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Renesas UPD78F0451GA-HAB-AX
- Part No.:
- UPD78F0451GA-HAB-AX
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-TQFP
- Datasheet:
-
UPD78F0451GA-HAB-AX.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,927
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Product details
Overview
UPD78F0451GA-HAB-AX from Renesas Electronics is an 8-bit single-chip microcontroller in the 78K0/LE3 family, featuring integrated LCD controller/driver, 64 KB on-chip Flash memory, 4 KB RAM, and 39 I/O pins. It operates at up to 20 MHz, supports 10-bit ADC (8 channels), and targets embedded control applications with display interfaces such as industrial HMIs and portable instrumentation.
For engineers reviewing the UPD78F0451GA-HAB-AX datasheet, UPD78F0451GA-HAB-AX pinout, UPD78F0451GA-HAB-AX application, or UPD78F0451GA-HAB-AX equivalent, key selection criteria include LCD segment drive capability (up to 128 segments), low-power operation modes (HALT, STOP), and compatibility with RA78K0 toolchain for C/assembly development.
Technical Context
The UPD78F0451GA-HAB-AX implements the 78K0 CPU core with 16-bit address space, Harvard architecture, and instruction set compatible with earlier 78K0 devices. It integrates a 10-bit successive-approximation ADC with internal reference, programmable LCD bias generator (VLCD), and dual clock system (main high-speed oscillator + sub-clock for RTC).
Peripheral resources include UART (2 channels), I²C bus interface, 16-bit timer arrays (TAU), watchdog timer, and power-on reset circuitry. The device supports in-circuit debugging via QB-MINI2 and flash programming via PG-FP5, with EEPROM emulation library support for data retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 78K0 8-bit CISC core, 20 MHz max operation - enables deterministic real-time control with ≤ 1 µs instruction cycle at full speed. |
| Memory | 64 KB Flash (programmable in-system), 4 KB RAM - sufficient for medium-complexity firmware with LCD graphics and sensor processing. |
| LCD Support | 128-segment × 4 common drive, static/2–4 COM multiplexing - directly drives alphanumeric or custom segment displays without external driver IC. |
| ADC | 10-bit SAR ADC, 8 input channels, 10 µs conversion time - suitable for precision analog sensing (temperature, voltage, current) in battery-powered instruments. |
| Power Modes | HALT (CPU stop, peripherals active), STOP (all clocks off, RAM retention) - extends battery life in portable devices with intermittent display updates. |
| I/O Pins | 39 CMOS bidirectional I/O with pull-up options - provides flexible peripheral interfacing while minimizing external components for button/keypad inputs. |
| Package | 100-pin LQFP (14 × 14 mm, 0.5 mm pitch) - standard surface-mount footprint compatible with automated PCB assembly and thermal management in compact enclosures. |
Pinout & Package
UPD78F0451GA-HAB-AX is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm lead pitch) with exposed thermal pad. Pin assignments follow Renesas' standardized 78K0/LE3 layout, supporting full I/O, LCD segment/common outputs, analog inputs, and debug interface signals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domains: VDD (2.7–5.5 V) powers digital logic and LCD driver; separate AVDD/AVSS for ADC reference stability. |
| P10–P17, P20–P27, etc. | General-purpose I/O ports | 39 total I/O pins configurable as input/output with selectable pull-up; some support alternate functions (UART, I²C, TAU). |
| COM0–COM7 | LCD common outputs | Drive up to 8 LCD commons in multiplexed mode; enable direct connection to segment electrodes of character or graphic LCDs. |
| SEG0–SEG127 | LCD segment outputs | 128 dedicated segment drivers with programmable bias voltage (VLCD0–VLCD3) for contrast control across temperature ranges. |
| RESET | Active-low reset input | Asynchronous hardware reset; internal POR and LVI ensure reliable initialization across supply ramp-up and brownout conditions. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated LCD controller/driver | Eliminates external LCD driver IC, reduces BOM cost and board area for embedded displays with up to 128 segments. |
