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Renesas UPD78F0452GK-GAJ-E2-AX
- Part No.:
- UPD78F0452GK-GAJ-E2-AX
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
UPD78F0452GK-GAJ-E2-AX.pdf
- Description:
- IC MCU 8BIT 24KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,593
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Product details
Overview
UPD78F0452GK-GAJ-E2-AX from Renesas Electronics is an 8-bit single-chip microcontroller in the 78K0/LE3 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 5V operation, and targets embedded control applications with integrated display interfaces such as industrial panel meters and portable medical devices.
For engineers reviewing the UPD78F0452GK-GAJ-E2-AX datasheet, UPD78F0452GK-GAJ-E2-AX pinout, UPD78F0452GK-GAJ-E2-AX application, or UPD78F0452GK-GAJ-E2-AX equivalent, key selection criteria include LCD segment drive capability (up to 192 segments), Flash endurance (10,000 write/erase cycles), operating temperature range (−40°C to +85°C), and support for on-chip debug via QB-MINI2.
Technical Context
The UPD78F0452GK-GAJ-E2-AX implements the 78K0 CPU core with 16-bit addressing, supporting both 8-bit and 16-bit operations. Its internal architecture includes a dedicated LCD controller with programmable bias and frame frequency, dual clock sources (main high-speed oscillator and sub-clock for RTC), and multiple peripheral modules including UART, I²C-compatible serial interface, and 16-bit timer arrays.
It features a segmented LCD driver capable of static, 2-, 3-, or 4-multiplex operation with built-in charge pump for VLCD generation, and integrates a 10-bit successive-approximation A/D converter with up to 16 input channels and scan mode. The device uses Renesas' SuperFlash® technology for reliable Flash programming and supports self-programming during application execution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 78K0 8-bit CISC core with 16-bit addressing; enables compact code size and deterministic interrupt latency for real-time control. |
| Flash Memory | 64 KB on-chip Flash (SuperFlash®); supports 10,000 erase/write cycles and 20-year data retention at 85°C. |
| RAM | 4 KB on-chip RAM; used for variables, stack, and LCD RAM buffer without external memory interface. |
| LCD Drive | Up to 192 segments × 4 commons; integrated charge pump and programmable bias allow direct connection to segment-type LCDs without external components. |
| A/D Converter | 10-bit SAR ADC with 16-channel multiplexer and scan mode; supports conversion times down to 1.2 μs per channel for sensor monitoring. |
| Operating Voltage | 4.0 V to 5.5 V; compatible with standard 5V industrial logic and analog supply rails. |
| Temperature Range | −40°C to +85°C; qualified for industrial-grade operation in non-automotive embedded environments. |
Pinout & Package
UPD78F0452GK-GAJ-E2-AX is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined per Renesas User's Manual Rev.2.00 (R01UH0180EJ0200), Section 2.1.3 (78K0/LE3 Pin Function List) and Section 1.4.3 (Pin Configuration).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core and I/O rail decoupling; critical for noise immunity in mixed-signal LCD systems. |
| COM0–COM7 | LCD common outputs | Drive up to 8 LCD commons in 4-mux mode; support internal bias generation and frame inversion timing control. |
| SEG0–SEG191 | LCD segment outputs | Direct drive of up to 192 segments; each pin configurable as segment or general-purpose I/O via SFR settings. |
| P10–P15, P20–P27, etc. | Multi-function I/O ports | Programmable as TTL/CMOS inputs or push-pull/open-drain outputs; support peripheral functions like UART TX/RX, I²C SDA/SCL, and timer capture/compare. |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; accepts external reset signal or watchdog timeout assertion to initialize CPU and peripherals. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated LCD controller/driver | Eliminates external LCD driver IC and bias circuitry; reduces BOM count and PCB area in display-integrated designs. |
| On-chip 10-bit A/D converter | Enables direct analog sensor interfacing (e.g., temperature, voltage, current) without external ADC, simplifying signal chain design. |
