Renesas UPD78F0465GB(R)-GAH-AX

Overview

UPD78F0465GB(R)-GAH-AX from Renesas Electronics is an 8-bit single-chip microcontroller in the 78K0/LE3 family, featuring integrated LCD controller/driver, 64 KB on-chip Flash memory, 4 KB RAM, and 39 I/O pins in a 64-pin LQFP package. It operates at up to 20 MHz, supports 10-bit ADC with 16 channels, and targets embedded control applications requiring direct segment-based display driving.

For engineers reviewing the UPD78F0465GB(R)-GAH-AX datasheet, UPD78F0465GB(R)-GAH-AX pinout, UPD78F0465GB(R)-GAH-AX application, or UPD78F0465GB(R)-GAH-AX equivalent, key selection considerations include LCD segment drive capability (up to 288 segments), Flash endurance (10,000 write/erase cycles), operating voltage range (1.8–5.5 V), and industrial temperature grade (−40°C to +85°C).

Technical Context

The UPD78F0465GB(R)-GAH-AX implements the 78K0 CPU core with 16-bit address space, Harvard architecture, and instruction set compatible with earlier 78K0 devices. It integrates dedicated LCD timing generator, static/dynamic segment commons (COM0–COM7), and voltage bias control (VLC0–VLC3) for direct connection to multiplexed LCD panels without external drivers.

On-chip peripherals include 16-bit timer arrays (TAU), watchdog timer (WDT), UART/SIO, I²C-compatible serial interface, and power-on reset (POR) with low-voltage detection (LVD). All I/O ports support CMOS-level input/output with configurable pull-up resistors and noise filter capability.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level (MSL) 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit LCD microcontroller applications.

Compared with UPD78F0465GB(R)-GAH-AX, R5F100PLGSP#30 offers superior active-mode efficiency but demands layout changes, while UPD78F0455GB-GAH-AX provides drop-in compatibility with lower memory capacity-making it ideal for legacy design reuse without hardware revision.

Availability

UPD78F0465GB(R)-GAH-AX is available at Aetrix Electronics and suitable for smart energy metering, industrial HMI panels, portable medical devices, and home appliance control requiring stable component supply and long-term industrial lifecycle support.

Supply support for UPD78F0465GB(R)-GAH-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 manufacturer headquartered in Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and consumer markets.

The 78K0/LE3 product line delivers cost-optimized 8-bit MCUs with integrated LCD controllers for applications demanding segment-based display capability, low power, and robust industrial qualification - targeting metering, HMI, and portable instrumentation.

FAQ

What is the maximum LCD segment count supported by the UPD78F0465GB(R)-GAH-AX?

The UPD78F0465GB(R)-GAH-AX supports up to 288 LCD segments using its integrated controller/driver, configured as 8 commons × 36 segments or 4 commons × 72 segments. This capability is confirmed in the 78K0/Lx3 User's Manual Rev.2.00 Section 1.1 and Section 1.4.3 pin configuration diagrams. The device does not require external segment drivers for this scale of display, reducing system BOM and board area.

Does the UPD78F0465GB(R)-GAH-AX include on-chip debug support?

Yes, the UPD78F0465GB(R)-GAH-AX supports on-chip debugging via the single-wire debug interface compatible with QB-MINI2 and ID78K0-QB tools. Debug functionality includes breakpoint setting, register inspection, and Flash programming - all documented in the 78K0/Lx3 User's Manual Appendix D and Renesas tool documentation U18371E and U18330E.

What is the Flash memory endurance specification for the UPD78F0465GB(R)-GAH-AX?

The UPD78F0465GB(R)-GAH-AX specifies 10,000 write/erase cycles for its 64 KB on-chip Flash memory, as stated in the Electrical Characteristics section of the 78K0/Lx3 User's Manual Rev.2.00. This endurance rating applies under standard industrial temperature conditions and supports field firmware updates throughout typical product lifecycles in metering and industrial control applications.

Can the UPD78F0465GB(R)-GAH-AX operate from a single 3.3 V supply?

Yes, the UPD78F0465GB(R)-GAH-AX operates across 1.8 V to 5.5 V, fully supporting 3.3 V nominal supply. Its I/O pins are 5 V tolerant when configured as inputs, and internal regulators ensure stable core voltage - verified in the Absolute Maximum Ratings and DC Characteristics tables of the 78K0/Lx3 User's Manual Rev.2.00.

Is the UPD78F0465GB(R)-GAH-AX qualified for industrial temperature range?

Yes, the UPD78F0465GB(R)-GAH-AX is rated for −40°C to +85°C ambient operating temperature, meeting industrial-grade requirements as defined in Renesas Quality Grade "Standard" per document C11531E. This qualification is explicitly listed in the ordering information table (Section 1.3) and electrical specifications of the 78K0/Lx3 User's Manual Rev.2.00.