My Inquiry
My Account
Renesas R5F211A1SP#U0
- Part No.:
- R5F211A1SP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F211A1SP#U0.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,656
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
R5F211A1SP#U0 from Renesas Electronics is a 16-bit single-chip microcontroller in the R8C/1A Group, featuring an R8C/Tiny Series CPU core, 4 KB on-chip flash ROM, 384 bytes RAM, and integrated peripherals including 10-bit A/D converter (4 channels), UART, I²C bus interface, and three timer modules (8-bit ×2, 16-bit ×1). It operates at up to 20 MHz with supply voltage 3.0–5.5 V and targets embedded control in consumer appliances and industrial sensors.
For engineers reviewing the R5F211A1SP#U0 datasheet, R5F211A1SP#U0 pinout, R5F211A1SP#U0 application, or R5F211A1SP#U0 equivalent, key selection considerations include its LSSOP-20 package, absence of data flash (distinguishing it from R8C/1B), -20°C to +85°C temperature grade, and support for LED drive ports, hardware interrupt sources (15 total), and on-chip oscillators with frequency adjustment.
Technical Context
The R5F211A1SP#U0 implements the R8C/Tiny Series CPU core with 89 fundamental instructions and executes code at 50 ns minimum instruction time (20 MHz, 3.0–5.5 V). Its memory architecture provides 1 Mbyte address space, with program execution supported by on-chip flash ROM and data handling enabled by 384 bytes of SRAM.
Peripheral integration includes dual serial interfaces (UART + clock-synchronous I/O), I²C bus master/slave capability, 10-bit A/D converter with four analog inputs, and three independent timers-Timer X/Z (8-bit with prescaler) and Timer C (16-bit with input capture/output compare)-all managed via dedicated I/O pins and interrupt vectors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C/Tiny Series 16-bit core with 89 instructions; enables compact, deterministic real-time control code. |
| ROM Capacity | 4 KB flash ROM; stores firmware with in-system programmability and 1000-cycle endurance. |
| RAM Capacity | 384 bytes SRAM; supports stack, variables, and small buffers for sensor data or protocol state. |
| Max Operating Frequency | 20 MHz (at VCC = 3.0–5.5 V); delivers 20 MIPS throughput for responsive motor or UI control. |
| A/D Converter | 10-bit resolution, 4-channel input (AN8–AN11); suitable for direct sensing of thermistors, potentiometers, or battery voltage. |
| Supply Voltage Range | 3.0 V to 5.5 V; compatible with standard 3.3 V and 5 V system rails without level-shifting. |
| Operating Temperature | -20°C to +85°C; certified for indoor consumer and general industrial environments. |
Pinout & Package
Package: 20-pin molded-plastic LSSOP (PLSP0020JB-A), 0.65 mm pitch, surface-mount, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1_0 / KI0 / AN8 / CMP0_0 | Multi-function I/O port | Configurable as key interrupt input, analog input channel 0, or comparator output; enables touch/button sensing and analog monitoring. |
| P1_4 / TXD0 | UART transmit output | Drives serial data to external host or display; supports TTL-level communication without transceiver. |
| P1_5 / RXD0 / CNTR01 / INT11 | UART receive input / counter input / interrupt source | Accepts serial commands while simultaneously serving as edge-triggered counter or wake-up interrupt. |
| P3_4 / SCS / SDA / CMP1_1 | I²C data line / chip select / comparator output | Shares SDA functionality for I²C slave/master operation and supports multi-drop sensor networks. |
| XIN / P4_6 | Main clock oscillator input | Accepts external crystal (e.g., 4–20 MHz) or ceramic resonator; enables precise timing for UART baud rate generation. |
| RESET | Active-low reset input | Asynchronous reset assertion halts CPU and initializes registers; requires external pull-up and debouncing. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip oscillators | High-speed and low-speed on-chip oscillators with frequency adjustment; eliminates need for external crystal in cost-sensitive designs. |
| LED drive ports | Four I/O pins (P1_0–P1_3) support direct LED sinking; simplifies status indicator implementation without external drivers. |
| Hardware watchdog timer | 15-bit watchdog with prescaler and count-source protection; prevents runaway code in unattended systems. |
| Voltage detection circuit | Integrated brown-out detection; triggers reset if VCC drops below safe operating threshold, ensuring reliable startup/shutdown. |
| Interrupt priority levels | 7-level nested interrupt controller; enables deterministic response to time-critical events like encoder pulses or safety signals. |
Applications
| Home Appliance Control | Industrial Sensor Node |
|---|---|
|
Use Scenario: Embedded control of washing machine drum motor, water valve, and user interface panel. IC Role / Device Role / Timing Role: Main system controller executing state-machine logic, reading push-button inputs, driving LEDs, and managing UART-based diagnostics. Use Value: Integrated 10-bit A/D converter reads temperature and pressure sensors directly; LED drive ports reduce BOM count by eliminating discrete drivers. |
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and light intensity. IC Role / Device Role / Timing Role: Low-power data acquisition node with periodic wake-up, sensor sampling, and I²C communication to host MCU. Use Value: Stop mode current of 0.7 µA extends battery life; on-chip oscillators eliminate timing component cost and PCB area. |
| Office Equipment UI | Audio Device Peripheral Control |
|
