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Renesas R5F1037AANA#U5
- Part No.:
- R5F1037AANA#U5
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
R5F1037AANA#U5.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 24HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,154
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Product details
Overview
R5F1037AANA#U5 from Renesas Electronics is a 24-pin RL78/G12 16-bit microcontroller designed for ultra-low-power embedded control in consumer-grade applications (–40°C to +85°C). It features 4 KB code flash, 512 B RAM, 1.8–5.5 V operation, 24 MHz high-speed on-chip oscillator (±5% accuracy), and integrated 8-channel 10-bit A/D converter. It targets battery-powered sensor nodes and smart home peripherals requiring deterministic real-time response with minimal active current.
For engineers reviewing the R5F1037AANA#U5 datasheet, R5F1037AANA#U5 pinout, R5F1037AANA#U5 application, or R5F1037AANA#U5 equivalent, this page delivers verified technical context, validated pin functions, confirmed peripheral configurations, and precise alternative part comparisons - all grounded in Renesas' official R01DS0193EJ0250 Rev.2.50 specification.
Technical Context
The R5F1037AANA#U5 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting minimum instruction execution time of 0.04167 µs at 24 MHz. Its memory map spans 1 MB address space, with dedicated 4 KB code flash and no data flash - distinguishing it from R5F1027x variants.
It integrates one UART channel, one simplified SPI (CSI) channel, and zero simplified I²C channels - consistent with R5F103x-series peripheral reduction. Power management includes HALT, STOP, and SNOOZE modes, enabling 63 µA/MHz active current consumption under specified VDD conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC CPU with 3-stage pipeline; enables deterministic real-time interrupt latency and compact code density for resource-constrained firmware. |
| Code Flash / RAM | 4 KB on-chip flash (1 KB block size) + 512 B RAM; sufficient for small-footprint control firmware with self-programming support disabled per R5F103x family. |
| Operating Voltage | 1.8 V to 5.5 V single supply; supports direct interface with 1.8 V, 3.3 V, and 5 V logic domains without level shifters. |
| A/D Converter | 10-bit resolution, 8 input channels, internal 1.45 V reference; suitable for analog sensor interfacing (e.g., thermistors, potentiometers) without external reference. |
| Timer Resources | Four 16-bit timer channels + one 12-bit interval timer + one watchdog timer; provides flexible PWM generation, periodic interrupts, and system safety monitoring. |
| Serial Interfaces | One UART channel (RxD0/TxD0), one CSI channel (SCK00/SI00/SO00), zero simplified I²C channels; meets basic host-to-peripheral communication needs without bus arbitration overhead. |
| Package & Pins | HWQFN-24 (4 × 4 mm, 0.5 mm pitch) with 22 usable I/O pins; exposes thermal pad for improved power dissipation in compact PCB layouts. |
Pinout & Package
Package: HWQFN-24 (4 × 4 mm, 0.5 mm pitch), exposed die pad (recommended connection to VSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6 | P00–P03 / KR6–KR9 | Port 0 general-purpose I/O with key return function; supports N-ch open drain (VDD-tolerant) and pull-up configuration for matrix keypad scanning. |
| 7, 8, 9, 10, 11, 12 | P20–P23 / ANI0–ANI3 / AVREFP/AVREFM | Analog input group with dedicated reference voltage pins; enables ratiometric A/D measurements using internal 1.45 V reference or external AVREF. |
| 13, 14, 15, 16, 17, 18 | P40–P42 / ANI21–ANI22 / TI02–TI03 / TO02–TO03 / INTP1 | Mixed-signal I/O: two analog inputs + two timer input/output pins + one external interrupt; supports encoder quadrature decoding or pulse-width capture. |
| 19, 20, 21, 22 | P10–P14 / ANI16–ANI20 / SCK00–SO00 / RxD0/TxD0 / INTP2–INTP3 | Primary serial and timing interface: full UART + CSI clock/data lines + two external interrupts; forms core communication and event-handling path. |
| 23, 24 | P125 / RESET / P137 / INTP0 | Dedicated reset input (active-low, Schmitt-triggered) + primary external interrupt; ensures robust power-on initialization and wake-from-STOP capability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 63 μA/MHz active current at 24 MHz; extends battery life in intermittent-sensing applications such as wireless door/window sensors. |
| On-chip oscillator accuracy | ±5% over –40°C to +85°C; eliminates need for external crystal in cost-sensitive designs where timing tolerance >1% is acceptable. |
| Hardware timer flexibility | Four independent 16-bit timer channels with input capture, output compare, and PWM modes; supports motor control, LED dimming, and signal generation without software overhead. |
| Robust reset architecture | Integrated POR, LVD (12 selectable thresholds), and watchdog timer; prevents erratic behavior during brown-out or software hang conditions. |
| Low-voltage analog interface | 10-bit A/D converter operational down to 1.8 V supply with internal reference; enables direct sensing from low-power analog sensors without external regulators. |
Applications
| Smart Appliance Control | Wireless Sensor Node |
|---|---|
Use Scenario: Embedded controller in battery-powered smart thermostat managing temperature sensing, display backlight, and BLE radio coordination. IC Role / Device Role / Timing Role: Main system controller executing closed-loop HVAC logic, driving 7-segment display via PCLBUZ0, and synchronizing UART-based BLE module communication. Use Value: 4 KB flash accommodates dual-mode firmware (heating/cooling); 10-bit A/D achieves ±0.5°C measurement resolution; 63 μA/MHz extends 2-year battery life. |
Use Scenario: Sub-1 GHz RF sensor endpoint measuring ambient light, humidity, and motion in industrial asset tracking. IC Role / Device Role / Timing Role: Data acquisition hub sampling analog sensors via 8-channel A/D, formatting packets via UART, and entering STOP mode between transmissions. Use Value: Single 1.8–5.5 V supply powers both MCU and RF transceiver; SNOOZE mode enables fast wake-up for event-driven sampling; 22 GPIO support multi-sensor routing. |
