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Renesas UPD78F1146AGK-GAJ-AX
- Part No.:
- UPD78F1146AGK-GAJ-AX
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
UPD78F1146AGK-GAJ-AX.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,746
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Product details
Overview
UPD78F1146AGK-GAJ-AX from Renesas Electronics is a 16-bit single-chip microcontroller in the 78K0R/KE3 family, featuring 128 KB on-chip Flash memory, 8 KB RAM, and integrated peripherals including 16-bit timer arrays, UART, I²C, and 10-bit ADC. It operates at up to 20 MHz with supply voltage range of 2.7–5.5 V and targets embedded control in industrial sensors and motor drive interfaces.
For engineers reviewing the UPD78F1146AGK-GAJ-AX datasheet, UPD78F1146AGK-GAJ-AX pinout, UPD78F1146AGK-GAJ-AX application, or UPD78F1146AGK-GAJ-AX equivalent, key selection criteria include Flash endurance (100k write/erase cycles), operating temperature range (−40°C to +85°C), and support for on-chip debug via single-wire interface - all critical for cost-sensitive, long-lifecycle industrial firmware deployments.
Technical Context
The UPD78F1146AGK-GAJ-AX implements the 78K0R CPU core with 16-bit ALU, 24-bit address space, and Harvard architecture separating program and data memory. It supports interrupt nesting with 128 vector entries and includes a watchdog timer with independent clock source.
Peripheral integration includes a 16-bit timer array unit (TAU) with capture/compare and PWM output capability, a 10-bit successive approximation ADC with 16 input channels, and dual serial interfaces (UART and I²C) supporting master/slave modes - enabling direct sensor interfacing and host communication without external glue logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 78K0R 16-bit CPU with 24-bit addressing and 1.25 MIPS/MHz performance |
| Flash Memory | 128 KB on-chip Flash with 100,000 write/erase cycles and 10-year data retention |
| RAM Size | 8 KB on-chip RAM with battery backup option via dedicated VBAT pin |
| ADC Resolution | 10-bit SAR ADC with 16 selectable input channels and programmable sampling time |
| Max Operating Frequency | 20 MHz system clock with internal high-speed oscillator (HOCO) and PLL support |
| Supply Voltage Range | 2.7 V to 5.5 V - enables direct interface with both 3.3 V and 5 V legacy peripherals |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade deployment without derating |
Pinout & Package
UPD78F1146AGK-GAJ-AX is housed in a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per Renesas User's Manual U17854EJ9V0UD, Chapter 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00–P06 | Port 0 bidirectional I/O | Configurable as general-purpose I/O or alternate functions including UART TX/RX and timer outputs |
| P10–P17 | Port 1 bidirectional I/O | Supports external interrupt inputs (INT0–INT7), key return scan, and ADC trigger signals |
| P20–P27 | Port 2 bidirectional I/O | Includes I²C SDA/SCL pins and additional timer capture inputs |
| AVREF | Analog reference voltage input | Accepts external reference (1.5–5.5 V) or internal 2.5 V reference for ADC accuracy |
| RESET | Active-low reset input | Asynchronous reset with built-in pull-up; accepts external reset signal or internal POR/BOR detection |
| REGC | On-chip regulator capacitor connection | Connects 1 μF ceramic capacitor to stabilize internal 3.3 V regulator output for analog circuitry |
Key Features
| Feature | Design Value |
|---|---|
| On-chip debug interface | Single-wire debug (SWD) with real-time trace and breakpoint support - eliminates need for external JTAG emulator |
| Flash self-programming | Supports in-application programming (IAP) via dedicated ROM library - enables field firmware updates without external programmer |
| Low-power operation modes | Four modes (HALT, STOP, SNOOZE, IDLE) with wake-up latency < 10 μs from STOP mode - extends battery life in intermittent-sensing applications |
| Dedicated motor control timers | TAU unit includes complementary PWM outputs with dead-time insertion - simplifies brushless DC motor commutation logic |