| Flash memory with EEPROM emulation | Enables non-volatile parameter storage (calibration data, user settings) using Renesas' TM Emulation Library without external serial EEPROM. |
| Low-power STOP/HALT modes | Reduces current consumption to 0.7 µA (STOP) and 12 µA (HALT), extending battery life in portable medical or metering devices. |
| On-chip 10-bit ADC with internal reference | Provides calibrated analog measurement without external voltage reference, simplifying sensor interface design for temperature or pressure monitoring. |
| RA78K0/CC78K0 toolchain support | Full IDE integration (PM+, ID78K0-QB) and compiler libraries accelerate firmware development and debugging for production-ready code. |
Applications
| Industrial HMI Panels | Portable Test Equipment |
|---|---|
Use Scenario: Standalone panel meters and machine status displays in factory automation cabinets. IC Role / Device Role / Timing Role: Main controller managing sensor data acquisition, real-time display refresh, and keypad input handling. Use Value: Integrated LCD driver eliminates external driver IC; 39 GPIOs support direct connection to buttons, LEDs, and RS-485 transceivers. | Use Scenario: Handheld multimeters and insulation testers requiring battery operation and segmented LCD readouts. IC Role / Device Role / Timing Role: Central MCU executing measurement algorithms, driving LCD segments, and managing auto-ranging logic. Use Value: STOP mode current of 0.7 µA enables multi-year battery life; on-chip ADC with internal reference ensures stable readings across temperature swings. |
| Home Appliance Control | Medical Diagnostic Devices |
Use Scenario: Microwave oven and washing machine control panels with numeric LCD displays and touch-sensitive keys. IC Role / Device Role / Timing Role: System controller coordinating motor timing, safety interlocks, and user interface rendering. Use Value: HALT mode allows rapid wake-up from keypad press; 64 KB Flash accommodates firmware with multiple language UI strings. | Use Scenario: Portable blood glucose monitors and pulse oximeters with alphanumeric LCD and low-power requirements. IC Role / Device Role / Timing Role: Safety-critical controller managing analog sensor signal chain, display output, and USB/UART communication. Use Value: Built-in LVI and POR ensure robust startup under varying battery conditions; EEPROM emulation stores calibration coefficients securely. |
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 | RL78/G13 core, 32 KB Flash, 4 KB RAM, same 100-pin LQFP but different pin mapping and register layout. | Requires firmware porting due to architectural differences; lacks native 128-segment LCD drive (supports only 64 segments). | Select when migrating to Renesas' newer RL78 platform with enhanced low-power features and toolchain continuity. |
| UPD78F0441GA-GAH-AX | Same 78K0/LE3 family, 48 KB Flash, 3 KB RAM, identical pinout and peripheral set except reduced Flash/RAM capacity. | Drop-in replacement for cost-sensitive designs where 48 KB Flash suffices; no hardware changes required. | Choose for legacy-compatible upgrades where existing PCB layout and firmware can be reused with minor memory optimization. |
Compared with UPD78F0451GA-HAB-AX, R5F100PLGSP offers lower active power but requires redesign for LCD segment count and software migration, while UPD78F0441GA-GAH-AX provides true hardware compatibility at reduced memory capacity-making it ideal for incremental BOM cost reduction without layout change.
Availability
UPD78F0451GA-HAB-AX is available at Aetrix Electronics and suitable for industrial HMIs, portable test equipment, home appliance control, and medical diagnostic devices requiring stable component supply and long-term manufacturability.
Supply support for UPD78F0451GA-HAB-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 consumer markets.
The 78K0/Lx3 product line delivers cost-optimized 8-bit MCUs with integrated peripherals-including LCD controllers-for resource-constrained embedded systems requiring high reliability and long product lifecycles.
FAQ
What is the maximum operating frequency of the UPD78F0451GA-HAB-AX?
