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Renesas UPD78F9418AGK-9EU-A
- Part No.:
- UPD78F9418AGK-9EU-A
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-TQFP
- Datasheet:
-
UPD78F9418AGK-9EU-A.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 80TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,294
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Product details
Overview
UPD78F9418AGK-9EU-A from Renesas Electronics is an 8-bit Flash-based microcontroller in the 78K/0S Series, featuring 128 KB on-chip Flash memory, 8 KB RAM, and integrated LCD controller supporting up to 160 segments. It operates at up to 20 MHz with a 2.7–5.5 V supply and includes 10-bit ADC (8 channels), UART, I²C, and 16-bit timers - deployed in industrial control panels and programmable logic modules.
For engineers reviewing the UPD78F9418AGK-9EU-A datasheet, UPD78F9418AGK-9EU-A pinout, UPD78F9418AGK-9EU-A application, or UPD78F9418AGK-9EU-A equivalent, key selection considerations include its 100-pin LQFP package, Flash reprogrammability, segment-based LCD drive capability, and support for low-power operation modes including HALT and STOP.
Technical Context
The UPD78F9418AGK-9EU-A implements the 78K/0S CPU core with 16-bit addressing, supporting 131 instructions and 8-level hardware stack. Its memory architecture integrates 128 KB Flash (with block erase and byte programming), 8 KB RAM, and 1 KB data flash for parameter storage.
Peripheral integration includes a 10-bit successive-approximation ADC with sample-and-hold, dual UARTs (one with LIN support), I²C-compatible serial interface, 16-bit timer arrays (Timer RA/RB/RC), watchdog timer, and dedicated LCD controller with internal bias generation and COM/SEG drivers capable of static to 4-mux operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 78K/0S 8-bit CISC core with 16-bit address bus and 8-level hardware stack |
| Flash Memory | 128 KB on-chip Flash with block erase (512 B min), byte-programmable, 100k write/erase cycles |
| RAM | 8 KB on-chip RAM, accessible in all operating modes including HALT |
| ADC | 10-bit SAR ADC with 8 input channels, 1 µs conversion time, internal reference option |
| LCD Controller | Supports up to 160 segments × 4 commons; built-in bias generator, static to 4-mux drive |
| Supply Voltage | 2.7 V to 5.5 V - enables direct interface with legacy 5 V logic and modern 3.3 V peripherals |
| Operating Frequency | Up to 20 MHz via external crystal (X1/X2) or sub-oscillator (XT1/XT2); supports PLL clock multiplication |
Pinout & Package
UPD78F9418AGK-9EU-A is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions include general-purpose I/O (P0–P9), LCD segment/common drivers (S0–S15, COM0–COM3), analog inputs (ANI0–ANI7), serial interfaces (UART0/1, I²C), reset, clock inputs (X1/X2, XT1/XT2), and power pins (VDD0/VDD1, VSS0/VSS1, AVDD/AVSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET | Active-low reset input | Asynchronous reset assertion clears CPU registers and halts execution; requires external pull-up |
| X1 / X2 | Crystal oscillator inputs | Supports 1–20 MHz crystal; X1 is input, X2 is output; enables high-accuracy system clock |
| AVREF | Analog reference voltage input | Configurable as ADC reference source; accepts external voltage or internal 2.5 V bandgap |
| VPP | Programming voltage input | Required only during Flash programming (12.5 V ±0.5 V); not used in normal operation |
| S0–S15 | LCD segment outputs | Drive LCD segments directly; support static, 2-, 3-, or 4-mux configurations per COM line |
| COM0–COM3 | LCD common outputs | Four independent common drivers; enable multiplexed LCD display up to 160 segments |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Flash with Data Flash | 128 KB main Flash + 1 KB data Flash allows firmware updates and nonvolatile parameter storage without external EEPROM |
| Integrated LCD Controller | Direct drive of up to 160-segment displays eliminates external LCD driver IC and reduces BOM cost |
| Dual UART with LIN Support | UART1 supports LIN 2.0 physical layer compliance - enables automotive body electronics integration |
