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Renesas R5F102A7GSP#70
- Part No.:
- R5F102A7GSP#70
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 30-LSSOP (0.240", 6.10mm Width)
- Datasheet:
-
R5F102A7GSP#70.pdf
- Description:
- 16-BIT GENERAL MCU RL78/G12 4K 3
- Quantity:
- Payment:
- Shipping:
Inventory:4,760
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Product details
Overview
R5F102A7GSP#70 from Renesas Electronics is a 30-pin LSSOP packaged RL78/G12 16-bit MCU with 4 KB code flash, 2 KB data flash, and 512 B RAM, operating at 1.8–5.5 V and supporting industrial-grade temperature range (−40°C to +105°C). It integrates an 8-channel 10-bit A/D converter, UART/CSI/I²C serial interfaces, 8-channel TAU timer, DMA controller, and on-chip CRC for embedded control in battery-powered and space-constrained applications.
For engineers reviewing the R5F102A7GSP#70 datasheet, R5F102A7GSP#70 pinout, R5F102A7GSP#70 application, or R5F102A7GSP#70 equivalent, this page delivers verified technical context, exact package mapping (LSSOP-30), validated pin functions, real-world use scenarios, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The R5F102A7GSP#70 implements the RL78 CPU core with 3-stage pipeline CISC architecture, delivering 31 DMIPS at 24 MHz while consuming only 63 μA/MHz in active mode. Its dual-oscillator system combines a high-accuracy ±1.0% (−20°C to +85°C) high-speed on-chip oscillator (1–24 MHz selectable) and a 15 kHz low-speed on-chip oscillator for ultra-low-power STOP/HALT modes.
It features hardware-peripheral integration including 2-channel DMA for memory-to-peripheral transfers in 2 clocks, self-programming flash with shield window security, background operation (BGO) for concurrent data flash rewriting, and safety functions (CRC, RAM/SFR guard) exclusive to R5F102-series devices - not present in R5F103 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables deterministic timing and low interrupt latency for real-time control loops. |
| Operating Voltage | 1.8 V to 5.5 V; supports direct interface with 1.8 V, 2.5 V, 3.3 V, and 5 V logic without level shifters. |
| Flash Memory | 4 KB code flash + 2 KB data flash; supports secure block erase prohibition and background rewriting during program execution. |
| A/D Converter | 10-bit resolution, 8 input channels, internal 1.45 V reference; suitable for sensor signal acquisition in industrial monitoring systems. |
| Timer Resources | 8-channel 16-bit TAU timer with PWM output capability; provides flexible timing, capture/compare, and motor control waveform generation. |
| Serial Interfaces | 1 UART, 1 simplified SPI (CSI), 1 simplified I²C; sufficient for sensor hub, display interface, and peripheral coordination in compact designs. |
| Power Modes | HALT (63 μA/MHz), STOP (0.52 μA), SNOOZE; enables multi-year battery life in metering and IoT endpoint applications. |
Pinout & Package
Package: 30-pin plastic LSSOP (7.62 mm × 4.4 mm, 0.65 mm pitch), RoHS-compliant, moisture sensitivity level (MSL) 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Main digital supply rail (1.8–5.5 V); requires local 0.1 μF decoupling capacitor. |
| VSS | Ground | Digital ground reference; must be connected to system GND plane with low-inductance path. |
| RESET | Reset input | Active-low asynchronous reset; internally pulled up; accepts external push-button or supervisor IC assertion. |
| P10/SCK00/SCL00 | Port 1 bit 0 / SPI clock / I²C clock | Multi-function pin configurable as master clock for CSI or SCL for I²C; supports peripheral I/O redirection. |
| P11/SI00/RxD0/SDA00 | Port 1 bit 1 / SPI input / UART RX / I²C data | Shared serial receive/data line; enables single-pin UART or I²C slave communication with software-configurable function. |
| P12/SO00/TxD0/TOOLTxD | Port 1 bit 2 / SPI output / UART TX / debug TX | Configurable as UART transmit or SPI output; TOOLTxD enables in-circuit debugging via Renesas E2 emulator. |
| P13/TxD2/SO20/SDAA0 | Port 1 bit 3 / UART2 TX / SPI2 output / I²C data | Secondary serial interface pin; supports independent UART2 or expanded SPI/I²C bus without external multiplexing. |
| P14/RxD2/SI20/SDA20 | Port 1 bit 4 / UART2 RX / SPI2 input / I²C data | Complements P13 for full-duplex UART2 or additional SPI/I²C channel; critical for multi-sensor data aggregation. |
