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Renesas UPD78F0484GC(S)-GAD-AX
- Part No.:
- UPD78F0484GC(S)-GAD-AX
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
UPD78F0484GC(S)-GAD-AX.pdf
- Description:
- IC MCU 8BIT 48KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,865
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Product details
Overview
UPD78F0484GC(S)-GAD-AX from Renesas Electronics is an 8-bit single-chip microcontroller in the 78K0/LF3 family, featuring integrated LCD controller/driver, 64 KB on-chip Flash memory, 4 KB RAM, and 48-pin LQFP package. It supports 10-bit A/D conversion, UART/SIO, I²C, and real-time counter functions, targeting embedded control in consumer and industrial display systems.
For engineers reviewing the UPD78F0484GC(S)-GAD-AX datasheet, UPD78F0484GC(S)-GAD-AX pinout, UPD78F0484GC(S)-GAD-AX application, or UPD78F0484GC(S)-GAD-AX equivalent, key selection criteria include LCD segment drive capability (up to 192 segments), Flash endurance (10,000 write/erase cycles), operating voltage range (1.8–5.5 V), and industrial temperature grade (−40°C to +85°C).
Technical Context
The UPD78F0484GC(S)-GAD-AX implements the 78K0 CPU core with 16-bit address space, supporting up to 1 MHz operation at 1.8 V and 20 MHz at 5.5 V. Its on-chip LCD controller drives static to 1/4-duty, 1/8-bias configurations using COM0–COM7 and SEG0–SEG23 pins, with programmable VLCD voltage generation via internal charge pump.
Peripheral integration includes a 10-bit, 16-channel A/D converter with scan mode and built-in reference voltage (1.45 V), three 16-bit timer/counters (T0–T2) with capture/compare and PWM output, and dual serial interfaces (UART/SIO and I²C-compatible). Reset and power management features include low-voltage detection (LVD) with selectable threshold (2.7 V or 3.9 V) and watchdog timer.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 78K0 8-bit CISC core, 16-bit address bus, 1–20 MHz operation depending on supply voltage |
| Memory | 64 KB on-chip Flash (10,000 erase/write cycles), 4 KB RAM, 1 KB data flash for EEPROM emulation |
| LCD Support | Up to 192 segments (8 COM × 24 SEG), static to 1/4-duty, 1/8-bias; internal VLCD charge pump |
| A/D Converter | 10-bit resolution, 16 input channels, built-in 1.45 V reference, conversion time 12.5 μs (max) |
| Timers | Three 16-bit timers (T0/T1/T2); T0/T1 support PWM output and input capture; T2 supports real-time counter mode |
| Serial Interfaces | One UART/SIO channel (full-duplex, 8-bit/9-bit, programmable baud rate), one I²C-compatible channel (master/slave, 100/400 kbps) |
| Supply Voltage | 1.8 V to 5.5 V; operates across full range without voltage translation or external regulators |
Pinout & Package
UPD78F0484GC(S)-GAD-AX is housed in a 48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined per Renesas User's Manual Rev.2.00 (R01UH0180EJ0200), Section 1.4.4 and 2.1.4 for 78K0/LF3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core and I/O domain operation; decoupling required per pin |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; accepts external reset pulse or LVD-triggered reset |
| COM0–COM7 | LCD common outputs | Drive up to 8 common lines for multiplexed LCD; support 1/2–1/4 duty cycle |
| SEG0–SEG23 | LCD segment outputs | Drive up to 24 segment lines; combined with COMx to enable 192-segment display |
| P10–P17 | Port 1 bidirectional I/O | 8-bit general-purpose port; P10–P13 also serve as A/D inputs (AN0–AN3) |
| P30–P34 | Port 3 bidirectional I/O | 5-bit port; P30–P33 double as UART/SIO pins (TXD/RXD/CK0/ST0); P34 = INT0 |
| P40–P47 | Port 4 bidirectional I/O | 8-bit port; P40–P43 double as I²C pins (SCL/SDA/INT1/INT2); P44–P47 = T0–T3 timer inputs |
| AVREF, AVSS | Analog reference and ground | Separate analog reference input (1.45 V internal or external) and analog ground reduce noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| LCD Controller/Driver | Integrated hardware LCD controller supports static to 1/4-duty, 1/8-bias displays up to 192 segments without external driver IC |
| Data Flash Emulation | 1 KB on-chip data flash enables EEPROM-like nonvolatile storage for calibration data or user settings with software library support |
