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Renesas R5F21324ANSP#U1
- Part No.:
- R5F21324ANSP#U1
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F21324ANSP#U1.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,088
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Product details
Overview
R5F21324ANSP#U1 from Renesas Electronics is a 16-bit R8C/32A Group microcontroller featuring an R8C CPU core, 16 KB program flash ROM, 1.5 KB RAM, and 4 KB data flash (1 KB × 4 blocks) with background operation (BGO). It operates at up to 20 MHz (VCC = 2.7–5.5 V), supports 20-pin LSSOP packaging, and integrates UART0/UART2, I²C, LIN, 10-bit × 4-channel ADC, and four 8-/16-bit timers for embedded control in consumer appliances and office equipment.
For engineers reviewing the R5F21324ANSP#U1 datasheet, R5F21324ANSP#U1 pinout, R5F21324ANSP#U1 application, or R5F21324ANSP#U1 equivalent, this page delivers verified technical identity, validated pin functions, confirmed operating modes (wait/stop), real-time clock (Timer RE), and precise peripheral mapping - all aligned to Renesas' REJ03B0229-0100 Rev.1.00 specification.
Technical Context
The R5F21324ANSP#U1 implements the R8C CPU core with 89 fundamental instructions, 16×16→32-bit hardware multiplier, and 20-bit address space (1 Mbyte). Its memory architecture separates 16 KB program ROM (0C000h–0FFFFh), 1.5 KB RAM (00400h–009FFh), and 4 KB data flash (03000h–03FFFh), all supporting BGO for concurrent execution and reprogramming.
Peripheral integration includes UART0/UART2 (with I²C mode and multiprocessor support), SSU shared with I²C-bus, hardware LIN via Timer RA + UART0, 10-bit ADC with sample-and-hold and sweep mode, dual comparators (A/B), and voltage detection with selectable levels - all managed through dedicated SFRs mapped to 0000h–02FFFh.
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, 16×16→32-bit multiplier |
| Memory | 16 KB program flash (ROM), 1.5 KB RAM, 4 KB data flash (1 KB × 4 blocks) with BGO |
| Operating Voltage | 1.8–5.5 V; supports dual-frequency operation: 20 MHz (2.7–5.5 V) or 5 MHz (1.8–5.5 V) |
| Power Consumption | Typ. 6.5 mA @ 5.0 V/20 MHz; 3.5 µA @ 3.0 V/wait mode (32 kHz); 2.0 µA @ 3.0 V/stop mode |
| Timers | Timer RA (8-bit), RB (8-bit PWM), RC (16-bit w/4 capture/compare), RE (8-bit real-time clock) |
| Analog Peripherals | 10-bit × 4-channel ADC with sample-and-hold, sweep mode, and external trigger (ADTRG) |
| Serial Interfaces | UART0, UART2 (I²C mode + multiprocessor), SSU (shared with I²C), hardware LIN module |
| Package & Temp | 20-pin LSSOP (PLSP0020JB-A, 0.65 mm pitch); industrial grade: −20°C to +85°C (N version) |
Pinout & Package
Package: 20-pin LSSOP (PLSP0020JB-A, 0.65 mm pin pitch), lead-free, RoHS-compliant, surface-mountable with standard reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (P4_2) | VREF input | Analog reference voltage input for A/D converter; requires external decoupling capacitor |
| 2 (MODE) | Mode selection | Must be pulled high to VCC via resistor to enable single-chip operation |
| 3 (RESET) | Active-low reset | Asynchronous reset input; low pulse ≥ 100 ns initiates hardware reset sequence |
| 4 (XOUT/XCOUT) | Crystal oscillator output | Drives external crystal/resonator for XIN or XCIN clock circuits; open-drain capable |
| 5 (VSS/AVSS) | Digital/analog ground | Common return path; AVSS must be decoupled separately from VSS for ADC noise immunity |
| 6 (XIN/XCIN) | Crystal oscillator input | Accepts 20 MHz ceramic resonator (XIN) or 32 kHz crystal (XCIN); internal oscillator selectable |
| 7 (VCC/AVCC) | Supply voltage | 1.8–5.5 V digital supply; AVCC powers ADC and must be filtered independently |
| 8–10 (P3_7/P3_5/P3_4) | I²C/SSU interface | Shared SDA/SCL (I²C) and SSO/SSCK/SSI (SSU); software-configurable peripheral assignment |