Use Scenario: Keypad scanning and display backlight control in multifunction printers and copiers. IC Role / Device Role / Timing Role: Dedicated UI co-processor handling key debounce, LED dimming via PWM-capable timers, and UART feedback to main SoC. Use Value: Four key interrupt inputs (KI0–KI3) enable fast, low-latency button response; 8-bit timers generate precise PWM for smooth LED brightness control. |
Use Scenario: Volume, mute, and source selection control in powered speakers and soundbars. IC Role / Device Role / Timing Role: Interface bridge between mechanical controls and digital audio subsystem, translating analog potentiometer readings and switch states into I²C commands. Use Value: 4-channel A/D converter digitizes analog volume pots directly; I²C interface allows seamless integration with audio DACs or DSPs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F211A2SP#U0 | 8 KB flash ROM, 512 bytes RAM; identical package, peripherals, and timing specs. | Supports larger firmware images (e.g., added USB HID stack or enhanced encryption routines). | Select when firmware size exceeds 4 KB or additional RAM is required for buffering or multitasking. |
| R5F211B1SP#U0 | Includes 2 KB data flash (1 KB × 2 blocks); otherwise matches R5F211A1SP#U0 in ROM/RAM, package, and peripherals. | Enables non-volatile parameter storage (e.g., calibration data, user preferences) without external EEPROM. | Choose when field-updatable configuration storage is required and data retention across power cycles is critical. |
Compared with R5F211A1SP#U0, R5F211A2SP#U0 offers scalable code space while maintaining full pin and software compatibility, whereas R5F211B1SP#U0 adds data flash for configuration persistence but shares no data flash capability with the base R5F211A1SP#U0.
Availability
R5F211A1SP#U0 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor nodes, and office equipment UI requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for R5F211A1SP#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 applications.
The R8C/1A Group, including R5F211A1SP#U0, was designed for cost-sensitive, low-power embedded control in consumer electronics and general industrial equipment-emphasizing integration, ease of use, and qualification for commercial temperature ranges.
FAQ
What is the maximum clock frequency supported by the R5F211A1SP#U0?
The R5F211A1SP#U0 supports a maximum operating frequency of 20 MHz when powered at 3.0–5.5 V. At this speed, its minimum instruction execution time is 50 ns. Operation at 10 MHz is guaranteed down to 2.7 V, enabling flexible power/performance trade-offs in battery-powered designs.
Does the R5F211A1SP#U0 include data flash memory?
No, the R5F211A1SP#U0 does not include data flash memory. It belongs to the R8C/1A Group, which features only program flash ROM (4 KB in this variant). Data flash (1 KB × 2 blocks) is exclusive to the R8C/1B Group, such as the R5F211B1SP#U0.
Which package type is used for the R5F211A1SP#U0?
The R5F211A1SP#U0 uses the PLSP0020JB-A package: a 20-pin molded-plastic LSSOP with 0.65 mm lead pitch. This package is surface-mount compatible, RoHS-compliant, and optimized for compact consumer electronics layouts.
Can the R5F211A1SP#U0 operate from a 3.3 V supply?
Yes, the R5F211A1SP#U0 operates reliably from a 3.3 V supply across its full temperature range (-20°C to +85°C). At 3.3 V and 10 MHz, typical current consumption is 5 mA with A/D converter stopped, making it well-suited for 3.3 V system designs.
What peripheral interfaces are available on the R5F211A1SP#U0?
The R5F211A1SP#U0 integrates UART, clock-synchronous serial I/O, I²C bus interface, 10-bit A/D converter (4 channels), three timers (8-bit ×2, 16-bit ×1), and hardware watchdog. These peripherals are accessible via dedicated pins and support concurrent operation under interrupt-driven or polling control.
R5F211A1SP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Series:
- R8C/1x/1A
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- I2C, SIO, SSU, UART/USART
- Peripherals:
- LED, POR, Voltage Detect, WDT
- Number of I/O:
- 13
- Program Memory Size:
- 4KB (4K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 384 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 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:
R5F211A1SP#U0 FAQ
1.How can I place an order for R5F211A1SP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F211A1SP#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 R5F211A1SP#U0 reliable?
The price and inventory of R5F211A1SP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F211A1SP#U0 is usually 5 days.
3.What payment methods are accepted for R5F211A1SP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F211A1SP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F211A1SP#U0?
R5F211A1SP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F211A1SP#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 R5F211A1SP#U0?
For technical support, including R5F211A1SP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F211A1SP#U0 requirements.
6.How does Aetrix verify that R5F211A1SP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F211A1SP#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 R5F211A1SP#U0 meets industry standards.
7.What is the process for return or replacement of R5F211A1SP#U0?
All R5F211A1SP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F211A1SP#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 R5F211A1SP#U0 part is unused and in its original packaging.
Return procedure for R5F211A1SP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F211A1SP#U0 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…
