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Renesas R5F2M122ANDD#U0
- Part No.:
- R5F2M122ANDD#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
R5F2M122ANDD#U0.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:163
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Product details
Overview
R5F2M122ANDD#U0 from Renesas is an 8 KB flash, 512-byte RAM R8C/M12A Group 16-bit MCU with 10-bit × 6-channel ADC, dual comparator B (B1/B3), UART0, and 20-pin DIP package (PRDP0020AD-A). It operates from 1.8 V to 5.5 V at up to 20 MHz (2.7–5.5 V) and supports -40 °C to +85 °C industrial temperature range - used in home appliance control panels requiring low EMI and integrated analog sensing.
For engineers reviewing the R5F2M122ANDD#U0 datasheet, R5F2M122ANDD#U0 pinout, R5F2M122ANDD#U0 application, or R5F2M122ANDD#U0 equivalent, key selection criteria include its 20-pin DIP industrial-grade packaging, dual comparator support (IVCMP1/IVCMP3, VCOUT1/VCOUT3), 6-channel 10-bit ADC with ADTRG trigger, UART0 asynchronous capability, and R8C CPU core with 16×16→32-bit multiplier for sensor signal processing.
Technical Context
The R5F2M122ANDD#U0 implements the R8C CPU core with 89 fundamental instructions, 1 Mbyte address space, and single-chip mode operation. Its interrupt system supports 69 vectors with 8 external inputs (INT0–INT3, KI0–KI3) and two priority levels.
Peripheral integration includes Timer RJ2 (16-bit), Timer RB2 (8/16-bit selectable), Timer RC (16-bit with 4 capture/compare registers), UART0 supporting both clock-synchronous and asynchronous serial I/O, and a voltage detection circuit with dual thresholds (VDET0/VDET1).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions, 1 Mbyte address space, 16×16→32-bit hardware multiplier |
| Memory | 8 KB program flash, 1 KB × 2 data flash blocks, 512 bytes RAM - enables firmware updates and parameter storage without external EEPROM |
| ADC | 10-bit resolution × 6 channels (AN0–AN4, AN7), sample-and-hold, sweep mode - supports multi-sensor analog acquisition |
| Comparator B | Two independent comparators (B1, B3) with dedicated inputs (IVCMP1/IVCMP3) and outputs (VCOUT1/VCOUT3) - enables dual-threshold overvoltage/undervoltage monitoring |
| Operating Range | 1.8 V to 5.5 V supply, -40 °C to +85 °C ambient - qualified for industrial control environments with wide voltage tolerance |
| Package | 20-pin DIP (PRDP0020AD-A), through-hole mounting - compatible with legacy PCB assembly and manual prototyping |
| Clock Sources | XIN/XOUT crystal interface, high-speed on-chip oscillator (adjustable), low-speed on-chip oscillator - eliminates need for external clock components in cost-sensitive designs |
Pinout & Package
20-pin DIP package (PRDP0020AD-A), through-hole, 0.3 inch body width, standard 0.1 inch pin pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1_0 / AN0 / TRCIOD / KI0 | Analog input / timer I/O / key interrupt | Primary analog channel input; supports key wake-up and timer trigger functions simultaneously |
| P3_3 / IVCMP3 / TRCCLK / INT3 | Comparator B3 input / timer clock / interrupt | Dedicated reference input for Comparator B3; also serves as external timer clock source and interrupt line |
| P3_4 / IVREF3 / TRCIOC / INT2 | Comparator B3 reference / timer I/O / interrupt | Provides adjustable reference voltage for Comparator B3; doubles as timer RC input capture and INT2 signal |
| P3_5 / TRCIOD / KI2 / VCOUT3 | Timer I/O / key interrupt / comparator output | Output of Comparator B3 result; also supports key wake-up and timer function multiplexing |
| P4_5 / INT0 / ADTRG | Interrupt / ADC trigger | Hardware-triggered ADC conversion start - enables precise timing-critical sampling synchronized to external events |
| XIN / XOUT | Clock oscillator interface | Supports ceramic resonator or crystal (1–20 MHz); XOUT is buffered output for feedback |
| RESET / PA_0 | Reset input / general-purpose I/O | Active-low hardware reset; PA_0 retains CMOS I/O functionality when not in reset mode |
| MODE | Boot mode select | Must be tied to VCC via resistor to enable normal program execution from internal flash |
Key Features
| Feature | Design Value |
|---|---|
