My Inquiry
My Account
Renesas R5F102AAASP#30
- Part No.:
- R5F102AAASP#30
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 30-LSSOP (0.240", 6.10mm Width)
- Datasheet:
-
R5F102AAASP#30.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 30LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:9,257
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
R5F102AAASP#30 from Renesas Electronics is a 30-pin LSSOP ultra-low-power 16-bit RL78/G12 microcontroller designed for embedded control in consumer-grade applications (–40°C to +85°C). It integrates 16 KB code flash, 2 KB data flash, 2 KB RAM, 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 compact, battery-conscious designs such as smart home sensors and portable industrial controllers.
For engineers reviewing the R5F102AAASP#30 datasheet, R5F102AAASP#30 pinout, R5F102AAASP#30 application, or R5F102AAASP#30 equivalent, key selection criteria include its 2 KB data flash with background operation (BGO), dual UART/CSI/I²C serial interfaces, 8-channel TAU timer with PWM capability, DMA controller (2 channels), and CRC hardware acceleration - all operating from a single 1.8–5.5 V supply.
Technical Context
The R5F102AAASP#30 implements the RL78 CPU core with a 3-stage CISC pipeline, supporting minimum instruction execution at 0.04167 µs (24 MHz on-chip oscillator) and full 1 MB address space. Its power architecture includes HALT, STOP, and SNOOZE modes, achieving 63 μA/MHz active current consumption.
It features a dedicated voltage regulator (REGC pin), on-chip power-on-reset (POR) and 12-level voltage detector (LVD), and supports peripheral I/O redirection via PIOR register - enabling flexible pin assignment for UART0/UART1/UART2, CSI00/CSI11/CSI20, and IICA0/IIC00/IIC11/IIC20 across its 26 I/O pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC CPU with 3-stage pipeline, 1 MB address space |
| Flash Memory | 16 KB code flash + 2 KB data flash with BGO and 1M rewrite cycles (TYP) |
| RAM | 2 KB on-chip RAM, supporting DMA transfers between SFR and memory in 2 clocks |
| Operating Voltage | 1.8 V to 5.5 V single supply - enables direct interface with 1.8/2.5/3.3 V peripherals |
| ADC | 10-bit resolution, 8 input channels, internal 1.45 V reference and temperature sensor |
| Timers | 8-channel 16-bit TAU (with PWM), 12-bit interval timer, window watchdog timer |
| Serial Interfaces | 3 UART channels, 3 CSI (SPI-like) channels, 3 I²C-compatible channels (IICA0/IIC00/IIC11/IIC20) |
Pinout & Package
Package: 30-pin plastic LSSOP (7.62 mm, 0.65-mm pitch), RoHS-compliant, surface-mountable with exposed die pad not present (unlike HWQFN variants).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power Supply | Main 1.8–5.5 V supply rail; powers core, flash, and I/O |
| VSS | Ground | Digital ground reference; must be connected to REGC capacitor return |
| REGC | Regulator Capacitance | Connect 0.47–1 µF capacitor to VSS to stabilize internal voltage regulator |
| RESET | Reset Input | Active-low reset pin; supports external reset and internal POR/LVD/wdog triggers |
| P10–P17 | Port 1 I/O | Configurable CMOS I/O (N-ch open-drain capable); supports UART0/CSI00/IIC00 functions |
| P30, P31 | Port 3 I/O | Support CSI11/SCL11/SDA11 and INTP3/INTP4 - enables secondary I²C/SPI bus |
| P50, P51 | Port 5 I/O | Support SI11/SO11/SDA11 and INTP1/INTP2 - extends interrupt-capable serial interface |
| X1, X2 | Crystal Oscillator | Connect external crystal (1–20 MHz) for main system clock; optional EXCLK input on X2 |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low-Power Operation | 63 μA/MHz active current; HALT/STOP/SNOOZE modes reduce system-level power in sensor nodes |
| Data Flash with BGO | 2 KB data flash allows firmware parameter updates during runtime without halting program execution |
| Hardware CRC Acceleration | Dedicated CRC module offloads checksum computation from CPU - critical for secure OTA updates |
| Peripheral I/O Redirection | PIOR register enables dynamic remapping of UART/CSI/I²C functions to alternate pins - simplifies PCB layout reuse |
| Robust Reset & Monitoring | On-chip POR, 12-level LVD (1.88–4.06 V), illegal-instruction and RAM parity reset sources ensure field reliability |
Applications
| Smart Home Sensor Hub | Industrial Panel Controller |
|---|---|
Use Scenario: Compact battery-powered environmental monitor aggregating temperature, humidity, and motion data via analog and digital sensors. IC Role / Device Role / Timing Role: Central MCU executing sensor fusion, local decision logic, and low-power wireless transmission scheduling. Use Value: 2 KB data flash stores calibration coefficients and event logs; 8-channel ADC reads multiple analog sensors; UART/CSI support connects to BLE/Wi-Fi modules. |
Use Scenario: Front-panel HMI for HVAC or PLC systems requiring button scanning, display driving, and serial communication with host controllers. IC Role / Device Role / Timing Role: Dedicated UI controller managing key interrupts, buzzer feedback, and real-time serial protocol translation (Modbus RTU over UART). Use Value: Key return (KR) inputs directly scan up to 10 buttons; programmable clock/buzzer outputs drive audible alerts; 26 GPIO support LED indicators and display interfaces. |
| Portable Medical Device | Energy Metering Subsystem |
Use Scenario: Handheld diagnostic tool measuring biopotentials (ECG/EMG) with analog front-end and USB/Bluetooth connectivity. IC Role / Device Role / Timing Role: Signal acquisition MCU performing analog-to-digital conversion, digital filtering, and packetized data streaming. Use Value: 10-bit ADC with internal reference ensures stable measurement accuracy; DMA transfers sensor data to RAM without CPU load; 24 MHz clock enables real-time FIR filtering. |
Use Scenario: Secondary metering unit in smart electricity meters monitoring auxiliary parameters (voltage sag, harmonic distortion) alongside primary ASIC. IC Role / Device Role / Timing Role: Co-processor handling non-critical metering tasks, tamper detection, and local display refresh. Use Value: CRC engine validates firmware integrity after OTA updates; SNOOZE mode extends battery life during idle periods; UART2 communicates with metrology IC via isolated RS-485. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F102A9ASP#30 | Same package and pinout; 12 KB code flash, 2 KB data flash, 768 B RAM | Suitable where reduced code size suffices and lower RAM usage is acceptable | Select when firmware footprint < 12 KB and cost optimization is prioritized over future scalability |
| R5F103AAASP#30 | No data flash; no DMA; no CRC; ±5.0% oscillator accuracy; only 1 UART/CSI/I²C channel | Targeted at simpler, cost-sensitive control tasks without runtime parameter storage or safety-critical checksums | Choose only if data flash, DMA, and hardware CRC are unnecessary - not a drop-in replacement |
Compared with R5F102A9ASP#30, the R5F102AAASP#30 provides 4 KB more code flash and 1.25 KB more RAM for complex firmware and buffering; versus R5F103AAASP#30, it adds essential reliability features (data flash BGO, CRC, DMA) required for certified industrial firmware updates and deterministic real-time response.
