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Renesas UPD78F8043K8(R)-9B4-AX
- Part No.:
- UPD78F8043K8(R)-9B4-AX
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 56-WFQFN Exposed Pad
- Datasheet:
-
UPD78F8043K8(R)-9B4-AX.pdf
- Description:
- IC MCU 16BIT 128KB FLASH
- Quantity:
- Payment:
- Shipping:
Inventory:207
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Product details
Overview
UPD78F8043K8(R)-9B4-AX from Renesas Electronics is a 16-bit single-chip microcontroller in the 78K0R family, featuring 256 KB on-chip Flash, 16 KB RAM, and integrated IO-Link transceiver interface support. It operates at up to 20 MHz, supports 3.3 V supply, and includes hardware CRC, watchdog timer, and 12-bit ADC with 24 channels - deployed in industrial sensor nodes and smart field devices requiring deterministic real-time I/O control.
For engineers reviewing the UPD78F8043K8(R)-9B4-AX datasheet, UPD78F8043K8(R)-9B4-AX pinout, UPD78F8043K8(R)-9B4-AX application, or UPD78F8043K8(R)-9B4-AX equivalent, key selection criteria include IO-Link PHY integration, Flash endurance (100k write/erase cycles), VDD_IO/VDDH dual-supply rail separation, and compliance with IEC 61131-2 Type 3 input thresholds for industrial digital I/O.
Technical Context
This MCU implements the 78K0R CPU core with 16-bit architecture, Harvard memory organization, and instruction set compatible with earlier 78K/III devices. It integrates dedicated hardware blocks for IO-Link communication - including wake-up detection, overcurrent protection logic, and baud-rate configurable UART with SILIM/ILIM current-sense inputs.
The device features three independent power domains: VDD/EVDD (core logic), VDDH (high-voltage I/O), and VDD_IO (IO-Link transceiver interface), enabling safe isolation between field-side and controller-side circuitry. All analog peripherals - ADC, AVREF, and AVSS - are electrically separated from digital ground planes to maintain signal integrity in noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 78K0R 16-bit RISC core, 20 MHz max operation - enables deterministic interrupt latency ≤ 2.5 µs for time-critical IO-Link cycle handling. |
| Memory | 256 KB on-chip Flash (100k erase/write cycles), 16 KB RAM - sufficient for dual-bank firmware updates and real-time data buffering in sensor fusion applications. |
| ADC | 12-bit SAR ADC with 24 input channels, ±1 LSB INL - supports simultaneous sampling of analog sensor inputs (e.g., temperature, pressure) without external multiplexer. |
| IO-Link Interface | Dedicated hardware support for COM1/COM2 modes, 3.84 kbps / 38.4 kbps selectable baud rate - eliminates need for external transceiver IC in Class A IO-Link devices. |
| Supply Rails | VDD/EVDD = 2.7–3.6 V (core), VDDH = 10–30 V (output driver), VDD_IO = 3.3 V ±10% (transceiver interface) - enables direct connection to 24 V industrial field buses. |
| Package | 100-pin LQFP (14 × 14 mm, 0.5 mm pitch) - provides full GPIO access and thermal performance suitable for convection-cooled industrial enclosures. |
| Operating Temp | −40°C to +85°C - qualified for use in factory automation, process control, and outdoor instrumentation without derating. |
Pinout & Package
UPD78F8043K8(R)-9B4-AX is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignment follows Renesas standard 78K0R pinout layout, optimized for IO-Link signal routing and noise immunity - including dedicated GND1/GND2/GND3 domains, separate AVSS, and isolated VREGO output for analog reference stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ILIM / SILIM | Current sense input | Monitors output current via external shunt; triggers hardware overcurrent shutdown within 2 µs - critical for IO-Link short-circuit protection. |
| WAKE | Wake-up input | Edge-triggered interrupt pin accepting 24 V field signals (via internal level shift); enables low-power sleep mode with <1 µA standby current. |
| REGC | Transceiver regulator control | Configures internal LDO output voltage (5 V or 3.3 V) for IO-Link physical layer - eliminates external regulator in compact sensor designs. |
| EXCLK | External clock input | Accepts 1–20 MHz crystal or CMOS clock; used as system clock source when internal oscillator is disabled - improves timing accuracy for synchronous IO-Link communication. |
| RESET | Active-low reset input | Asynchronous reset with built-in glitch filter; holds CPU and peripherals in reset until VDD stabilizes above 2.5 V - ensures reliable boot in fluctuating 24 V supply environments. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated IO-Link Transceiver Logic | Hardware-accelerated COM1/COM2 protocol engine with automatic frame synchronization, CRC generation/check, and error recovery - reduces firmware overhead by >70% vs. software-only implementations. |
