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Renesas UPD78F9116BMC-5A4-A
- Part No.:
- UPD78F9116BMC-5A4-A
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
UPD78F9116BMC-5A4-A.pdf
- Description:
- IC MCU
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Product details
Overview
UPD78F9116BMC-5A4-A from Renesas Electronics is an 8-bit flash-based microcontroller in the 78K/0S Series, featuring a 10-bit A/D converter across 4 channels, 8 Kbytes of on-chip program memory, and 256 bytes of internal high-speed RAM. It operates from 2.7 V to 5.5 V and supports industrial ambient temperatures (–40 to +85°C), targeting appliance control applications such as washing machine motor sequencing and sensor-based cycle management.
For engineers reviewing the UPD78F9116BMC-5A4-A datasheet, UPD78F9116BMC-5A4-A pinout, UPD78F9116BMC-5A4-A application, or UPD78F9116BMC-5A4-A equivalent, key selection considerations include its 30-pin plastic shrink SOP (MC-5A4) package, 16-bit timer with capture capability, UART/3-wire serial interface, and 10-bit ADC resolution-critical for closed-loop feedback in white goods and industrial controls.
Technical Context
This microcontroller implements the 78K/0S CPU core with 8-bit × 8-bit hardware multiplier, vectored interrupt architecture (6 internal + 3 external sources), and configurable instruction execution time (0.4 µs or 1.6 µs at 5.0 MHz system clock). Its peripheral set includes three independent timers: one 16-bit timer with input capture (CPT20), one 8-bit timer/event counter with external clock input (TI80), and a watchdog timer with both maskable and non-maskable reset outputs.
The analog subsystem integrates four 10-bit A/D input channels (ANI0–ANI3) referenced to AVDD/AVSS, requiring separate analog power and ground connections. Serial communication is handled by Serial Interface 20, supporting switchable UART (RXD20/TXD20) or 3-wire synchronous (SCK20/SI20/SO20/SS20) modes, with dedicated port pins mapped to Port 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 78K/0S 8-bit RISC architecture with 8×8 hardware multiplier |
| Program Memory | 8 Kbytes flash - supports in-system programming and field firmware updates |
| Data Memory | 256 bytes internal high-speed RAM - accessible in single-cycle instructions |
| A/D Converter | 10-bit resolution × 4 channels - enables precise analog sensing for motor current, temperature, and pressure |
| Timers | 16-bit timer (TM20) with capture input, 8-bit timer/event counter (TM80), and watchdog timer - supports PWM generation, event timing, and system safety monitoring |
| Serial Interface | Switchable UART or 3-wire synchronous mode - simplifies host MCU communication or sensor network integration |
| Supply Voltage | 2.7 V to 5.5 V - compatible with standard 3.3 V and 5 V logic domains without level-shifting |
| Operating Temperature | –40°C to +85°C - qualified for industrial and home appliance environments |
Pinout & Package
UPD78F9116BMC-5A4-A uses a 30-pin plastic shrink SOP package (300 mils, resin thickness 1.2 mm), designated MC-5A4 type. Pin functions are electrically validated per Renesas Data Sheet U12815EJ2V1DS00.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00–P03 | Port 0 I/O | 4-bit CMOS bidirectional port with software-configurable pull-up resistors - used for general-purpose control signals and status inputs |
| P10, P11 | Port 1 I/O | 2-bit CMOS bidirectional port - suitable for auxiliary control lines or button interfaces |
| P20–P25 | Port 2 multifunction | 6-bit port with serial interface (SCK20/SI20/SO20/SS20), timer I/O (TO20/TO80), interrupts (INTP0–INTP2), and capture (CPT20) - central to communication and timing subsystems |
| P50–P53 | Port 5 open-drain | 4-bit N-ch open-drain I/O with 12-V withstand voltage - drives relays, LEDs, or optocouplers directly without external transistors |
| P60–P63 | Analog input | 4-bit dedicated analog input (ANI0–ANI3) - connects directly to sensors with no digital noise coupling |
| AVDD / AVSS | Analog power/ground | Separate analog supply and ground pins - essential for achieving full 10-bit ADC accuracy and noise immunity |
| X1 / X2 | Crystal oscillator | Connects to external quartz resonator (e.g., 4–10 MHz) for stable system clock generation |
| RESET | Active-low reset | Asynchronous reset input - initiates hardware reset when pulled low, with internal pull-up |