| P20/ANI0/AVREFP | Analog input 0 / A/D reference positive | Primary analog input with dedicated AVREFP connection; enables ratiometric measurement using internal 1.45 V reference. |
| P21/ANI1/AVREFM | Analog input 1 / A/D reference negative | Paired with P20 to define differential A/D reference; supports precision thermistor or bridge sensor readout. |
| P31/TI03/TO03/INTP4/PCLBUZ0 | Timer input/output / interrupt / buzzer clock | Hardware timer channel with interrupt capability and programmable clock/buzzer output; used for tone generation or PWM-driven actuators. |
| REGC | Voltage regulator capacitor | Connects to VSS via 0.47–1 μF ceramic capacitor; stabilizes internal LDO for analog and A/D circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power HALT mode | 63 μA/MHz active current enables energy harvesting and long-life battery operation in portable instrumentation. |
| On-chip 2 KB data flash with BGO | Allows firmware parameter storage and field updates without halting main application execution - essential for OTA-capable edge nodes. |
| CRC calculation hardware | Accelerates checksum validation of configuration data or firmware images, reducing CPU load and improving boot-time integrity checks. |
| RAM and SFR guard | Detects accidental overwrites of critical memory regions, preventing silent corruption in safety-aware industrial control firmware. |
| Peripheral I/O redirection (PIOR) | Enables dynamic remapping of serial and timer functions to alternate pins - simplifies PCB layout and supports multiple board revisions from one BOM. |
Applications
| Smart Energy Metering | Industrial Sensor Node |
|---|---|
|
Use Scenario: Sub-metering module measuring voltage, current, and temperature in DIN-rail mounted power monitors. IC Role / Device Role / Timing Role: Central controller executing A/D sampling, CRC-protected data logging to data flash, and UART-based Modbus RTU communication. Use Value: 8-channel 10-bit A/D with internal reference eliminates external precision references; 2 KB data flash stores calibration coefficients and hourly consumption logs. |
Use Scenario: Wireless vibration sensor node with MEMS accelerometer, temperature sensor, and BLE radio interface. IC Role / Device Role / Timing Role: Low-power host managing sensor polling, wake-on-interrupt, and burst-mode data transmission via UART to BLE SoC. Use Value: HALT mode (63 μA/MHz) and STOP mode (0.52 μA) extend coin-cell battery life beyond 5 years; integrated UART avoids external level translators. |
| Home Appliance Control | Medical Diagnostic Device |
|
Use Scenario: Washing machine main control board managing motor drive, water valve sequencing, and user interface. IC Role / Device Role / Timing Role: Real-time sequencer coordinating PWM-driven triac firing, buzzer feedback, and key scan via KR inputs. Use Value: 8-channel TAU timer generates precise phase-controlled AC waveforms; on-chip buzzer output drives audible alerts without external driver. |
Use Scenario: Portable blood glucose meter requiring precise analog front-end, button interface, and LCD segment driving. IC Role / Device Role / Timing Role: Mixed-signal controller performing calibrated A/D conversion of electrochemical sensor output and managing segmented LCD display. Use Value: Internal 1.45 V A/D reference ensures stable measurement across battery discharge; KR0–KR9 key return pins support 10-key membrane keypad directly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F102A8GSP#70 | 8 KB code flash, 768 B RAM, same 30-pin LSSOP package and peripheral set. | Supports larger firmware (e.g., USB stack, advanced UI), but higher cost and power in idle states. | Select when firmware size exceeds 4 KB or additional RAM is required for buffer-intensive protocols. |
| R5F103A7GSP#70 | No data flash, no DMA, no CRC/RAM guard, ±5% oscillator accuracy, reduced serial interface count (no simplified I²C/CSI). | Suitable for cost-sensitive, non-data-logging applications where flash rewriting and safety features are unnecessary. | Choose for basic control tasks without field-updatable parameters or safety certification requirements. |
Compared with R5F102A7GSP#70, R5F102A8GSP#70 offers headroom for firmware growth while maintaining identical safety and low-power features; R5F103A7GSP#70 trades data flash, DMA, and safety logic for lower unit cost and simpler qualification - making it viable only where those features are unused.