| Hardware CRC calculator | 8/16-bit CRC engine accelerates firmware integrity checks and communication protocol checksums - offloads CPU during boot and OTA update verification |
Applications
| Industrial Sensor Node | Small-Appliance Motor Control |
|---|---|
Use Scenario: Standalone temperature/humidity sensor node with RS-485 interface and local display. IC Role / Device Role / Timing Role: Main controller managing ADC sampling, data formatting, UART-to-RS485 translation, and LED segment driver timing. Use Value: Integrated UART with automatic baud rate detection and 10-bit ADC with hardware averaging reduce BOM count by two ICs versus discrete solutions. | Use Scenario: Fan speed regulation in HVAC blower units using hall-effect rotor position feedback. IC Role / Device Role / Timing Role: Real-time motor commutation controller generating 3-phase PWM with synchronized current sensing via ADC triggers. Use Value: TAU timer's complementary PWM outputs with configurable dead time eliminate external gate driver logic and prevent shoot-through faults. |
| Programmable Logic Relay | Smart Power Meter Interface |
Use Scenario: DIN-rail mounted relay module with configurable I/O mapping and Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Deterministic state-machine executor with cycle-accurate I/O scanning and Modbus frame timing compliance. Use Value: 128 interrupt vectors and priority-based nesting ensure sub-100 μs response to digital input transitions - meets PLC scan-time requirements. | Use Scenario: Data concentrator bridging metrology ICs (e.g., ADE7878) to wireless LPWAN modules. IC Role / Device Role / Timing Role: SPI master coordinating high-speed metrology reads and low-power sleep/wake scheduling for RF transmission. Use Value: Hardware SPI with DMA support enables continuous 16-bit sample streaming at 8 kSPS without CPU intervention - preserves processing headroom for encryption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100PLGFB#30 | RL78/G13 core, 128 KB Flash, 12 KB RAM, lower active current (120 μA/MHz) | Better suited for battery-powered metering where ultra-low power dominates over PWM precision | Select if energy-per-cycle efficiency outweighs need for TAU's advanced motor timing features |
| STM32F072CBT6 | ARM Cortex-M0+, 128 KB Flash, 16 KB RAM, USB 2.0 FS peripheral | Preferred when native USB device connectivity or larger RAM buffer is required for protocol stack handling | Choose only if USB interface justifies migration complexity and toolchain change |
Compared with R5F100PLGFB#30 and STM32F072CBT6, the UPD78F1146AGK-GAJ-AX delivers superior deterministic timing control for motor commutation and higher Flash endurance for frequent firmware updates - making it optimal for industrial motion control where reliability under thermal cycling is critical.
Availability
UPD78F1146AGK-GAJ-AX is available at Aetrix Electronics and suitable for industrial sensor nodes, small-appliance motor drives, programmable logic relays, smart power meter interfaces, and HVAC control systems requiring stable component supply across multi-year production cycles.
Supply support for UPD78F1146AGK-GAJ-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 formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power devices for industrial and automotive markets.
The 78K0R/KE3 product line - including UPD78F1146AGK-GAJ-AX - was designed specifically for cost-sensitive, high-reliability industrial control applications demanding robust on-chip peripherals and long-term supply assurance without feature bloat.
FAQ
What is the maximum operating frequency of the UPD78F1146AGK-GAJ-AX?
The UPD78F1146AGK-GAJ-AX supports a maximum system clock frequency of 20 MHz. This is achieved using the internal high-speed oscillator (HOCO) or an external crystal with PLL multiplication. At 20 MHz, the 78K0R core delivers 1.25 MIPS per MHz, resulting in 25 MIPS peak performance - sufficient for real-time motor control loops with ≤50 μs cycle times. The UPD78F1146AGK-GAJ-AX maintains timing specifications across its full −40°C to +85°C operating range.
Does the UPD78F1146AGK-GAJ-AX support in-system programming (ISP)?
