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Renesas UPD78F0034AYGC-8BS-A
- Part No.:
- UPD78F0034AYGC-8BS-A
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
UPD78F0034AYGC-8BS-A.pdf
- Description:
- IC MCU
- Quantity:
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Inventory:2,250
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Product details
Overview
UPD78F0034AYGC-8BS-A from Renesas Electronics is a flash-based 8-bit microcontroller in the 78K/0 Series, designed for embedded control in resource-constrained systems. It integrates 32 KB on-chip flash ROM, 1024 bytes of high-speed RAM, a 10-bit 8-channel A/D converter (AVDD = 2.7–5.5 V), three serial interfaces (two 3-wire, one UART), and five timer channels. It operates across 1.8–5.5 V and supports industrial temperature range (−40 to +85°C), targeting cost-sensitive consumer and office automation applications.
For engineers reviewing the UPD78F0034AYGC-8BS-A datasheet, UPD78F0034AYGC-8BS-A pinout, UPD78F0034AYGC-8BS-A application, or UPD78F0034AYGC-8BS-A equivalent, key selection criteria include its 64-pin LQFP package, 51 I/O pins (including four 5-V-tolerant N-ch open-drain outputs), minimum instruction cycle of 0.24 µs at 8.38 MHz, external memory expansion capability (64 KB), and dual power domain support (VDD0/VDD1, VSS0/VSS1) for noise-sensitive analog-digital coexistence.
Technical Context
The UPD78F0034AYGC-8BS-A implements the 78K/0 CPU core with 16-bit arithmetic, BCD adjustment, and bit-manipulation instructions. Its peripheral set includes a 16-bit timer/event counter (TM0) with capture/compare, two 8-bit timers (TM50/TM51) supporting PWM output, a watchdog timer, and a watch timer - all synchronized to either main (8.38 MHz crystal) or subsystem (32.768 kHz crystal) clock domains.
It features segregated analog and digital power/ground domains (AVDD/AVSS, VDD0/VSS0, VDD1/VSS1), enabling low-noise A/D conversion alongside digital processing. The 10-bit A/D converter supports software- or hardware-triggered (via ADTRG on P03) sampling, with reference voltage selectable via AVREF pin, and operates down to 1.8 V system supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 78K/0 8-bit CPU with 16-bit ALU, 32 general-purpose registers (4 banks) |
| Flash Memory | 32 KB on-chip - enables field firmware updates without external memory |
| RAM | 1024 bytes high-speed on-chip RAM - sufficient for real-time control stacks and buffers |
| A/D Converter | 10-bit resolution × 8 channels - supports precision sensor interfacing with 2.7–5.5 V AVDD range |
| Serial Interfaces | 3 total: 2× 3-wire synchronous, 1× UART - enables multi-peripheral communication without external logic |
| Timers | 5 channels: 1× 16-bit (capture/compare), 2× 8-bit (PWM-capable), 1× watch, 1× watchdog - meets timing-critical motor/signal control needs |
| Supply Voltage | 1.8–5.5 V operation - allows direct interface with both legacy 5 V and modern low-voltage peripherals |
| Operating Temperature | −40 to +85°C - certified for industrial-grade deployment in office equipment and home appliances |
Pinout & Package
UPD78F0034AYGC-8BS-A is housed in a 64-pin plastic LQFP (12 × 12 mm, 0.5 mm pitch), compliant with JEDEC MO-220. The package supports fine-pitch PCB assembly and provides dedicated analog/digital power and ground pins for noise isolation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10–P17/ANI0–ANI7 | Analog input channels | Direct connection points for sensors; require AVDD/AVSS decoupling and AVREF stability for 10-bit accuracy |
| P03/INTP3/ADTRG | Shared interrupt input / A/D trigger | Hardware-synchronized sampling initiation - eliminates software latency in time-critical measurements |
| P23/RxD0, P24/TxD0, P25/ASCK0 | UART physical layer | Full-duplex asynchronous serial interface with independent clock input - supports RS-232/RS-485 level-shifting |
| P70/TI00/TO0, P72/TI50/TO50, P73/TI51/TO51 | Timer I/O pins | Configurable as input (external count/capture) or output (PWM/timing signal) - enables motor phase control or pulse generation |
| VDD0, VSS0, VDD1, VSS1 | Dual power/ground domains | Separate supplies for port logic (VDD0/VSS0) and internal circuitry (VDD1/VSS1) - reduces digital switching noise coupling into analog sections |
