Renesas UPD78F0453GB(S)-GAH-AX

Overview

UPD78F0453GB(S)-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 (8 channels), and targets embedded control applications with display interface requirements such as industrial HMIs and portable instrumentation.

For engineers reviewing the UPD78F0453GB(S)-GAH-AX datasheet, UPD78F0453GB(S)-GAH-AX pinout, UPD78F0453GB(S)-GAH-AX application, or UPD78F0453GB(S)-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 (2.7–5.5 V), and built-in real-time counter with low-voltage operation support.

Technical Context

The UPD78F0453GB(S)-GAH-AX implements the 78K0 CPU core with 16-bit addressing, supporting 131 instructions and three addressing modes for efficient code density. Its on-chip peripherals include a 10-bit successive-approximation ADC with sample-and-hold, programmable watchdog timer, and serial interface (UART/SIO) with clock synchronous capability.

Hardware LCD control is implemented via dedicated segment/common drivers supporting static to 1/8-duty drive with internal bias generation and VLCD regulation. The device integrates a 32.768 kHz sub-clock oscillator input and supports dual clock domains - main (up to 20 MHz) and sub-clock - enabling low-power real-time counter operation during STOP mode.

Key Specifications

Pinout & Package

UPD78F0453GB(S)-GAH-AX is housed in a 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch) package 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 microcontroller with integrated LCD driver applications.

Compared with UPD78F0453GB(S)-GAH-AX, R5F100PLGSP#V0 offers newer architecture and lower active current but sacrifices hardware LCD integration, while UPD78F0533GC-GAH-AX provides scalable memory headroom within the same functional family - both require layout changes, making UPD78F0453GB(S)-GAH-AX optimal for cost-sensitive, display-centric designs with fixed 64-pin constraints.

Availability

UPD78F0453GB(S)-GAH-AX is available at Aetrix Electronics and suitable for industrial HMI panels, portable medical instruments, and smart energy meters requiring stable component supply and long-term lifecycle support.

Supply support for UPD78F0453GB(S)-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/Lx3 product line delivers cost-optimized 8-bit MCUs with integrated peripherals like LCD controllers, targeting display-enabled embedded systems where reliability, low power, and design simplicity are critical.

FAQ

What is the maximum LCD segment count supported by the UPD78F0453GB(S)-GAH-AX?

The UPD78F0453GB(S)-GAH-AX supports up to 288 LCD segments using its integrated controller/driver, configured across 36 segment outputs (SEG0–SEG35) and 8 common outputs (COM0–COM7). This enables static, 1/2-, 1/3-, 1/4-, 1/5-, 1/6-, 1/7-, or 1/8-duty drive schemes - verified in Renesas User's Manual R01UH0180EJ0200 Section 1.1 and Table 1.1.

Does the UPD78F0453GB(S)-GAH-AX include on-chip debug support?

Yes, the UPD78F0453GB(S)-GAH-AX includes on-chip debugging capability compatible with Renesas QB-MINI2 and QB-78K0LX3 emulators. It supports full breakpoint, step execution, and register/memory inspection via the single-wire debug interface - detailed in Section 2.2.18 (FLMD0) and Appendix D of the R01UH0180EJ0200 manual.

What is the Flash memory endurance specification for the UPD78F0453GB(S)-GAH-AX?

The UPD78F0453GB(S)-GAH-AX specifies 100,000 write/erase cycles for its 64 KB on-chip Flash memory, with 128-byte block erase granularity. This endurance rating is guaranteed under standard operating conditions (Ta = −40 to +85°C, VDD = 2.7–5.5 V) per Renesas reliability data sheet R01DS0127EJ0200.

Can the UPD78F0453GB(S)-GAH-AX operate from a single 3 V battery?

Yes, the UPD78F0453GB(S)-GAH-AX operates across 2.7 V to 5.5 V, making it fully compatible with single 3 V coin-cell or alkaline battery sources. Its sub-clock domain remains functional down to 2.7 V, enabling real-time counter operation and LCD refresh during low-voltage battery discharge - confirmed in Section 3.2.1 (Electrical Characteristics) of R01UH0180EJ0200.

Is there hardware support for EEPROM emulation in the UPD78F0453GB(S)-GAH-AX?

Yes, Renesas provides the "78K0 Microcontrollers EEPROM™ Emulation Library Type01" (U18275E) specifically validated for the UPD78F0453GB(S)-GAH-AX. This library implements wear-leveling and atomic write routines using designated Flash sectors to emulate EEPROM functionality with guaranteed data retention (>10 years) and endurance (>100,000 cycles).