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Renesas R5F21356MDFP#50
- Part No.:
- R5F21356MDFP#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 52-LQFP
- Datasheet:
-
R5F21356MDFP#50.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 52LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,440
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Product details
Overview
R5F21356MDFP#50 from Renesas Electronics is a 16-bit R8C CPU core MCU with 32 KB flash program ROM, 2.5 KB RAM, and 4 KB data flash (1 KB × 4 blocks) supporting background operation (BGO). It operates at up to 20 MHz (VCC = 2.7–5.5 V), integrates dual 8-bit timers (RA/RB), dual 16-bit timers (RC/RD), real-time clock (RE), 10-bit × 12-channel ADC, dual 8-bit DACs, LIN hardware module, and I²C/UART/SSU serial interfaces. It targets embedded control in consumer audio equipment and office automation devices.
For engineers reviewing the R5F21356MDFP#50 datasheet, R5F21356MDFP#50 pinout, R5F21356MDFP#50 application, or R5F21356MDFP#50 equivalent, key selection considerations include its -40°C to +85°C industrial temperature grade, 52-pin LQFP package (PLQP0052JA-A), integrated voltage detection (3-level), low-power wait/stop modes (down to 2.0 µA), and hardware LIN compliance using UART0 and timer RA.
Technical Context
The R5F21356MDFP#50 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 fixed interrupt vector table at 0FFDCh–0FFFFh and data flash at 03000h–03FFFh.
It features four independent clock sources: XIN (up to 20 MHz crystal/resonator), XCIN (32 kHz crystal), high-speed on-chip oscillator (adjustable), and low-speed on-chip oscillator - all with selectable frequency dividers (1/2/4/8/16) and oscillation stop detection. Peripheral control uses dedicated SFRs mapped to 00000h–002FFh and 02C00h–02FFFh.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions, 16×16→32-bit multiplier, and MAC support for efficient signal/control math. |
| Memory | 32 KB flash program ROM, 2.5 KB RAM, 4 KB data flash (1 KB × 4 blocks) with BGO for firmware updates without halting execution. |
| Operating Voltage | 1.8–5.5 V supply range; supports 5 MHz operation down to 1.8 V and 20 MHz operation from 2.7 V, enabling flexible power design. |
| Temperature Grade | D version rated for -40°C to +85°C ambient, qualified for industrial and extended-temperature consumer applications. |
| Power Consumption | Typ. 6.5 mA @ 5.0 V/20 MHz; 3.5 µA in wait mode (32 kHz XCIN); 2.0 µA in stop mode - critical for battery-backed systems. |
| Peripherals | 10-bit × 12-channel ADC with sample-and-hold and sweep mode; dual 8-bit DACs; hardware LIN (UART0 + timer RA); UART0/1/2, I²C, SSU, 14-bit watchdog timer. |
| Package | 52-pin LQFP (PLQP0052JA-A), 10 mm × 10 mm, 0.65 mm pitch - compatible with standard surface-mount assembly processes. |
Pinout & Package
52-pin LQFP package (PLQP0052JA-A), 10 mm × 10 mm body, 0.65 mm lead pitch. Pin 1 marked by dot or notch; thermal pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / AVCC | Power supply input | Main digital supply (1.8–5.5 V); AVCC powers analog peripherals (ADC/DAC/comparators) - requires local decoupling. |
| VSS / AVSS | Ground reference | Digital ground; AVSS is dedicated analog ground - separation improves ADC/DAC SNR and noise immunity. |
| RESET | Active-low reset input | Asynchronous reset assertion forces CPU restart; internal pull-up ensures reliable release after power-up. |
| XIN / XOUT | High-frequency clock interface | Connects to external crystal/resonator (up to 20 MHz); XOUT can accept external clock source if XIN left open. |
| XCIN / XCOUT | Low-frequency clock interface | Supports 32 kHz crystal for RTC and low-power modes; XCOUT output enables clock distribution to other ICs. |
| P0_0–P0_7 | CMOS I/O port with analog functions | 8-bit bidirectional port; pins double as AN0–AN7, DA0/DA1, TREO, TRCIOx - configurable per application via SFRs. |
