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Renesas R5F2L3AACNFP#31
- Part No.:
- R5F2L3AACNFP#31
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
R5F2L3AACNFP#31.pdf
- Description:
- IC MCU 16BIT FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,642
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Product details
Overview
R5F2L3AACNFP#31 from Renesas is a 16-bit R8C/L3AC Group microcontroller featuring the R8C CPU core, 96 KB flash program memory, 10 KB RAM, and integrated LCD drive control supporting up to 8 common and 56 segment outputs. It delivers 50 ns minimum instruction execution at 20 MHz, includes a 16×16-bit hardware multiplier, and supports real-time clock (Timer RE), LIN bus (via UART0 + Timer RA), and 20-channel 10-bit A/D conversion - deployed in appliance control panels with segmented LCD displays.
For engineers reviewing the R5F2L3AACNFP#31 datasheet, R5F2L3AACNFP#31 pinout, R5F2L3AACNFP#31 application, or R5F2L3AACNFP#31 equivalent, key selection criteria include its 100-pin LQFP package, -20°C to +85°C operating range (N version), background operation (BGO) data flash, and high-current I/O capability (16 pins).
Technical Context
The R5F2L3AACNFP#31 implements the R8C CPU core with 89 fundamental instructions and a 1 Mbyte address space, enabling high-efficiency code execution. Its system clock generation includes four independent circuits: XIN (up to 20 MHz), XCIN (32 kHz), high-speed on-chip oscillator (frequency-adjustable), and low-speed on-chip oscillator - all supporting selectable division ratios (1/2/4/8/16) and low-power modes (wait, stop, power-off).
Peripheral integration centers on mixed-signal timing and human interface functions: Timer RD provides three-phase PWM with complementary output for motor control; Timer RG enables phase-counting for encoder interfaces; and the LCD controller integrates voltage multiplier and dedicated regulator for bias generation - all coordinated via a single-channel Data Transfer Controller (DTC) with 38 activation sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions, 1 Mbyte address space, and 16×16→32-bit hardware multiplier |
| Memory | 96 KB flash program ROM, 1 KB × 4 data flash with BGO, 10 KB RAM |
| Operating Voltage | 1.8–5.5 V; supports 20 MHz @ 2.7–5.5 V or 5 MHz @ 1.8–5.5 V |
| A/D Converter | 10-bit resolution × 20 channels with sample-and-hold and sweep mode |
| LCD Drive | Up to 8 COM / 56 SEG outputs; integrated voltage multiplier and regulator; 1/2, 1/3, 1/4 bias support |
| I/O Ports | 88 programmable CMOS I/O pins with selectable pull-up; 16 high-current drive ports |
| Timers | Timer RA/RB (8-bit), RC/RD/RG (16-bit), RE (8-bit RTC); RD supports reset-sync & complementary PWM |
| Serial Interfaces | UART0/1/2 (I²C-capable), SSU (shared with I²C), hardware LIN module (UART0 + Timer RA) |
Pinout & Package
Package: 100-pin LQFP (PLQP0100KB-A, 0.50 mm pitch), RoHS-compliant, N-version (-20°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0–P0_7 | SEG0–SEG7 / AN4–AN9 | Segment outputs and analog inputs for LCD and sensor monitoring |
| P1_0–P1_7 | SEG8–SEG15 / AN12–AN15 | Additional segment outputs and analog inputs for extended display/sensing |
| P2_0–P2_7 | SEG16–SEG23 / KI0–KI7 | Segment outputs and key input interrupt pins for keypad interface |
| P3_0–P3_7 | SEG24–SEG31 / INT0–INT7 | Segment outputs and external interrupt inputs for user interaction |
| P4_0–P4_7 | SEG32–SEG39 / TXD1, RXD1, CLK1, TRCxxx | Segment outputs plus UART1 and trace clock/debug signals |
| P6_0–P6_7 | SEG44–SEG51 / TRDIOA0–TRDIOD1 | Segment outputs and Timer RD I/O for PWM motor control |
| P7_0–P7_7 | COM0–COM7 / SEG52–SEG55 | Common outputs and additional segment pins for multiplexed LCD |
| P11_0–P11_7 | SCL/SSCK, SSI, SDA/SSO, TRAO/TRBO/TREO | I²C, SPI, and Timer RB/RE output pins for peripheral coordination |
| P12_0/P12_1 | XIN/XOUT | External crystal oscillator connection for precise timing |
| P13_0/P13_1 | AN0/DA0, AN1/DA1 | Analog inputs and 8-bit D/A outputs for feedback control |
| VL1–VL4 | LCD bias supply | Dedicated pins for LCD voltage multiplier outputs (1/2, 1/3, 1/4 bias) |
