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Renesas R5F21388SDFP#V0
- Part No.:
- R5F21388SDFP#V0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
R5F21388SDFP#V0.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:972
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Product details
Overview
R5F21388SDFP from Renesas Electronics is a 16-bit R8C CPU core microcontroller with 64 KB flash program memory, 6 KB RAM, and 4 KB data flash (1 KB × 4 blocks) supporting background operation (BGO). It integrates a 36-channel electrostatic capacitive touch sensor control unit (TSCU), 10-bit A/D converter (20 channels), hardware LIN module, UART0/UART2/SSU/I²C serial interfaces, and multiple timers including 16-bit RJ, RB2, RC, and 8-bit RE2. It targets embedded control in consumer appliances requiring robust EMI/EMS performance and low-power operation.
For engineers reviewing the R5F21388SDFP datasheet, R5F21388SDFP pinout, R5F21388SDFP application, or R5F21388SDFP equivalent, key selection considerations include its -40°C to +85°C industrial temperature grade (D version), 80-pin LQFP package, on-chip voltage detection with three selectable thresholds, and support for wait/stop low-power modes with sub-µA current consumption.
Technical Context
The R5F21388SDFP implements the R8C CPU core with 89 fundamental instructions and a 16×16→32-bit hardware multiplier enabling efficient arithmetic. Its memory map spans 1 Mbyte (00000h–FFFFFh), with program ROM allocated across 08000h–17FFFh and data flash at 07000h–07FFFh.
Peripheral integration includes an Event Link Controller (30 sources × 10 event types) for autonomous peripheral coordination without CPU intervention, a Data Transfer Controller (DTC) with 27 activation sources, and dual UART channels (UART0_0/UART0_1) plus UART2 supporting I²C-bus mode - all sharing pins with SSU and TSCU functions on a shared 80-pin LQFP footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions; executes at 50 ns min (20 MHz, 2.7–5.5 V) or 200 ns min (5 MHz, 1.8–5.5 V) |
| Memory | 64 KB flash program ROM, 6 KB RAM, 4 KB data flash (1 KB × 4 blocks) with BGO for concurrent read/write |
| Operating Temp | -40°C to +85°C (D version), validated for industrial ambient conditions |
| Power Supply | 1.8 V to 5.5 V operation; typical current 6.5 mA @ 5 V/20 MHz, 4.0 µA @ 3 V/wait mode (32 kHz) |
| Analog Peripherals | 10-bit A/D converter (20 channels, sample-and-hold, sweep mode); 2 comparator B circuits; TSCU with 36 touch channels |
| Timers & Control | Timer RJ_0 (16-bit), RB2_0 (16-bit PWM), RC_0 (16-bit w/4 capture/compare), RE2 (8-bit RTC/compare match) |
| Serial Interfaces | UART0_0/UART0_1 (2 ch), UART2 (1 ch w/I²C mode), SSU_0/I²C_0 (shared resource), HW-LIN_0 (1 ch) |
Pinout & Package
Package: 80-pin LQFP (PLQP0080KB-A), 0.5 mm pitch, 12 × 12 mm body. Pinout validated per Renesas R01DS0081EJ0100 Rev.1.00 datasheet Figures 1.3 and Tables 1.4–1.9.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET | Reset input | Active-low asynchronous reset; initiates full system initialization |
| XIN / XOUT | External crystal oscillator interface | Supports ceramic resonator or crystal up to 20 MHz; enables precise clock source |
| XCIN / XCOUT | Low-speed external oscillator interface | Connects 32.768 kHz crystal for real-time clock or low-power timing |
| P0_0–P0_7 | CMOS I/O port with analog inputs | 8-bit bidirectional port; AN0–AN7 multiplexed; pull-up resistor programmable |
| TRCIOA_0–TRCIOD_0 | Timer RC I/O terminals | Four 16-bit timer channel I/Os supporting capture, compare, and PWM output |
| CH00–CH35 | Touch sensor electrode inputs | 36 dedicated pins for electrostatic capacitive touch detection via TSCU |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Data flash supports concurrent program execution and erase/write operations without CPU stall |
| Hardware LIN Module | Dedicated LIN 2.1/SAE J2602-compliant transceiver logic using UART0_0/UART0_1 or UART2 resources |
| Voltage Detection Circuit | Three independent voltage monitor levels with configurable thresholds for power-on reset and brown-out detection |
| Event Link Controller (ELC) | Enables 30 peripheral events to trigger 10 different actions (e.g., ADC start on timer match) without interrupt latency |
| Low-Power Modes | Wait mode (4.0 µA @ 3 V/32 kHz) and stop mode (2.2 µA @ 3 V) extend battery life in portable applications |
Applications
| Home Appliance Control | Office Equipment Interface |
|---|---|
Use Scenario: Microcontroller in washing machine control panel managing motor drive, water level sensing, and user touch interface. IC Role / Device Role / Timing Role: Central controller executing real-time motor sequencing, reading 20-channel A/D for pressure/temperature sensors, and scanning 36 TSCU electrodes for buttonless UI. Use Value: Integrated TSCU eliminates external touch IC; BGO enables firmware updates during idle cycles without halting appliance operation. | Use Scenario: Embedded controller in multifunction printer managing paper feed, ink monitoring, and network-connected status reporting. IC Role / Device Role / Timing Role: System-on-chip handling UART2-based Ethernet/Wi-Fi module communication, LIN bus for internal sensor networks, and PWM-driven stepper motor control. Use Value: Hardware LIN reduces MCU loading versus software bit-banged protocols; 64 KB flash accommodates field-upgradable print firmware. |
| Consumer Audio System | Industrial Human-Machine Interface |
