Renesas UPD78F1165AGC(S)-UEU-AX

Overview

UPD78F1165AGC(S)-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 12-bit ADC (8 channels), UART, I²C, and timer modules. It operates at up to 20 MHz with supply voltage range of 2.7–5.5 V and targets industrial control and sensor interface applications requiring deterministic real-time response.

For engineers reviewing the UPD78F1165AGC(S)-UEU-AX datasheet, UPD78F1165AGC(S)-UEU-AX pinout, UPD78F1165AGC(S)-UEU-AX application, or UPD78F1165AGC(S)-UEU-AX equivalent, key selection considerations include its 100-pin LQFP package, 12-bit ADC resolution with sample-and-hold, dual UART support with LIN-compatibility, and built-in watchdog timer with window function for safety-critical embedded control.

Technical Context

The UPD78F1165AGC(S)-UEU-AX implements the 78K0R CPU core with 16-bit architecture, Harvard memory organization, and instruction set compatible with earlier 78K/III devices. It supports three power-saving modes (HALT, STOP, and SNOOZE) with wake-up via external interrupt or peripheral event.

Its on-chip Flash uses SuperFlash® technology licensed from Silicon Storage Technology, enabling 100,000 write/erase cycles and data retention of 20 years at 85°C. The ADC includes programmable conversion start triggers (software, timer, or external pin), selectable reference sources (AVREF0/AVREF1 or internal bandgap), and scan mode across up to 8 input channels.

Key Specifications

Pinout & Package

The UPD78F1165AGC(S)-UEU-AX is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per port group (P0–P15), analog references (AVREF0/AVREF1), power domains (VDD/EVDD0/EVDD1, VSS/EVSS0/EVSS1), and dedicated control signals (RESET, REGC, FLMD0).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100PLAFB#30 and MB95F622KPMC-GSE1, the UPD78F1165AGC(S)-UEU-AX offers balanced performance for industrial control with LIN-ready UART and proven Flash reliability-making it optimal for cost-sensitive, non-CAN, safety-aware designs where legacy 78K ecosystem compatibility matters.

Availability

UPD78F1165AGC(S)-UEU-AX is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, building automation panels, and appliance user interfaces requiring stable component supply and long-term manufacturability.

Supply support for UPD78F1165AGC(S)-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 formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The 78K0R/KG3 product line delivers cost-optimized 16-bit MCUs targeting industrial equipment, home appliances, and sensor-based systems where deterministic real-time control, Flash endurance, and peripheral integration outweigh raw computational throughput.

FAQ

What is the maximum operating frequency of the UPD78F1165AGC(S)-UEU-AX?

The UPD78F1165AGC(S)-UEU-AX operates at a maximum CPU clock frequency of 20 MHz under recommended supply conditions (2.7–5.5 V). At 3.3 V, the device supports up to 16 MHz without wait states; higher frequencies require appropriate voltage scaling and timing margin verification per the electrical specifications table in the Renesas datasheet. The actual achievable frequency depends on ambient temperature and PCB layout stability.

Does the UPD78F1165AGC(S)-UEU-AX support in-circuit debugging?

Yes, the UPD78F1165AGC(S)-UEU-AX supports in-circuit debugging via the on-chip debug interface using Renesas QB-MINI2 or ID78K0R-QB tools. Debug functionality includes breakpoint setting, register and memory inspection, and real-time variable watch-all accessible through the RA78K0R IDE. The UPD78F1165AGC(S)-UEU-AX requires no external debug header; only four dedicated pins (CLK, RESET, TDI, TDO) are needed for connection.

What ADC reference options are available on the UPD78F1165AGC(S)-UEU-AX?

The UPD78F1165AGC(S)-UEU-AX supports three ADC reference configurations: external reference via AVREF0/AVREF1 pins, internal bandgap reference (~1.45 V), or VDD as reference. Selection is controlled by the ADM0 register's ADREF bits. Using AVREF0/AVREF1 enables ratiometric measurements against stable external references, while the internal bandgap provides consistent scaling independent of supply variation - both options are fully supported in the UPD78F1165AGC(S)-UEU-AX.

Is the UPD78F1165AGC(S)-UEU-AX qualified for automotive applications?

No, the UPD78F1165AGC(S)-UEU-AX is rated for Standard quality grade per Renesas classification, intended for industrial, office, and consumer equipment-not automotive or safety-critical transportation systems. It does not meet AEC-Q100 stress test requirements. For automotive use, Renesas recommends RL78/F13 or RH850 families. The UPD78F1165AGC(S)-UEU-AX is explicitly excluded from "High Quality" or "Specific" grade applications without written consent.

How many UART interfaces does the UPD78F1165AGC(S)-UEU-AX include, and what protocols do they support?

The UPD78F1165AGC(S)-UEU-AX integrates two independent UART modules: UART0 and UART1. UART0 supports standard asynchronous communication only. UART1 adds LIN 2.1 physical layer support-including break detection, sync field generation, and PID checksum calculation-enabling direct connection to LIN bus transceivers without external protocol translation. Both UARTs operate independently and can be configured simultaneously in the UPD78F1165AGC(S)-UEU-AX.