The UPD78F0451GA-HAB-AX operates at a maximum CPU clock frequency of 20 MHz using the main system oscillator. This corresponds to a 1 µs instruction cycle time for most instructions, enabling responsive real-time control in applications such as industrial HMIs and portable instrumentation where deterministic timing is critical. The device also supports sub-clock operation (32.768 kHz) for RTC functions independent of main clock state.
Does the UPD78F0451GA-HAB-AX support in-circuit debugging?
Yes, the UPD78F0451GA-HAB-AX supports full in-circuit debugging via the on-chip debug interface compatible with Renesas' QB-MINI2 emulator. This enables real-time variable monitoring, breakpoint insertion, and step-by-step execution without requiring external debug headers or special bootloaders. The UPD78F0451GA-HAB-AX retains debug functionality even when operating in HALT mode, allowing low-power system validation during development.
How many LCD segments can the UPD78F0451GA-HAB-AX drive?
The UPD78F0451GA-HAB-AX supports up to 128 LCD segments in combination with up to 8 commons (COM0–COM7), enabling static or 2–4 multiplexed drive configurations. This capability allows direct connection to alphanumeric or custom-segment LCD modules without external driver ICs. Segment outputs (SEG0–SEG127) are individually controllable through dedicated SFRs, and bias voltage (VLCD) is programmable to maintain consistent contrast across operating temperature ranges.
What development tools are officially supported for the UPD78F0451GA-HAB-AX?
Renesas officially supports the RA78K0 assembler (Ver. 4.01), CC78K0 C compiler (Ver. 4.00), PM+ IDE (Ver. 6.30), and ID78K0-QB debugger for the UPD78F0451GA-HAB-AX. Hardware tools include QB-78K0LX3 emulator and PG-FP5 flash programmer. These tools provide full compile-debug-program workflows, EEPROM emulation library integration, and flash security configuration - all validated specifically for the UPD78F0451GA-HAB-AX and its 78K0/LE3 family context.
Is the UPD78F0451GA-HAB-AX qualified for automotive applications?
No, the UPD78F0451GA-HAB-AX is classified as a "Standard" quality grade device per Renesas documentation, intended for applications including industrial equipment, office electronics, and consumer appliances-not automotive or safety-critical systems. It does not meet AEC-Q100 requirements, lacks automotive-grade temperature range certification (−40°C to +125°C), and has no specified qualification for vibration, ESD, or EMC performance under automotive test standards. For automotive use, Renesas recommends RL78/F1x or RH850 families instead of the UPD78F0451GA-HAB-AX.
UPD78F0451GA-HAB-AX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-TQFP
- Series:
- 78K0/Lx3
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- 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:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 768 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
UPD78F0451GA-HAB-AX FAQ
1.How can I place an order for UPD78F0451GA-HAB-AX through Aetrix?
Please submit a Request for Quotation (RFQ) for UPD78F0451GA-HAB-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 UPD78F0451GA-HAB-AX reliable?
The price and inventory of UPD78F0451GA-HAB-AX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPD78F0451GA-HAB-AX is usually 5 days.
3.What payment methods are accepted for UPD78F0451GA-HAB-AX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPD78F0451GA-HAB-AX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPD78F0451GA-HAB-AX?
UPD78F0451GA-HAB-AX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPD78F0451GA-HAB-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 UPD78F0451GA-HAB-AX?
For technical support, including UPD78F0451GA-HAB-AX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPD78F0451GA-HAB-AX requirements.
6.How does Aetrix verify that UPD78F0451GA-HAB-AX is sourced from the original manufacturer or authorized distributors?
All UPD78F0451GA-HAB-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 UPD78F0451GA-HAB-AX meets industry standards.
7.What is the process for return or replacement of UPD78F0451GA-HAB-AX?
All UPD78F0451GA-HAB-AX units undergo pre-shipment inspection (PSI). If there is an issue with UPD78F0451GA-HAB-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 UPD78F0451GA-HAB-AX part is unused and in its original packaging.
Return procedure for UPD78F0451GA-HAB-AX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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