Availability
R5F102AAASP#30 is available at Aetrix Electronics and suitable for smart home sensor hubs, industrial panel controllers, portable medical devices, and energy metering subsystems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for R5F102AAASP#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 true low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and safety-aware embedded control applications - balancing performance, integration, and energy efficiency.
FAQ
What is the maximum operating frequency and accuracy of the on-chip oscillator in R5F102AAASP#30?
The R5F102AAASP#30 features a high-speed on-chip oscillator configurable up to 24 MHz with ±1.0% accuracy over –20°C to +85°C ambient temperature. This specification applies specifically to R5F102-series devices; R5F103 variants offer only ±5.0% accuracy. The oscillator supports selectable frequencies (1/2/3/4/6/8/12/16/24 MHz) and enables immediate code execution post-reset without external crystal startup delay.
Does R5F102AAASP#30 support background data flash rewriting while executing application code?
Yes, the R5F102AAASP#30 supports Background Operation (BGO) for its 2 KB data flash memory. This allows the CPU to execute instructions from program memory while simultaneously erasing or programming data flash sectors - essential for logging, configuration updates, or firmware patching without system interruption. BGO is confirmed in the RL78/G12 datasheet Section 1.1 Features and Section 1.3.1 Data Flash.
How many UART, CSI, and I²C interfaces does R5F102AAASP#30 provide, and are they multiplexed?
The R5F102AAASP#30 provides three UART channels (UART0/UART1/UART2), three CSI (SPI-like) channels (CSI00/CSI11/CSI20), and four I²C-compatible channels (IICA0/IIC00/IIC11/IIC20). These interfaces are functionally distinct and mapped to different pin groups (e.g., P10–P12 for UART0/CSI00/IIC00; P30–P51 for CSI11/IIC11). Peripheral I/O redirection (PIOR) allows limited remapping but does not enable concurrent use of all channels on identical pins.
What is the purpose of the REGC pin on R5F102AAASP#30, and how must it be connected?
The REGC pin on R5F102AAASP#30 is the regulator capacitance terminal for the internal voltage regulator. It must be connected to VSS via a 0.47 µF to 1 µF ceramic capacitor - as explicitly required in the datasheet (Page 9, Caution). Failure to connect this capacitor results in unstable internal regulation, potentially causing erratic reset behavior, flash write failures, or ADC inaccuracies. No voltage or signal should be applied directly to REGC.
Is R5F102AAASP#30 pin-compatible with other RL78/G12 30-pin variants like R5F103AAASP#30?
No, R5F102AAASP#30 is not pin-compatible with R5F103AAASP#30 despite sharing the same 30-pin LSSOP package. Key functional differences - including absence of data flash, DMA, CRC, and reduced serial interface count in the R5F103 series - result in divergent peripheral pin assignments. For example, P30/P31 on R5F102AAASP#30 support CSI11/SCL11/SDA11, but those functions are unimplemented on R5F103AAASP#30. Always verify pin function tables per device variant.
R5F102AAASP#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:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 23
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 2K 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:
R5F102AAASP#30 FAQ
1.How can I place an order for R5F102AAASP#30 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F102AAASP#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 R5F102AAASP#30 reliable?
The price and inventory of R5F102AAASP#30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F102AAASP#30 is usually 5 days.
3.What payment methods are accepted for R5F102AAASP#30?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F102AAASP#30 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F102AAASP#30?
R5F102AAASP#30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F102AAASP#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 R5F102AAASP#30?
For technical support, including R5F102AAASP#30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F102AAASP#30 requirements.
6.How does Aetrix verify that R5F102AAASP#30 is sourced from the original manufacturer or authorized distributors?
All R5F102AAASP#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 R5F102AAASP#30 meets industry standards.
7.What is the process for return or replacement of R5F102AAASP#30?
All R5F102AAASP#30 units undergo pre-shipment inspection (PSI). If there is an issue with R5F102AAASP#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 R5F102AAASP#30 part is unused and in its original packaging.
Return procedure for R5F102AAASP#30:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F102AAASP#30 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
