My Inquiry
My Account
Renesas R5F211B1DD#U0
- Part No.:
- R5F211B1DD#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-SDIP (0.300", 7.62mm)
- Datasheet:
-
R5F211B1DD#U0.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 20SDIP
- Quantity:
- Payment:
- Shipping:
Inventory:163
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
R5F211B1DD#U0 from Renesas Electronics is a 16-bit single-chip microcontroller in the R8C/1B Group, featuring an R8C/Tiny Series CPU core, 4 KB program flash ROM, 1 KB × 2 data flash memory, 384 bytes RAM, and operating at up to 20 MHz (50 ns min. instruction time). It integrates a 10-bit 4-channel ADC, three timers (8-bit ×2, 16-bit ×1), UART, I²C, SSU, and LED drive ports. It targets embedded control in industrial sensors and appliance subsystems.
For engineers reviewing the R5F211B1DD#U0 datasheet, R5F211B1DD#U0 pinout, R5F211B1DD#U0 application, or R5F211B1DD#U0 equivalent, key selection criteria include its -40°C to +85°C industrial temperature grade (D suffix), 20-pin SDIP package (PRDP0020BA-A), on-chip data flash endurance (10,000 erase/write cycles), and integrated voltage detection and power-on reset circuits.
Technical Context
The R5F211B1DD#U0 implements the R8C/Tiny CPU core with 89 fundamental instructions and a 1 Mbyte linear address space. Its dual clock system includes a main crystal/resonator oscillator (XIN/XOUT) and an adjustable high-speed on-chip oscillator, plus low-speed on-chip oscillator for stop-mode operation.
Peripheral integration centers on mixed-signal control: four analog inputs (AN8–AN11) feed a 10-bit successive-approximation ADC with internal reference support (VREF pin); timer resources include input capture/output compare (Timer C), PWM-capable outputs (TZOUT), and counter inputs (CNTR0, TCIN); serial connectivity spans UART, I²C bus interface, and clock-synchronous SSU with chip select.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C/Tiny 16-bit architecture with register bank switching and 20-bit PC for 1 Mbyte addressing |
| Memory | 4 KB program flash ROM + 2 KB data flash (1 KB × 2 blocks, 10,000-cycle endurance) + 384 B RAM |
| Operating Voltage | 2.7–5.5 V - supports direct interface with 3.3 V and 5 V logic systems without level shifters |
| Temperature Range | -40°C to +85°C (D-grade industrial qualification per Renesas quality classification) |
| ADC | 10-bit SAR converter with 4 input channels (AN8–AN11), external reference (VREF) or internal VCC option |
| Timers | Timer X/Z (8-bit ×2, prescaler), Timer C (16-bit, input capture/output compare), TZOUT PWM output |
| Serial Interfaces | UART (2 channels), I²C bus (1 channel), SSU (1 channel with SCS/SSCK/SSO), clock-synchronous I/O |
| Package | 20-pin SDIP (PRDP0020BA-A), 7.62 mm × 12.7 mm body, 2.54 mm pitch, through-hole mounting |
Pinout & Package
Package: 20-pin molded-plastic SDIP (PRDP0020BA-A), RoHS-compliant, through-hole mountable with 2.54 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 20 | P3_4 / SCS / SDA / CMP1_1 | Multi-function I/O: chip select for SSU, I²C data line, comparator output - requires software direction control |
| 2, 19 | P3_3 / TCIN / INT3 / SSI00 / CMP1_0 | Timer C input capture, external interrupt source, SSU data I/O, comparator output - shared signal routing |
| 3 | RESET | Active-low asynchronous reset input - must be held low ≥100 ns for reliable reset assertion |
| 4, 6 | XOUT / P4_7, XIN / P4_6 | Main clock oscillator I/O pair - accepts ceramic resonator (455 kHz–20 MHz) or external clock on XIN |
| 5, 7 | VSS/AVSS, VCC/AVCC | Dedicated digital/analog ground and supply pins - decoupling capacitor required between AVCC–AVSS |
| 8 | MODE | Boot mode select - tied to VCC via resistor to enable normal flash execution after reset |
| 9 | P4_5 / INT0 / RXD1 | External interrupt input or UART1 receive - enables wake-up from stop mode on falling edge |
| 10–18 | P1_0–P1_7 | General-purpose CMOS I/O with programmable pull-up; P1_0–P1_3 double as LED driver ports (sink current rated) |