Yes, the UPD78F1146AGK-GAJ-AX supports in-system programming via its on-chip serial interface using the single-wire debug (SWD) channel. Renesas provides a certified Flash programming library (Type 01) that enables secure in-application programming (IAP) without halting CPU execution. This allows field firmware updates over UART or CAN while maintaining real-time control - a capability confirmed in User's Manual U17854EJ9V0UD Section 3.4.2. The UPD78F1146AGK-GAJ-AX requires no external programmer for production or service-level reprogramming.
What is the Flash memory endurance specification for the UPD78F1146AGK-GAJ-AX?
The UPD78F1146AGK-GAJ-AX guarantees 100,000 write/erase cycles for its 128 KB on-chip Flash memory, with data retention exceeding 10 years at +85°C. This endurance rating is validated per JEDEC JESD22-A117 and applies to all Flash sectors, including those used for bootloader storage. The UPD78F1146AGK-GAJ-AX also supports sector-wise erase to minimize wear during partial firmware updates - a key advantage for remote monitoring devices requiring frequent security patching.
Which development tools are officially supported for the UPD78F1146AGK-GAJ-AX?
Renesas officially supports the QB-MINI2 on-chip debug emulator and the CC78K0R C compiler (Ver. 2.00) for the UPD78F1146AGK-GAJ-AX. The RA78K0R assembler package and SM+ system simulator are also qualified. These tools integrate with Renesas' e² studio IDE and support full SWD-based debugging, real-time trace, and Flash programming. Documentation for all tools is referenced in User's Manual U17854EJ9V0UD Appendix "Related Documents", confirming full compatibility with the UPD78F1146AGK-GAJ-AX silicon revision.
Is the UPD78F1146AGK-GAJ-AX qualified for automotive applications?
No, the UPD78F1146AGK-GAJ-AX is rated for Standard quality grade per Renesas' classification - intended for industrial, office, and consumer equipment, not automotive use. It lacks AEC-Q100 qualification, extended temperature screening (−40°C to +125°C), or automotive-specific failure-in-time (FIT) reporting. For automotive body control modules or lighting, Renesas recommends the RL78/F1x or RH850 families instead. The UPD78F1146AGK-GAJ-AX datasheet explicitly excludes transportation equipment from its recommended applications list.
UPD78F1146AGK-GAJ-AX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- Series:
- 78K0R/Kx3
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- 78K/0R
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- 3-Wire SIO, I2C, LINbus, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 50
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 12K 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:
UPD78F1146AGK-GAJ-AX FAQ
1.How can I place an order for UPD78F1146AGK-GAJ-AX through Aetrix?
Please submit a Request for Quotation (RFQ) for UPD78F1146AGK-GAJ-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 UPD78F1146AGK-GAJ-AX reliable?
The price and inventory of UPD78F1146AGK-GAJ-AX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPD78F1146AGK-GAJ-AX is usually 5 days.
3.What payment methods are accepted for UPD78F1146AGK-GAJ-AX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPD78F1146AGK-GAJ-AX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPD78F1146AGK-GAJ-AX?
UPD78F1146AGK-GAJ-AX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPD78F1146AGK-GAJ-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 UPD78F1146AGK-GAJ-AX?
For technical support, including UPD78F1146AGK-GAJ-AX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPD78F1146AGK-GAJ-AX requirements.
6.How does Aetrix verify that UPD78F1146AGK-GAJ-AX is sourced from the original manufacturer or authorized distributors?
All UPD78F1146AGK-GAJ-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 UPD78F1146AGK-GAJ-AX meets industry standards.
7.What is the process for return or replacement of UPD78F1146AGK-GAJ-AX?
All UPD78F1146AGK-GAJ-AX units undergo pre-shipment inspection (PSI). If there is an issue with UPD78F1146AGK-GAJ-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 UPD78F1146AGK-GAJ-AX part is unused and in its original packaging.
Return procedure for UPD78F1146AGK-GAJ-AX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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