My Inquiry
My Account
Renesas R5F21276SDFP#X6
- Part No.:
- R5F21276SDFP#X6
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
R5F21276SDFP#X6.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,461
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
R5F21276SDFP#X6 from Renesas Electronics is a 16-bit single-chip microcontroller in the R8C/27 Group, featuring 32 KB flash program memory, 1.5 KB RAM, and dual 1 KB data flash blocks. It integrates an R8C CPU core, 12-channel 10-bit A/D converter, hardware LIN module (using Timer RA and UART0), two UARTs, I²C interface, and real-time clock functionality via Timer RE. It targets automotive body electronics and industrial control systems requiring extended temperature operation.
For engineers reviewing the R5F21276SDFP#X6 datasheet, R5F21276SDFP#X6 pinout, R5F21276SDFP#X6 application, or R5F21276SDFP#X6 equivalent, key selection criteria include its -40°C to +85°C operating range (D version), 32-pin LQFP package (PLQP0032GB-A), on-chip data flash endurance (10,000 erase/write cycles), LIN bus compliance, and low-power stop mode current (0.7 µA at 3.0 V).
Technical Context
The R5F21276SDFP#X6 implements the R8C CPU core with 89 fundamental instructions and executes at 50 ns minimum instruction time (20 MHz XIN, 3.0–5.5 V). Its memory architecture includes separate 1 Mbyte address space for code and data, with fixed interrupt vector table at 0FFDCh–0FFFFh and SFRs mapped to 00000h–002FFh.
Peripheral integration centers on mixed-signal control: Timer RC provides 16-bit input capture/output compare; Timer RE delivers real-time clock and compare match (D version); UART0 enables hardware LIN physical layer support; and the 10-bit A/D converter supports simultaneous sampling across 12 analog inputs with internal reference voltage (VREF) input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit CISC core with register bank switching and 20-bit PC for 1 Mbyte addressing |
| Flash Memory | 32 KB program ROM + 2 × 1 KB data flash blocks (10,000 erase/write cycles) |
| RAM | 1.5 KB on-chip SRAM for variables, stack, and subroutine context storage |
| A/D Converter | 10-bit resolution, 12 input channels (AN0–AN11), programmable sample-and-hold timing |
| Operating Temperature | -40°C to +85°C (D version), validated for automotive cabin and industrial control environments |
| Supply Voltage | 2.2 V to 5.5 V (full-speed operation at 5 MHz–20 MHz depending on VCC) |
| Low-Power Modes | Stop mode draws 0.7 µA at 3.0 V; wait mode draws 2.0 µA with 32 kHz XCIN active |
Pinout & Package
Package: 32-pin molded-plastic LQFP (PLQP0032GB-A, 7 mm × 7 mm, 0.8 mm pitch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual power domains: VCC (digital), AVCC (analog) require separate decoupling; AVSS must be connected to VSS |
| XIN / XOUT | External crystal oscillator interface | Supports 5–20 MHz crystals; internal feedback resistor enables direct connection without external components |
| XCIN / XCOUT | 32 kHz real-time clock oscillator | Available only in D/N versions; enables low-power RTC operation independent of main system clock |
| P0_0–P0_7, P1_0–P1_7, etc. | Configurable CMOS I/O ports | 25 general-purpose I/O pins + 3 dedicated input-only pins (P4_2, P4_6, P4_7); software-selectable pull-up and direction per pin |
| AN0–AN11 | Analog input channels | 12 dedicated ADC inputs mapped across ports P0–P1; share pins with digital I/O but require analog input configuration |
| UART0 / UART1 | Asynchronous serial interfaces | UART0 supports hardware LIN transceiver function (SAE J2602 compliant); UART1 is general-purpose with selectable I/O pins |
| SCL / SDA | I²C bus interface | Standard-mode (100 kbps) I²C master/slave interface with open-drain outputs and internal pull-up option |
| TREO / TRCIOx | Timer output / capture pins | TREO provides RTC output; TRCIOA–TRCIOD support PWM generation, input capture, and quadrature decoding |
Key Features
| Feature | Design Value |
|---|---|
| Hardware LIN Module | Integrated LIN 2.0/SAE J2602 physical layer using UART0 and Timer RA - eliminates external transceiver in body control nodes |
| Dual Data Flash Blocks | Two independent 1 KB data flash blocks enable wear-leveling and background reprogramming while application runs from main flash |
| Real-Time Clock (RTC) | Timer RE with 32 kHz XCIN input provides calendar/timekeeping with compare-match interrupt - no external RTC IC required |
| 12-Channel 10-Bit ADC | Simultaneous sampling across all 12 channels with programmable conversion timing - suitable for motor current sensing and sensor fusion |
| Low-Voltage Operation | Full functionality down to 2.2 V (5 MHz max) supports battery-backed or wide-input industrial power supplies |
Applications
| Automotive Body Control | Industrial Sensor Node |
|---|---|
Use Scenario: Central body controller managing door locks, window lifts, mirror adjustment, and interior lighting in passenger vehicles. IC Role / Device Role / Timing Role: Primary MCU executing LIN slave protocol, reading switch inputs, driving LED indicators, and performing ADC-based potentiometer position sensing. Use Value: Hardware LIN reduces BOM cost and EMI vs. discrete transceivers; data flash enables field-updatable calibration tables without halting operation. |
Use Scenario: Standalone environmental monitoring unit measuring temperature, humidity, and air quality in factory HVAC ducts. IC Role / Device Role / Timing Role: Sensor fusion hub acquiring analog signals via 12-channel ADC, timestamping readings with RTC, and transmitting over UART to gateway. Use Value: Integrated RTC eliminates external timekeeping IC; low-power stop mode extends battery life in wireless variants. |
| Home Appliance Motor Control | Office Equipment Power Management |
Use Scenario: Brushless DC motor driver in premium washing machines with variable speed profiles and vibration detection. IC Role / Device Role / Timing Role: Real-time motor commutation controller using Timer RC for precise PWM timing and ADC for current sensing feedback. Use Value: 16-bit Timer RC with input capture enables accurate back-EMF zero-crossing detection; 10-bit ADC resolves torque ripple <1%. |
