My Inquiry
My Account
Renesas R5F211B2SP#U0
- Part No.:
- R5F211B2SP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F211B2SP#U0.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,298
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
R5F211B2SP#U0 from Renesas Electronics is a 16-bit single-chip microcontroller in the R8C/1B Group, featuring an embedded R8C/Tiny Series CPU core, 8 KB flash program memory, 1 KB × 2 data flash ROM, 512 bytes RAM, and operating at up to 20 MHz (50 ns min. instruction time). It integrates a 10-bit 4-channel A/D converter, three timers (8-bit ×2, 16-bit ×1), UART, I²C bus interface, SSU, and LED drive ports - deployed in consumer appliance control and industrial sensor interfaces.
For engineers reviewing the R5F211B2SP#U0 datasheet, R5F211B2SP#U0 pinout, R5F211B2SP#U0 application, or R5F211B2SP#U0 equivalent, key selection criteria include its 20-pin LSSOP package (PLSP0020JB-A), -20°C to +85°C ambient rating, on-chip voltage detection and power-on reset, and dual on-chip oscillators with frequency adjustment capability.
Technical Context
The R5F211B2SP#U0 implements the R8C/Tiny Series CPU core with 89 fundamental instructions and 1 Mbyte address space. Its memory subsystem includes 8 KB flash program ROM and two independent 1 KB data flash blocks - enabling field-updatable configuration storage without external EEPROM.
Peripherals are tightly coupled to the CPU via dedicated interrupt vectors (11 internal, 4 external, 4 software sources) and 7 priority levels. Clock generation uses dual circuits: main crystal/ceramic resonator oscillator (XIN/XOUT) and high-speed/low-speed on-chip oscillators - the former supporting oscillation stop detection, the latter offering adjustable frequency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C/Tiny Series 16-bit core with 89 instructions and 1 Mbyte linear address space |
| Flash Memory | 8 KB program ROM + 1 KB × 2 data flash - supports 10,000 write/erase cycles for nonvolatile parameter storage |
| RAM | 512 bytes SRAM - sufficient for real-time control stacks and small buffers in sensor/actuator applications |
| A/D Converter | 10-bit resolution, 4 input channels (AN8–AN11) - enables direct analog sensing of temperature, voltage, or potentiometer signals |
| Timers | Timer X/Z (8-bit ×2, each with 8-bit prescaler); Timer C (16-bit with input capture/output compare) - supports PWM generation and pulse-width measurement |
| Serial Interfaces | UART ×2, clock-synchronous serial I/O ×1, I²C bus ×1, SSU ×1 - provides flexible host communication and peripheral bridging |
| Supply Voltage | 2.7 V to 5.5 V - compatible with both 3.3 V and 5 V system rails without level-shifting |
| Operating Temperature | -20°C to +85°C - qualified for standard industrial and consumer equipment 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 |
|---|---|---|
| 1 (P3_5) | I²C clock / SSU clock / comparator output | Shared SCL (I²C), SSCK (SSU), and CMP1_2 - requires mode selection via peripheral enable registers |
| 2 (P3_7) | Timer C input / SSU output / UART TX | Multi-function pin supporting CNTR0 (timer input), SSO (SSU data out), and TXD1 (UART output) |
| 3 (RESET) | Active-low reset input | Asynchronous reset assertion halts CPU and initializes peripherals - must be held low ≥100 ns for valid reset |
| 4 (XOUT) | Main clock oscillator output | Drives external crystal/resonator feedback path; open when using external clock source on XIN |
| 6 (XIN) | Main clock oscillator input | Accepts crystal (1–20 MHz), ceramic resonator, or external clock signal - enables precise timing for UART/I²C |
| 8 (MODE) | Boot mode select | Pulled high via resistor to enable normal operation; tied low for on-chip debug mode entry |
| 9 (P4_5) | External interrupt / UART RX | INT0 interrupt trigger and RXD1 serial input - supports wake-up from stop mode on falling edge |
| 14 (P1_3) | Key interrupt / timer Z output / A/D input | KI3 (key scan), TZOUT (PWM/timing signal), AN11 (analog channel) - shared resource requiring functional prioritization |
| 16 (VREF) | A/D reference voltage input | Accepts external reference (up to VCC) or internal AVCC - sets full-scale range for 10-bit conversion accuracy |
| 18 (P1_0) | Key interrupt / A/D input / comparator input | KI0, AN8, CMP0_0 - enables simultaneous key press detection and analog monitoring on same pin |
Key Features
| Feature | Design Value |
|---|---|
| On-chip data flash (1 KB × 2) | Enables firmware-rewritable parameter storage (e.g., calibration data, device ID) without external EEPROM |
| High-speed on-chip oscillator | Adjustable frequency reduces need for external crystals in cost-sensitive applications while maintaining UART timing accuracy |
| LED drive ports (P1_0–P1_3) | CMOS I/O pins with enhanced sink current support direct LED driving - eliminates discrete driver transistors |
| Oscillation stop detection | Hardware-level alert on XIN/XOUT failure prevents system hang - triggers interrupt or reset per configuration |
| Voltage detection circuit | Monitors VCC and asserts reset or interrupt if supply drops below programmable threshold - ensures reliable brown-out recovery |
| Wait/stop low-power modes | Typ. 35 µA (wait) and 0.7 µA (stop) current draw - extends battery life in portable or energy-conscious systems |
Applications
| Home Appliance Control | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Microcontroller in washing machine control board managing motor sequencing, water valve actuation, and user interface. IC Role / Device Role / Timing Role: Primary system controller executing real-time state machine logic, reading front-panel buttons (KI0–KI3), and driving LEDs (P1_0–P1_3). Use Value: Integrated 10-bit A/D reads thermistor and pressure sensor signals; dual UARTs enable communication with display module and inverter driver. |
Use Scenario: Embedded node in HVAC system monitoring temperature, humidity, and airflow via analog and digital sensors. IC Role / Device Role / Timing Role: Local sensor aggregator with I²C master interface to digital sensors and 4-channel A/D for analog transducers. Use Value: On-chip data flash stores calibration coefficients; low-power stop mode extends battery life in wireless sensor nodes. |
