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Renesas UPD78F0485GK(S)-GAK-M1-AX
- Part No.:
- UPD78F0485GK(S)-GAK-M1-AX
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
UPD78F0485GK(S)-GAK-M1-AX.pdf
- Description:
- IC MCU 8BIT 60KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,199
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Product details
Overview
UPD78F0485GK(S)-GAK-M1-AX from Renesas Electronics is an 8-bit single-chip microcontroller in the 78K0/LF3 family, integrating an LCD controller/driver, 64 KB on-chip Flash memory, 4 KB RAM, and a 10-bit A/D converter. It operates at up to 20 MHz, supports 100-pin LQFP packaging, and targets embedded control applications requiring integrated display driving and analog sensing - such as industrial HMIs and portable medical devices.
For engineers reviewing the UPD78F0485GK(S)-GAK-M1-AX datasheet, UPD78F0485GK(S)-GAK-M1-AX pinout, UPD78F0485GK(S)-GAK-M1-AX application, or UPD78F0485GK(S)-GAK-M1-AX equivalent, key selection criteria include its LCD segment drive capability (up to 288 segments), Flash endurance (10,000 write/erase cycles), operating voltage range (1.8–5.5 V), and built-in real-time counter with low-voltage operation support.
Technical Context
The UPD78F0485GK(S)-GAK-M1-AX implements the 78K0 CPU core with 16-bit address space and supports instruction execution in one or two clock cycles. Its on-chip peripherals include a 15-channel 10-bit A/D converter with programmable sampling time, a 16-bit timer array unit (TAU) with PWM output capability, and a serial interface supporting UART, CSI, and I²C protocols.
It features a dedicated LCD controller/driver supporting static to 1/4-duty, 1/3-bias configurations with internal charge pump and voltage follower for stable contrast control. The device includes a power-on reset (POR), voltage detector (LVD), and watchdog timer (WDT) - all configurable via special function registers without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 78K0 8-bit CISC core, executes most instructions in 1–2 clocks at 20 MHz max |
| Flash Memory | 64 KB on-chip Flash with 10,000 write/erase cycles; supports self-programming |
| RAM Size | 4 KB on-chip RAM, accessible in single-cycle read/write |
| LCD Drive | Supports up to 288 segments (static to 1/4-duty); integrated bias generator and charge pump |
| A/D Converter | 10-bit resolution, 15 channels, programmable conversion time down to 1.2 μs |
| Operating Voltage | 1.8 V to 5.5 V - enables direct battery operation (e.g., 2×AA or Li-ion) without regulators |
| Package | 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, lead-free |
Pinout & Package
UPD78F0485GK(S)-GAK-M1-AX is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per Renesas' 78K0/LF3 User's Manual Rev.2.00 (Feb 2011), Section 1.4.4 and 2.1.4.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10–P17 | Port 1 bidirectional I/O | Configurable as general-purpose I/O or alternate functions including UART TX/RX and timer inputs |
| P40–P47 | Port 4 bidirectional I/O | Serves as segment driver outputs (SEG0–SEG7) for LCD when LCDEN=1 |
| COM0–COM7 | LCD common electrode outputs | Drive up to 8 commons; support 1/2–1/4 duty LCD panels with internal bias generation |
| VLC0–VLC3 | LCD voltage control inputs | Set LCD bias voltage (VLCD) via external resistive divider or internal charge pump selection |
| RESET | Active-low reset input | Asynchronous reset; internal pull-up; accepts min. 100 ns pulse width for reliable deassertion |
| REGC | Internal regulator control | Enables/disables on-chip voltage regulator for LCD supply; requires external capacitor (1 μF) |
Key Features
| Feature | Design Value |
|---|---|
| LCD controller with integrated charge pump | Eliminates need for external LCD bias IC; supports wide VLCD range (2.3–6.0 V) with ±1% regulation |
| Real-time counter (RTC) with calendar mode | Operates continuously during STOP mode using sub-clock (32.768 kHz); retains time/date across power cycles |
| Low-voltage detection (LVD) | Four selectable trip points (2.4 V, 2.7 V, 3.0 V, 3.3 V); generates interrupt or reset on threshold violation |
| On-chip debug interface | Single-wire background debugger (BDM) support via P10 pin; no external emulator required for basic firmware load/debug |
