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Renesas R5F102A9ASP#50
- Part No.:
- R5F102A9ASP#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 30-LSSOP (0.240", 6.10mm Width)
- Datasheet:
-
R5F102A9ASP#50.pdf
- Description:
- IC MCU 16BIT 12KB FLASH 30LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,591
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Product details
Overview
R5F102A9ASP#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 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 sensor interface and battery-powered IoT endpoint designs.
For engineers reviewing the R5F102A9ASP#50 datasheet, R5F102A9ASP#50 pinout, R5F102A9ASP#50 application, or R5F102A9ASP#50 equivalent, key selection criteria include its 2 KB data flash with background operation (BGO), dual-channel DMA, CRC hardware accelerator, and support for UART/CSI/I²C serial interfaces - all within a true low-power platform consuming just 63 μA/MHz.
Technical Context
The R5F102A9ASP#50 implements the RL78 CPU core with a 3-stage pipeline CISC architecture, 1 MB address space, and selectable instruction execution time (0.04167 μs at 24 MHz). Its power management includes HALT, STOP, and SNOOZE modes, plus an on-chip voltage detector with 12-level interrupt/reset selection.
Peripherals are organized around TAU0 (8-channel 16-bit timer), SAU0 (4-channel serial array unit supporting UART/CSI/I²C), and dedicated hardware blocks for buzzer/clock output, key interrupt (10 inputs), and BCD correction - all accessible via configurable peripheral I/O redirection (PIOR) register mapping.
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 | 16 KB code flash (1 KB block size), 2 KB data flash (1M rewrite cycles, BGO supported), 2 KB RAM - supports firmware updates and data logging without halting execution. |
| Operating Voltage | 1.8 V to 5.5 V single supply - allows direct interfacing with 1.8 V, 2.5 V, 3.3 V, and 5 V peripherals without level shifters. |
| Power Consumption | 63 μA/MHz active current - reduces battery drain in portable devices; HALT/STOP/SNOOZE modes further lower system energy use. |
| A/D Converter | 10-bit resolution, 8 input channels, internal 1.45 V reference - suitable for precision analog sensing in temperature, light, and pressure monitoring. |
| Serial Interfaces | 1 UART, 1 simplified SPI (CSI), 1 simplified I²C - provides flexible communication with sensors, displays, and host controllers using minimal pins. |
| Timer System | 8-channel 16-bit TAU, 12-bit interval timer, window watchdog - delivers PWM generation, timing-critical event capture, and system safety monitoring. |
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 reference voltage plus / A/D input channel 0 | Provides stable +Vref for A/D conversion; also serves as primary analog input with rail-to-rail capability. |
| P21/ANI1/AVREFM | Analog reference voltage minus / A/D input channel 1 | Completes differential reference pair; enables ratiometric measurements and noise rejection. |
| P10/SCK00/SCL00 | Serial clock output/input for CSI/I²C | Shared pin for master clock generation in both simplified SPI and I²C modes - reduces pin count without sacrificing interface flexibility. |
| P11/SI00/RxD0/SDA00 | Serial data input / UART receive / I²C data | Tri-function input pin supporting daisy-chain SPI, asynchronous UART, or bidirectional I²C data - configured via PIOR register. |
| P12/SO00/TxD0/TOOLTxD | Serial data output / UART transmit / debug TX | Enables full-duplex UART communication and on-chip debug output using same physical pin - simplifies development and production test access. |
| REGC | Voltage regulator capacitor terminal | Must be connected to VSS via 0.47–1 µF capacitor; stabilizes internal LDO output for analog and digital domains. |
| RESET | Active-low reset input | Accepts external reset signal or internal POR/LVD/WDT assertion; supports reliable cold-start and fault recovery. |
Key Features
| Feature | Design Value |
|---|---|
| True low-power platform | 63 μA/MHz active current + multiple low-power modes (HALT/STOP/SNOOZE) - extends battery life in always-on edge nodes. |
| On-chip data flash with BGO | 2 KB data flash supports background rewriting while executing code from main flash - enables seamless firmware parameter updates. |
| Hardware CRC accelerator | Dedicated CRC module accelerates checksum calculation for communication packets and memory integrity checks - offloads CPU and ensures deterministic latency. |
| Peripheral I/O redirection (PIOR) | Configurable pin function mapping via register - allows dynamic assignment of UART/CSI/I²C signals to alternate pins, improving PCB layout flexibility. |
| 10-bit A/D with internal reference | Integrated 1.45 V reference eliminates need for external precision reference IC - reduces BOM cost and board area in sensor front-ends. |
Applications
| Home Appliance Control | Industrial Sensor Node |
|---|---|
|
Use Scenario: Microcontroller in smart thermostat managing temperature/humidity sensing, display update, and HVAC relay control. IC Role / Device Role / Timing Role: Main system controller executing closed-loop PID algorithms, driving 7-segment display via PCLBUZ outputs, and polling A/D channels every 100 ms. Use Value: 2 KB data flash stores calibration offsets and user preferences; 63 μA/MHz operation enables coin-cell backup during AC power loss. |
Use Scenario: Battery-powered vibration monitor mounted on motor housing, sampling accelerometer data and transmitting alerts via UART to gateway. IC Role / Device Role / Timing Role: Low-power data acquisition engine using SNOOZE mode between 1-second A/D bursts, then waking to process and transmit results. Use Value: Hardware CRC validates sensor frames before transmission; 8-channel A/D supports multi-axis analog inputs without external MUX. |
| Consumer Wearable | Smart Lighting Controller |
|
