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Renesas R5F21324MDSP#U0
- Part No.:
- R5F21324MDSP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F21324MDSP#U0.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,473
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Product details
Overview
R5F21324MDSP#U0 from Renesas Electronics is a 16-bit R8C CPU core microcontroller with 16 KB flash program ROM, 1.5 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), features integrated LIN hardware module, 10-bit A/D converter (4 channels), and real-time clock (Timer RE), targeting embedded control in consumer appliances and industrial interfaces.
For engineers reviewing the R5F21324MDSP#U0 datasheet, R5F21324MDSP#U0 pinout, R5F21324MDSP#U0 application, or R5F21324MDSP#U0 equivalent, key selection considerations include its -40°C to +85°C D-version temperature rating, 20-pin LSSOP package (PLSP0020JB-A), on-chip debug capability, and hardware LIN support via Timer RA and UART0.
Technical Context
The R5F21324MDSP#U0 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 integrates four independent clock sources - XIN/XOUT (up to 20 MHz), XCIN/XCOUT (32 kHz), high-speed on-chip oscillator (adjustable), and low-speed on-chip oscillator - with selectable frequency dividers (1/2/4/8/16) and oscillation stop detection. Power modes include standard, wait (3.5 µA @ 3.0 V, 32 kHz), and stop (2.0 µA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions, 50 ns min instruction time @ 20 MHz |
| Memory | 16 KB flash program ROM, 1.5 KB RAM, 4 KB data flash (BGO supported) |
| Operating Temp | -40°C to +85°C (D version), validated for extended industrial environments |
| Supply Voltage | 1.8–5.5 V; supports dual-voltage operation with AVCC/AVSS for analog subsystem |
| A/D Converter | 10-bit resolution × 4 channels with sample-and-hold and sweep mode |
| Timers | Timer RA (8-bit), RB (8-bit PWM), RC (16-bit w/ 4 capture/compare), RE (real-time clock) |
| Serial Interfaces | UART0 (LIN-capable), UART2 (I²C mode), SSU/I²C-bus (shared), hardware LIN module |
Pinout & Package
Package: 20-pin LSSOP (PLSP0020JB-A, 0.65 mm pitch), surface-mount, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1_0 / AN8 / LVCMP1 / KI0 | Analog input / comparator A input / key interrupt | Configurable as 10-bit A/D channel 8, comparator A input 1, or key interrupt 0 |
| P1_1 / AN9 / LVCMP2 / KI1 | Analog input / comparator A input / key interrupt | Configurable as 10-bit A/D channel 9, comparator A input 2, or key interrupt 1 |
| P1_2 / AN10 / LVREF / KI2 | Analog input / comparator reference / key interrupt | Provides analog input 10 or comparator A reference voltage source |
| P1_3 / AN11 / LVCOUT1 / KI3 | Analog input / comparator output / key interrupt | Supports A/D channel 11 or comparator A output 1; also key interrupt 3 |
| P1_4 / TXD0 / TRCCLK | UART0 transmit / timer RC clock input | Dual-function pin: serial data out (UART0) or external clock input for Timer RC |
| P1_5 / INT1 / RXD0 / TRAIO | Interrupt / UART0 receive / timer RA I/O | Accepts external interrupt 1, UART0 serial data in, or timer RA I/O signal |
| P1_6 / LVCOUT2 / IVREF1 / CLK0 | Comparator A output / comparator B reference / clock out | Delivers comparator A output 2, supplies reference to comparator B, or outputs CLK0 |
| P1_7 / IVCMP1 / INT1 / TRAIO | Comparator B input / interrupt / timer RA I/O | Accepts comparator B analog input 1, interrupt 1, or timer RA I/O (shared with P1_5) |
| P3_3 / IVCMP3 / INT3 / SCS | Comparator B input / interrupt / SSU chip select | Enables analog monitoring, external interrupt 3, or SSU slave select function |
| P3_4 / IVREF3 / SSI / RXD2/SCL2/TXD2/SDA2/TRCIOC | Comparator B reference / SSU data / multi-function serial | Supplies comparator B reference 3 or serves as SSU data I/O or UART2/I²C/Timer RC I/O |
| P3_5 / TRCIOD / CLK2 / SSCK / SCL | Timer RC I/O / clock / SSU clock / I²C clock | Configurable as Timer RC I/O, SSU clock, I²C clock, or external clock input CLK2 |
| P3_7 / SDA / SSO / TRAO / RXD2/SCL2/TXD2/SDA2 | I²C data / SSU output / timer RA output / multi-serial | Functions as I²C data line, SSU serial output, timer RA output, or UART2/I²C shared pin |
| P4_2 | Analog reference input | Dedicated VREF input for A/D converter; not configurable as GPIO |