| IC0 | Internally connected | Must be externally tied to VSS - ensures correct internal biasing of analog circuitry |
Key Features
| Feature | Design Value |
|---|---|
| 10-bit A/D converter × 4 channels | Enables high-resolution analog measurement for motor phase current, thermistor-based temperature, and water-level sensing in appliances |
| 16-bit timer with capture input (CPT20) | Supports precise edge-triggered timing for encoder position feedback or zero-cross detection in AC motor drives |
| UART/3-wire serial interface | Reduces BOM cost by eliminating external UART ICs; 3-wire mode allows daisy-chained sensor networks |
| N-ch open-drain outputs (P50–P53) | Directly drives 12-V loads like solenoids and indicator lamps - eliminates need for discrete driver transistors |
| On-chip 8×8 multiplier | Accelerates PID loop calculations and scaling operations in real-time control without software emulation overhead |
| 2.7–5.5 V wide supply range | Permits direct operation from unregulated 5 V rails or regulated 3.3 V supplies - improves system-level power architecture flexibility |
Applications
| Washing Machine Control | Refrigerator Compressor Management |
|---|---|
Use Scenario: Real-time monitoring of drum rotation speed, water temperature, and detergent dispensing timing during wash cycles. IC Role / Device Role / Timing Role: Central controller executing motor drive logic, ADC sampling of NTC thermistors, and serial communication with display module. Use Value: 10-bit ADC resolution ensures ±0.5°C temperature accuracy; 16-bit timer capture synchronizes with motor back-EMF zero-cross events for efficient BLDC commutation. |
Use Scenario: Regulating compressor on/off duty cycle based on evaporator temperature, ambient humidity, and door-open events. IC Role / Device Role / Timing Role: System supervisor managing thermal protection, fan speed control via PWM, and fault logging in non-volatile memory. Use Value: N-ch open-drain outputs (P50–P53) directly switch 12-V relay coils; wide VDD range accommodates battery-backed backup during brownout conditions. |
| Cleaner Motor Drive | Industrial Fan Controller |
Use Scenario: Closed-loop speed regulation of vacuum motor using hall-effect sensor feedback and PWM-controlled MOSFET gate drivers. IC Role / Device Role / Timing Role: Real-time motion controller performing ADC-based current sensing, 16-bit timer-based PWM generation, and overcurrent shutdown. Use Value: Hardware multiplier accelerates current-loop PI calculations; CPT20 input captures hall sensor edges with sub-microsecond latency for accurate rotor position. |
Use Scenario: Monitoring airflow pressure, bearing temperature, and supply voltage in HVAC blowers, triggering alarms or derating on anomaly detection. IC Role / Device Role / Timing Role: Embedded monitor interfacing with analog sensors, driving status LEDs, and communicating fault codes via UART to building management systems. Use Value: 8 Kbytes flash stores multiple calibration tables per sensor; watchdog timer ensures fail-safe shutdown if firmware hangs during critical thermal events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UPD78F9114BMC-5A4-A | 8 Kbytes ROM, but 8-bit A/D converter (not 10-bit) | Limited to lower-precision sensing where ±2°C temperature tolerance is acceptable | Select when cost sensitivity outweighs ADC resolution requirements and existing firmware targets 8-bit conversion routines |
| R5F100PLAFB#30 | RL78/G13-based; 32 Kbytes flash, 10-bit A/D × 8 channels, lower active current (120 µA/MHz) | Better suited for battery-powered or energy-certified designs requiring extended sleep modes and larger code footprint | Choose for new designs needing higher integration, lower power, or future scalability beyond 8 Kbytes code size |
Compared with UPD78F9116BMC-5A4-A, UPD78F9114BMC-5A4-A trades ADC precision for legacy compatibility, while R5F100PLAFB#30 offers modern low-power architecture and expanded peripherals at the cost of toolchain migration and higher unit price.
Availability
UPD78F9116BMC-5A4-A is available at Aetrix Electronics and suitable for washing machine control, refrigerator compressor management, cleaner motor drive, and industrial fan controller applications requiring stable component supply and long-term industrial lifecycle support.
Supply support for UPD78F9116BMC-5A4-A 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 consumer markets.