| 11–12 (P3_3/P4_5) | Interrupt & trigger inputs | INT3, INT0, ADTRG - support edge-triggered wake-up from wait/stop modes |
| 13–14 (P1_7/P1_6) | Comparator outputs | LVCOUT2 and IVCMP1 serve as comparator outputs or timer/CLK0 functions per register setting |
| 15–20 (P1_5–P1_0) | Multi-function I/O | Support AN8–AN11 analog inputs, KI0–KI3 key interrupts, TRCIOx timer signals, and UART0 I/O |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Enables simultaneous code execution and data flash reprogramming without halting CPU operation |
| Hardware LIN Module | Integrated LIN 2.0/2.1 support via Timer RA and UART0 - eliminates external transceiver for basic node implementation |
| Low-Power Operating Modes | Wait mode (3.5 µA @ 32 kHz) and stop mode (2.0 µA) with selective peripheral wake-up capability |
| On-Chip Debug Support | Fully integrated on-chip debug circuit enables real-time trace, breakpoint, and flash rewrite during development |
| Voltage Detection & Monitoring | Dual-level voltage detection (VDD monitor + programmable threshold) with interrupt generation on drop/rise |
| Program Security | ROM code protect and ID code check prevent unauthorized read-out or firmware cloning |
Applications
| Home Appliance Control | Office Equipment Motor Drive |
|---|---|
|
Use Scenario: Digital thermostat and HVAC fan speed controller in compact air purifiers. IC Role / Device Role / Timing Role: Main system controller executing sensor polling, PID loop calculation, and PWM-driven DC fan regulation. Use Value: Integrated 10-bit ADC (AN8–AN11) and Timer RB PWM output eliminate external signal conditioning and driver ICs. |
Use Scenario: Paper feed and jam detection subsystem in multifunction printers. IC Role / Device Role / Timing Role: Dedicated motor sequencer and sensor interface managing stepper actuation and optical interrupter feedback. Use Value: Hardware LIN module enables direct communication with main controller over single-wire bus, reducing inter-board cabling. |
| Audio System Remote Interface | Industrial Panel Meter Front-End |
|
Use Scenario: IR remote decoder and display driver for portable Bluetooth speakers. IC Role / Device Role / Timing Role: Key input interrupt handler (KI0–KI3) and UART0-based command relay to audio SoC. Use Value: Four key interrupt pins with debouncing support allow direct matrix keypad connection without external logic. |
Use Scenario: Analog front-end for 4–20 mA loop-powered panel meters in factory automation. IC Role / Device Role / Timing Role: Precision ADC acquisition engine with voltage reference (VREF) and real-time clock (Timer RE) for timestamped readings. Use Value: On-chip 10-bit ADC with sample-and-hold and sweep mode achieves stable conversion under EMI-prone industrial conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21322ANSP | 8 KB program ROM, 1 KB RAM, identical peripherals and package | Suitable for simpler control tasks with lower firmware footprint; lacks headroom for future feature expansion | Select when firmware size remains ≤7.5 KB and no BGO-intensive field updates are required |
| R5F21324ADSP | Same memory and peripherals, but −40°C to +85°C extended temperature grade (D version) | Required for automotive cabin modules or outdoor industrial enclosures where ambient exceeds 85°C | Choose only if full industrial temp range validation is mandated; N version suffices for indoor consumer use |
Compared with R5F21322ANSP, the R5F21324ANSP#U1 provides 100% more program storage and 50% more RAM for complex state machines or protocol stacks; versus R5F21324ADSP, it trades extended temperature tolerance for cost and qualification simplicity in commercial-grade designs.