| Flash memory security | Lock bits prevent unauthorized read-out of program memory; erase protection prevents accidental reprogramming |
Applications
| Industrial HMI Panels | Portable Medical Devices |
|---|---|
Use Scenario: Standalone operator interface for PLC-controlled machinery with local parameter adjustment and status display. IC Role / Device Role / Timing Role: Main system controller executing UI logic, driving segmented LCD, sampling sensor inputs, and managing serial communication with host PLC. Use Value: Integrated LCD driver reduces BOM count by eliminating external segment drivers; 64 KB Flash accommodates multi-language UI firmware and calibration tables. | Use Scenario: Battery-powered glucose meter with alphanumeric LCD, button interface, and analog front-end for test strip signal conditioning. IC Role / Device Role / Timing Role: System-on-chip managing strip insertion detection, A/D conversion of electrochemical current, LCD refresh, and data logging to internal Flash. Use Value: 1.8 V minimum operating voltage extends battery life; RTC with calendar enables timestamped result storage; LVD ensures accurate readings down to end-of-battery life. |
| Smart Energy Meters | Home Appliance Control Boards |
Use Scenario: Residential electricity meter with LCD display, tamper detection, and infrared communication for utility readout. IC Role / Device Role / Timing Role: Primary MCU handling metrology data aggregation, LCD update scheduling, IR modulation, and secure firmware updates. Use Value: 15-channel A/D supports multiple sensor inputs (voltage, current, temperature); Flash security prevents firmware tampering; LCD driver supports custom icon rendering. | Use Scenario: Washing machine main control board requiring motor timing, water level sensing, user interface, and safety monitoring. IC Role / Device Role / Timing Role: Central controller coordinating motor drive signals (via TAU PWM), reading pressure/temperature sensors, updating LED/LCD display, and enforcing door-lock interlocks. Use Value: TAU supports precise 3-phase motor commutation timing; built-in WDT and LVD meet IEC 60730 Class B requirements; 4 KB RAM suffices for real-time state machine execution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller with integrated LCD driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10PLGKSP#30 | RL78/G14 core; 64 KB Flash, 5.5 KB RAM; same 100-pin LQFP but different pinout and register map | Higher code efficiency (16-bit core), lower active current (125 μA/MHz), but requires PCB redesign due to non-pin-compatible layout | Select for new designs prioritizing ultra-low power and toolchain modernization; not drop-in replaceable. |
| UPD78F0533GK-GAK-AX | Same 78K0/LF3 family; 96 KB Flash, 6 KB RAM, identical pinout and peripheral set except extended A/D channel count (21 ch) | Direct software-compatible upgrade path; supports larger firmware images and additional analog inputs without hardware change | Choose when future firmware expansion or extra sensor channels are anticipated; pin-to-pin and code-compatible. |
Compared with UPD78F0485GK(S)-GAK-M1-AX, R5F10PLGKSP#30 offers superior energy efficiency and modern toolchain support but mandates PCB revision, while UPD78F0533GK-GAK-AX provides seamless scalability within the same footprint and software ecosystem.
Availability
UPD78F0485GK(S)-GAK-M1-AX is available at Aetrix Electronics and suitable for industrial HMIs, portable medical devices, and smart energy meters requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.
Supply support for UPD78F0485GK(S)-GAK-M1-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 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 applications demanding display integration, low-voltage operation, and high peripheral integration in compact form factors.
FAQ
What is the maximum operating frequency of the UPD78F0485GK(S)-GAK-M1-AX?
The UPD78F0485GK(S)-GAK-M1-AX supports a maximum CPU clock frequency of 20 MHz when powered at 3.0–5.5 V. At 1.8–2.7 V, the maximum allowed frequency is reduced to 10 MHz to ensure timing compliance and stability across voltage ranges. This dual-speed specification allows flexible power/performance trade-offs in battery-operated systems.