| Low-Voltage Detection | Programmable LVD threshold (2.7 V or 3.9 V) triggers interrupt or reset to prevent erratic operation during brownout conditions |
| Real-Time Counter | T2 timer operates in real-time counter mode with 32.768 kHz crystal input, enabling calendar/clock functions independent of main CPU clock |
| Flash Programming Interface | On-chip debug interface supports in-circuit programming via QB-MINI2 emulator; no external programmer required for field updates |
Applications
| Home Appliance Display Control | Industrial Panel Meter |
|---|---|
Use Scenario: Digital thermostat or microwave oven front panel with segmented LCD display and touch/keypad interface. IC Role / Device Role / Timing Role: Main system controller managing keypad scanning, temperature sensing (via A/D), LCD refresh, and relay control. Use Value: Integrated LCD driver eliminates external segment drivers; 1.8 V minimum operation enables direct battery-powered use with alkaline or Li-ion cells. | Use Scenario: DIN-rail mounted voltage/current meter with 4-digit LCD readout and serial communication to SCADA system. IC Role / Device Role / Timing Role: Data acquisition and display controller handling analog sensor inputs, scaling, serial protocol (Modbus RTU over UART), and LCD update. Use Value: 16-channel A/D with built-in reference ensures accurate measurement without external precision references; I²C interface allows connection to external EEPROM or RTC. |
| Portable Medical Device UI | Smart Energy Monitor |
Use Scenario: Handheld blood glucose meter with LCD, button interface, and USB charging circuitry. IC Role / Device Role / Timing Role: System-on-chip managing electrochemical sensor signal conditioning (A/D), user input, LCD display, and low-power sleep/wake scheduling. Use Value: 10,000-cycle Flash endurance supports firmware updates in field; LVD prevents data corruption during battery depletion. | Use Scenario: Residential energy monitor clamping current transformers and measuring line voltage to compute kWh consumption. IC Role / Device Role / Timing Role: Real-time energy calculation engine using A/D sampling, timer-based integration, and LCD display refresh synchronized to AC line cycle. Use Value: Real-time counter (T2) driven by 32.768 kHz crystal provides precise timebase for energy integration; UART enables local configuration and data dump. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller with LCD controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100PLAFB#30 | RL78/G13-based; 32 KB Flash, 4 KB RAM, same 48-pin LQFP, but higher EEMEM endurance (100,000 cycles) | Supports more advanced peripherals (DMA, 12-bit A/D), lower active current (120 μA/MHz), but requires migration from 78K0 toolchain | Preferred for new designs requiring longer data retention or lower power; not drop-in compatible due to instruction set and register map differences |
| UPD78F0483GC(S)-GAD-AX | Same 78K0/LF3 family; 48 KB Flash (vs. 64 KB), identical pinout, peripheral set, and LCD capability | Matches all display and I/O requirements but lacks 16 KB Flash margin for future feature expansion or bootloader space | Valid alternative when firmware size is ≤48 KB and cost optimization is prioritized over headroom |
Compared with UPD78F0484GC(S)-GAD-AX, R5F100PLAFB#30 offers superior power efficiency and data retention but demands software rework, while UPD78F0483GC(S)-GAD-AX provides true pin-and-peripheral compatibility with reduced Flash capacity-ideal for cost-sensitive volume production where code size is tightly constrained.
Availability
UPD78F0484GC(S)-GAD-AX is available at Aetrix Electronics and suitable for home appliance display control, industrial panel meters, portable medical device UI, and smart energy monitors requiring stable component supply and long-term industrial-grade availability.
Supply support for UPD78F0484GC(S)-GAD-AX 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 headquartered in Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The 78K0/LF3 product line delivers cost-optimized 8-bit MCUs with integrated LCD controllers for display-centric embedded applications in consumer and industrial equipment, emphasizing reliability, low-voltage operation, and toolchain maturity.
FAQ
What is the maximum LCD segment count supported by the UPD78F0484GC(S)-GAD-AX?