| Consumer Remote Control | Industrial Panel Interface |
Use Scenario: IR remote with capacitive touch keys and status LED feedback for audio/video equipment. IC Role / Device Role / Timing Role: Key scan controller using KR0–KR9 inputs, IR carrier generation via PCLBUZ0, and LED drive via port pins with PWM dimming. Use Value: On-chip key interrupt reduces polling overhead; 24 MHz oscillator ensures precise 38 kHz IR carrier; N-ch open-drain outputs directly drive LEDs without external drivers. |
Use Scenario: Front-panel controller for programmable logic controller (PLC) handling pushbutton inputs, LED indicators, and RS-485 diagnostics. IC Role / Device Role / Timing Role: Isolated I/O manager translating 24 V button signals to 3.3 V logic, driving status LEDs, and communicating via UART to main CPU. Use Value: 1.8–5.5 V operation interfaces with diverse supply rails; 12-level LVD detects field power faults; 22 GPIO support 16-button + 4-LED layout with spare margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F1027AANA#U5 | Includes 2 KB data flash, DMA controller, CRC engine, and ±1% oscillator accuracy; adds 1 KB RAM (1.5 KB total). | Required for firmware-over-the-air updates or background data logging; preferred when higher oscillator stability is critical for UART baud rate accuracy. | Select R5F1027AANA#U5 if data flash persistence or tighter timing tolerance is mandatory; otherwise R5F1037AANA#U5 offers lower cost and identical footprint. |
| R5F1037ADNA#U5 | Identical electrical specs and peripherals but rated for industrial temperature range (–40°C to +85°C with D-grade qualification). | Suitable for factory automation or outdoor enclosures where extended thermal validation is required beyond consumer-grade A-spec. | Choose R5F1037ADNA#U5 only when operating environment exceeds standard consumer thermal limits; no design changes needed for migration. |
Compared with R5F1027AANA#U5, the R5F1037AANA#U5 reduces BOM cost by omitting data flash and DMA while maintaining identical package and core functionality; versus R5F1037ADNA#U5, it trades industrial qualification for lower unit price in climate-controlled consumer deployments.
Availability
R5F1037AANA#U5 is available at Aetrix Electronics and suitable for smart appliance control, wireless sensor node development, and consumer remote control applications requiring stable component supply across production lifecycles.
Supply support for R5F1037AANA#U5 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 consumer electronics and industrial HMI applications - emphasizing energy efficiency, integration, and ease of certification.
FAQ
What is the maximum operating frequency of the R5F1037AANA#U5?
The R5F1037AANA#U5 supports a maximum high-speed on-chip oscillator frequency of 24 MHz, delivering 31 DMIPS performance at that speed. This frequency is achievable across the full 1.8–5.5 V supply range and –40°C to +85°C ambient temperature, with ±5% accuracy specified for consumer-grade operation.
Does the R5F1037AANA#U5 include data flash memory?
No, the R5F1037AANA#U5 does not include data flash memory. As confirmed in Renesas' R01DS0193EJ0250 Rev.2.50 datasheet Section 1.3.1, R5F103x-series devices like the R5F1037AANA#U5 have no mounted data flash - unlike R5F102x variants which integrate 2 KB. Firmware must use code flash for non-volatile parameter storage.
What package type and pin count does the R5F1037AANA#U5 use?
The R5F1037AANA#U5 uses a 24-pin HWQFN package (4 × 4 mm, 0.5 mm pitch) with an exposed thermal pad. This matches the mechanical outline PWQN0024KE-A per Renesas' ordering information table, and supports 22 functional I/O pins including analog, timer, UART, and key return functions.
Can the R5F1037AANA#U5 operate from a 1.8 V supply?
Yes, the R5F1037AANA#U5 is fully specified to operate from 1.8 V to 5.5 V, enabling direct compatibility with low-voltage sensors and batteries. At 1.8 V, it supports up to 8 MHz operation in LS (low-speed) mode and maintains full functionality of its 10-bit A/D converter, timers, and UART with appropriate baud rate configuration.
How many serial communication interfaces does the R5F1037AANA#U5 support?
The R5F1037AANA#U5 supports one UART channel (RxD0/TxD0), one simplified SPI (CSI) channel (SCK00/SI00/SO00), and zero simplified I²C channels - consistent with R5F103x-series peripheral simplification. It does not include hardware I²C master/slave capability, requiring bit-banged implementation if needed.
R5F1037AANA#U5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 24-WFQFN Exposed Pad
- Series:
- RL78/G12
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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#U5 FAQ
1.How can I place an order for R5F1037AANA#U5 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F1037AANA#U5 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#U5 reliable?
The price and inventory of R5F1037AANA#U5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F1037AANA#U5 is usually 5 days.
3.What payment methods are accepted for R5F1037AANA#U5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F1037AANA#U5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F1037AANA#U5?
R5F1037AANA#U5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F1037AANA#U5 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#U5?
For technical support, including R5F1037AANA#U5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F1037AANA#U5 requirements.
6.How does Aetrix verify that R5F1037AANA#U5 is sourced from the original manufacturer or authorized distributors?
All R5F1037AANA#U5 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#U5 meets industry standards.
7.What is the process for return or replacement of R5F1037AANA#U5?
All R5F1037AANA#U5 units undergo pre-shipment inspection (PSI). If there is an issue with R5F1037AANA#U5, 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#U5 part is unused and in its original packaging.
Return procedure for R5F1037AANA#U5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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