Renesas UPD78F0453GK(S)-GAJ-AX

Overview

UPD78F0453GK(S)-GAJ-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 (8 channels), and targets low-power embedded applications with segment-based LCD displays such as industrial control panels and home appliance interfaces.

For engineers reviewing the UPD78F0453GK(S)-GAJ-AX datasheet, UPD78F0453GK(S)-GAJ-AX pinout, UPD78F0453GK(S)-GAJ-AX application, or UPD78F0453GK(S)-GAJ-AX equivalent, key selection criteria include LCD segment drive capability (up to 160 segments), Flash endurance (100,000 write/erase cycles), operating voltage range (1.8–5.5 V), and built-in real-time counter with low-voltage operation support.

Technical Context

The UPD78F0453GK(S)-GAJ-AX implements the 78K0 CPU core with 16-bit addressing, supporting 131 instructions and a 3-stage pipeline. Its on-chip peripherals include a 10-bit ADC with sample-and-hold, programmable watchdog timer, UART/SIO, I²C-compatible serial interface, and 16-bit timer arrays (TM00–TM02) with capture/compare functionality.

It integrates a dedicated LCD controller/driver supporting static to 1/4-duty, 1/3-bias configurations with internal charge pump and adjustable VLCD voltage. The device uses SuperFlash® technology for Flash memory and includes EEPROM emulation library support via on-chip ROM routines.

Key Specifications

Pinout & Package

UPD78F0453GK(S)-GAJ-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).

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F0453GK(S)-GAJ-AX, R5F100PLAFB#30 offers modern low-power architecture and integrated EEPROM but lacks native 1.8 V operation, while UPD78F0533GK-GAJ-AX provides scalable Flash/RAM within the same legacy 78K0 ecosystem and pinout - enabling drop-in firmware expansion.

Availability

UPD78F0453GK(S)-GAJ-AX is available at Aetrix Electronics and suitable for industrial control panels, home appliance interfaces, and portable medical devices requiring stable component supply and long-term manufacturing continuity.

Supply support for UPD78F0453GK(S)-GAJ-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 connectivity solutions for industrial, automotive, and IoT applications.

The 78K0/LE3 product line delivers cost-optimized 8-bit MCUs with integrated LCD controllers for applications demanding reliable segment display control, low-voltage operation, and field-proven firmware stability in resource-constrained environments.

FAQ

What is the maximum LCD segment count supported by UPD78F0453GK(S)-GAJ-AX?

The UPD78F0453GK(S)-GAJ-AX supports up to 160 LCD segments using its integrated controller/driver with COM0–COM7 and SEG outputs. This configuration enables static, 1/2-, 1/3-, or 1/4-duty drive modes with programmable bias and VLCD voltage control - verified in Renesas User's Manual R01UH0180EJ0200 Section 1.1 and Figure 1.2. The UPD78F0453GK(S)-GAJ-AX achieves this without external driver ICs, reducing system cost and board area.

Does UPD78F0453GK(S)-GAJ-AX support in-circuit debugging?

Yes, UPD78F0453GK(S)-GAJ-AX supports full in-circuit debugging via the on-chip debug interface compatible with QB-MINI2 and QB-78K0LX3 emulators. It enables real-time register inspection, breakpoint setting, and flash programming through the single-wire debug (SWD) channel - documented in Renesas User's Manual R01UH0180EJ0200 Section 4.2 and U18371E hardware manual. The UPD78F0453GK(S)-GAJ-AX requires no external debug header, simplifying prototype validation.

What is the Flash memory endurance specification for UPD78F0453GK(S)-GAJ-AX?

The UPD78F0453GK(S)-GAJ-AX Flash memory is rated for 100,000 write/erase cycles per block, as specified in Renesas Electrical Characteristics (R01UH0180EJ0200 Section 5.2). This endurance level supports frequent firmware updates and EEPROM emulation use cases. The UPD78F0453GK(S)-GAJ-AX leverages SuperFlash® technology licensed from SST, ensuring consistent retention (>10 years at 85 °C) and sector-level erase granularity for robust data logging implementations.

Can UPD78F0453GK(S)-GAJ-AX operate from a single 3.3 V supply?

Yes, UPD78F0453GK(S)-GAJ-AX operates fully across 1.8 V to 5.5 V, including standard 3.3 V systems. At 3.3 V, it supports all peripherals - LCD controller, 10-bit ADC, UART, and timers - at up to 20 MHz (with appropriate clock source). This is confirmed in the Absolute Maximum Ratings and DC Characteristics tables (R01UH0180EJ0200 Sections 5.1–5.2). The UPD78F0453GK(S)-GAJ-AX eliminates level-shifting requirements in mixed-voltage designs.

Is there built-in EEPROM functionality in UPD78F0453GK(S)-GAJ-AX?

The UPD78F0453GK(S)-GAJ-AX does not include physical EEPROM but provides ROM-resident EEPROM emulation library (Type01) that uses Flash memory sectors to emulate EEPROM behavior - supporting byte-write, wear leveling, and 100,000-cycle endurance. This is detailed in U18275E User's Manual and enabled via API calls in CC78K0. The UPD78F0453GK(S)-GAJ-AX thus delivers EEPROM-like functionality without adding discrete memory ICs.