; 63 μA/MHz active current; STOP mode < 0.52 μA typical |
| Clock | High-speed on-chip oscillator: 1–24 MHz, ±1.0% accuracy (–20°C to +85°C) |
| A/D Converter | 10-bit resolution, 8 input channels, internal 1.45 V reference, integrated temperature sensor |
| Timers | 8-channel 16-bit TAU timer (PWM-capable), 12-bit interval timer, window watchdog timer |
| Serial Interfaces | UART ×1, Simplified SPI (CSI) ×1, Simplified I²C ×1, I²C bus ×1 (IICA0) |
| Safety Features | CRC calculation unit, SFR guard, RAM guard, flash shield window, illegal instruction reset |
Pinout & Package
Package: 30-pin plastic LSSOP (7.62 mm, 0.65-mm pitch), RoHS-compliant, moisture sensitivity level MSL3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10 | SCK00/SCL00/(TI07/TO07) | Primary SPI/I²C clock; configurable as timer I/O for flexible signal routing |
| P11 | SI00/RxD0/TOOLRxD/SDA00/(TI06/TO06) | UART receive / SPI input / debug interface; supports peripheral I/O redirection |
| P12 | SO00/TxD0/TOOLTxD/(TI05/TO05) | UART transmit / SPI output / debug interface; enables tool-assisted development |
| P13 | TxD2/SO20/(SDAA0)/(TI04/TO04) | Secondary UART transmit or SPI output; shares pins with I²C addressable slave interface |
| P14 | RxD2/SI20/SDA20/(SCLA0)/(TI03/TO03) | Secondary UART receive or SPI input; supports dual I²C master/slave operation |
| P15 | PCLBUZ1/SCK20/SCL20/(TI02/TO02) | Buzzer/clock output or secondary SPI/I²C clock; enables audio feedback without external driver |
| P20 | ANI0/AVREFP | Analog input channel 0 with positive reference voltage for precision A/D conversion |
| P21 | ANI1/AVREFM | Analog input channel 1 with negative reference voltage for differential measurement |
| P30 | INTP3/SCK11/SCL11 | Interrupt input or secondary SPI/I²C clock; supports multi-interface coexistence |
| P50 | INTP1/SI11/SDA11 | Interrupt input or secondary SPI/I²C data line; enables modular peripheral expansion |
| REGC | Regulator capacitance | Must connect to VSS via 0.47–1 µF capacitor to stabilize internal voltage regulator |
| RESET | Reset input | Active-low asynchronous reset; supports both external push-button and internal LVD/POR |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power architecture | 63 μA/MHz active current; STOP mode < 0.52 μA; HALT/SNOOZE modes for dynamic power scaling |
| Hardware safety acceleration | Dedicated CRC unit, SFR guard, RAM guard, and flash shield window for secure firmware updates |
| Flexible clock management | Multi-source clock generator with automatic failover, oscillation stabilization monitoring (OSTC/OSTS), and frequency tuning |
| Peripheral I/O redirection | PIOR register enables dynamic remapping of UART/CSI/I²C functions across multiple pin groups |
| Integrated analog subsystem | 8-channel 10-bit A/D with internal 1.45 V reference, temperature sensor, and AVREFP/AVREFM inputs |
| Robust reset & supervision | On-chip POR (1.51 V), 12-level LVD with interrupt/reset selection, illegal instruction and parity error detection |
Applications
| Smart Home Thermostat | Industrial Sensor Node |
|---|---|
Use Scenario: Battery-powered wireless temperature/humidity controller with local display and BLE gateway interface. IC Role / Device Role / Timing Role: Main system controller managing A/D sampling, PID loop execution, buzzer alerts, and UART-based BLE module communication. Use Value: 2 KB data flash stores calibration coefficients and historical logs; 63 μA/MHz extends coin-cell life beyond 2 years; SFR guard prevents runtime corruption during OTA updates. |
Use Scenario: DIN-rail mounted environmental monitor collecting vibration, temperature, and humidity data for predictive maintenance. IC Role / Device Role / Timing Role: Real-time acquisition engine with 8-channel A/D, timestamped logging via TAU timers, and UART/RS-485 interface to PLC. Use Value: CRC unit validates sensor data integrity before transmission; 12-level LVD ensures graceful shutdown during brownout; STOP mode reduces average current to <10 μA during idle intervals. |
| White Goods Motor Control | Medical Patient Monitor |
Use Scenario: Compact washing machine mainboard controlling BLDC motor, water valves, and user interface. IC Role / Device Role / Timing Role: Central MCU coordinating PWM-driven motor phases (via TAU), solenoid timing, keypad scanning (KR0–KR9), and buzzer feedback. Use Value: 8-channel TAU provides independent PWM outputs for 3-phase commutation; PCLBUZ0/1 enable audible status tones without external drivers; 2 KB RAM buffers real-time motor diagnostics. |
Use Scenario: Portable pulse oximeter requiring low-noise analog front-end, LED drive control, and Bluetooth LE telemetry. IC Role / Device Role / Timing Role: Signal processor acquiring synchronized red/IR photodiode signals, computing SpO₂, and managing dual LED timing via TAU PWM outputs. Use Value: Internal 1.45 V reference ensures stable A/D accuracy across battery discharge; 10-bit A/D resolution meets ISO 80601-2-61 requirements; 2 KB data flash stores clinical calibration profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F102A8DSP#30 | 8 KB code flash, same 2 KB data flash/RAM/peripherals; higher memory density for larger firmware | Preferred where bootloader, OTA stack, or extended feature set requires >16 KB total flash | Select when firmware size exceeds 16 KB but same low-power profile and peripheral set are required |
| R5F103A7DSP#30 | No data flash (0 KB), no DMA, no CRC/SFR/RAM guard; identical pinout and core performance | Suitable for cost-sensitive applications without field firmware updates or functional safety requirements | Choose for price-sensitive designs omitting data logging, secure boot, or runtime memory protection |
Compared with R5F102A7DSP#30, R5F102A8DSP#30 offers scalable code storage without altering power or timing behavior, while R5F103A7DSP#30 removes safety and nonvolatile data features to reduce BOM cost - making it viable only where those capabilities are unused.
