My Inquiry
My Account
Renesas R5F2L3A8CNFP#31
- Part No.:
- R5F2L3A8CNFP#31
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
R5F2L3A8CNFP#31.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 100LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,115
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
R5F2L3A8CNFP#31 from Renesas is an 88-pin LQFP MCU in the R8C/L3AC Group, featuring the R8C CPU core, 64 KB program flash, 8 KB RAM, 20-channel 10-bit ADC, and integrated LCD controller supporting up to 8 common and 56 segment outputs for embedded appliance UIs.
For engineers reviewing the R5F2L3A8CNFP#31 datasheet, R5F2L3A8CNFP#31 pinout, R5F2L3A8CNFP#31 application, or R5F2L3A8CNFP#31 equivalent, key selection criteria include its 100-pin LQFP package, -20°C to +85°C N-version rating, background data flash operation, and hardware LIN support via UART0 and Timer RA.
Technical Context
The R5F2L3A8CNFP#31 implements the R8C 16-bit CPU core with 89 instructions and a dedicated 16×16→32-bit multiplier for efficient signal processing. It supports four clock sources: XIN (up to 20 MHz), XCIN (32 kHz), high-speed on-chip oscillator (adjustable), and low-speed on-chip oscillator.
Its peripheral set includes Timer RD (16-bit ×2, supporting 6-pin complementary PWM), Timer RG (16-bit phase-counting/PWM), DTC (1 channel, 38 activation sources), and dual UARTs with I²C mode on UART2 - enabling robust serial communication in resource-constrained appliances.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions and 16×16→32-bit hardware multiplier |
| Flash / RAM | 64 KB program flash + 1 KB ×4 data flash with BGO; 8 KB RAM |
| ADC | 10-bit resolution ×20 channels with sample-and-hold and sweep mode |
| LCD Driver | Supports up to 8 COM and 56 SEG pins; integrated voltage multiplier and regulator |
| Timers | Timer RA/RB (8-bit), RC/RD/RG (16-bit), RE (real-time clock), plus watchdog timer |
| I/O Ports | 88 programmable CMOS I/O pins with selectable pull-up; 16 high-current drive ports |
| Operating Range | VCC = 1.8–5.5 V; ambient temperature –20°C to +85°C (N version) |
Pinout & Package
Package: PLQP0100KB-A - 100-pin LQFP, 0.50 mm pitch, exposed pad not specified, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0 to P0_7 | SEG0–SEG7 / AN4–AN9 | Segment outputs and analog inputs for LCD and sensor interface |
| P1_0 to P1_7 | SEG8–SEG15 / AN12–AN15 | Additional segment and analog input pins for extended display/sensing |
| P2_0 to P2_7 | SEG16–SEG23 / KI0–KI7 | Segment outputs and key-input interrupt pins for keypad scanning |
| P3_0 to P3_7 | SEG24–SEG31 / INT0–INT7 | Segment outputs and external interrupt inputs for user interaction |
| P4_0 to P4_7 | SEG32–SEG39 / TXD1, RXD1, CLK1, TRCIOx | Segment outputs and UART/trace clock I/O for debug and comms |
| P6_0 to P6_7 | SEG44–SEG51 / TRDIOA0–TRDIOD1 | Segment outputs and Timer RD I/O for motor control waveforms |
| P7_0 to P7_7 | COM0–COM7 / SEG52–SEG55 | Common outputs and shared segment pins for multiplexed LCD driving |
| VL1–VL4, CL1, CL2 | LCD bias supply and clock | Dedicated pins for LCD voltage generation and timing control |
| XIN / XOUT | External crystal oscillator input/output | Supports precise 20 MHz system clock with low jitter |
| XCIN / XCOUT | 32 kHz real-time clock oscillator | Enables low-power RTC operation independent of main clock |
| RESET | Active-low reset input | Hardware reset with internal power-on reset and voltage detection |
| MODE | Boot mode selection | Determines startup vector and flash protection configuration |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Data flash erase/write while executing code from program flash |
| Hardware LIN Module | Full LIN 2.1 compliance using UART0 and Timer RA for accurate baud rate and sync field generation |
| Low-Power Modes | Wait (3.5 µA), stop (2 µA), and power-off (0.02 µA) modes with wake-up on interrupt or RTC alarm |
| DTC Transfer Controller | Single-channel DMA-like engine reducing CPU load during ADC-to-memory or UART-to-memory transfers |
| Voltage Detection | Configurable voltage detection levels (VDD monitor) with reset or interrupt output for brown-out protection |
Applications
| Microwave Oven Control Panel | Refrigerator Display & Sensor Hub |
|---|---|
Use Scenario: Managing touchless keypad, segmented LCD display, temperature sensors, and relay drivers in a Class II insulated appliance. IC Role / Device Role / Timing Role: Primary system controller executing real-time UI updates, ADC sampling at 100 ksps, and LIN communication with door lock module. Use Value: Integrated LCD driver eliminates external glass driver IC; 20-channel ADC supports simultaneous freezer/fridge/evaporator sensing without mux overhead. | Use Scenario: Central control unit coordinating multi-zone temperature monitoring, defrost cycle timing, and energy-efficient compressor modulation. IC Role / Device Role / Timing Role: Real-time scheduler running RTOS tasks, generating PWM for variable-speed fan, and maintaining RTC across power cycles. Use Value: Timer RD's complementary PWM mode enables precise 3-phase motor control; BGO allows firmware updates without interrupting cooling logic. |
| Washing Machine User Interface | Smart Air Purifier Control Board |
Use Scenario: Driving 6-digit 7-segment display, reading rotary encoder and water level switch inputs, and controlling solenoid valves via high-current I/O. IC Role / Device Role / Timing Role: Dedicated UI processor handling button debouncing, display refresh at 60 Hz, and LIN messaging to main motor MCU. Use Value: 16 high-current drive ports directly sink 20 mA per pin for LED segments and relays; key-input interrupts reduce polling overhead by >90%. | Use Scenario: Monitoring PM2.5, VOC, and humidity sensors while managing OLED status display, fan speed, and filter-life countdown. IC Role / Device Role / Timing Role: Sensor fusion node aggregating analog and I²C data, performing basic filtering, and reporting via UART to host MCU. Use Value: Dual UARTs allow concurrent I²C sensor comms and host reporting; D/A converters provide analog reference voltages for precision sensor biasing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F2L3A8CNFA#30 | Same die, but in 100-pin QFP (0.65 mm pitch); identical electrical specs and memory map | Requires PCB layout change due to different footprint and thermal pad design | Select when legacy QFP assembly infrastructure is in place or thermal dissipation via exposed pad is not required |
| R5F2L388CNFP#30 | 64 KB flash, 8 KB RAM, but only 16 ADC channels and 48 SEG outputs; 80-pin LQFP package | Lower I/O count and LCD capability limits use to smaller displays or fewer sensors | Choose for cost-sensitive designs where full R8C/L3AC feature set is unnecessary and board space is constrained |
Compared with R5F2L3A8CNFP#31, R5F2L3A8CNFA#30 offers identical functionality in a different package for legacy manufacturing, while R5F2L388CNFP#30 provides a scaled-down alternative with reduced LCD and analog resources - both require careful evaluation of pin compatibility and thermal requirements before substitution.