| Office Equipment | Portable Medical Device |
|
Use Scenario: Control unit in document scanner handling paper feed motors, CIS image sensor timing, and USB bridge logic. IC Role / Device Role / Timing Role: Timing-critical peripheral coordinator using Timer C for precise CIS line synchronization and UART for host communication. Use Value: 20 MHz operation ensures sub-millisecond response to paper jam interrupts; integrated voltage detector prevents data corruption during power dips. |
Use Scenario: Battery-powered blood glucose meter performing electrochemical strip analysis and LCD display control. IC Role / Device Role / Timing Role: Precision analog front-end controller acquiring strip current via A/D, managing LED backlight (P1_0–P1_3), and storing test results in data flash. Use Value: 10-bit A/D resolution meets ISO 15197 accuracy requirements; 0.7 µA stop-mode current enables multi-year battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F211B2DD | Same core, memory, and peripherals; packaged in 20-pin SDIP (PRDP0020BA-A) instead of LSSOP | Through-hole mounting preferred for prototyping or high-vibration environments | Select R5F211B2DD when manual soldering or mechanical robustness outweighs PCB area constraints |
| R5F211B2NP | Identical functionality; housed in 28-pin HWQFN (PWQN0028KA-B) with additional GPIO and NC pins | Requires PCB redesign but offers more routing flexibility and thermal performance | Choose R5F211B2NP when future expansion (e.g., extra UART or A/D channels) or thermal management is critical |
Compared with R5F211B2DD and R5F211B2NP, the R5F211B2SP#U0 delivers identical MCU functionality in the smallest footprint (LSSOP), optimizing board space for high-volume consumer products where surface-mount assembly is standard.
Availability
R5F211B2SP#U0 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor interface, and office equipment requiring stable component supply across long production lifecycles.
Supply support for R5F211B2SP#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 industrial, automotive, and IoT applications.
The R5F211B2SP#U0 belongs to the R8C/1B Group - a family designed for cost-sensitive, low-power embedded control in consumer and general industrial equipment, emphasizing integration, ease of use, and qualification for extended temperature operation.
FAQ
What is the maximum operating frequency and corresponding instruction execution time for R5F211B2SP#U0?
The R5F211B2SP#U0 operates at up to 20 MHz with a minimum instruction execution time of 50 ns under VCC = 3.0–5.5 V conditions. This timing assumes use of the main crystal oscillator (XIN/XOUT) and reflects worst-case cycle count for fundamental instructions - enabling deterministic real-time response in motor control and sensor sampling loops.
Does R5F211B2SP#U0 support in-system programming of its data flash memory?
Yes, the R5F211B2SP#U0 supports in-system programming of its 1 KB × 2 data flash blocks using standard VCC (2.7–5.5 V) - no external high-voltage programmer required. Firmware can reprogram calibration data or configuration parameters during normal operation, subject to 10,000-cycle endurance limits per block.
What are the key differences between R5F211B2SP#U0 and R5F211A2SP?
The R5F211B2SP#U0 includes 1 KB × 2 on-chip data flash ROM, while the R5F211A2SP has no data flash. All other specifications - CPU core, peripherals, pinout, and package - are identical. This makes R5F211B2SP#U0 suitable for applications requiring field-updatable nonvolatile storage without external components.
Which package type and pin count does R5F211B2SP#U0 use?
The R5F211B2SP#U0 uses a 20-pin molded-plastic LSSOP package (PLSP0020JB-A) with 0.65 mm lead pitch. This surface-mount package supports automated assembly and provides thermal and electrical characteristics aligned with the R8C/1B Group's industrial qualification standards.
Can R5F211B2SP#U0 operate from a single 3.3 V supply, and what are the implications for analog performance?
Yes, the R5F211B2SP#U0 operates from 2.7 V to 5.5 V, including 3.3 V nominal supply. At 3.3 V, the 10-bit A/D converter maintains full resolution when VREF is externally set to 3.3 V or internally derived from AVCC - ensuring accurate analog measurements without scaling loss in 3.3 V systems.
R5F211B2SP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Series:
- R8C/1x/1B
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- 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:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512 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:
R5F211B2SP#U0 FAQ
1.How can I place an order for R5F211B2SP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F211B2SP#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 R5F211B2SP#U0 reliable?
The price and inventory of R5F211B2SP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F211B2SP#U0 is usually 5 days.
3.What payment methods are accepted for R5F211B2SP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F211B2SP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F211B2SP#U0?
R5F211B2SP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F211B2SP#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 R5F211B2SP#U0?
For technical support, including R5F211B2SP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F211B2SP#U0 requirements.
6.How does Aetrix verify that R5F211B2SP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F211B2SP#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 R5F211B2SP#U0 meets industry standards.
7.What is the process for return or replacement of R5F211B2SP#U0?
All R5F211B2SP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F211B2SP#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 R5F211B2SP#U0 part is unused and in its original packaging.
Return procedure for R5F211B2SP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F211B2SP#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…