Use Scenario: Fitness tracker measuring heart rate via photoplethysmography (PPG), storing session logs, and syncing via UART to smartphone. IC Role / Device Role / Timing Role: Signal processor capturing analog PPG waveforms at 1 kHz, applying digital filtering, and buffering data in RAM before flash write. Use Value: 2 KB data flash retains 7 days of activity history; 1.8 V minimum operating voltage enables direct Li-ion battery integration (no boost converter). |
Use Scenario: LED driver board regulating color-mixed white light output using PWM dimming and ambient light feedback. IC Role / Device Role / Timing Role: Timing-critical PWM generator controlling RGB LED channels via TAU0 outputs, while reading ambient light sensor via A/D channel ANI16. Use Value: 8-channel 10-bit A/D resolves lux levels across 4-decade range; programmable clock/buzzer outputs drive status indicators without external timers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F102AAASP#50 | Same package and pinout; 16 KB code flash, 2 KB data flash, 2 KB RAM - identical memory configuration but higher-cost variant with extended temperature grade (–40°C to +105°C). | Required for industrial environments exceeding +85°C ambient; not needed for consumer-grade indoor use. | Select R5F102AAASP#50 only if operating temperature exceeds +85°C; otherwise R5F102A9ASP#50 offers identical functionality at lower cost. |
| R5F103A9ASP#50 | No data flash (0 KB), no DMA, no CRC, reduced serial interface count (UART only), ±5.0% oscillator accuracy - lower feature set and cost. | Suitable for simple control tasks without data logging or high-integrity communication; lacks BGO and hardware acceleration. | Choose R5F103A9ASP#50 when data flash, DMA, or CRC are unnecessary; R5F102A9ASP#50 is required for field-updatable firmware or safety-critical checksums. |
Compared with R5F102AAASP#50, R5F102A9ASP#50 reduces cost by omitting industrial-temperature qualification while retaining full functionality for consumer applications; versus R5F103A9ASP#50, it adds essential data storage, DMA efficiency, and hardware CRC - making it indispensable for robust, upgradable embedded systems.
Availability
R5F102A9ASP#50 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor nodes, consumer wearables, smart lighting controllers, and battery-powered IoT endpoints requiring stable component supply across long production lifecycles.
Supply support for R5F102A9ASP#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, 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 cost-sensitive, battery-operated, and space-constrained applications where energy efficiency, integrated peripherals, and rapid development are critical.
FAQ
What is the maximum operating frequency of the R5F102A9ASP#50?
The R5F102A9ASP#50 supports a maximum system clock frequency of 24 MHz using its high-speed on-chip oscillator. This is confirmed in the datasheet's "High-speed on-chip oscillator" section, which specifies 24 MHz as the top selectable frequency with ±1.0% accuracy over –20°C to +85°C. External crystal operation is limited to 20 MHz per electrical specifications.
Does the R5F102A9ASP#50 include data flash memory?
Yes, the R5F102A9ASP#50 includes 2 KB of on-chip data flash memory, as explicitly stated in Section 1.3.1 of the datasheet. This memory supports background operation (BGO), allowing program execution from code flash while simultaneously rewriting data flash - a key capability for firmware parameter storage and field updates.
What package type does the R5F102A9ASP#50 use?
The R5F102A9ASP#50 uses a 30-pin plastic LSSOP package (7.62 mm body width, 0.65-mm lead pitch), identified by the "SP" suffix in the part number and confirmed in Table 1-1 of the datasheet. It is RoHS-compliant and designed for surface-mount reflow assembly.
How many A/D converter channels does the R5F102A9ASP#50 support?
The R5F102A9ASP#50 supports 8 analog input channels (ANI0–ANI3, ANI16–ANI19), as specified in Section 1.7 "Outline of Functions" for 30-pin R5F102Ax devices. This is fewer than the 11 channels available on 20-/24-pin variants but sufficient for most compact sensor interface applications.
Is the R5F102A9ASP#50 pin-compatible with other RL78/G12 30-pin variants?
Yes, the R5F102A9ASP#50 shares identical pinout and package with other 30-pin LSSOP RL78/G12 devices including R5F102AAASP#50 and R5F103A9ASP#50, as shown in Figure 1-4 "30-pin products" and Table 1-1. However, functional differences exist - e.g., R5F103A9ASP#50 lacks data flash and DMA - so firmware and peripheral initialization must be verified per device.
R5F102A9ASP#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:
- 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:
- 12KB (12K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 1K 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:
R5F102A9ASP#50 FAQ
1.How can I place an order for R5F102A9ASP#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F102A9ASP#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 R5F102A9ASP#50 reliable?
The price and inventory of R5F102A9ASP#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F102A9ASP#50 is usually 5 days.
3.What payment methods are accepted for R5F102A9ASP#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F102A9ASP#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F102A9ASP#50?
R5F102A9ASP#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F102A9ASP#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 R5F102A9ASP#50?
For technical support, including R5F102A9ASP#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F102A9ASP#50 requirements.
6.How does Aetrix verify that R5F102A9ASP#50 is sourced from the original manufacturer or authorized distributors?
All R5F102A9ASP#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 R5F102A9ASP#50 meets industry standards.
7.What is the process for return or replacement of R5F102A9ASP#50?
All R5F102A9ASP#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F102A9ASP#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 R5F102A9ASP#50 part is unused and in its original packaging.
Return procedure for R5F102A9ASP#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F102A9ASP#50 Tags
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ATTINY4-TSHR
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