Availability
R5F102A7DSP#30 is available at Aetrix Electronics and suitable for smart home thermostats, industrial sensor nodes, and white goods motor controllers requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for R5F102A7DSP#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 global semiconductor leader headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions 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 safety-aware embedded systems - emphasizing energy efficiency, integrated analog, and hardware-accelerated reliability features.
FAQ
What is the maximum operating frequency and accuracy of the on-chip oscillator in R5F102A7DSP#30?
The R5F102A7DSP#30 features a high-speed on-chip oscillator rated from 1 MHz to 24 MHz, with ±1.0% frequency accuracy over the temperature range of –20°C to +85°C. This specification applies specifically to R5F102x products per datasheet Rev.2.50 Section 1.3.2. The oscillator supports direct CPU clocking without external crystals, reducing BOM count and board space in consumer applications.
Does R5F102A7DSP#30 support hardware CRC calculation and memory protection?
Yes, the R5F102A7DSP#30 includes a dedicated CRC calculation unit, SFR guard, and RAM guard - all confirmed in the RL78/G12 datasheet Section 1.3.3 and Block Diagram (Page 13). These features enable runtime integrity checking of firmware images and prevention of accidental register or memory corruption, fulfilling basic functional safety requirements for IEC 61508 SIL-1 applications.
How much data flash memory does R5F102A7DSP#30 provide, and what is its endurance?
The R5F102A7DSP#30 integrates 2 KB of data flash memory with a typical endurance of 1,000,000 write/erase cycles at VDD = 1.8–5.5 V, as specified in Section 1.1 Features. This memory operates with background operation (BGO), allowing program execution from code flash while rewriting data flash - essential for reliable parameter storage and field firmware updates.
What are the A/D converter specifications of R5F102A7DSP#30?
The R5F102A7DSP#30 includes an 8-channel, 10-bit A/D converter with internal 1.45 V reference voltage and integrated temperature sensor. Input voltage range is –0.3 V to VDD + 0.3 V (or AVREF(+) + 0.3 V), and it supports single-ended and differential measurements using AVREFP/AVREFM pins - meeting precision sensing needs in thermostats and portable medical devices.
Is R5F102A7DSP#30 pin-compatible with other RL78/G12 30-pin variants?
Yes, R5F102A7DSP#30 shares the identical 30-pin LSSOP package (PLSP0030JB-B) and pin configuration with all R5F102Ax and R5F103Ax variants, including R5F102A8DSP#30 and R5F103A7DSP#30. Pin functions are consistent across the family, though peripheral availability (e.g., data flash, DMA, CRC) differs - verified in Table 1-1 and Section 1.4.3 of the datasheet.
R5F102A7DSP#30 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 30-LSSOP (0.240", 6.10mm Width)
- Series:
- RL78/G12
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 24MHz
- Connectivity:
- CSI, I2C, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 23
- Program Memory Size:
- 4KB (4K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- 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:
R5F102A7DSP#30 FAQ
1.How can I place an order for R5F102A7DSP#30 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F102A7DSP#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 R5F102A7DSP#30 reliable?
The price and inventory of R5F102A7DSP#30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F102A7DSP#30 is usually 5 days.
3.What payment methods are accepted for R5F102A7DSP#30?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F102A7DSP#30 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F102A7DSP#30?
R5F102A7DSP#30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F102A7DSP#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 R5F102A7DSP#30?
For technical support, including R5F102A7DSP#30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F102A7DSP#30 requirements.
6.How does Aetrix verify that R5F102A7DSP#30 is sourced from the original manufacturer or authorized distributors?
All R5F102A7DSP#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 R5F102A7DSP#30 meets industry standards.
7.What is the process for return or replacement of R5F102A7DSP#30?
All R5F102A7DSP#30 units undergo pre-shipment inspection (PSI). If there is an issue with R5F102A7DSP#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 R5F102A7DSP#30 part is unused and in its original packaging.
Return procedure for R5F102A7DSP#30:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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