| INT0–INT4 | External interrupt inputs | Dedicated edge-sensitive inputs (INT0–INT4); INT0 tied to timers RB/RC/RD for precise event capture and timing triggers. |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Data flash erasure/programming proceeds concurrently with CPU execution - enables seamless firmware field updates. |
| Hardware LIN Module | Full LIN 2.0/2.1 compliance implemented in silicon using UART0 and timer RA - eliminates software protocol stack overhead and timing jitter. |
| Multi-source Clock System | Four independent clock generators (XIN, XCIN, high-speed/low-speed on-chip oscillators) with automatic failover and stop detection - ensures robust timing under varying conditions. |
| Voltage Detection Circuit | Three-level voltage monitor (VDD detect + two user-selectable thresholds) with reset and interrupt outputs - provides early warning of brown-out before functional failure. |
| Low-Power Operating Modes | Wait mode (3.5 µA @ 32 kHz) and stop mode (2.0 µA) retain RAM and register state while disabling clocks - extends battery life in portable devices. |
Applications
| Audio Equipment Control | Office Automation Devices |
|---|---|
Use Scenario: Digital audio receiver with volume, tone, and input source control, plus display backlight management. IC Role / Device Role / Timing Role: Main system controller executing UI logic, processing IR/key inputs, driving LED/LCD segments, and managing audio codec registers via I²C. Use Value: Integrated 10-bit ADC reads potentiometer positions; dual DACs generate analog bias voltages; LIN interface enables communication with remote amplifier modules. | Use Scenario: Automatic document feeder (ADF) subsystem in multifunction printers, requiring motor sequencing and paper jam detection. IC Role / Device Role / Timing Role: Dedicated motion controller coordinating stepper motor phases, reading optical sensors, and reporting status over UART to main SoC. Use Value: Timer RD's complementary PWM mode drives H-bridge drivers; 12-channel ADC monitors current sense and temperature; hardware LIN links to main controller for diagnostics. |
| Consumer Appliance Interface | Industrial Panel Meters |
Use Scenario: Touch-sensitive front panel for microwave oven or washing machine with real-time cycle monitoring and safety interlocks. IC Role / Device Role / Timing Role: Human-machine interface (HMI) processor handling key scan, display update, buzzer tone generation, and safety-critical door lock control. Use Value: Key input interrupts (KI0–KI3) enable low-latency response; real-time clock (timer RE) tracks cooking time; voltage detection prevents erratic behavior during line dips. | Use Scenario: DIN-rail mounted panel meter measuring AC voltage/current with local display and Modbus RTU communication. IC Role / Device Role / Timing Role: Data acquisition and protocol gateway - samples analog inputs, computes RMS values, formats Modbus frames, and transmits via UART2. Use Value: 10-bit ADC with sample-and-hold captures fast transients; UART2 supports full-duplex RS-485 with RTS/CTS flow control; D version rating ensures reliability in factory environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21356MNFP | Same core, memory, and peripherals but N version (-20°C to +85°C) instead of D version. | Suitable for commercial-grade consumer products where extended temperature range is unnecessary. | Select R5F21356MNFP only when operating ambient stays above -20°C; otherwise R5F21356MDFP#50 is required for industrial use. |
| R5F21355MDFP | Identical D-version temperature grade and package, but reduced 24 KB program ROM and 2 KB RAM. | Fits simpler control tasks with smaller firmware footprint and lower RAM usage, e.g., basic sensor nodes or single-function remotes. | Choose R5F21355MDFP when application code size is under 24 KB and RAM needs are ≤2 KB - reduces cost without sacrificing temperature or peripheral compatibility. |
Compared with R5F21356MNFP and R5F21355MDFP, the R5F21356MDFP#50 uniquely combines industrial temperature qualification (-40°C to +85°C) with 32 KB program ROM and 2.5 KB RAM - making it optimal for feature-rich, thermally demanding embedded controllers where code growth headroom and environmental robustness are critical.