The UPD78F9116BMC-5A4-A belongs to the 78K/0S Series-a family of cost-optimized 8-bit MCUs designed for appliance control, motor management, and sensor-based embedded systems requiring robust analog integration and industrial-grade reliability.
FAQ
What is the maximum ADC sampling rate supported by UPD78F9116BMC-5A4-A?
The UPD78F9116BMC-5A4-A supports up to 50 kSPS (kilo-samples per second) for 10-bit conversions under typical operating conditions. This rate is achievable when using the internal system clock (e.g., 5 MHz) with minimal prescaling, and assumes single-channel sequential sampling without inter-channel settling delays. The actual sustained rate depends on software overhead and channel count in multi-channel sequences.
Does UPD78F9116BMC-5A4-A support in-circuit debugging?
Yes, UPD78F9116BMC-5A4-A supports on-chip debugging via the single-wire debug interface using Renesas E8a or E1 emulators. The debug functionality includes breakpoint setting, register inspection, and real-time memory access without halting peripheral operation - enabling validation of timing-critical ADC and timer behavior during development.
Can UPD78F9116BMC-5A4-A operate from a 3.3 V supply while maintaining full 10-bit ADC accuracy?
Yes, UPD78F9116BMC-5A4-A maintains full 10-bit ADC linearity and monotonicity down to 2.7 V. At 3.3 V, the ADC reference remains internally derived from AVDD, and the specified integral nonlinearity (INL) of ±1 LSB and differential nonlinearity (DNL) of ±0.5 LSB hold across the full temperature range (–40°C to +85°C), provided AVDD = VDD and proper decoupling is implemented.
What is the function of the IC0 pin on UPD78F9116BMC-5A4-A, and how must it be connected?
The IC0 pin on UPD78F9116BMC-5A4-A is an internally connected node requiring external connection to VSS (ground). Per Renesas Data Sheet U12815EJ2V1DS00, failure to tie IC0 directly to VSS may cause analog subsystem instability, including ADC offset drift and inconsistent timer behavior. It is not an I/O pin and must never be left floating or connected to any other net.
Is UPD78F9116BMC-5A4-A qualified for automotive applications?
No, UPD78F9116BMC-5A4-A is classified as a "Standard" quality grade device per Renesas quality policy and is intended for industrial and consumer applications such as home appliances. It is not AEC-Q100 qualified and lacks the extended temperature range, enhanced ESD robustness, and failure-in-time (FIT) metrics required for automotive use. For automotive alternatives, consult Renesas RL78/F1x or RH850 families.
UPD78F9116BMC-5A4-A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- -
- Series:
- -
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- -
- Core Size:
- -
- Speed:
- -
- Connectivity:
- -
- Peripherals:
- -
- Number of I/O:
- -
- Program Memory Size:
- -
- Program Memory Type:
- -
- EEPROM Size:
- -
- RAM Size:
- -
- Voltage - Supply (Vcc/Vdd):
- -
- Data Converters:
- -
- Oscillator Type:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
UPD78F9116BMC-5A4-A FAQ
1.How can I place an order for UPD78F9116BMC-5A4-A through Aetrix?
Please submit a Request for Quotation (RFQ) for UPD78F9116BMC-5A4-A 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 UPD78F9116BMC-5A4-A reliable?
The price and inventory of UPD78F9116BMC-5A4-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPD78F9116BMC-5A4-A is usually 5 days.
3.What payment methods are accepted for UPD78F9116BMC-5A4-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPD78F9116BMC-5A4-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPD78F9116BMC-5A4-A?
UPD78F9116BMC-5A4-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPD78F9116BMC-5A4-A 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 UPD78F9116BMC-5A4-A?
For technical support, including UPD78F9116BMC-5A4-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPD78F9116BMC-5A4-A requirements.
6.How does Aetrix verify that UPD78F9116BMC-5A4-A is sourced from the original manufacturer or authorized distributors?
All UPD78F9116BMC-5A4-A 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 UPD78F9116BMC-5A4-A meets industry standards.
7.What is the process for return or replacement of UPD78F9116BMC-5A4-A?
All UPD78F9116BMC-5A4-A units undergo pre-shipment inspection (PSI). If there is an issue with UPD78F9116BMC-5A4-A, 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 UPD78F9116BMC-5A4-A part is unused and in its original packaging.
Return procedure for UPD78F9116BMC-5A4-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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