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Renesas R5F2138ASNFP#V0
- Part No.:
- R5F2138ASNFP#V0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
R5F2138ASNFP#V0.pdf
- Description:
- IC MCU 16BIT 96KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,395
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Product details
Overview
R5F2138ASNFP#V0 from Renesas is a 16-bit R8C CPU core microcontroller with 96 KB flash program ROM, 8 KB data flash (4 × 1 KB blocks), and 8 KB RAM, operating at up to 20 MHz (2.7–5.5 V) or 5 MHz (1.8–5.5 V). It integrates a 10-bit 20-channel A/D converter, hardware LIN module, touch sensor control unit (36-channel capacitive sensing), and dual UART + I²C + SSU serial interfaces for embedded control in resource-constrained appliances.
For engineers reviewing the R5F2138ASNFP#V0 datasheet, R5F2138ASNFP#V0 pinout, R5F2138ASNFP#V0 application, or R5F2138ASNFP#V0 equivalent, this MCU supports low-power wait/stop modes (down to 2.2 µA), background operation (BGO) for data flash reprogramming, and EMI/EMS-optimized design for reliable operation in consumer-grade industrial environments.
Technical Context
The R5F2138ASNFP#V0 implements the R8C CPU core with 89 fundamental instructions, 16×16→32-bit multiplier, and multiply-accumulate capability. Its memory map spans 1 Mbyte (00000h–FFFFFh), with program ROM allocated across lower and upper address ranges depending on capacity (e.g., 96 KB at 08000h–1FFFFh).
Peripheral integration includes four independent clock sources (XIN/XCIN oscillators, high-speed/low-speed on-chip oscillators), event link controller (30 sources × 10 operations), DTC (1 channel, 27 activation sources), and dedicated TSCU hardware supporting electrostatic capacitive touch detection without host CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions, 50 ns min instruction time at 20 MHz |
| Memory | 96 KB flash program ROM, 8 KB data flash (4 × 1 KB BGO-enabled blocks), 8 KB RAM |
| Operating Voltage | 1.8 V to 5.5 V - enables single-supply operation across battery and line-powered systems |
| A/D Converter | 10-bit resolution, 20 input channels, sample-and-hold, sweep mode for rapid multi-channel acquisition |
| Touch Sensing | TSCU supports 36-channel electrostatic capacitive touch detection with system-level noise immunity |
| Low-Power Modes | Wait mode (4.0 µA @ 3.0 V, 32 kHz XCIN), stop mode (2.2 µA @ 3.0 V) - extends battery life in portable devices |
| Serial Interfaces | UART0 (2 channels), UART2 (1 channel with I²C mode), SSU/I²C_0 (shared function), HW-LIN_0 (1 channel) |
Pinout & Package
Package: 80-pin LQFP (PLQP0080KB-A), 0.5 mm pitch, 12 × 12 mm body, N-version (−20°C to +85°C ambient).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET | Active-low reset input | Hardware reset initiation; synchronous deassertion required for reliable release |
| XIN / XOUT | Main system clock oscillator interface | Supports ceramic resonator or crystal (1–20 MHz); enables high-accuracy timing for UART/LIN |
| XCIN / XCOUT | Sub-clock oscillator interface | Connects 32.768 kHz crystal for real-time clock and ultra-low-power stop-mode timing |
| AN0–AN19 | Analog inputs for A/D converter | 20 dedicated pins with internal sample-and-hold; usable with VREF pin for precision measurement |
| CH00–CH35, CHxA0–CHxC | Touch electrode channels | 36 dedicated pins for capacitive sensing; TSCU handles charge-transfer timing and baseline tracking autonomously |
| UART0_0 / UART0_1 / UART2 | Asynchronous serial I/O | Three independent UARTs - UART2 supports I²C-bus mode for sensor hub connectivity |
| P0_0–P9_5 (75 CMOS I/O) | Programmable digital I/O | All support pull-up selection and high-current drive (LED direct-drive capable); P4_2 is input-only |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Data flash reprogramming while executing code from program ROM - enables firmware updates without halting operation |
| Hardware LIN Module | Dedicated LIN 2.1/2.2 compliant transceiver logic using UART0_0/0_1/RJ_0 - eliminates external transceiver in automotive body electronics |
| Event Link Controller (ELC) | 30 peripheral event sources linked to 10 operation types without CPU involvement - reduces interrupt latency and firmware overhead |
| Voltage Detection Circuit | Three configurable voltage detection levels with POR and selectable reset thresholds - ensures robust power-on sequencing and brown-out recovery |
| EMI/EMS Optimization | On-die layout and clock gating designed to meet IEC 61000-4-x immunity standards - simplifies compliance testing for household appliances |
Applications
| Home Appliance Control | Office Equipment Interface |
|---|---|
Use Scenario: Microcontroller in washing machine main board managing motor control, water level sensing, and user interface. IC Role / Device Role / Timing Role: Central system controller executing real-time motor PWM, ADC sampling of pressure sensors, and capacitive touch panel decoding. Use Value: Integrated TSCU offloads touch processing from CPU; BGO allows field firmware updates during idle cycles without service interruption. | Use Scenario: Embedded controller in multifunction printer handling paper feed, toner monitoring, and USB-to-parallel bridge logic. IC Role / Device Role / Timing Role: Peripheral coordinator managing UART-based sensor comms, LIN-connected toner cartridges, and 10-bit ADC for temperature/humidity monitoring. Use Value: Dual UART + I²C + LIN support enables concurrent communication with multiple subsystems; 8 KB RAM accommodates print job buffering and protocol stacks. |
| Audio System Front Panel | Consumer Remote Control Hub |
Use Scenario: Keypad and display manager in AV receiver front panel with rotary encoder and LED indicators. IC Role / Device Role / Timing Role: Input processor for key interrupts (KI0–KI3), PWM-driven LED dimming, and UART-linked main audio DSP. Use Value: 75 CMOS I/O with programmable pull-ups simplify discrete button matrix design; low-power stop mode extends standby battery life. | Use Scenario: Universal IR remote base with BLE/Wi-Fi bridge and capacitive touch buttons for smart home control. IC Role / Device Role / Timing Role: Touch sensor hub interfacing with 36-electrode overlay, managing BLE coexistence via UART2, and executing low-latency gesture recognition. Use Value: Dedicated TSCU provides noise-immune touch detection at <10 µA average current; hardware CRC calculator accelerates secure OTA update verification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F2138CSNFP | 128 KB program ROM, 10 KB RAM, same package and peripheral set | Required when application firmware exceeds 96 KB or demands larger runtime data buffers | Select if future firmware growth or complex RTOS usage necessitates extra memory headroom |
| R5F21388SNFP | 64 KB program ROM, 6 KB RAM, identical clock/peripheral specs and pinout | Suitable for cost-sensitive designs with smaller firmware footprint and reduced RAM needs | Choose for legacy product refresh or simplified feature sets where memory compression is viable |
Compared with R5F2138CSNFP and R5F21388SNFP, the R5F2138ASNFP#V0 delivers optimal balance of code space (96 KB), data flash (8 KB), and RAM (8 KB) for mid-tier appliance control - avoiding over-provisioning while ensuring headroom for feature expansion and BGO-safe updates.