Use Scenario: Power sequencer and fault monitor in multifunction printers managing high-voltage fuser, laser diode, and paper feed subsystems. IC Role / Device Role / Timing Role: System supervisor monitoring rail voltages, thermal sensors, and interlock switches while coordinating safe power-up/down sequences. Use Value: On-chip voltage detection circuit and watchdog timer provide autonomous safety response; 32-pin LQFP fits compact PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21276SNFP | N version: -20°C to +85°C operating range; identical flash/RAM/peripherals | Suitable for consumer-grade office equipment or home appliances without extended temperature requirements | Select when ambient temperature stays above -20°C and cost sensitivity outweighs automotive qualification needs. |
| R5F21276JFP | J version: -40°C to +85°C, same package and memory, but lacks XCIN/XCOUT RTC oscillator pins | Used in automotive infotainment head units where RTC is handled externally or not required | Choose when real-time clock functionality is unnecessary and full D-version feature set is not needed. |
Compared with R5F21276SNFP and R5F21276JFP, the R5F21276SDFP#X6 uniquely combines automotive-grade temperature range (-40°C to +85°C), integrated 32 kHz RTC oscillator (XCIN/XCOUT), and dual data flash blocks - making it optimal for body electronics requiring field-upgradable firmware and autonomous timekeeping.
Availability
R5F21276SDFP#X6 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor nodes, home appliance motor controllers, and office equipment power management systems requiring stable component supply across multi-year production cycles.
Supply support for R5F21276SDFP#X6 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 formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power devices for automotive, industrial, and IoT markets.
The R8C/27 Group, including R5F21276SDFP#X6, was designed for cost-sensitive, reliability-critical embedded control in automotive body electronics and industrial automation - emphasizing integrated peripherals, low-power operation, and long-term supply stability.
FAQ
What is the maximum operating frequency and corresponding supply voltage for R5F21276SDFP#X6?
The R5F21276SDFP#X6 achieves a minimum instruction execution time of 50 ns at 20 MHz XIN frequency, requiring VCC = 3.0 V to 5.5 V. At lower frequencies - 10 MHz (100 ns) or 5 MHz (200 ns) - it supports reduced supply voltages down to 2.2 V, enabling flexible power design in battery-powered or wide-input applications.
Does R5F21276SDFP#X6 support hardware LIN communication, and how is it implemented?
Yes, R5F21276SDFP#X6 implements a hardware LIN module compliant with SAE J2602 using UART0 and Timer RA. This integrated solution handles LIN physical layer signaling, break detection, sync field processing, and checksum calculation - eliminating the need for an external LIN transceiver in body control applications.
How many data flash blocks does R5F21276SDFP#X6 include, and what is their endurance rating?
R5F21276SDFP#X6 includes two independent 1 KB data flash blocks, each rated for 10,000 erase/write cycles. This allows robust firmware update mechanisms, parameter storage with wear leveling, and background programming without halting application execution from main program flash.
What is the role of XCIN/XCOUT pins on R5F21276SDFP#X6, and are they available in all versions?
XCIN and XCOUT support a 32 kHz crystal oscillator for Timer RE's real-time clock function. These pins are available only in N and D versions (including R5F21276SDFP#X6), enabling low-power timekeeping during wait/stop modes. They are absent in J and K versions, which rely on alternate clock sources.
Can R5F21276SDFP#X6 operate in ultra-low-power stop mode, and what is the typical current draw?
Yes, R5F21276SDFP#X6 supports stop mode with typical current consumption of 0.7 µA at VCC = 3.0 V. In this mode, the CPU and most peripherals halt while retaining RAM content and allowing wake-up via external interrupt or RTC alarm - ideal for battery-backed sensor nodes and remote controls.
R5F21276SDFP#X6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-LQFP
- Series:
- R8C/2x/27
- Packaging:
- Tape & Reel (TR)
- 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:
- LED, POR, Voltage Detect, WDT
- Number of I/O:
- 25
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 1.5K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.2V ~ 5.5V
- Data Converters:
- A/D 12x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F21276SDFP#X6 FAQ
1.How can I place an order for R5F21276SDFP#X6 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21276SDFP#X6 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 R5F21276SDFP#X6 reliable?
The price and inventory of R5F21276SDFP#X6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21276SDFP#X6 is usually 5 days.
3.What payment methods are accepted for R5F21276SDFP#X6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21276SDFP#X6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21276SDFP#X6?
R5F21276SDFP#X6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21276SDFP#X6 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 R5F21276SDFP#X6?
For technical support, including R5F21276SDFP#X6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21276SDFP#X6 requirements.
6.How does Aetrix verify that R5F21276SDFP#X6 is sourced from the original manufacturer or authorized distributors?
All R5F21276SDFP#X6 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 R5F21276SDFP#X6 meets industry standards.
7.What is the process for return or replacement of R5F21276SDFP#X6?
All R5F21276SDFP#X6 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21276SDFP#X6, 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 R5F21276SDFP#X6 part is unused and in its original packaging.
Return procedure for R5F21276SDFP#X6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F21276SDFP#X6 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…
