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Renesas R5F1037AANA#45
- Part No.:
- R5F1037AANA#45
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
R5F1037AANA#45.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 24HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,485
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Product details
Overview
R5F1037AANA#45 from Renesas Electronics is a 24-pin HWQFN-packaged RL78/G12 16-bit microcontroller designed for ultra-low-power general-purpose embedded control. It operates from 1.8 V to 5.5 V, delivers 31 DMIPS at 24 MHz, integrates 4 KB code flash and 256 B RAM, and supports consumer-grade operation from −40°C to +85°C - ideal for battery-powered sensor nodes and smart home peripherals.
For engineers reviewing the R5F1037AANA#45 datasheet, R5F1037AANA#45 pinout, R5F1037AANA#45 application, or R5F1037AANA#45 equivalent, this page provides verified functional scope, validated peripheral configuration (1-channel UART, 1-channel CSI, no data flash), confirmed 24-pin HWQFN package mapping, and real-world selection guidance against comparable RL78/G12 variants.
Technical Context
The R5F1037AANA#45 implements the RL78 CPU core with 3-stage pipeline CISC architecture, 1 MB address space, and selectable instruction execution time (0.04167 µs at 24 MHz). Its clock system combines a high-speed on-chip oscillator (1–24 MHz, ±5% accuracy over −40°C to +85°C) and low-speed 15 kHz on-chip oscillator, enabling HALT/STOP/SNOOZE power modes.
Peripheral integration includes a 10-bit 8-channel A/D converter (VDD-referenced), 4-channel 16-bit timer (TAU0), watchdog timer, interval timer, and key interrupt support. Unlike R5F1027x variants, it omits DMA, CRC, RAM/SFR guard, and data flash memory - confirming its role as a cost-optimized, low-complexity control MCU for deterministic real-time tasks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline, 1 MB address space |
| Max Operating Frequency | 24 MHz (31 DMIPS), supported by high-speed on-chip oscillator |
| Memory Configuration | 4 KB code flash (1 KB block size), 256 B RAM - no data flash memory |
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct interface with 1.8/2.5/3.3 V logic and battery operation |
| Operating Temperature | −40°C to +85°C (consumer-grade A-specification) |
| Analog Peripherals | 10-bit 8-channel A/D converter with internal reference, AVREFP/AVREFM inputs |
| Serial Interfaces | 1 UART channel, 1 simplified SPI (CSI) channel, 0 simplified I²C channels |
Pinout & Package
Package: 24-pin plastic HWQFN (4 × 4 mm, 0.5 mm pitch), exposed die pad (to be connected to VSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00–P03 | Port 0 I/O | N-ch open-drain capable (24-pin only); used for key return (KR6–KR9) or general I/O |
| P10–P14 | Port 1 I/O | Primary serial interface pins: SCK00/SI00/SO00 (CSI00), RxD0/TxD0 (UART0), INTP2/INTP3 |
| P20–P23 | Port 2 analog/digital I/O | ANI0–ANI3 inputs with AVREFP/AVREFM; low-drive capability (±0.5 mA per pin) |
| P40–P42 | Port 4 I/O | ANI21/ANI22 (A/D), TI02/TI03/TO02/TO03 (timer I/O), INTP1 |
| P60/P61 | I²C interface | SCLA0/SDAA0 - N-ch open-drain I/O with 6 V tolerance, usable as I²C bus lines |
| P121/P122 | Crystal oscillator | X1/X2 inputs for external crystal (1–20 MHz) or EXCLK input for external clock |
| P125 | Reset & debug | Active-low RESET input with on-chip pull-up; also supports on-chip debug communication |
| VDD/VSS | Power supply | Single 1.8–5.5 V supply; VSS connects to exposed die pad for thermal/EMI performance |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 63 μA/MHz active current enables multi-year battery life in intermittent-sensing applications |
| Flexible clocking | High-speed on-chip oscillator (1–24 MHz, ±5%) eliminates need for external crystal in cost-sensitive designs |
| Deterministic real-time control | 4-channel 16-bit timer (TAU0) with PWM-capable outputs supports motor control and LED dimming |
| Robust analog sensing | 8-channel 10-bit A/D with internal reference and temperature sensor enables self-calibrating sensor interfaces |
| Secure boot & debug | On-chip debug function supports development; flash security prohibits unauthorized block erase/reprogram |
Applications
| Smart Thermostat Interface | Wireless Sensor Node MCU |
|---|---|
Use Scenario: Local temperature/humidity sensing with BLE/Wi-Fi gateway communication and display control. IC Role / Device Role / Timing Role: Primary system controller managing ADC sampling, UART-based wireless module interface, and buzzer/clock output for UI feedback. Use Value: Integrated 10-bit ADC and UART eliminate external signal conditioning ICs; 63 μA/MHz operation extends coin-cell battery life beyond 2 years in sleep-dominated duty cycles. |
Use Scenario: Battery-powered environmental monitor transmitting data every 5 minutes via LoRa or NB-IoT. IC Role / Device Role / Timing Role: Low-power host MCU executing sensor readout, data preprocessing, and serial command framing for modem IC. Use Value: STOP mode current <1 μA and fast wake-up (<4 μs) minimize energy per transmission; single-supply 1.8–5.5 V operation simplifies power design across diverse battery chemistries. |
| Home Appliance Control Board | Industrial Panel Indicator |
Use Scenario: Washing machine main control board handling motor drive signals, water level sensing, and user button/keypad scanning. IC Role / Device Role / Timing Role: Real-time peripheral coordinator interfacing with triac drivers, pressure sensors (via ADC), and key return matrix (KR0–KR9). Use Value: Dedicated key interrupt and 4-channel TAU0 timer enable precise timing for motor commutation and debounce-free keypad response without CPU overhead. |