| CL1/CL2 | LCD clock inputs | External clock inputs for LCD frame rate control |
| RESET | Active-low reset input | Hardware reset with internal power-on reset and voltage detection circuit |
| MODE | Boot mode select | Configures boot source (ROM vs. user-defined vector table) |
| VCC/AVCC, VSS/AVSS | Power and ground | Separate analog/digital supplies for noise-sensitive ADC and LCD operation |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Enables concurrent flash programming/erasure during application execution - critical for firmware updates without halting system operation |
| Integrated LCD Voltage Multiplier | Eliminates need for external charge pump ICs; supports static, 1/2, 1/3, and 1/4 duty LCD bias configurations |
| Hardware LIN Module | Offloads LIN protocol handling (UART0 + Timer RA) - reduces CPU load and ensures deterministic timing for automotive body electronics |
| High-Current I/O Ports | 16 pins rated for higher sink/source current - directly drives LEDs, relays, or small solenoids without external drivers |
| Data Transfer Controller (DTC) | Single-channel DMA-like engine with 38 trigger sources - automates data movement between peripherals and memory, freeing CPU cycles |
| Real-Time Clock (Timer RE) | 8-bit timer with calendar mode (seconds, minutes, hours, weekday) - enables time-stamped logging and scheduled wake-up events |
Applications
| Appliance Control Panel | Industrial HMI Display |
|---|---|
Use Scenario: Microcontroller manages user interface, sensor readings, and actuator control in washing machine or microwave oven front panel. IC Role / Device Role / Timing Role: Central controller executing UI logic, scanning 8×8 keypad matrix via P2/P3 key inputs, driving 56-segment LCD with VL1–VL4 bias, and regulating motor speed via Timer RD PWM. Use Value: Integrated LCD driver and 20-channel ADC eliminate discrete bias ICs and external ADC, reducing BOM count by ≥4 components. | Use Scenario: Embedded controller in factory-floor operator terminal with segmented LCD, pushbuttons, and analog sensor inputs. IC Role / Device Role / Timing Role: Real-time coordinator of human input (key interrupts), display refresh (LCD controller), and process monitoring (20-channel A/D sampling at 100 kSPS). Use Value: 88 I/O pins and BGO flash allow field-upgradable firmware while maintaining display and I/O responsiveness during update. |
| Home Audio Front Panel | Smart Thermostat Interface |
Use Scenario: Audio equipment front-end managing volume, source selection, and status display using segmented LCD and rotary encoder. IC Role / Device Role / Timing Role: Timer RG performs phase counting for encoder position tracking; UART2 handles I²C communication with audio codec; LCD controller drives 48+ segment display. Use Value: Hardware encoder interface and integrated I²C reduce external logic, enabling compact PCB layout with <15 mm² MCU footprint. | Use Scenario: Battery-powered HVAC thermostat requiring ultra-low-power operation and segmented LCD readout. IC Role / Device Role / Timing Role: Executes temperature control loop in active mode; enters stop mode (2 µA) between sensor reads; wakes via RTC alarm or key press to update display. Use Value: Sub-µA power-off mode (0.02 µA) extends CR2032 battery life to >5 years in sleep-dominated operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F2L38ACNFP | 80-pin LQFP, 96 KB flash, 16-channel A/D, 48-segment LCD drive | Fewer I/O (68 vs. 88) and LCD segments (48 vs. 56); no Timer RG I/O pins | Select when board space or segment count constraints limit use of 100-pin package |
| R5F2L36ACNFP | 64-pin LQFP, 96 KB flash, 10-channel A/D, 32-segment LCD drive | Lower I/O count (52), no Timer RD three-phase PWM, no CL1/CL2 LCD clocks | Choose for cost-sensitive designs where motor control and extended LCD are not required |
Compared with R5F2L38ACNFP and R5F2L36ACNFP, the R5F2L3AACNFP#31 provides the highest I/O density, full three-phase motor control capability via Timer RD, and maximum LCD segment support - making it optimal for complex appliance UIs requiring both rich display and multi-peripheral coordination.