Availability
R5F2L3A8CNFP#31 is available at Aetrix Electronics and suitable for microwave oven control panels, refrigerator display & sensor hubs, and washing machine user interfaces requiring stable component supply across long production lifecycles.
Supply support for R5F2L3A8CNFP#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 Corporation is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, and IoT markets.
The R8C/L3AC Group targets cost-optimized, low-power appliance control with integrated LCD driving, analog sensing, and LIN connectivity - designed specifically for white goods and consumer electronics with human interface requirements.
FAQ
What is the maximum operating frequency and supply voltage range for the R5F2L3A8CNFP#31?
The R5F2L3A8CNFP#31 supports a maximum operating frequency of 20 MHz when supplied at 2.7–5.5 V, and operates down to 5 MHz at 1.8–5.5 V for ultra-low-voltage applications. Its internal voltage detection circuit ensures reliable reset behavior across this full range, and the high-speed on-chip oscillator can be trimmed to maintain timing accuracy without external crystals in less demanding use cases.
Does the R5F2L3A8CNFP#31 support background operation (BGO) for data flash writes?
Yes, the R5F2L3A8CNFP#31 supports background operation (BGO) for its 1 KB ×4 data flash blocks. This allows the R5F2L3A8CNFP#31 to execute application code from program flash while simultaneously erasing or programming data flash - essential for logging runtime parameters or updating calibration data without halting system operation.
How many LCD segment and common pins does the R5F2L3A8CNFP#31 support, and what bias/duty options are available?
The R5F2L3A8CNFP#31 supports up to 56 segment output pins and 8 common output pins. It integrates a voltage multiplier and dedicated regulator, enabling static, 1/2, 1/3, 1/4, and 1/8 duty drive modes with 1/2 and 1/3 bias options - allowing direct drive of large-character segmented displays commonly used in kitchen appliances without external bias circuitry.
What peripherals enable LIN bus communication on the R5F2L3A8CNFP#31?
The R5F2L3A8CNFP#31 implements hardware LIN 2.1 support using UART0 for serial framing and Timer RA for precise sync field timing and baud rate generation. This offloads LIN protocol handling from firmware, ensuring deterministic response times and reducing CPU utilization - critical for real-time appliance subsystem communication such as door lock or detergent dispensing modules.
Is the R5F2L3A8CNFP#31 pin-compatible with other members of the R8C/L3x family?
No, the R5F2L3A8CNFP#31 is not pin-compatible with lower-pin-count R8C/L3x variants like the L35C or L36C groups. Its 100-pin LQFP package (PLQP0100KB-A) has unique pin assignments optimized for 88 I/Os and expanded LCD resources. Migration from smaller packages requires PCB redesign, though software compatibility is maintained within the R8C instruction set and peripheral register map.
R5F2L3A8CNFP#31 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 100-LQFP
- Series:
- R8C/Lx/3AC
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- 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:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 8K 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:
R5F2L3A8CNFP#31 FAQ
1.How can I place an order for R5F2L3A8CNFP#31 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F2L3A8CNFP#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 R5F2L3A8CNFP#31 reliable?
The price and inventory of R5F2L3A8CNFP#31 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F2L3A8CNFP#31 is usually 5 days.
3.What payment methods are accepted for R5F2L3A8CNFP#31?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F2L3A8CNFP#31 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F2L3A8CNFP#31?
R5F2L3A8CNFP#31 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F2L3A8CNFP#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 R5F2L3A8CNFP#31?
For technical support, including R5F2L3A8CNFP#31 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F2L3A8CNFP#31 requirements.
6.How does Aetrix verify that R5F2L3A8CNFP#31 is sourced from the original manufacturer or authorized distributors?
All R5F2L3A8CNFP#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 R5F2L3A8CNFP#31 meets industry standards.
7.What is the process for return or replacement of R5F2L3A8CNFP#31?
All R5F2L3A8CNFP#31 units undergo pre-shipment inspection (PSI). If there is an issue with R5F2L3A8CNFP#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 R5F2L3A8CNFP#31 part is unused and in its original packaging.
Return procedure for R5F2L3A8CNFP#31:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F2L3A8CNFP#31 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…