| EMI/EMS-optimized design | Integrated layout and power management reduce radiated emissions and improve noise immunity in motor-driven appliances |
| Data flash endurance | 10,000 erase/write cycles per 1 KB block - sufficient for lifetime calibration storage in field-deployed devices |
| On-chip debug support | Full on-chip debug interface with flash rewrite capability - enables in-system programming and real-time debugging without external emulators |
| Low-power operating modes | Wait mode (CPU halted, peripherals active) and Stop mode (full shutdown) - extends battery life in portable consumer products |
| Voltage detection circuit | Dual-level detection (VDET0/VDET1) with programmable thresholds - provides robust brown-out protection and system health monitoring |
Applications
| Refrigerator Control Panel | Printer Engine Controller |
|---|---|
Use Scenario: Real-time monitoring of evaporator temperature, compressor status, and user interface inputs in residential refrigeration units. IC Role / Device Role / Timing Role: Primary system controller executing PID-based temperature regulation, reading thermistor ADC values, driving LED indicators, and managing button interrupts (KI0–KI3). Use Value: Integrated 6-channel ADC and dual comparators allow simultaneous monitoring of multiple thermal zones and overcurrent detection without external signal conditioning. | Use Scenario: Managing paper feed timing, toner level sensing, and motor sequencing in monochrome laser printers. IC Role / Device Role / Timing Role: Central timing and I/O coordinator using Timer RC PWM outputs for stepper motor control and UART0 for host communication. Use Value: 20 MHz max clock speed and hardware multiplier enable deterministic real-time motor phase calculation within tight timing windows. |
| Audio Amplifier Protection Circuit | Industrial HVAC Sensor Node |
Use Scenario: Detecting DC offset, thermal overload, and speaker short conditions in Class-D audio amplifiers. IC Role / Device Role / Timing Role: Analog safety monitor using Comparator B1/B3 for fast response (<1 µs propagation) and ADC for slow-varying thermal readings. Use Value: Dedicated VCOUT1/VCOUT3 outputs drive external latch circuits directly, enabling sub-microsecond fault shutdown independent of software latency. | Use Scenario: Remote air quality and temperature node with RS-485 backhaul in commercial HVAC ductwork. IC Role / Device Role / Timing Role: Low-power sensor aggregator using UART0 for Modbus RTU communication and ADC for CO₂/humidity sensor interfacing. Use Value: -40 °C to +85 °C rating and 1.8 V minimum supply ensure reliable operation in unconditioned mechanical rooms with wide ambient swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F2M122ADSP | Same core, memory, and peripherals; 20-pin LSSOP (PLSP0020JB-A) instead of DIP | Suitable for surface-mount production; lacks through-hole compatibility and manual prototyping ease | Select for automated SMT assembly where board space is constrained and reflow capability exists |
| R5F2M121ANDD | 4 KB program ROM (vs. 8 KB), identical package, peripherals, and temperature grade | Lower firmware capacity limits complex feature sets or future OTA updates | Select when application firmware fits within 4 KB and cost reduction is prioritized over headroom |
Compared with R5F2M122ADSP and R5F2M121ANDD, the R5F2M122ANDD#U0 uniquely combines industrial temperature rating, 20-pin DIP packaging, and 8 KB flash - making it optimal for legacy-replacement and hand-soldered industrial control designs where code growth margin and mechanical robustness are critical.
Availability
R5F2M122ANDD#U0 is available at Aetrix Electronics and suitable for refrigerator control panels, printer engine controllers, audio amplifier protection circuits, and industrial HVAC sensor nodes requiring stable component supply across extended product lifecycles.
Supply support for R5F2M122ANDD#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 delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The R8C/M12A Group, including R5F2M122ANDD#U0, was designed for cost-sensitive, EMI-critical embedded control applications in home appliances and office equipment - emphasizing analog integration, low-power operation, and industrial-grade reliability.