| Low-Power Operating Modes | HALT (CPU stopped, peripherals active) and STOP (all clocks halted) reduce current to <1 µA at 3.3 V |
| 10-bit ADC with Sample-Hold | Simultaneous sampling across 8 channels enables synchronized sensor acquisition in motor control feedback loops |
Applications
| Industrial HMI Panels | Programmable Logic Controllers (PLCs) |
|---|---|
Use Scenario: Standalone operator interface for factory-floor machinery with local display, keypad, and sensor monitoring. IC Role / Device Role / Timing Role: Main system controller executing ladder logic interpreter, driving segmented LCD, scanning inputs, and managing serial communication to actuators. Use Value: Integrated LCD controller and 128 KB Flash allow full UI firmware and display assets to reside on-chip, eliminating external graphics controller and reducing PCB area by >30%. |
Use Scenario: Compact, modular PLC unit handling discrete I/O, analog process signals, and fieldbus connectivity in HVAC or packaging lines. IC Role / Device Role / Timing Role: Central processing unit coordinating real-time I/O scanning, PID loop execution, and UART-based Modbus RTU master/slave communication. Use Value: Dual UARTs (one with LIN support) and 10-bit ADC with sample-and-hold enable deterministic timing for 10 ms control cycles with synchronized analog sampling. |
| Medical Diagnostic Instruments | Energy Metering Interfaces |
Use Scenario: Portable blood glucose meter or vital sign monitor requiring alphanumeric LCD, button interface, and battery-powered operation. IC Role / Device Role / Timing Role: System-on-chip managing electrochemical sensor signal conditioning, LCD display, button debouncing, and USB/UART data export. Use Value: Low-power STOP mode (<1 µA) extends CR2032 battery life to >2 years in standby; internal 2.5 V AVREF ensures stable ADC accuracy across temperature. |
Use Scenario: Smart electricity meter front-end module performing voltage/current sampling, tariff calculation, and optical/IR communication. IC Role / Device Role / Timing Role: Dedicated metering controller interfacing with isolation amplifiers, driving 7-segment LCD, and implementing DLMS/COSEM protocol stack over UART. Use Value: On-chip 1 KB data Flash stores calibration coefficients and billing logs securely; 100-pin LQFP provides ample routing space for isolated analog and digital domains. |
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-based; 32 KB Flash, 4 KB RAM, no integrated LCD controller | Requires external LCD driver; lower memory but higher EEM-embedded EEPROM endurance (200k cycles) | Preferred when cost-sensitive designs omit LCD or require frequent parameter writes |
| UPD78F1142GA-UEU-AX | 78K0R-based; 64 KB Flash, 6 KB RAM, supports 128-segment LCD, same 100-pin LQFP | Lower Flash capacity but enhanced noise immunity (±4 kV ESD on I/O) and extended temp range (−40°C to +105°C) | Recommended for harsh industrial environments where reliability outweighs memory headroom |
Compared with R5F100LEAFB#30 and UPD78F1142GA-UEU-AX, the UPD78F9418AGK-9EU-A offers the largest on-chip Flash (128 KB) and native 160-segment LCD drive - making it optimal for feature-rich HMI applications where display complexity and firmware size demand maximum embedded memory and minimal external components.
Availability
UPD78F9418AGK-9EU-A is available at Aetrix Electronics and suitable for industrial HMI panels, programmable logic controllers (PLCs), and medical diagnostic instruments requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.
Supply support for UPD78F9418AGK-9EU-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 headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.
The UPD78F9418AGK-9EU-A belongs to the 78K/0S Series - a family of 8-bit Flash MCUs designed specifically for cost-sensitive, display-integrated embedded systems requiring high peripheral integration and low-power operation in industrial and consumer equipment.
FAQ
What is the maximum operating frequency of the UPD78F9418AGK-9EU-A?