Availability
R5F21324ANSP#U1 is available at Aetrix Electronics and suitable for home appliance control, office equipment motor drive, and audio system remote interface applications requiring stable component supply across multi-year production cycles.
Supply support for R5F21324ANSP#U1 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 via merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, power, and SoC solutions.
The R5F21324ANSP#U1 belongs to the R8C/32A Group - a family of 16-bit MCUs designed for cost-sensitive, low-power embedded control in consumer and office equipment, emphasizing integration, EMI resilience, and debug-ready firmware development.
FAQ
What is the maximum operating frequency of the R5F21324ANSP#U1 and under what voltage conditions?
The R5F21324ANSP#U1 achieves a maximum operating frequency of 20 MHz when supplied with VCC = 2.7–5.5 V and using the XIN clock source. At reduced supply voltages (1.8–5.5 V), the maximum frequency drops to 5 MHz to ensure timing margin and stability - a hard limit enforced by internal clock dividers and voltage monitoring circuits.
Does the R5F21324ANSP#U1 support in-system programming of its data flash memory?
Yes, the R5F21324ANSP#U1 supports in-system programming of its 4 KB data flash (1 KB × 4 blocks) using the background operation (BGO) function. This allows firmware to erase and rewrite data flash sectors while continuing normal program execution - critical for logging, calibration storage, or secure parameter updates without system interruption.
What peripheral functions are multiplexed on Pin 11 (P3_3) of the R5F21324ANSP#U1?
Pin 11 (P3_3) of the R5F21324ANSP#U1 supports four configurable functions: INT3 interrupt input, TRCCLK (Timer RC clock input), CTS2/RTS2 (UART2 flow control), and SCS (SSU chip-select). Function selection is controlled by the SSUIICSR register's IICSEL bit and peripheral enable bits - no hardware reconfiguration is needed.
How does the R5F21324ANSP#U1 handle power-on reset and brown-out detection?
The R5F21324ANSP#U1 integrates a voltage detection circuit with power-on reset (POR) and two configurable brown-out thresholds (voltage detection 0 and 1). POR triggers automatically at power-up; voltage detection interrupts can be enabled to halt execution or initiate safe shutdown when VCC falls below user-defined levels - all managed via VCA1/VCA2 and VW0C/VW1C registers.
Is the R5F21324ANSP#U1 pin-compatible with other members of the R8C/32A Group?
Yes, the R5F21324ANSP#U1 shares identical 20-pin LSSOP (PLSP0020JB-A) packaging and pinout with all R8C/32A Group variants including R5F21321ANSP and R5F21322ANSP. Firmware and PCB layouts are interchangeable across the group - only memory size and temperature grade differ between part numbers.
R5F21324ANSP#U1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Series:
- R8C/3x/32A
- 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:
- 15
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1.5K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 4x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F21324ANSP#U1 FAQ
1.How can I place an order for R5F21324ANSP#U1 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21324ANSP#U1 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 R5F21324ANSP#U1 reliable?
The price and inventory of R5F21324ANSP#U1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21324ANSP#U1 is usually 5 days.
3.What payment methods are accepted for R5F21324ANSP#U1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21324ANSP#U1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21324ANSP#U1?
R5F21324ANSP#U1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21324ANSP#U1 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 R5F21324ANSP#U1?
For technical support, including R5F21324ANSP#U1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21324ANSP#U1 requirements.
6.How does Aetrix verify that R5F21324ANSP#U1 is sourced from the original manufacturer or authorized distributors?
All R5F21324ANSP#U1 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 R5F21324ANSP#U1 meets industry standards.
7.What is the process for return or replacement of R5F21324ANSP#U1?
All R5F21324ANSP#U1 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21324ANSP#U1, 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 R5F21324ANSP#U1 part is unused and in its original packaging.
Return procedure for R5F21324ANSP#U1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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