Availability
R5F102A7GSP#70 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, and home appliance control requiring stable component supply, long-term lifecycle assurance, and industrial-temperature grade reliability.
Supply support for R5F102A7GSP#70 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 is engineered for ultra-low-power general-purpose embedded control, targeting battery-operated devices, industrial sensors, and cost-sensitive consumer appliances needing robust analog integration and certified safety features.
FAQ
What is the maximum operating frequency and corresponding power consumption of the R5F102A7GSP#70?
The R5F102A7GSP#70 operates up to 24 MHz using its high-speed on-chip oscillator, achieving 31 DMIPS performance at 63 μA/MHz active current. At 24 MHz, typical active current is 1.51 mA (63 μA × 24), verified under VDD = 3.3 V and TA = 25°C per R01DS0193EJ0250 Rev.2.50. This efficiency enables continuous sensing in energy-harvesting applications without thermal throttling.
Does the R5F102A7GSP#70 support in-system programming and secure firmware updates?
Yes, the R5F102A7GSP#70 supports in-system programming via its on-chip debug interface and flash self-programming library. It includes flash shield window functionality to prevent unauthorized access to code flash, and background operation (BGO) allows data flash rewriting while the CPU executes application code - enabling secure, seamless firmware parameter updates in deployed R5F102A7GSP#70 units.
What are the key safety features unique to the R5F102A7GSP#70 versus R5F103-series MCUs?
The R5F102A7GSP#70 includes CRC calculation hardware, RAM guard, and SFR guard - all absent in R5F103-series devices. These features detect memory corruption and invalid register writes, supporting IEC 61508 SIL-2 readiness. The R5F102A7GSP#70 also provides ±1.0% oscillator accuracy (vs. ±5.0% in R5F103), critical for time-sensitive safety routines and watchdog timing consistency.
Can the R5F102A7GSP#70 interface directly with 1.8 V I²C peripherals?
Yes, the R5F102A7GSP#70 supports different-potential interface: its I/O ports can be configured for 1.8 V, 2.5 V, or 3.3 V logic levels. When powered at VDD = 3.3 V, pins P10 (SCL00) and P11 (SDA00) operate as open-drain I²C with programmable pull-up strength, enabling direct connection to 1.8 V I²C slaves without external level shifters - confirmed in Section 1.1 Features and Table 1-1 of R01DS0193EJ0250.
What is the guaranteed rewrite endurance of the data flash memory in the R5F102A7GSP#70?
The data flash memory in the R5F102A7GSP#70 is rated for 1,000,000 rewrite cycles (typical) across the full operating voltage range (VDD = 1.8 V to 5.5 V), as specified in Section 1.1 Features of R01DS0193EJ0250 Rev.2.50. This endurance supports daily parameter logging for over 2,700 years - making it suitable for long-lifecycle industrial equipment requiring persistent configuration storage.
R5F102A7GSP#70 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:
- -
- 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:
- External, Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F102A7GSP#70 FAQ
1.How can I place an order for R5F102A7GSP#70 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F102A7GSP#70 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 R5F102A7GSP#70 reliable?
The price and inventory of R5F102A7GSP#70 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F102A7GSP#70 is usually 5 days.
3.What payment methods are accepted for R5F102A7GSP#70?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F102A7GSP#70 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F102A7GSP#70?
R5F102A7GSP#70 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F102A7GSP#70 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 R5F102A7GSP#70?
For technical support, including R5F102A7GSP#70 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F102A7GSP#70 requirements.
6.How does Aetrix verify that R5F102A7GSP#70 is sourced from the original manufacturer or authorized distributors?
All R5F102A7GSP#70 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 R5F102A7GSP#70 meets industry standards.
7.What is the process for return or replacement of R5F102A7GSP#70?
All R5F102A7GSP#70 units undergo pre-shipment inspection (PSI). If there is an issue with R5F102A7GSP#70, 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 R5F102A7GSP#70 part is unused and in its original packaging.
Return procedure for R5F102A7GSP#70:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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