Use Scenario: DIN-rail mounted HMI indicator with LED status lights, push-button inputs, and RS-485 communication to PLC. IC Role / Device Role / Timing Role: Standalone status controller using GPIO-driven LEDs, UART-to-RS485 transceiver interface, and watchdog supervision. Use Value: 24-pin HWQFN footprint offers compact layout; ±5% oscillator accuracy meets industrial UART timing budgets without external crystal cost or board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F1027AANA#45 | Includes 2 KB data flash, DMA, CRC, RAM/SFR guard; ±1% oscillator accuracy | Required for firmware-over-the-air updates or safety-critical checksum validation | Select when field-upgradable code storage or enhanced functional safety features are mandatory |
| R5F1037ADNA#45 | Identical core/peripherals but rated for −40°C to +85°C industrial use (D-spec) | Needed for extended temperature stability in factory automation or outdoor enclosures | Choose for industrial environments where guaranteed operation at full spec range is required |
Compared with R5F1027AANA#45, the R5F1037AANA#45 reduces BOM cost by omitting data flash and safety peripherals while maintaining identical pinout and core performance; versus R5F1037ADNA#45, it trades industrial temp grade for lower unit price in consumer-grade deployments.
Availability
R5F1037AANA#45 is available at Aetrix Electronics and suitable for smart home controllers, battery-powered sensors, appliance control boards, and industrial panel indicators requiring stable component supply across production lifecycles.
Supply support for R5F1037AANA#45 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 delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets.
The RL78/G12 product line targets cost-sensitive, ultra-low-power general-purpose microcontroller applications - emphasizing energy efficiency, integrated analog peripherals, and streamlined development for mass-market embedded systems.
FAQ
What is the maximum operating frequency and associated DMIPS rating for the R5F1037AANA#45?
The R5F1037AANA#45 achieves a maximum operating frequency of 24 MHz using its high-speed on-chip oscillator, delivering 31 DMIPS of processing performance. This rating is measured under standard conditions (VDD = 2.7–5.5 V, TA = −40°C to +85°C) and reflects the RL78 CPU core's optimized 3-stage pipeline execution efficiency.
Does the R5F1037AANA#45 include data flash memory, and how does that compare to the R5F1027x series?
No, the R5F1037AANA#45 does not include data flash memory - a deliberate differentiation from the R5F1027x series, which integrates 2 KB of data flash. This omission reduces cost and simplifies firmware architecture for applications that do not require nonvolatile parameter storage or field firmware updates.
What serial communication interfaces are supported on the R5F1037AANA#45, and are they pin-compatible with other RL78/G12 variants?
The R5F1037AANA#45 supports one UART channel and one simplified SPI (CSI) channel, with zero simplified I²C channels. Its 24-pin HWQFN pinout matches R5F1027x devices, but functions like CSI01 and I²C01 are unimplemented - meaning software must avoid referencing those peripherals, though PCB layout remains compatible.
What is the oscillator accuracy specification for the R5F1037AANA#45, and how does it impact UART communication?
The R5F1037AANA#45 high-speed on-chip oscillator has ±5.0% accuracy over −40°C to +85°C. At 24 MHz, this yields a worst-case UART baud rate error of ~±2.5%, remaining within the ±3% tolerance of standard 16× oversampling UART receivers - making external crystals unnecessary for most 9600–115200 bps links.
How much RAM and code flash memory does the R5F1037AANA#45 provide, and what are their practical implications?
The R5F1037AANA#45 integrates 4 KB of code flash memory (organized in 1 KB blocks) and 256 B of RAM. This configuration supports compact firmware images for sensor polling, basic UI logic, or simple protocol stacks, while the small RAM size necessitates careful stack/heap allocation - typical for deeply embedded control tasks without dynamic memory requirements.
R5F1037AANA#45 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 24-WFQFN Exposed Pad
- 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:
- LVD, POR, PWM, WDT
- Number of I/O:
- 18
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1.5K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 11x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F1037AANA#45 FAQ
1.How can I place an order for R5F1037AANA#45 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F1037AANA#45 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 R5F1037AANA#45 reliable?
The price and inventory of R5F1037AANA#45 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F1037AANA#45 is usually 5 days.
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R5F1037AANA#45 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F1037AANA#45 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 R5F1037AANA#45?
For technical support, including R5F1037AANA#45 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F1037AANA#45 requirements.
6.How does Aetrix verify that R5F1037AANA#45 is sourced from the original manufacturer or authorized distributors?
All R5F1037AANA#45 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 R5F1037AANA#45 meets industry standards.
7.What is the process for return or replacement of R5F1037AANA#45?
All R5F1037AANA#45 units undergo pre-shipment inspection (PSI). If there is an issue with R5F1037AANA#45, 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 R5F1037AANA#45 part is unused and in its original packaging.
Return procedure for R5F1037AANA#45:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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