FAQ
What is the maximum operating frequency of the R5F2M122ANDD#U0 and under what voltage conditions?
The R5F2M122ANDD#U0 achieves a maximum operating frequency of 20 MHz when powered at 2.7 V to 5.5 V. At lower voltages (1.8 V to 5.5 V), the maximum frequency is reduced to 5 MHz to maintain timing margins and stability. This dual-frequency capability allows flexible power/performance trade-offs in battery-powered or wide-input-voltage applications, and the R5F2M122ANDD#U0 datasheet specifies these limits in Section 1.1.3 under "Operating frequency / Power supply voltage".
Does the R5F2M122ANDD#U0 support in-system programming of its flash memory?
Yes, the R5F2M122ANDD#U0 supports full in-system programming via its on-chip debug interface, including erase, write, and verification of both program ROM and data flash blocks. The device implements ID code check and lock-bit protection to prevent unauthorized access, and the R5F2M122ANDD#U0's debug architecture enables firmware updates without removing the IC from the target board.
How many analog input channels does the R5F2M122ANDD#U0 ADC support, and which pins are assigned?
The R5F2M122ANDD#U0 integrates a 10-bit successive-approximation ADC with six usable channels: AN0 (P1_0), AN1 (P1_1), AN2 (P1_2), AN3 (P1_3), AN4 (P1_4), and AN7 (P1_7). Channel AN0 is accessible only on R8C/M12A Group devices like the R5F2M122ANDD#U0 - distinguishing it from the M11A Group - and all channels support sweep mode for sequential conversion without CPU intervention.
What are the key differences between the R5F2M122ANDD#U0 and the R5F2M112ANDD in terms of I/O and peripheral capability?
The R5F2M122ANDD#U0 provides 20-pin packaging with 17 CMOS I/O ports and 8 high-current drive ports, while the R5F2M112ANDD is limited to 14 pins, 11 CMOS I/O ports, and 5 high-current ports. Critically, the R5F2M122ANDD#U0 adds Comparator B3 (IVCMP3, VCOUT3), two additional external interrupt inputs (INT3, KI3), and one extra ADC channel (AN0), making it suitable for more complex analog and interrupt-driven applications than the R5F2M112ANDD.
Is the R5F2M122ANDD#U0 pin-compatible with other members of the R8C/M12A Group?
Yes, the R5F2M122ANDD#U0 shares identical pinout and electrical characteristics with all other 20-pin DIP variants in the R8C/M12A Group (e.g., R5F2M120ANDD, R5F2M121ANDD), differing only in internal flash size (8 KB vs. 2 KB or 4 KB) and RAM capacity. This allows direct substitution within the same footprint when firmware size requirements change, and the R5F2M122ANDD#U0 maintains full functional and timing compatibility across the group.
R5F2M122ANDD#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-DIP (0.300", 7.62mm)
- Series:
- R8C/Mx/12A
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- UART/USART
- Peripherals:
- POR, PWM, Voltage Detect, WDT
- Number of I/O:
- 17
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 6x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
R5F2M122ANDD#U0 FAQ
1.How can I place an order for R5F2M122ANDD#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F2M122ANDD#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 R5F2M122ANDD#U0 reliable?
The price and inventory of R5F2M122ANDD#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F2M122ANDD#U0 is usually 5 days.
3.What payment methods are accepted for R5F2M122ANDD#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F2M122ANDD#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F2M122ANDD#U0?
R5F2M122ANDD#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F2M122ANDD#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 R5F2M122ANDD#U0?
For technical support, including R5F2M122ANDD#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F2M122ANDD#U0 requirements.
6.How does Aetrix verify that R5F2M122ANDD#U0 is sourced from the original manufacturer or authorized distributors?
All R5F2M122ANDD#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 R5F2M122ANDD#U0 meets industry standards.
7.What is the process for return or replacement of R5F2M122ANDD#U0?
All R5F2M122ANDD#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F2M122ANDD#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 R5F2M122ANDD#U0 part is unused and in its original packaging.
Return procedure for R5F2M122ANDD#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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