Availability
R5F2L3AACNFP#31 is available at Aetrix Electronics and suitable for appliance control panels, industrial HMIs, home audio front ends, and smart thermostats requiring stable component supply across long production lifecycles.
Supply support for R5F2L3AACNFP#31 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 is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT markets.
The R8C/L3AC Group targets cost-sensitive, LCD-based embedded systems - designed to integrate display control, sensor acquisition, and actuator drive in a single chip for white goods and consumer electronics.
FAQ
What is the operating temperature range for R5F2L3AACNFP#31?
The R5F2L3AACNFP#31 is an N-version device rated for -20°C to +85°C ambient operating temperature. This specification is confirmed in Table 1.6 of the R01DS0095EJ0101 datasheet and applies to all variants with the 'N' suffix in the part number, including R5F2L3AACNFP#31.
Does R5F2L3AACNFP#31 support in-circuit debugging?
Yes, R5F2L3AACNFP#31 includes an on-chip debug function compatible with Renesas E1/E20 emulators. The debug interface uses dedicated pins (including RESET and MODE) and supports full break-point, step-execution, and memory inspection capabilities without requiring external JTAG hardware.
How many analog input channels does R5F2L3AACNFP#31 provide?
R5F2L3AACNFP#31 provides 20 analog input channels for its 10-bit A/D converter, as specified in Table 1.5 under "A/D Converter" for the R8C/L3AC Group. These channels are mapped across P0, P1, P2, P3, and P13 pins, with dedicated AN0–AN19 labeling.
What LCD bias configurations are supported by R5F2L3AACNFP#31?
R5F2L3AACNFP#31 supports 1/2, 1/3, and 1/4 LCD bias via its integrated voltage multiplier and dedicated VL1–VL4 pins. Unlike earlier R8C groups, it does not require external resistors or charge pumps - bias selection is configured through LCD control registers (LCON0–LCON2).
Is R5F2L3AACNFP#31 pin-compatible with other R8C/L3x devices?
No, R5F2L3AACNFP#31 is not pin-compatible with R8C/L35C, L36C, or L38C devices due to its 100-pin LQFP package (PLQP0100KB-A), whereas those groups use 52-, 64-, and 80-pin packages respectively. Pin assignments, I/O counts, and peripheral mappings differ significantly across the family.
R5F2L3AACNFP#31 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 100-LQFP
- Series:
- R8C/Lx/3AC
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- I2C, LINbus, SIO, SSU, UART/USART
- Peripherals:
- LCD, POR, PWM, Voltage Detect, WDT
- Number of I/O:
- 88
- Program Memory Size:
- 96KB (96K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 10K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 20x10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F2L3AACNFP#31 FAQ
1.How can I place an order for R5F2L3AACNFP#31 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F2L3AACNFP#31 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 R5F2L3AACNFP#31 reliable?
The price and inventory of R5F2L3AACNFP#31 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F2L3AACNFP#31 is usually 5 days.
3.What payment methods are accepted for R5F2L3AACNFP#31?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F2L3AACNFP#31 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F2L3AACNFP#31?
R5F2L3AACNFP#31 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F2L3AACNFP#31 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 R5F2L3AACNFP#31?
For technical support, including R5F2L3AACNFP#31 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F2L3AACNFP#31 requirements.
6.How does Aetrix verify that R5F2L3AACNFP#31 is sourced from the original manufacturer or authorized distributors?
All R5F2L3AACNFP#31 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 R5F2L3AACNFP#31 meets industry standards.
7.What is the process for return or replacement of R5F2L3AACNFP#31?
All R5F2L3AACNFP#31 units undergo pre-shipment inspection (PSI). If there is an issue with R5F2L3AACNFP#31, 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 R5F2L3AACNFP#31 part is unused and in its original packaging.
Return procedure for R5F2L3AACNFP#31:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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