| Self-programmable Flash memory | Supports firmware updates in-system via UART or on-chip bootloader; allows field upgrades without dedicated programmer hardware. |
| Low-power real-time counter (RTC) | Operates from sub-clock (32.768 kHz) with battery backup support; provides accurate timekeeping during main power-off states. |
| Hardware UART and I²C interface | Reduces software overhead for communication with host controllers or sensors; ensures deterministic timing for protocol compliance. |
Applications
| Industrial Panel Meters | Portable Medical Devices |
|---|---|
Use Scenario: Digital multimeters and process monitors requiring numeric and bar-graph LCD displays with local sensor acquisition. IC Role / Device Role / Timing Role: Central controller managing ADC sampling, LCD refresh (60 Hz frame rate), and button input scanning. Use Value: Integrated LCD driver and 10-bit ADC eliminate discrete driver and external ADC, reducing component count by ≥3 and enabling compact 4-layer PCB layout. | Use Scenario: Blood glucose meters and pulse oximeters with monochrome segment LCD and analog front-end sensing. IC Role / Device Role / Timing Role: System-on-chip handling electrochemical sensor signal conditioning, LCD segment mapping, and USB/HID communication via external bridge. Use Value: On-chip charge pump generates VLCD from 5V supply, removing need for external DC-DC converter and improving power efficiency in battery-powered operation. |
| Home Appliance Control Panels | Building Automation Sensors |
Use Scenario: Microwave oven and HVAC control panels with multi-segment LCD status display and keypad interface. IC Role / Device Role / Timing Role: Real-time coordinator of user input, display update, relay/timer control, and safety interlock monitoring. Use Value: 64 KB Flash accommodates full UI firmware with localization strings and calibration tables; 4 KB RAM supports dynamic menu state and EEPROM emulation. | Use Scenario: CO₂ and humidity sensors in smart thermostats with LCD readout and wired RS-485 communication. IC Role / Device Role / Timing Role: Sensor hub aggregating analog inputs, driving LCD, and formatting Modbus RTU frames over UART-to-RS485 transceiver. Use Value: Hardware UART with framing error detection and 16-bit timer-based baud rate generation ensure robust communication in electrically noisy building environments. |
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 |
|---|---|---|---|
| R5F100PLGSP#30 | RL78/G13-based; 32 KB Flash, 4 KB RAM, same 100-pin LQFP but different pinout; no on-chip charge pump - requires external VLCD generator. | Lower Flash capacity limits complex UI storage; external VLCD circuit increases BOM cost and layout complexity. | Select when migrating to RL78 platform for lower power or future scalability; verify pin reassignment and LCD bias redesign. |
| UPD78F0533GC-GAD-AX | 78K0/LF3 variant; 128 KB Flash, 8 KB RAM, same LCD segment count (192), but adds CAN interface and higher max clock (24 MHz). | Includes CAN physical layer support unsuitable for pure LCD/display-only applications; larger die increases unit cost. | Select only if CAN bus integration is required; otherwise over-spec'd for basic display+sensor use cases. |
Compared with UPD78F0452GK-GAJ-E2-AX, R5F100PLGSP#30 offers newer architecture and lower active current but lacks integrated VLCD generation, while UPD78F0533GC-GAD-AX provides higher memory and CAN capability at increased cost and complexity-neither is pin-compatible, requiring PCB redesign.
Availability
UPD78F0452GK-GAJ-E2-AX is available at Aetrix Electronics and suitable for industrial panel meters, portable medical devices, and home appliance control panels requiring stable component supply and long-term production continuity.
Supply support for UPD78F0452GK-GAJ-E2-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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.
The 78K0/LE3 product line delivers cost-optimized 8-bit MCUs with integrated LCD drivers and analog peripherals for display-centric embedded systems in industrial and consumer equipment.
FAQ
What is the maximum LCD segment count supported by the UPD78F0452GK-GAJ-E2-AX?