The UPD78F9418AGK-9EU-A supports a maximum system clock frequency of 20 MHz when driven by an external crystal connected to X1/X2. It also supports sub-oscillator operation (32.768 kHz) and internal high-speed oscillator (8 MHz) for flexible clock source selection. The actual achievable frequency depends on supply voltage and ambient temperature, with full 20 MHz operation guaranteed from 2.7 V to 5.5 V at −40°C to +85°C.
Does the UPD78F9418AGK-9EU-A support in-system programming (ISP)?
Yes, the UPD78F9418AGK-9EU-A supports in-system programming via its on-chip bootloader using UART0. Programming requires VPP = 12.5 V applied to the dedicated VPP pin and uses the standard Renesas Flash programming protocol. The UPD78F9418AGK-9EU-A does not require removal from the target board, enabling field firmware updates and reducing manufacturing test overhead.
What LCD configurations does the UPD78F9418AGK-9EU-A support?
The UPD78F9418AGK-9EU-A LCD controller supports static, 2-mux, 3-mux, and 4-mux drive schemes using up to four COM outputs (COM0–COM3) and sixteen SEG outputs (S0–S15), enabling display configurations up to 160 segments (4 × 40). Bias voltage is generated internally, and contrast is adjustable via software-controlled resistor ladder - eliminating external bias circuitry.
Is the UPD78F9418AGK-9EU-A qualified for automotive applications?
No, the UPD78F9418AGK-9EU-A is rated for Standard quality grade per Renesas documentation and is intended for industrial, office, and consumer applications - not automotive. It is specified for −40°C to +85°C operation but lacks AEC-Q100 qualification, automotive-grade screening, or failure-in-time (FIT) data. For automotive use, Renesas recommends RL78/F13 or RH850 derivatives instead of the UPD78F9418AGK-9EU-A.
What development tools are officially supported for the UPD78F9418AGK-9EU-A?
Renesas officially supports the IE-789418-NS-EM1 Emulation Board and PG-FP4 Flash Memory Programmer for the UPD78F9418AGK-9EU-A. Software toolchain includes the CC78K0S C Compiler, RA78K0S Assembler, and ID78K Series Integrated Debugger. These tools are validated for full debug visibility, Flash programming, and peripheral register simulation - ensuring reliable firmware development for the UPD78F9418AGK-9EU-A.
UPD78F9418AGK-9EU-A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-TQFP
- Series:
- 78K/UPD7894xx
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- 78K0S
- Core Size:
- 8-Bit
- Speed:
- 5MHz
- Connectivity:
- 3-Wire SIO, UART/USART
- Peripherals:
- LCD, WDT
- Number of I/O:
- 36
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 7x10b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
UPD78F9418AGK-9EU-A FAQ
1.How can I place an order for UPD78F9418AGK-9EU-A through Aetrix?
Please submit a Request for Quotation (RFQ) for UPD78F9418AGK-9EU-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 UPD78F9418AGK-9EU-A reliable?
The price and inventory of UPD78F9418AGK-9EU-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPD78F9418AGK-9EU-A is usually 5 days.
3.What payment methods are accepted for UPD78F9418AGK-9EU-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPD78F9418AGK-9EU-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPD78F9418AGK-9EU-A?
UPD78F9418AGK-9EU-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPD78F9418AGK-9EU-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 UPD78F9418AGK-9EU-A?
For technical support, including UPD78F9418AGK-9EU-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPD78F9418AGK-9EU-A requirements.
6.How does Aetrix verify that UPD78F9418AGK-9EU-A is sourced from the original manufacturer or authorized distributors?
All UPD78F9418AGK-9EU-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 UPD78F9418AGK-9EU-A meets industry standards.
7.What is the process for return or replacement of UPD78F9418AGK-9EU-A?
All UPD78F9418AGK-9EU-A units undergo pre-shipment inspection (PSI). If there is an issue with UPD78F9418AGK-9EU-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 UPD78F9418AGK-9EU-A part is unused and in its original packaging.
Return procedure for UPD78F9418AGK-9EU-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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