Does the UPD78F0485GK(S)-GAK-M1-AX support real-time clock functionality?
Yes, the UPD78F0485GK(S)-GAK-M1-AX includes a dedicated real-time counter (RTC) module that operates independently using a 32.768 kHz sub-clock oscillator. It supports calendar mode (year/month/day/hour/minute/second) and continues running in STOP mode, enabling timestamping and alarm functions without main CPU intervention - critical for data-logging applications using UPD78F0485GK(S)-GAK-M1-AX.
How many LCD segments can the UPD78F0485GK(S)-GAK-M1-AX drive?
The UPD78F0485GK(S)-GAK-M1-AX supports up to 288 LCD segments in configurations ranging from static to 1/4-duty drive with 1/3-bias. This is achieved using eight COM outputs (COM0–COM7) and up to 36 SEG pins (including P40–P47 and other port pins configured as segment drivers). The internal charge pump and voltage follower ensure stable contrast across varying temperatures and battery voltages in UPD78F0485GK(S)-GAK-M1-AX designs.
Is the UPD78F0485GK(S)-GAK-M1-AX pin-compatible with other 78K0/LF3 devices?
Yes, the UPD78F0485GK(S)-GAK-M1-AX shares the same 100-pin LQFP package and pinout with other members of the 78K0/LF3 group, including UPD78F0471 through UPD78F0495. Peripheral pin assignments (e.g., UART, TAU, A/D inputs) are consistent across this family, enabling hardware reuse and firmware portability - a key design advantage when selecting UPD78F0485GK(S)-GAK-M1-AX for scalable product families.
What development tools are supported for the UPD78F0485GK(S)-GAK-M1-AX?
Renesas provides full toolchain support for UPD78F0485GK(S)-GAK-M1-AX, including the RA78K0 assembler, CC78K0 C compiler, ID78K0-QB integrated debugger, and QB-MINI2 on-chip debug emulator. The QB-78K0LX3 in-circuit emulator enables real-time trace and breakpoint debugging. All tools are documented in the 78K0/Lx3 User's Manual (R01UH0180EJ0200) and compatible with UPD78F0485GK(S)-GAK-M1-AX's memory map and peripheral registers.
UPD78F0485GK(S)-GAK-M1-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:
- 60KB (60K 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:
UPD78F0485GK(S)-GAK-M1-AX FAQ
1.How can I place an order for UPD78F0485GK(S)-GAK-M1-AX through Aetrix?
Please submit a Request for Quotation (RFQ) for UPD78F0485GK(S)-GAK-M1-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 UPD78F0485GK(S)-GAK-M1-AX reliable?
The price and inventory of UPD78F0485GK(S)-GAK-M1-AX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPD78F0485GK(S)-GAK-M1-AX is usually 5 days.
3.What payment methods are accepted for UPD78F0485GK(S)-GAK-M1-AX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPD78F0485GK(S)-GAK-M1-AX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPD78F0485GK(S)-GAK-M1-AX?
UPD78F0485GK(S)-GAK-M1-AX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPD78F0485GK(S)-GAK-M1-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 UPD78F0485GK(S)-GAK-M1-AX?
For technical support, including UPD78F0485GK(S)-GAK-M1-AX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPD78F0485GK(S)-GAK-M1-AX requirements.
6.How does Aetrix verify that UPD78F0485GK(S)-GAK-M1-AX is sourced from the original manufacturer or authorized distributors?
All UPD78F0485GK(S)-GAK-M1-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 UPD78F0485GK(S)-GAK-M1-AX meets industry standards.
7.What is the process for return or replacement of UPD78F0485GK(S)-GAK-M1-AX?
All UPD78F0485GK(S)-GAK-M1-AX units undergo pre-shipment inspection (PSI). If there is an issue with UPD78F0485GK(S)-GAK-M1-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 UPD78F0485GK(S)-GAK-M1-AX part is unused and in its original packaging.
Return procedure for UPD78F0485GK(S)-GAK-M1-AX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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