| 16 | VREF | Analog reference voltage input - sets full-scale range for 10-bit ADC; can be externally driven or bypassed |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Data Flash | 2 KB (1 KB × 2 blocks) with 10,000 erase/write cycles - enables field firmware updates and parameter storage without external EEPROM |
| Integrated Analog Front-End | 10-bit 4-channel ADC with selectable reference (VREF or VCC) and dedicated analog supply pins (AVCC/AVSS) - reduces noise coupling in sensor interfaces |
| Low-Power Operation Modes | Stop mode (0.7 µA typical) and wait mode (35 µA typical) - extends battery life in portable or energy-constrained applications |
| Dual Clock System | Main crystal oscillator + adjustable high-speed on-chip oscillator (±1% accuracy after calibration) - eliminates need for external timing components in cost-sensitive designs |
| Industrial Temperature Grade | -40°C to +85°C operation (D suffix) - qualified for use in factory automation, HVAC controls, and motor drives without derating |
| Hardware Safety Functions | On-chip voltage detector, power-on reset circuit, and watchdog timer with prescaler and count-source protection - reduces external BOM for functional safety compliance |
Applications
| Industrial Sensor Node | Smart Appliance Control |
|---|---|
|
Use Scenario: Standalone temperature/humidity sensor node with local display and RS-485 communication. IC Role / Device Role / Timing Role: Main system controller executing sensor acquisition, linearization, display driving, and UART-to-RS485 protocol translation. Use Value: Integrated 10-bit ADC and UART eliminate external converters and transceivers; data flash stores calibration coefficients and device ID. |
Use Scenario: Cooktop panel controller managing touch keys, LED indicators, thermal cutoff, and buzzer feedback. IC Role / Device Role / Timing Role: Real-time human interface processor handling key scan, LED PWM dimming, fault monitoring, and audible alerts. Use Value: Four LED drive ports directly sink current for indicator LEDs; KI0–KI3 support debounced key interrupts; TZOUT generates precise buzzer tones. |
| Building Automation Actuator | Portable Diagnostic Tool |
|
Use Scenario: Motorized damper controller receiving Modbus RTU commands and reporting position via analog output. IC Role / Device Role / Timing Role: Fieldbus interface MCU with analog output generation, position feedback ADC, and fail-safe shutdown logic. Use Value: Dual UART channels allow simultaneous Modbus RTU (RXD1/TXD1) and debug console (RXD0/TXD0); 16-bit Timer C provides accurate PWM for analog output scaling. |
Use Scenario: Handheld test instrument measuring DC voltage, resistance, and continuity with LCD and button interface. IC Role / Device Role / Timing Role: Embedded measurement engine performing ADC sampling, calculation, display update, and button-driven menu navigation. Use Value: On-chip voltage detector ensures stable operation during battery discharge; data flash retains user preferences and calibration offsets across power cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F211A1DD | No data flash memory (0 KB); identical package, pinout, peripherals, and temperature grade | Suitable where firmware updates or nonvolatile parameter storage are not required | Select R5F211A1DD when boot code is fixed and runtime configuration persistence is unnecessary |
| R5F211B2DD | 8 KB program ROM + same 2 KB data flash; otherwise identical electrical and functional specification | Required when larger application firmware footprint exceeds 4 KB capacity | Choose R5F211B2DD if bootloader, communication stack, or feature-rich firmware demands >4 KB code space |
Compared with R5F211A1DD, the R5F211B1DD#U0 adds field-upgradable data storage without changing PCB layout or power design; versus R5F211B2DD, it trades 4 KB of program ROM for lower cost and smaller footprint while retaining full peripheral compatibility.