| AVDD, AVSS, AVREF | Analog subsystem supply | Isolated analog power rail with dedicated ground and reference - essential for achieving full 10-bit A/D linearity and SNR |
Key Features
| Feature | Design Value |
|---|---|
| On-chip 32 KB Flash ROM | Enables in-system programming and firmware revision without external memory or bootloaders |
| 10-bit 8-channel A/D Converter | Supports simultaneous sampling of multiple analog sensors (e.g., temperature, voltage, current) with <1 LSB INL |
| Dual Clock Domains | Main system clock (8.38 MHz crystal) and subsystem clock (32.768 kHz crystal) allow low-power RTC + high-speed processing concurrently |
| 51 Programmable I/O Pins | Includes 4× 5-V-tolerant N-ch open-drain outputs - directly drives LEDs, relays, or I²C bus without external transistors |
| External Memory Expansion | 64 KB address space with RD/WR/ASTB/WAIT control signals - supports adding SRAM, EPROM, or display controllers |
| Low-Voltage Operation (1.8 V) | Full functionality at 1.8 V supply - extends battery life in portable devices and reduces thermal load in dense layouts |
Applications
| Home Appliance Control | Office Automation Device |
|---|---|
Use Scenario: Microcontroller in microwave oven control panel managing keypad scan, display driver, cooking timer, and safety interlock monitoring. IC Role / Device Role / Timing Role: Central control unit executing real-time state machine, reading analog thermistor inputs, generating buzzer alerts, and driving segmented LCD via port multiplexing. Use Value: Integrated 10-bit A/D and 51 I/O eliminate external ADC and GPIO expanders; 32 KB flash accommodates complex UI logic and safety certification code. |
Use Scenario: Embedded controller in document scanner managing paper feed motor, CIS image sensor interface, LED illumination, and USB host bridge. IC Role / Device Role / Timing Role: System coordinator handling sensor-triggered event sequencing, PWM-controlled LED brightness, and UART-based status reporting to host PC. Use Value: Dual clock domains enable precise motor timing (8.38 MHz) while maintaining RTC (32.768 kHz); UART and 3-wire interfaces simplify connectivity to imaging ICs and USB PHY. |
| Car Audio Front Panel | Industrial Sensor Node |
Use Scenario: User interface processor in automotive head unit controlling rotary encoder, button matrix, OLED display backlight, and audio codec configuration. IC Role / Device Role / Timing Role: Dedicated UI controller offloading main SoC; reads mechanical inputs, generates PWM for display dimming, and communicates via UART/I²C. Use Value: 4× 5-V-tolerant open-drain outputs drive legacy automotive switches; −40 to +85°C rating ensures reliability in vehicle cabin environments. |
Use Scenario: Standalone environmental monitor collecting temperature, humidity, and air quality data for wireless transmission in factory settings. IC Role / Device Role / Timing Role: Data acquisition engine performing periodic A/D conversions, timestamping readings with watch timer, and buffering results in on-chip RAM. Use Value: On-chip 10-bit A/D with AVREF pin enables calibrated sensor readings; 1.8–5.5 V supply range supports direct integration with 3.3 V or 5 V sensor modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100LEAFB#30 | RL78/G13 core, 32 KB flash, 4 KB RAM, 10-bit A/D × 12 ch, 1.6–5.5 V | Higher RAM, more A/D channels, integrated LIN transceiver; lacks external memory bus | Preferred for new designs requiring larger data buffers or LIN communication; not pin-compatible |
| UPD78F0032AGC-8BS-A | Same 78K/0 core, 16 KB flash, 512 bytes RAM, identical peripherals and pinout | Lower memory capacity; suitable for simpler control tasks with smaller firmware footprints | Drop-in replacement where 16 KB flash suffices; shares same LQFP-64 footprint and register map |
Compared with UPD78F0034AYGC-8BS-A, the R5F100LEAFB#30 offers enhanced integration (LIN, larger RAM) but sacrifices external memory expansion, while UPD78F0032AGC-8BS-A provides identical compatibility at reduced memory - making it ideal for cost-optimized derivatives of existing designs.