The UPD78F0452GK-GAJ-E2-AX supports up to 192 LCD segments in combination with up to 8 commons, configurable for static, 2-, 3-, or 4-multiplex operation. This is implemented via dedicated on-chip LCD controller circuitry with programmable bias and frame frequency registers, enabling direct drive of segment-type displays without external driver ICs.
Does the UPD78F0452GK-GAJ-E2-AX include an on-chip voltage regulator for LCD bias generation?
Yes, the UPD78F0452GK-GAJ-E2-AX integrates a charge pump circuit that generates VLCD from the main VDD supply (4.0–5.5 V), eliminating the need for external DC-DC converters. This feature is confirmed in Section 2.2.14–2.2.15 of the R01UH0180EJ0200 User's Manual and enables simplified power design for segment LCD applications.
What development tools are officially supported for the UPD78F0452GK-GAJ-E2-AX?
Renesas officially supports the QB-MINI2 on-chip debug emulator with programming function (U18371E) and the RA78K0 assembler (Ver. 4.01) and CC78K0 C compiler (Ver. 4.00) for the UPD78F0452GK-GAJ-E2-AX. These tools enable full debugging, Flash programming, and real-time trace capabilities as documented in the 78K0/Lx3 Application Notes and User's Manual Rev.2.00.
Is the UPD78F0452GK-GAJ-E2-AX qualified for automotive applications?
No, the UPD78F0452GK-GAJ-E2-AX is rated for Standard quality grade per Renesas documentation, targeting industrial, office, and consumer equipment-not automotive or safety-critical systems. Its −40°C to +85°C operating range and qualification scope exclude AEC-Q100 compliance, and Renesas explicitly restricts its use in transportation equipment without prior written consent.
What is the Flash endurance specification for the UPD78F0452GK-GAJ-E2-AX?
The UPD78F0452GK-GAJ-E2-AX specifies 10,000 write/erase cycles for its 64 KB on-chip Flash memory, with guaranteed 20-year data retention at +85°C ambient temperature. This endurance rating is defined in the Electrical Characteristics section of the official Renesas datasheet and applies under standard programming conditions using the on-chip self-programming functionality.
UPD78F0452GK-GAJ-E2-AX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- Series:
- 78K0/Lx3
- Packaging:
- Tape & Reel (TR)
- 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:
- 46
- Program Memory Size:
- 24KB (24K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K 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:
UPD78F0452GK-GAJ-E2-AX FAQ
1.How can I place an order for UPD78F0452GK-GAJ-E2-AX through Aetrix?
Please submit a Request for Quotation (RFQ) for UPD78F0452GK-GAJ-E2-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 UPD78F0452GK-GAJ-E2-AX reliable?
The price and inventory of UPD78F0452GK-GAJ-E2-AX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPD78F0452GK-GAJ-E2-AX is usually 5 days.
3.What payment methods are accepted for UPD78F0452GK-GAJ-E2-AX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPD78F0452GK-GAJ-E2-AX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPD78F0452GK-GAJ-E2-AX?
UPD78F0452GK-GAJ-E2-AX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPD78F0452GK-GAJ-E2-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 UPD78F0452GK-GAJ-E2-AX?
For technical support, including UPD78F0452GK-GAJ-E2-AX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPD78F0452GK-GAJ-E2-AX requirements.
6.How does Aetrix verify that UPD78F0452GK-GAJ-E2-AX is sourced from the original manufacturer or authorized distributors?
All UPD78F0452GK-GAJ-E2-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 UPD78F0452GK-GAJ-E2-AX meets industry standards.
7.What is the process for return or replacement of UPD78F0452GK-GAJ-E2-AX?
All UPD78F0452GK-GAJ-E2-AX units undergo pre-shipment inspection (PSI). If there is an issue with UPD78F0452GK-GAJ-E2-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 UPD78F0452GK-GAJ-E2-AX part is unused and in its original packaging.
Return procedure for UPD78F0452GK-GAJ-E2-AX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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