Renesas UPD78F0445GB(R)-GAH-AX

Overview

UPD78F0445GB(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. It operates at up to 20 MHz, supports 10-bit ADC with 12 channels, and targets low-power embedded applications requiring segment-based display control.

For engineers reviewing the UPD78F0445GB(R)-GAH-AX datasheet, UPD78F0445GB(R)-GAH-AX pinout, UPD78F0445GB(R)-GAH-AX application, or UPD78F0445GB(R)-GAH-AX equivalent, key selection criteria include LCD segment drive capability (up to 288 segments), Flash endurance (100,000 write/erase cycles), operating voltage range (1.8–5.5 V), and industrial temperature grade (−40°C to +85°C).

Technical Context

The UPD78F0445GB(R)-GAH-AX implements the 78K0 CPU core with 16-bit addressing, supporting 131 instructions and 8-level priority interrupt handling. Its on-chip peripherals include a real-time counter (RTC), watchdog timer (WDT), UART, I²C-compatible serial interface, and 16-bit timer arrays with input capture/output compare functionality.

It integrates a dedicated LCD controller capable of static, 2-, 3-, or 4-multiplex driving with programmable bias and frame frequency, alongside a 10-bit successive-approximation ADC with internal reference and sample-and-hold circuitry - all operating within the same 1.8–5.5 V supply range as the core logic.

Key Specifications

Pinout & Package

UPD78F0445GB(R)-GAH-AX is housed in a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per Renesas User's Manual Rev.2.00 (R01UH0180EJ0200), Section 2.1.3 (78K0/LE3 Pin Function List) and Section 1.4.3 (Pin Configuration).

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F0445GB(R)-GAH-AX, R5F100PLGSP#30 trades LCD integration for lower power and newer architecture, while UPD78F0532GC-GAD-AX offers scalable memory headroom within the same footprint and peripheral set.

Availability

UPD78F0445GB(R)-GAH-AX is available at Aetrix Electronics and suitable for smart metering, portable medical devices, industrial HMIs, and home appliance control panels requiring stable component supply and long-term industrial lifecycle support.

Supply support for UPD78F0445GB(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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The 78K0/LE3 product line delivers cost-optimized 8-bit MCUs with integrated LCD controllers for display-intensive embedded systems - designed specifically for applications where segment-based visual feedback is essential and board space is constrained.

FAQ

What is the maximum LCD segment count supported by UPD78F0445GB(R)-GAH-AX?

UPD78F0445GB(R)-GAH-AX supports up to 288 LCD segments using its integrated controller in 4-multiplex mode (8 commons × 36 segments). This is confirmed in Section 1.1 "Features" and Section 4.1.3 of the 78K0/Lx3 Hardware User's Manual (Rev.2.00). The controller allows flexible configuration across static, 2-, 3-, and 4-multiplex driving schemes, making UPD78F0445GB(R)-GAH-AX suitable for multi-digit numeric and icon-based displays without external driver ICs.

Does UPD78F0445GB(R)-GAH-AX include a hardware real-time counter (RTC)?

Yes, UPD78F0445GB(R)-GAH-AX includes a dedicated real-time counter (RTC) module with calendar function (year/month/day/hour/minute/second), independent 32.768 kHz sub-clock input support, and alarm interrupt capability. This is documented in Section 1.7 "Outline of Functions" and Chapter 12 of the 78K0/Lx3 User's Manual. The RTC continues operation during STOP mode, enabling UPD78F0445GB(R)-GAH-AX to maintain accurate timekeeping in ultra-low-power applications such as battery-operated meters and medical loggers.

What development tools are officially supported for UPD78F0445GB(R)-GAH-AX?

Officially supported tools for UPD78F0445GB(R)-GAH-AX include QB-MINI2 on-chip debugger (U18371E), RA78K0 assembler (Ver.4.01), CC78K0 C compiler (Ver.4.00), and PM+ IDE (Ver.6.30). These are listed in the "Documents Related to Development Tools" section of the User's Manual (R01UH0180EJ0200). Renesas also provides application notes for Flash programming and peripheral usage - all validated for UPD78F0445GB(R)-GAH-AX and other 78K0/LE3 devices.

Is UPD78F0445GB(R)-GAH-AX qualified for industrial temperature operation?

Yes, UPD78F0445GB(R)-GAH-AX is rated for industrial temperature range: −40°C to +85°C. This qualification is stated in Section 7 ("Quality Grades") of the User's Manual and confirmed in the device's ordering information table (Section 1.3), where the "GAH" suffix denotes industrial-grade packaging. Renesas classifies this part under the "Standard" quality grade, explicitly approved for industrial robots, machine tools, and test equipment - confirming UPD78F0445GB(R)-GAH-AX's suitability for harsh non-automotive environments.

What is the Flash memory endurance specification for UPD78F0445GB(R)-GAH-AX?

UPD78F0445GB(R)-GAH-AX guarantees 100,000 write/erase cycles for its 64 KB on-chip Flash memory, with 128-byte block erase granularity. This specification is provided in Section 1.1 "Features" and electrical characteristics tables of the 78K0/Lx3 User's Manual. The Flash supports self-programming via Renesas' Self Programming Library Type01, enabling field firmware updates - a critical requirement for UPD78F0445GB(R)-GAH-AX deployments in remote or maintenance-constrained installations.