Renesas UPD78F1029GC(R)-UEU-AX

Overview

UPD78F1029GC(R)-UEU-AX from Renesas Electronics is a 16-bit single-chip microcontroller in the 78K0R/KG3-L family, featuring 256 KB on-chip Flash memory, 24 KB RAM, and integrated peripherals including 12-bit ADC (16 channels), 8-bit D/A converter (2 channels), and CAN 2.0B controller. It operates at up to 20 MHz with supply voltage range of 2.7–5.5 V and targets embedded control in industrial automation and automotive body electronics.

For engineers reviewing the UPD78F1029GC(R)-UEU-AX datasheet, UPD78F1029GC(R)-UEU-AX pinout, UPD78F1029GC(R)-UEU-AX application, or UPD78F1029GC(R)-UEU-AX equivalent, key selection considerations include Flash endurance (100,000 write/erase cycles), CAN interface compliance, real-time interrupt latency (<1.5 µs), and support for I²C, UART, and LIN communication protocols.

Technical Context

The UPD78F1029GC(R)-UEU-AX implements the 78K0R CPU core with 16-bit architecture, Harvard memory organization, and instruction set compatible with earlier 78K0 devices. It integrates dual voltage domains (EVDD0/EVSS0 for analog, EVDD1/EVSS1 for digital I/O) and supports low-power modes including HALT and STOP with wake-up via external interrupt or peripheral event.

Its on-chip peripherals include a 16-bit timer array unit (TAU) with PWM output capability, watchdog timer with independent clock source, and power-on reset circuit with programmable delay. The device uses SuperFlash® technology licensed from Silicon Storage Technology for reliable Flash programming and data retention over 20 years at 85°C.

Key Specifications

Pinout & Package

UPD78F1029GC(R)-UEU-AX is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignment follows the 78K0R/KG3-L standard layout defined in Rev.4.00 User's Manual Section 3.1.2 and Figure 3.2.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with UPD78F1029GC(R)-UEU-AX, R5F100PLGSP#30 trades CAN and Flash capacity for lower power and cost, while UPD78F1030GC(R)-UEU-AX offers direct scalability within the same footprint and toolchain-enabling reuse of PCB layout and driver software.

Availability

UPD78F1029GC(R)-UEU-AX is available at Aetrix Electronics and suitable for industrial motor drives, automotive body electronics, and smart power distribution requiring stable component supply across multi-year production cycles.

Supply support for UPD78F1029GC(R)-UEU-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 Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The 78K0R/KG3-L product line delivers high-integration 16-bit MCUs optimized for real-time control in harsh environments, with emphasis on CAN connectivity, analog precision, and long-term industrial reliability.

FAQ

What is the maximum operating frequency of the UPD78F1029GC(R)-UEU-AX?

The UPD78F1029GC(R)-UEU-AX operates at up to 20 MHz when powered at 5.0 V, and up to 16 MHz at 3.3 V. Its internal PLL allows flexible clock generation from external crystals or oscillators, supporting precise timing for CAN bit-rate configuration and ADC sampling synchronization. The actual maximum frequency depends on supply voltage and ambient temperature per the Electrical Characteristics table in the Renesas datasheet.

Does the UPD78F1029GC(R)-UEU-AX include a hardware CAN controller?

Yes, the UPD78F1029GC(R)-UEU-AX integrates a full CAN 2.0B-compliant controller with message objects, acceptance filtering, and automatic retransmission. It supports both standard and extended frame formats and operates at bit rates up to 1 Mbps. Note that an external CAN transceiver is still required for physical layer interfacing, as the UPD78F1029GC(R)-UEU-AX provides only the protocol controller.

What is the Flash memory endurance specification for the UPD78F1029GC(R)-UEU-AX?

The UPD78F1029GC(R)-UEU-AX features 256 KB of on-chip Flash memory built with SuperFlash® technology, rated for 100,000 write/erase cycles and guaranteed data retention of 20 years at 85°C. This endurance level supports field firmware updates and parameter storage in industrial applications where long service life and infrequent reprogramming are required.

How many analog-to-digital converter (ADC) channels does the UPD78F1029GC(R)-UEU-AX support?

The UPD78F1029GC(R)-UEU-AX includes a 12-bit successive-approximation ADC with 16 input channels (AN0–AN15), configurable for single-ended or differential operation. Conversion time is 1.2 µs at maximum resolution, and the ADC supports hardware-triggered sampling synchronized to TAU timers or external events-critical for motor current sensing and closed-loop control.

What power supply domains does the UPD78F1029GC(R)-UEU-AX use for analog and digital circuits?

The UPD78F1029GC(R)-UEU-AX employs three independent power domains: VDD/VSS for core logic, EVDD0/EVSS0 for analog peripherals (ADC, DAC, comparators), and EVDD1/EVSS1 for digital I/O ports. This separation minimizes noise coupling between analog and digital sections, ensuring ±1 LSB accuracy in the 8-bit D/A converters and stable 12-bit ADC performance under dynamic load conditions.