Renesas UPD78F1165GC-UEU-AX

Overview

UPD78F1165GC-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), 16-bit timer arrays (TAU), UART, I²C, and CAN 2.0B controller. It operates at up to 20 MHz with supply voltage range 2.7–5.5 V and targets industrial control and automotive body electronics.

For engineers reviewing the UPD78F1165GC-UEU-AX datasheet, UPD78F1165GC-UEU-AX pinout, UPD78F1165GC-UEU-AX application, or UPD78F1165GC-UEU-AX equivalent, key selection criteria include CAN interface support, Flash endurance (100,000 write/erase cycles), operating temperature range (−40°C to +85°C), and compliance with AEC-Q100 Grade 2 for automotive use cases.

Technical Context

The UPD78F1165GC-UEU-AX implements the 78K0R CPU core with 16-bit architecture, Harvard memory structure, and instruction set compatible with earlier 78K0 devices. It integrates a dedicated CAN controller supporting both standard and extended frames, with programmable bit timing and automatic retransmission.

On-chip peripherals include a 12-bit successive-approximation ADC with sample-and-hold, dual 16-bit timer arrays with PWM output capability, and three serial interfaces (UART, I²C, and synchronous serial). Power management features include HALT, STOP, and SNOOZE modes with wake-up via external interrupt or peripheral event.

Key Specifications

Pinout & Package

The UPD78F1165GC-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 across 16 I/O ports (P0–P15), analog inputs (AVREF0/1, AVSS), power domains (VDD/EVDD0/EVDD1, VSS/EVSS0/EVSS1), reset (RESET), clock (X1/X2), and dedicated peripheral pins (CANRX/CANTX, TXD0/RXD0, etc.). Unused pins require explicit pull-up or pull-down per Renesas handling guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100PLGSP#30 and MC9S12XEQ512MAL, the UPD78F1165GC-UEU-AX delivers optimal balance of CAN integration, AEC-Q100 qualification, and power efficiency in a compact 100-pin footprint - making it preferred for cost-constrained, safety-aware body electronics where protocol offload and thermal margin matter.

Availability

UPD78F1165GC-UEU-AX is available at Aetrix Electronics and suitable for automotive body control units, industrial motor drive interfaces, smart power distribution modules, and diagnostic communication gateways requiring stable component supply across multi-year production cycles.

Supply support for UPD78F1165GC-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 automotive, industrial, and IoT markets.

The UPD78F1165GC-UEU-AX belongs to the 78K0R/KG3 product line - designed specifically for cost-sensitive, function-integrated automotive body electronics and industrial control applications requiring CAN, high-resolution ADC, and robust flash reliability.

FAQ

What is the maximum operating frequency of the UPD78F1165GC-UEU-AX?

The UPD78F1165GC-UEU-AX supports a maximum system clock frequency of 20 MHz via its on-chip PLL. The base crystal oscillator input (X1/X2) ranges from 1 to 20 MHz, and the PLL can multiply this by factors of 1–8. At 20 MHz operation, the 78K0R core executes instructions at 10 million instructions per second (MIPS), enabling real-time response in motor control and CAN messaging tasks. The UPD78F1165GC-UEU-AX maintains timing integrity across its full −40°C to +85°C operating range.

Does the UPD78F1165GC-UEU-AX include a built-in CAN controller?

Yes, the UPD78F1165GC-UEU-AX integrates a fully compliant CAN 2.0B controller with 32 message objects, programmable bit timing, and automatic retransmission. It supports both standard (11-bit) and extended (29-bit) identifier frames and includes dedicated CANRX and CANTX pins. However, an external CAN transceiver (e.g., TJA1042 or SN65HVD230) is required for physical layer signaling. This integrated controller eliminates the need for discrete CAN protocol ICs in UPD78F1165GC-UEU-AX-based designs.

What is the Flash memory endurance specification for the UPD78F1165GC-UEU-AX?

The UPD78F1165GC-UEU-AX specifies 100,000 write/erase cycles for its 128 KB on-chip Flash memory, verified per JEDEC standards. Its embedded data flash (1 KB) also meets the same endurance rating and supports byte-level erase. This allows reliable field updates, parameter storage, and calibration retention over the lifetime of automotive and industrial equipment. Renesas guarantees this endurance under rated operating conditions (−40°C to +85°C, VDD = 2.7–5.5 V), and the UPD78F1165GC-UEU-AX includes hardware ECC for read-after-write verification.

Is the UPD78F1165GC-UEU-AX qualified for automotive applications?

Yes, the UPD78F1165GC-UEU-AX is qualified to AEC-Q100 Grade 2 (−40°C to +105°C ambient, though rated for −40°C to +85°C operation), making it suitable for automotive body electronics, chassis, and infotainment subsystems. It complies with automotive reliability stress tests including HTOL, TC, and ESD (HBM ±2 kV). The UPD78F1165GC-UEU-AX is classified as "Standard" quality grade per Renesas documentation, and its design includes fail-safe features such as windowed watchdog timers and clock failure detection.

How does the UPD78F1165GC-UEU-AX handle power management in low-power applications?

The UPD78F1165GC-UEU-AX offers three low-power modes: HALT (CPU stopped, peripherals active), STOP (CPU and most peripherals halted, RAM retained), and SNOOZE (selected peripherals active while CPU sleeps). In STOP mode, typical current consumption is 1.2 μA with wake-up possible via CAN bus activity, external interrupt, or RTC alarm. The UPD78F1165GC-UEU-AX's internal regulator (enabled via REGC pin) further optimizes power delivery, allowing single-supply operation from 12 V automotive rails with external DC/DC conversion.