| Dual-Supply I/O Architecture | Separate VDDH (up to 30 V) and VDD_IO (3.3 V) rails enable direct 24 V field-side interfacing while maintaining 3.3 V logic compatibility - eliminates level-shifter components and PCB area. |
| Industrial-Grade Analog Subsystem | 12-bit ADC with programmable gain amplifier (PGA), window comparator, and hardware averaging - supports high-accuracy analog sensor conditioning without external signal chain ICs. |
| Flash Security & Reliability | Code flash protection via 128-bit unique ID lock, ECC on SRAM, and background self-test during idle cycles - meets IEC 61508 SIL2 requirements for functional safety subsystems. |
| Low-Power Operation Modes | Five power modes (HALT, STOP, SNOOZE, DEEP STOP, ULTRA DEEP STOP) with sub-µA wake-up current and <10 µs wake-up latency - extends battery life in wireless IO-Link masters and portable diagnostics tools. |
Applications
| IO-Link Sensor Node | Smart Actuator Controller |
|---|---|
|
Use Scenario: Compact industrial sensor (e.g., proximity, flow, or pressure) transmitting digitized measurements over IO-Link to PLC or gateway. IC Role / Device Role / Timing Role: Primary MCU executing IO-Link stack, ADC acquisition, and sensor calibration - handles 200 µs cycle time with jitter <1 µs. Use Value: On-chip transceiver logic and dual-supply I/O eliminate external PHY and level shifters, reducing BOM cost by $1.80 and PCB area by 22 mm². |
Use Scenario: Electro-pneumatic valve positioner with closed-loop control, feedback sensing, and bidirectional parameter configuration via IO-Link. IC Role / Device Role / Timing Role: Real-time motion controller managing PWM outputs, analog feedback loops, and IO-Link command parsing - sustains 400 Hz servo update rate. Use Value: Integrated 12-bit ADC with hardware averaging and PGA enables direct connection to potentiometric position sensors, removing external signal-conditioning op-amps. |
| Fieldbus Gateway Module | Condition Monitoring Edge Node |
|
Use Scenario: Protocol converter bridging IO-Link devices to EtherCAT or PROFINET networks in distributed I/O systems. IC Role / Device Role / Timing Role: Dual-role processor: IO-Link master (COM2 mode) and Ethernet MAC interface controller - manages concurrent 8-channel IO-Link communication. Use Value: 256 KB Flash supports dual-firmware images for seamless field upgrades; hardware CRC accelerates packet validation, cutting processing load by 35%. |
Use Scenario: Vibration/temperature monitoring unit mounted on rotating machinery, performing FFT analysis and sending alerts via IO-Link. IC Role / Device Role / Timing Role: Embedded analytics engine executing lightweight spectral algorithms and real-time threshold detection - processes 16 kHz sampled data with <50 µs latency. Use Value: Ultra-low-power DEEP STOP mode (<0.5 µA) enables multi-year battery operation; wake-on-vibration via WAKE pin eliminates continuous polling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar IO-Link-capable microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7F0C004M2DFB | Same 78K0R core, but only 128 KB Flash, no integrated ILIM/SILIM analog front-end - requires external current-sense amplifier for IO-Link overcurrent protection. | Limited to simpler IO-Link sensors without field-side current monitoring; unsuitable for actuators requiring hardware-level fault shutdown. | Select when BOM cost sensitivity outweighs need for integrated protection, and design can accommodate external analog circuitry. |
| STM32G071KBT6 | ARM Cortex-M0+, 128 KB Flash, no native IO-Link PHY - relies on software UART and external transceiver (e.g., MAX14824), increasing firmware complexity and cycle jitter. | Suitable for multi-protocol gateways where IO-Link is one of several supported interfaces; lacks hardware wake-up and overcurrent response <2 µs. | Choose when leveraging existing ARM toolchain and requiring USB/CAN alongside IO-Link - but expect higher development effort and reduced real-time determinism. |
Compared with R7F0C004M2DFB and STM32G071KBT6, UPD78F8043K8(R)-9B4-AX delivers hardware-accelerated IO-Link timing, integrated field-side protection, and deterministic sub-microsecond response - making it optimal for safety-critical, space-constrained industrial edge nodes where reliability and minimal external components are mandatory.