Availability
R5F21356MDFP#50 is available at Aetrix Electronics and suitable for audio equipment control, office automation devices, consumer appliance interface, and industrial panel meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R5F21356MDFP#50 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, power, and SoC solutions for automotive, industrial, and IoT markets.
The R8C/35M Group, including R5F21356MDFP#50, was designed for cost-sensitive, low-power embedded control in consumer electronics - emphasizing integration of analog peripherals (ADC/DAC/comparators), communication interfaces (LIN/I²C/UART), and robust clock/power management.
FAQ
What is the maximum operating frequency of the R5F21356MDFP#50 and under what voltage conditions?
The R5F21356MDFP#50 achieves a maximum operating frequency of 20 MHz when supplied with VCC between 2.7 V and 5.5 V. At lower voltages (1.8–5.5 V), it supports up to 5 MHz operation - enabling flexible power scaling for battery-powered or energy-efficient designs. This dual-frequency capability is defined in the official Renesas datasheet R01DS0021EJ0100.
Does the R5F21356MDFP#50 support hardware LIN communication, and how is it implemented?
Yes, the R5F21356MDFP#50 includes a dedicated hardware LIN module compliant with LIN 2.0/2.1 standards. It is implemented using UART0 for serial framing and timer RA for precise baud rate generation and synchronization - eliminating software-based bit-banging and ensuring deterministic timing critical for automotive and industrial networks.
What are the data flash capabilities of the R5F21356MDFP#50, and does it support background operation?
The R5F21356MDFP#50 includes 4 KB of data flash organized as four 1 KB blocks, rated for 10,000 erase/write cycles. Crucially, it supports Background Operation (BGO), allowing flash programming and erasure to occur concurrently with CPU code execution - essential for over-the-air updates and runtime parameter storage without system interruption.
How many analog-to-digital converter channels does the R5F21356MDFP#50 provide, and what is their resolution?
The R5F21356MDFP#50 integrates a single 10-bit successive-approximation ADC with 12 input channels (AN0–AN11). It includes sample-and-hold functionality and sweep mode for automated sequential conversion - delivering sufficient precision for sensor interfacing, power monitoring, and control loop feedback in consumer and industrial applications.
What is the operating temperature range specified for the R5F21356MDFP#50, and how is it indicated in the part number?
The R5F21356MDFP#50 is the D-version variant, explicitly rated for an operating ambient temperature range of -40°C to +85°C. This is encoded in the part number suffix "MDFP", where "D" denotes the industrial temperature grade - distinguishing it from the N-version (e.g., R5F21356MNFP) rated for -20°C to +85°C.
R5F21356MDFP#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 52-LQFP
- Series:
- R8C/3x/35M
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 47
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 2.5K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 12x10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F21356MDFP#50 FAQ
1.How can I place an order for R5F21356MDFP#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21356MDFP#50 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 R5F21356MDFP#50 reliable?
The price and inventory of R5F21356MDFP#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21356MDFP#50 is usually 5 days.
3.What payment methods are accepted for R5F21356MDFP#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21356MDFP#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21356MDFP#50?
R5F21356MDFP#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21356MDFP#50 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 R5F21356MDFP#50?
For technical support, including R5F21356MDFP#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21356MDFP#50 requirements.
6.How does Aetrix verify that R5F21356MDFP#50 is sourced from the original manufacturer or authorized distributors?
All R5F21356MDFP#50 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 R5F21356MDFP#50 meets industry standards.
7.What is the process for return or replacement of R5F21356MDFP#50?
All R5F21356MDFP#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21356MDFP#50, 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 R5F21356MDFP#50 part is unused and in its original packaging.
Return procedure for R5F21356MDFP#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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