| P4_5 / ADTRG / INT0 / RXD2/SCL2 | A/D trigger / interrupt / UART2/I²C input | Starts A/D conversion on edge, accepts INT0, or receives UART2/I²C serial data |
| P4_6 / XIN / XCIN | Crystal/clock input | Primary crystal input for main system clock (XIN) or 32 kHz RTC clock (XCIN) |
| P4_7 / XOUT / XCOUT | Crystal/clock output | Crystal oscillator output for main clock (XOUT) or 32 kHz clock (XCOUT) |
| RESET | Active-low reset input | Hardware reset assertion resets CPU, peripherals, and registers; level-sensitive |
| MODE | Mode selection input | Must be pulled high (VCC via resistor) to enable single-chip operation mode |
| VCC / AVCC | Power supply / analog power | VCC powers digital logic; AVCC powers A/D and comparators - requires decoupling |
| VSS / AVSS | Ground / analog ground | VSS is digital ground; AVSS is analog ground - separate routing recommended |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Enables concurrent flash programming/erasure while CPU executes code from RAM or other ROM |
| Hardware LIN Module | Full LIN 2.0/2.1 compliance via dedicated UART0 + Timer RA; no software protocol stack overhead |
| Data Flash with ECC | 4 KB (1 KB × 4 blocks) with error correction; 10,000 erase/write cycles for robust parameter storage |
| Low-Power Modes | Wait mode (3.5 µA @ 32 kHz) and stop mode (2.0 µA) enable battery-powered operation |
| Integrated Analog Subsystem | 10-bit A/D (4 ch), two comparators (A/B), internal reference, and VREF pin for precision sensing |
| Multi-Clock Flexibility | Four independent clocks with automatic failover detection and programmable prescalers for timing resilience |
Applications
| Home Appliance Control | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Microcontroller in washing machine main board managing motor drive, water valve, temperature sensing, and user interface. IC Role / Device Role / Timing Role: Central controller executing real-time motor commutation, A/D sampling of NTC thermistors, and LIN communication with display module. Use Value: Hardware LIN reduces MCU loading vs. bit-banged protocols; BGO enables field-upgradable firmware without halting operation. |
Use Scenario: Compact sensor node in HVAC system measuring ambient temperature, humidity, and airflow pressure. IC Role / Device Role / Timing Role: Signal acquisition unit converting analog sensor outputs via 10-bit A/D, performing local calibration, and transmitting data over UART. Use Value: Integrated 10-bit A/D with sample-and-hold eliminates external ADC; low-power stop mode extends battery life in wireless nodes. |
| Audio Equipment Remote Control | Office Equipment Motor Driver |
|
Use Scenario: IR remote receiver and command decoder in AV receiver, interpreting NEC/RC-5 codes and controlling audio DSP settings. IC Role / Device Role / Timing Role: Dedicated key input interrupt (KI0–KI3) and real-time clock (Timer RE) for precise IR pulse timing and sleep/wake scheduling. Use Value: Seven key interrupt inputs allow direct matrix scanning; 89-instruction R8C core delivers fast decode latency under 100 µs. |
Use Scenario: Paper feed and tray positioning controller in laser printer, coordinating stepper motor sequencing and paper jam detection. IC Role / Device Role / Timing Role: Precision timing generator using Timer RB's programmable waveform mode to produce microstepping pulses for driver ICs. Use Value: 8-bit PWM-capable Timer RB provides accurate duty-cycle control; high-current drive ports directly interface with optocouplers and logic-level MOSFETs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21324MNSP | N-version (-20°C to +85°C); identical memory, peripherals, and pinout | Suitable for commercial indoor equipment where extended temperature range is unnecessary | Select when operating ambient stays above -20°C and cost sensitivity outweighs industrial qualification needs |
| R5F21322MDSP | D-version with 8 KB program ROM, 1 KB RAM, same 20-pin LSSOP package | Lower memory capacity suits simpler control tasks like basic appliance timers or LED drivers | Choose when firmware size < 8 KB and full 16 KB headroom is not required; retains same thermal and LIN capabilities |
Compared with R5F21324MDSP#U0, the R5F21324MNSP offers identical functionality at lower temperature grade, while R5F21322MDSP reduces memory footprint without sacrificing D-version reliability-both maintain pin compatibility and hardware LIN support for seamless migration.