Use Scenario: Audio amplifier subsystem with digital volume control, input source switching, and OLED display driver. IC Role / Device Role / Timing Role: Peripheral coordinator using SSU/I²C to drive display, UART0 for remote IR command parsing, and RE2 timer for accurate audio sample timing. Use Value: Shared SSU/I²C pins reduce PCB routing complexity; 10-bit A/D reads potentiometer inputs with 0.1% linearity over full temp range. | Use Scenario: Panel-mounted HMI in factory automation equipment requiring reliable operation in harsh electrical environments. IC Role / Device Role / Timing Role: Industrial-grade MCU executing deterministic control loops, monitoring 20 analog sensor inputs, and communicating via UART2 to PLC master. Use Value: -40°C to +85°C rating ensures reliability in unconditioned enclosures; EMI/EMS-optimized design meets IEC 61000-4 immunity standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21388SNFP | Same core, memory, and peripherals but rated for -20°C to +85°C (N version) | Not qualified for extended industrial temperature range; unsuitable for outdoor or unheated environments | Select only if operating ambient stays above -20°C and cost sensitivity outweighs thermal margin |
| R5F2138ASDFP | 96 KB program ROM, 8 KB RAM, identical D-version temperature grade and pinout | Higher memory capacity supports larger firmware images and additional protocol stacks (e.g., USB HID) | Choose when application requires >64 KB code space while retaining same footprint and qualification |
Compared with R5F21388SNFP, the R5F21388SDFP provides guaranteed operation down to -40°C - critical for automotive cabin modules or outdoor kiosks - while R5F2138ASDFP offers 32 KB more flash for complex UI or connectivity firmware without changing PCB layout.
Availability
R5F21388SDFP is available at Aetrix Electronics and suitable for home appliance control, office equipment interface, and industrial human-machine interface applications requiring stable component supply across multi-year production cycles.
Supply support for R5F21388SDFP 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 specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT markets.
The R8C/38T-A Group, including R5F21388SDFP, was designed for cost-sensitive, high-reliability embedded control in consumer electronics with integrated touch sensing and mixed-signal capability.
FAQ
What is the maximum CPU clock frequency supported by the R5F21388SDFP?
The R5F21388SDFP supports a maximum CPU clock frequency of 20 MHz when operating at VCC = 2.7 V to 5.5 V, delivering a minimum instruction execution time of 50 ns. At lower voltages (1.8 V to 5.5 V), the maximum clock is reduced to 5 MHz with a 200 ns minimum instruction time - a trade-off ensuring stable operation across wide supply ranges.
Does the R5F21388SDFP include hardware support for LIN communication?
Yes, the R5F21388SDFP integrates a dedicated hardware LIN module (HW-LIN_0) compliant with LIN 2.1 and SAE J2602 standards. It uses UART0_0, UART0_1, or UART2 resources under firmware control, enabling deterministic frame timing and automatic checksum generation without CPU overhead.
How many analog input channels does the R5F21388SDFP A/D converter support?
The R5F21388SDFP features a 10-bit successive-approximation A/D converter with 20 analog input channels (AN0 through AN19), supporting sample-and-hold functionality and sweep mode for automated sequential conversion - essential for multi-sensor monitoring in appliances and industrial controls.
What is the purpose of the background operation (BGO) function in the R5F21388SDFP data flash?
The background operation (BGO) function allows the R5F21388SDFP to execute program code from flash memory while simultaneously erasing or programming data flash blocks. This enables seamless firmware updates, parameter storage, or calibration data writes without halting real-time control tasks - a critical capability for uninterrupted operation in consumer and industrial systems.
Is the R5F21388SDFP pin-compatible with other devices in the R8C/38T-A Group?
Yes, all members of the R8C/38T-A Group, including R5F21388SDFP, share the identical 80-pin LQFP (PLQP0080KB-A) package and pin assignment. Memory variants (e.g., R5F2138ASDFP) and temperature grades (N/D) maintain full pin-to-pin compatibility, enabling scalable design reuse across product tiers without PCB redesign.
R5F21388SDFP#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:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 6K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 20x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F21388SDFP#V0 FAQ
1.How can I place an order for R5F21388SDFP#V0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21388SDFP#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 R5F21388SDFP#V0 reliable?
The price and inventory of R5F21388SDFP#V0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21388SDFP#V0 is usually 5 days.
3.What payment methods are accepted for R5F21388SDFP#V0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21388SDFP#V0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21388SDFP#V0?
R5F21388SDFP#V0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21388SDFP#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 R5F21388SDFP#V0?
For technical support, including R5F21388SDFP#V0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21388SDFP#V0 requirements.
6.How does Aetrix verify that R5F21388SDFP#V0 is sourced from the original manufacturer or authorized distributors?
All R5F21388SDFP#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 R5F21388SDFP#V0 meets industry standards.
7.What is the process for return or replacement of R5F21388SDFP#V0?
All R5F21388SDFP#V0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21388SDFP#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 R5F21388SDFP#V0 part is unused and in its original packaging.
Return procedure for R5F21388SDFP#V0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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