Renesas UPD78F1166AGC(R)-UEU-AX

Overview

UPD78F1166AGC(R)-UEU-AX from Renesas Electronics is a 16-bit single-chip microcontroller in the 78K0R/KG3 family, featuring 128 KB on-chip Flash memory, 8 KB RAM, and integrated peripherals including 10-bit ADC (16 channels), UART, I²C, and 16-bit timer arrays. It operates at up to 20 MHz with supply voltage range 2.7–5.5 V and targets embedded control in industrial sensors and motor-driven appliances.

For engineers reviewing the UPD78F1166AGC(R)-UEU-AX datasheet, UPD78F1166AGC(R)-UEU-AX pinout, UPD78F1166AGC(R)-UEU-AX application, or UPD78F1166AGC(R)-UEU-AX equivalent, key selection considerations include its 100-pin LQFP package, Flash endurance (100,000 write/erase cycles), operating temperature range (−40°C to +85°C), and compliance with Renesas' Standard quality grade for industrial equipment.

Technical Context

The UPD78F1166AGC(R)-UEU-AX implements the 78K0R CPU core with 16-bit architecture, supporting both 8-bit and 16-bit instructions. It integrates a 10-bit successive-approximation ADC with sample-and-hold and programmable conversion start triggers via timer or external signal.

Peripheral integration includes three 16-bit multi-function timers (each with capture/compare/PWM output), two UART channels with LIN support, one I²C interface with multimaster capability, and a 12-channel DMA controller. The device uses SuperFlash® technology licensed from Silicon Storage Technology for its on-chip Flash memory.

Key Specifications

Pinout & Package

UPD78F1166AGC(R)-UEU-AX is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined per Renesas User's Manual U17894EJ9V0UD, Chapter 2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F1166AGC(R)-UEU-AX, R5F100PLAFB#30 offers lower cost but reduced memory and peripheral capability, while UPD78F1167AGC(R)-UEU-AX provides identical functionality with doubled Flash capacity - enabling secure bootloader partitioning and feature-rich firmware without layout change.

Availability

UPD78F1166AGC(R)-UEU-AX is available at Aetrix Electronics and suitable for industrial sensor nodes, home appliance motor controllers, and factory automation I/O modules requiring stable component supply and long-term manufacturability.

Supply support for UPD78F1166AGC(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 Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The 78K0R/KG3 product line delivers high-integration 16-bit MCUs optimized for cost-sensitive, real-time embedded control in industrial equipment and consumer appliances - emphasizing Flash reliability, analog precision, and peripheral flexibility.

FAQ

What is the maximum operating frequency of the UPD78F1166AGC(R)-UEU-AX?

The UPD78F1166AGC(R)-UEU-AX supports a maximum system clock frequency of 20 MHz. This is achieved using either the on-chip oscillator (tunable from 1 to 20 MHz) or an external crystal with optional PLL multiplication. At 20 MHz, the CPU executes instructions with single-cycle access to on-chip RAM and typical 2–3 cycle access to Flash memory, enabling deterministic real-time response for motor control and sensor processing tasks.

Does the UPD78F1166AGC(R)-UEU-AX support in-system programming (ISP)?

Yes, the UPD78F1166AGC(R)-UEU-AX supports full in-system programming via its on-chip Flash memory using the built-in boot ROM and UART interface. The device implements Renesas' Flash self-programming functionality, allowing firmware updates without removing the chip from the board. Programming requires only a standard UART connection and adheres to the protocol defined in the 78K0R Self-Programming Library Type01 User's Manual (U18706E).

What is the Flash memory endurance specification for the UPD78F1166AGC(R)-UEU-AX?

The UPD78F1166AGC(R)-UEU-AX features 128 KB of on-chip Flash memory rated for 100,000 write/erase cycles per sector and guaranteed 10-year data retention at +85°C. This endurance level is validated under Renesas' Standard quality grade testing and applies across the full operating temperature range (−40°C to +85°C), making it suitable for applications requiring frequent field firmware updates such as smart meters and IoT edge nodes.

Is the UPD78F1166AGC(R)-UEU-AX pin-compatible with other devices in the 78K0R/KG3 family?

Yes, the UPD78F1166AGC(R)-UEU-AX shares identical pinout and electrical characteristics with other 100-pin LQFP variants in the 78K0R/KG3 family, including UPD78F1167AGC(R)-UEU-AX and UPD78F1168AGC(R)-UEU-AX. This allows direct PCB reuse when migrating to higher Flash capacities. However, pin compatibility does not extend to earlier 78K0 series or unrelated Renesas families such as RL78 or RX.

What quality grade is assigned to the UPD78F1166AGC(R)-UEU-AX?

The UPD78F1166AGC(R)-UEU-AX is classified under Renesas' Standard quality grade, as confirmed in the official documentation and default classification per Renesas Quality Grades policy. This grade authorizes use in computers, office equipment, communications gear, test instruments, audio/video devices, home appliances, machine tools, personal electronics, and industrial robots - but excludes life-critical, aerospace, nuclear, or medical life-support applications without explicit written consent.