Availability
R5F21324MDSP#U0 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor interface, and office equipment motor driver applications requiring stable component supply across long production lifecycles.
Supply support for R5F21324MDSP#U0 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/32M Group, including R5F21324MDSP#U0, was designed for cost-sensitive, low-power embedded control in consumer electronics and industrial equipment with integrated analog and communication peripherals.
FAQ
What is the operating temperature range of the R5F21324MDSP#U0?
The R5F21324MDSP#U0 is a D-version device rated for -40°C to +85°C ambient operation, making it suitable for industrial and automotive-adjacent applications where extended thermal stability is required. This specification is verified per Renesas' official datasheet R01DS0024EJ0100 and applies across all operating modes including wait and stop.
Does the R5F21324MDSP#U0 support hardware LIN communication?
Yes, the R5F21324MDSP#U0 integrates a dedicated hardware LIN module compliant with LIN 2.0/2.1 standards, implemented using UART0 and Timer RA. This eliminates software protocol overhead and ensures deterministic timing for automotive body electronics and appliance sub-systems requiring LIN bus connectivity.
What is the maximum clock frequency supported by the R5F21324MDSP#U0?
The R5F21324MDSP#U0 supports a maximum external crystal frequency of 20 MHz at VCC = 2.7–5.5 V, delivering a minimum instruction execution time of 50 ns. At lower supply voltages (1.8–5.5 V), it operates up to 5 MHz with 200 ns minimum instruction time, ensuring reliable performance across wide voltage ranges.
How much data flash memory does the R5F21324MDSP#U0 include, and what is its endurance?
The R5F21324MDSP#U0 includes 4 KB of data flash memory organized as four 1 KB blocks, supporting background operation (BGO). Its specified endurance is 10,000 erase/write cycles, enabling robust storage of calibration data, configuration parameters, or firmware update staging in field-deployed systems.
Is the R5F21324MDSP#U0 pin-compatible with other devices in the R8C/32M Group?
Yes, all R8C/32M Group devices-including R5F21324MDSP#U0, R5F21322MDSP, and R5F21324MNSP-share the identical 20-pin LSSOP package (PLSP0020JB-A) and fully compatible pinout. Peripheral register mapping and I/O functionality are consistent, allowing drop-in replacement within the same memory and temperature grade constraints.
R5F21324MDSP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Series:
- R8C/3x/32M
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- 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:
- 15
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 1.5K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 4x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F21324MDSP#U0 FAQ
1.How can I place an order for R5F21324MDSP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21324MDSP#U0 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 R5F21324MDSP#U0 reliable?
The price and inventory of R5F21324MDSP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21324MDSP#U0 is usually 5 days.
3.What payment methods are accepted for R5F21324MDSP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21324MDSP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21324MDSP#U0?
R5F21324MDSP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21324MDSP#U0 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 R5F21324MDSP#U0?
For technical support, including R5F21324MDSP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21324MDSP#U0 requirements.
6.How does Aetrix verify that R5F21324MDSP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F21324MDSP#U0 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 R5F21324MDSP#U0 meets industry standards.
7.What is the process for return or replacement of R5F21324MDSP#U0?
All R5F21324MDSP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21324MDSP#U0, 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 R5F21324MDSP#U0 part is unused and in its original packaging.
Return procedure for R5F21324MDSP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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