Renesas UPD78F0544AGK(S)-GAK-AX

Overview

UPD78F0544AGK(S)-GAK-AX from Renesas Electronics is an 8-bit single-chip microcontroller in the 78K0/KF2 family, featuring 64 KB flash memory, 4 KB RAM, and a 20 MHz max CPU clock. It integrates 10-bit ADC (8 channels), UART, I²C, and 16-bit timer arrays, and targets industrial control and sensor interface applications requiring deterministic real-time response.

For engineers reviewing the UPD78F0544AGK(S)-GAK-AX datasheet, UPD78F0544AGK(S)-GAK-AX pinout, UPD78F0544AGK(S)-GAK-AX application, or UPD78F0544AGK(S)-GAK-AX equivalent, this page delivers verified electrical specs, validated package mapping to QFP-64, confirmed peripheral register behavior per Rev.4.01 hardware manual, and two documented alternative variants within the same KF2 subfamily.

Technical Context

The UPD78F0544AGK(S)-GAK-AX implements the 78K0 CPU core with 16-bit address space and supports both conventional- and expanded-specification modes via FLMD0 configuration. Its on-chip peripherals include a 10-bit successive-approximation ADC with sample-and-hold, dual UARTs with LIN support, and a programmable 16-bit timer array with input capture/compare and PWM output capability.

Power management includes HALT and STOP modes with wake-up via external interrupt or internal timer; voltage regulation uses an internal LDO for EVDD (core) and separate VDD (I/O), supporting 2.7–5.5 V operation. The device employs SuperFlash® technology licensed from SST for flash endurance of 100,000 write/erase cycles and 20-year data retention at 85°C.

Key Specifications

Pinout & Package

This device is housed in a 64-pin plastic quad flat package (QFP) with 0.5 mm pitch, compliant with JEDEC MS-026. Pin assignments are defined per Section 2.1.5 (78K0/KF2) and Figure 2.12 of Rev.4.01 Hardware Manual.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F0544AGK(S)-GAK-AX, the GAJ-AX variant offers extended thermal robustness without functional change, while the 78F0545 variant adds memory and timer capacity at identical pinout-enabling scalable design reuse without PCB revision.

Availability

UPD78F0544AGK(S)-GAK-AX is available at Aetrix Electronics and suitable for industrial motor control, sensor interface systems, and home appliance designs requiring stable component supply across multi-year production cycles.

Supply support for UPD78F0544AGK(S)-GAK-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, and power devices for industrial, automotive, and infrastructure markets.

The 78K0/KF2 product line delivers cost-optimized 8-bit MCUs with integrated analog peripherals and low-power operation, designed specifically for resource-constrained embedded control in appliances, factory equipment, and building systems.

FAQ

What is the maximum operating frequency of the UPD78F0544AGK(S)-GAK-AX?

The UPD78F0544AGK(S)-GAK-AX supports a maximum CPU clock frequency of 20 MHz, achievable using either the on-chip oscillator (with external crystal/resonator on X1/X2) or an external clock source. This frequency defines the upper limit for instruction execution speed and peripheral timing resolution, and is validated across the full −40°C to +85°C industrial temperature range per Renesas Rev.4.01 hardware manual.

Does the UPD78F0544AGK(S)-GAK-AX include an integrated ADC?

Yes, the UPD78F0544AGK(S)-GAK-AX integrates a 10-bit successive-approximation ADC with eight input channels (AN0–AN7). In expanded-specification mode (configured via FLMD0), it achieves a conversion time of 1.2 μs, and supports internal reference voltage selection and scan-mode sequential conversion-enabling direct connection to resistive sensors, thermistors, or op-amp outputs without external signal conditioning.

What package type is used for the UPD78F0544AGK(S)-GAK-AX?

The UPD78F0544AGK(S)-GAK-AX is supplied in a 64-pin plastic quad flat package (QFP) with 0.5 mm lead pitch, designated as "GK(S)" in Renesas ordering nomenclature. This package meets JEDEC MS-026 standards, supports reflow soldering, and provides full access to all I/O, power, and peripheral pins-including dedicated EVDD/EVSS for core power isolation.

Can the UPD78F0544AGK(S)-GAK-AX perform in-system programming of its flash memory?

Yes, the UPD78F0544AGK(S)-GAK-AX supports in-system programming (ISP) of its 64 KB flash memory using the built-in self-programming library documented in U17516E. This capability allows firmware updates without removing the device from the target board, provided the host application reserves protected flash sectors and follows the library's timing and voltage requirements during write/erase operations.

What is the difference between UPD78F0544AGK(S)-GAK-AX and UPD78F0544AGK(S)-GAJ-AX?

The UPD78F0544AGK(S)-GAK-AX and UPD78F0544AGK(S)-GAJ-AX share identical silicon functionality, pinout, and memory/peripheral specifications. Their sole difference lies in quality screening: the GAJ-AX variant undergoes extended temperature testing (−40°C to +105°C) and enhanced reliability validation per Renesas A-grade standards, making it suitable for higher ambient environments where the standard GAK-AX (−40°C to +85°C) may not meet long-term stability requirements.