Availability
R5F211B1DD#U0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart appliance control modules, and building automation actuators requiring stable component supply and long-term manufacturing continuity.
Supply support for R5F211B1DD#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, power, and SoC solutions for automotive, industrial, and IoT markets.
The R8C/1B Group, including R5F211B1DD#U0, was designed for cost-sensitive, low-power embedded control in appliances, sensors, and industrial equipment - emphasizing integration, reliability, and ease of certification.
FAQ
What is the maximum operating frequency and corresponding supply voltage range for R5F211B1DD#U0?
The R5F211B1DD#U0 operates at up to 20 MHz with a supply voltage of 3.0–5.5 V. At 10 MHz, it supports a wider 2.7–5.5 V range. This dual-voltage/frequency capability allows flexible power supply design - for example, using a 3.3 V LDO for noise-sensitive analog sections while maintaining full-speed CPU performance.
Does R5F211B1DD#U0 support in-system programming (ISP) of its flash memory?
Yes, the R5F211B1DD#U0 supports in-system programming of both program ROM and data flash via its on-chip UART interface using Renesas' standard flash programming protocol. No external programmer is required for field firmware updates, provided the boot mode (MODE pin) and reset sequence are correctly managed during programming.
What are the key differences between R5F211B1DD#U0 and R5F211A1DD?
The R5F211B1DD#U0 includes 2 KB of data flash (1 KB × 2 blocks, 10,000-cycle endurance), while R5F211A1DD has no data flash. All other specifications - pinout, package, peripherals, clock system, temperature grade, and program ROM size (4 KB) - are identical. This makes R5F211B1DD#U0 the drop-in upgrade when nonvolatile parameter storage is needed.
How is the analog-to-digital converter (ADC) configured on R5F211B1DD#U0?
The R5F211B1DD#U0 features a 10-bit successive-approximation ADC with four input channels (AN8–AN11) and configurable reference selection (internal VCC or external VREF pin). Conversion is triggered by software, timer, or external event, and results are stored in dedicated 16-bit result registers - enabling precise sensor measurements without external ADC components.
Is R5F211B1DD#U0 pin-compatible with other packages in the R8C/1B Group?
No - R5F211B1DD#U0 uses the 20-pin SDIP package (PRDP0020BA-A). It shares pin functions with the 20-pin LSSOP (PLSP0020JB-A) variant but differs mechanically and electrically from the 28-pin HWQFN (PWQN0028KA-B) version, which adds pins and reassigns some signals. Board layout must match the SDIP footprint specifically.
R5F211B1DD#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-SDIP (0.300", 7.62mm)
- Series:
- R8C/1x/1B
- 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:
- Through Hole
- Supplier Device Package:
R5F211B1DD#U0 FAQ
1.How can I place an order for R5F211B1DD#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F211B1DD#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 R5F211B1DD#U0 reliable?
The price and inventory of R5F211B1DD#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F211B1DD#U0 is usually 5 days.
3.What payment methods are accepted for R5F211B1DD#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F211B1DD#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F211B1DD#U0?
R5F211B1DD#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F211B1DD#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 R5F211B1DD#U0?
For technical support, including R5F211B1DD#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F211B1DD#U0 requirements.
6.How does Aetrix verify that R5F211B1DD#U0 is sourced from the original manufacturer or authorized distributors?
All R5F211B1DD#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 R5F211B1DD#U0 meets industry standards.
7.What is the process for return or replacement of R5F211B1DD#U0?
All R5F211B1DD#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F211B1DD#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 R5F211B1DD#U0 part is unused and in its original packaging.
Return procedure for R5F211B1DD#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F211B1DD#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…