Availability
UPD78F0034AYGC-8BS-A is available at Aetrix Electronics and suitable for home appliance control, office automation device development, car audio front panels, and industrial sensor node deployments requiring stable component supply and long-term manufacturing continuity.
Supply support for UPD78F0034AYGC-8BS-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, power, and SoC solutions for industrial, automotive, and enterprise applications.
The UPD78F0034AYGC-8BS-A belongs to the 78K/0 Series - a mature, cost-optimized 8-bit MCU family designed for high-volume, reliability-critical embedded control in consumer and industrial equipment.
FAQ
What is the maximum operating frequency of the UPD78F0034AYGC-8BS-A?
The UPD78F0034AYGC-8BS-A achieves a minimum instruction execution time of 0.24 µs when operating at its nominal main system clock frequency of 8.38 MHz. This corresponds to a maximum effective core speed of approximately 4.19 million instructions per second (MIPS) under typical conditions. The device also supports a 32.768 kHz subsystem clock for low-power timing functions.
Does the UPD78F0034AYGC-8BS-A support external memory expansion?
Yes, the UPD78F0034AYGC-8BS-A supports up to 64 KB of external memory space using its multiplexed address/data bus (AD0–AD7, A8–A15), along with dedicated control signals: RD (read strobe), WR (write strobe), ASTB (address latch enable), and WAIT (wait insertion). This enables connection to external SRAM, EPROM, or peripheral controllers without additional glue logic.
How many analog input channels does the UPD78F0034AYGC-8BS-A have, and what is their resolution?
The UPD78F0034AYGC-8BS-A integrates a single 10-bit successive-approximation A/D converter with eight analog input channels (ANI0–ANI7), accessible via P10–P17. It operates with AVDD between 2.7 V and 5.5 V and accepts an external reference voltage on the AVREF pin, enabling calibrated measurements across varying supply conditions.
What package type is used for the UPD78F0034AYGC-8BS-A?
The UPD78F0034AYGC-8BS-A is supplied in a 64-pin plastic LQFP (12 × 12 mm, 0.5 mm pitch), designated by the suffix "-8BS-A" in the part number. This package features exposed pad thermal enhancement and is compatible with standard reflow soldering processes used in high-volume PCB assembly.
Can the UPD78F0034AYGC-8BS-A operate from a 1.8 V supply?
Yes, the UPD78F0034AYGC-8BS-A is fully specified to operate across a supply voltage range of 1.8 V to 5.5 V for VDD0 and VDD1. At 1.8 V, it maintains full functionality including flash programming, A/D conversion, and all peripheral operation - making it suitable for battery-powered and energy-efficient applications.
UPD78F0034AYGC-8BS-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:
UPD78F0034AYGC-8BS-A FAQ
1.How can I place an order for UPD78F0034AYGC-8BS-A through Aetrix?
Please submit a Request for Quotation (RFQ) for UPD78F0034AYGC-8BS-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 UPD78F0034AYGC-8BS-A reliable?
The price and inventory of UPD78F0034AYGC-8BS-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPD78F0034AYGC-8BS-A is usually 5 days.
3.What payment methods are accepted for UPD78F0034AYGC-8BS-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPD78F0034AYGC-8BS-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPD78F0034AYGC-8BS-A?
UPD78F0034AYGC-8BS-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPD78F0034AYGC-8BS-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 UPD78F0034AYGC-8BS-A?
For technical support, including UPD78F0034AYGC-8BS-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPD78F0034AYGC-8BS-A requirements.
6.How does Aetrix verify that UPD78F0034AYGC-8BS-A is sourced from the original manufacturer or authorized distributors?
All UPD78F0034AYGC-8BS-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 UPD78F0034AYGC-8BS-A meets industry standards.
7.What is the process for return or replacement of UPD78F0034AYGC-8BS-A?
All UPD78F0034AYGC-8BS-A units undergo pre-shipment inspection (PSI). If there is an issue with UPD78F0034AYGC-8BS-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 UPD78F0034AYGC-8BS-A part is unused and in its original packaging.
Return procedure for UPD78F0034AYGC-8BS-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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