The UPD78F0484GC(S)-GAD-AX supports up to 192 LCD segments using its integrated controller with 8 COM lines (COM0–COM7) and 24 SEG lines (SEG0–SEG23). This enables static, 1/2-duty, 1/3-duty, or 1/4-duty drive configurations with 1/8-bias, eliminating need for external segment drivers in most display applications.
Does the UPD78F0484GC(S)-GAD-AX include on-chip EEPROM or data retention memory?
The UPD78F0484GC(S)-GAD-AX does not contain dedicated EEPROM, but provides 1 KB of on-chip data flash memory that can be used for EEPROM emulation via Renesas' TM Emulation Library Type01 (U18275E). This enables reliable nonvolatile storage of calibration data, user settings, or counters with 10,000 write/erase cycles.
What development tools are officially supported for the UPD78F0484GC(S)-GAD-AX?
Renesas officially supports the QB-MINI2 on-chip debug emulator with programming function (U18371E) and QB-78K0LX3 in-circuit emulator (U18511E) for the UPD78F0484GC(S)-GAD-AX. Software tools include RA78K0 assembler (Ver.4.01), CC78K0 C compiler (Ver.4.00), and ID78K0-QB debugger (Ver.3.00), all documented in the 78K0/Lx3 User's Manual (R01UH0180EJ0200).
What is the operating temperature range and quality grade of the UPD78F0484GC(S)-GAD-AX?
The UPD78F0484GC(S)-GAD-AX is rated for −40°C to +85°C ambient operation and classified as "Standard" quality grade per Renesas documentation, making it suitable for computers, office equipment, home appliances, industrial robots, and test/measurement equipment-but not for automotive, medical life-support, or aerospace applications without explicit written consent.
Can the UPD78F0484GC(S)-GAD-AX operate from a single 1.8 V supply?
Yes, the UPD78F0484GC(S)-GAD-AX supports full functionality-including CPU execution, Flash programming, A/D conversion, and LCD driving-at 1.8 V supply voltage. Its minimum operating voltage is 1.8 V across the entire industrial temperature range, enabling direct use with single-cell lithium or two-cell alkaline batteries without voltage boosting.
UPD78F0484GC(S)-GAD-AX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-LQFP
- Series:
- 78K0/Lx3
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- 78K/0
- Core Size:
- 8-Bit
- Speed:
- 10MHz
- Connectivity:
- 3-Wire SIO, LINbus, UART/USART
- Peripherals:
- LCD, LVD, POR, PWM, WDT
- Number of I/O:
- 62
- Program Memory Size:
- 48KB (48K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 8x10b SAR
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
UPD78F0484GC(S)-GAD-AX FAQ
1.How can I place an order for UPD78F0484GC(S)-GAD-AX through Aetrix?
Please submit a Request for Quotation (RFQ) for UPD78F0484GC(S)-GAD-AX 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 UPD78F0484GC(S)-GAD-AX reliable?
The price and inventory of UPD78F0484GC(S)-GAD-AX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPD78F0484GC(S)-GAD-AX is usually 5 days.
3.What payment methods are accepted for UPD78F0484GC(S)-GAD-AX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPD78F0484GC(S)-GAD-AX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPD78F0484GC(S)-GAD-AX?
UPD78F0484GC(S)-GAD-AX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPD78F0484GC(S)-GAD-AX 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 UPD78F0484GC(S)-GAD-AX?
For technical support, including UPD78F0484GC(S)-GAD-AX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPD78F0484GC(S)-GAD-AX requirements.
6.How does Aetrix verify that UPD78F0484GC(S)-GAD-AX is sourced from the original manufacturer or authorized distributors?
All UPD78F0484GC(S)-GAD-AX 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 UPD78F0484GC(S)-GAD-AX meets industry standards.
7.What is the process for return or replacement of UPD78F0484GC(S)-GAD-AX?
All UPD78F0484GC(S)-GAD-AX units undergo pre-shipment inspection (PSI). If there is an issue with UPD78F0484GC(S)-GAD-AX, 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 UPD78F0484GC(S)-GAD-AX part is unused and in its original packaging.
Return procedure for UPD78F0484GC(S)-GAD-AX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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