Availability
R5F2138ASNFP#V0 is available at Aetrix Electronics and suitable for electronic household appliances, office equipment, audio equipment, and consumer equipment requiring stable component supply across extended production lifecycles.
Supply support for R5F2138ASNFP#V0 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 industrial, automotive, and IoT markets.
The R8C/38T-A Group is engineered for cost-effective, EMI-resilient embedded control in consumer appliances - emphasizing integrated touch sensing, low-power operation, and mixed-signal peripheral consolidation to minimize BOM count.
FAQ
What is the maximum CPU clock frequency supported by the R5F2138ASNFP#V0?
The R5F2138ASNFP#V0 supports a maximum CPU clock frequency of 20 MHz when powered at 2.7 V to 5.5 V. At lower supply voltages (1.8 V to 5.5 V), the maximum guaranteed frequency is 5 MHz to ensure timing margin and stability. This dual-voltage/frequency specification allows flexible power-performance trade-offs in battery-operated or wide-input-range designs.
Does the R5F2138ASNFP#V0 include on-chip debug capability?
Yes, the R5F2138ASNFP#V0 includes on-chip debug functionality supporting real-time execution control, breakpoint setting, and register/memory inspection via the standard Renesas E8/E8a debug interface. This enables full firmware development and validation without external emulators, reducing tooling cost and accelerating bring-up for R5F2138ASNFP#V0-based designs.
How many touch sensing channels does the R5F2138ASNFP#V0 support, and what is the underlying technology?
The R5F2138ASNFP#V0 supports 36 electrostatic capacitive touch sensing channels via its integrated Touch Sensor Control Unit (TSCU). It uses charge-transfer measurement with automatic baseline calibration and noise suppression - enabling robust button, slider, and proximity detection without external components or host CPU polling overhead.
What serial communication interfaces are available on the R5F2138ASNFP#V0?
The R5F2138ASNFP#V0 provides UART0 (two independent channels), UART2 (one channel with I²C-bus mode), SSU/I²C_0 (shared function), and a hardware LIN module (HW-LIN_0). These interfaces support simultaneous use - for example, UART0_0 for debug, UART2 in I²C mode for sensor communication, and LIN for automotive subsystem control - all within the same R5F2138ASNFP#V0 device.
Is the R5F2138ASNFP#V0 pin-compatible with other members of the R8C/38T-A Group?
Yes, the R5F2138ASNFP#V0 is pin-compatible with all 80-pin LQFP variants in the R8C/38T-A Group, including R5F21388SNFP and R5F2138CSNFP. Identical PLQP0080KB-A packaging and shared peripheral mapping allow drop-in replacement across memory variants - simplifying design reuse and scalability without PCB revision.
R5F2138ASNFP#V0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-LQFP
- Series:
- R8C/3x/38T-A
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- I2C, LINbus, SIO, SSU, UART/USART
- Peripherals:
- POR, PWM, Voltage Detect, WDT
- Number of I/O:
- 75
- Program Memory Size:
- 96KB (96K 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
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F2138ASNFP#V0 FAQ
1.How can I place an order for R5F2138ASNFP#V0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F2138ASNFP#V0 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 R5F2138ASNFP#V0 reliable?
The price and inventory of R5F2138ASNFP#V0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F2138ASNFP#V0 is usually 5 days.
3.What payment methods are accepted for R5F2138ASNFP#V0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F2138ASNFP#V0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F2138ASNFP#V0?
R5F2138ASNFP#V0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F2138ASNFP#V0 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 R5F2138ASNFP#V0?
For technical support, including R5F2138ASNFP#V0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F2138ASNFP#V0 requirements.
6.How does Aetrix verify that R5F2138ASNFP#V0 is sourced from the original manufacturer or authorized distributors?
All R5F2138ASNFP#V0 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 R5F2138ASNFP#V0 meets industry standards.
7.What is the process for return or replacement of R5F2138ASNFP#V0?
All R5F2138ASNFP#V0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F2138ASNFP#V0, 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 R5F2138ASNFP#V0 part is unused and in its original packaging.
Return procedure for R5F2138ASNFP#V0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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