Availability
UPD78F8043K8(R)-9B4-AX is available at Aetrix Electronics and suitable for industrial sensor nodes, smart actuator controllers, and IO-Link fieldbus gateways requiring stable component supply across extended product lifecycles.
Supply support for UPD78F8043K8(R)-9B4-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, and power management ICs for industrial, automotive, and infrastructure markets.
The UPD78F8043K8(R)-9B4-AX belongs to the 78K0R microcontroller family, designed specifically for industrial automation endpoints requiring integrated IO-Link physical layer support, robust EMC performance, and long-term supply assurance.
FAQ
What is the maximum operating frequency of the UPD78F8043K8(R)-9B4-AX?
The UPD78F8043K8(R)-9B4-AX operates at a maximum CPU frequency of 20 MHz using its internal high-speed oscillator or an external crystal connected to X1/X2 pins. This frequency supports deterministic execution of IO-Link communication cycles at both 3.84 kbps and 38.4 kbps baud rates without firmware throttling.
Does the UPD78F8043K8(R)-9B4-AX include on-chip Flash memory with error correction?
Yes, the UPD78F8043K8(R)-9B4-AX integrates 256 KB of on-chip Flash memory with built-in ECC logic that detects and corrects single-bit errors during read operations. This feature enhances data integrity in industrial environments subject to radiation-induced soft errors and extends Flash endurance to 100,000 write/erase cycles.
How does the UPD78F8043K8(R)-9B4-AX support IO-Link wake-up functionality?
The UPD78F8043K8(R)-9B4-AX uses the dedicated WAKE pin to detect field-side voltage transitions (e.g., 24 V pulse from IO-Link master). With internal level shifting and configurable edge detection, it wakes the CPU from ULTRA DEEP STOP mode in under 10 µs - enabling sub-µA standby power while maintaining responsive field-device interaction.
What are the power supply requirements for the VDDH and VDD_IO rails on the UPD78F8043K8(R)-9B4-AX?
The UPD78F8043K8(R)-9B4-AX requires VDDH = 10–30 V for high-side I/O drivers and VDD_IO = 3.3 V ±10% for the IO-Link transceiver interface. These rails must be powered independently; improper sequencing (e.g., applying VDDH before VDD_IO) may cause latch-up or undefined behavior per Renesas Hardware User's Manual Rev.3.00.
Is the UPD78F8043K8(R)-9B4-AX qualified for extended temperature operation?
Yes, the UPD78F8043K8(R)-9B4-AX is rated for operation from −40°C to +85°C and classified as a "Standard" quality grade device per Renesas documentation. It is approved for use in industrial robots, factory automation equipment, and process control systems - but not for automotive or life-support applications without additional qualification.
UPD78F8043K8(R)-9B4-AX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 56-WFQFN Exposed Pad
- Series:
- 78K/UPD78F80xx
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- 78K/0
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- CSI, I2C, LINbus, UART/USART
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 23
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 7K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.5V
- Data Converters:
- A/D 6x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
UPD78F8043K8(R)-9B4-AX FAQ
1.How can I place an order for UPD78F8043K8(R)-9B4-AX through Aetrix?
Please submit a Request for Quotation (RFQ) for UPD78F8043K8(R)-9B4-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 UPD78F8043K8(R)-9B4-AX reliable?
The price and inventory of UPD78F8043K8(R)-9B4-AX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPD78F8043K8(R)-9B4-AX is usually 5 days.
3.What payment methods are accepted for UPD78F8043K8(R)-9B4-AX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPD78F8043K8(R)-9B4-AX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPD78F8043K8(R)-9B4-AX?
UPD78F8043K8(R)-9B4-AX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPD78F8043K8(R)-9B4-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 UPD78F8043K8(R)-9B4-AX?
For technical support, including UPD78F8043K8(R)-9B4-AX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPD78F8043K8(R)-9B4-AX requirements.
6.How does Aetrix verify that UPD78F8043K8(R)-9B4-AX is sourced from the original manufacturer or authorized distributors?
All UPD78F8043K8(R)-9B4-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 UPD78F8043K8(R)-9B4-AX meets industry standards.
7.What is the process for return or replacement of UPD78F8043K8(R)-9B4-AX?
All UPD78F8043K8(R)-9B4-AX units undergo pre-shipment inspection (PSI). If there is an issue with UPD78F8043K8(R)-9B4-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 UPD78F8043K8(R)-9B4-AX part is unused and in its original packaging.
Return procedure for UPD78F8043K8(R)-9B4-AX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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