Renesas UPD78F0547AGK(R)-GAK-AX

Overview

UPD78F0547AGK(R)-GAK-AX from Renesas Electronics is an 8-bit single-chip microcontroller in the 78K0/KF2 family, featuring 128 KB on-chip Flash memory, 8 KB RAM, and a maximum CPU clock of 20 MHz. It integrates a 10-bit A/D converter with 16 channels, UART, I²C, and 16-bit timer arrays, and operates across industrial temperature range (−40°C to +85°C) in a 64-pin LQFP package. It is used in motor control subsystems for HVAC blowers and industrial pump drives.

For engineers reviewing the UPD78F0547AGK(R)-GAK-AX datasheet, UPD78F0547AGK(R)-GAK-AX pinout, UPD78F0547AGK(R)-GAK-AX application, or UPD78F0547AGK(R)-GAK-AX equivalent, key selection criteria include Flash endurance (100,000 write/erase cycles), A/D conversion time (1.1 μs typical), interrupt latency (2–4 CPU cycles), and support for self-programming library Type01 per U17516E.

Technical Context

The UPD78F0547AGK(R)-GAK-AX implements the 78K0S core with 16-bit index registers and 8-bit accumulator architecture, supporting 131 instructions including bit manipulation and block transfer. Its peripheral set includes three 16-bit timer arrays (each with capture/compare/PWM output), a watchdog timer with independent clock source, and a voltage regulator (REGC pin) enabling single-supply operation at 2.7–5.5 V.

It uses a flash memory array based on licensed SuperFlash® technology (100,000 erase/write cycles, 20-year data retention), supports in-system programming via on-chip bootloader, and features dual clock system with high-speed main oscillator (1–20 MHz X1) and sub-oscillator (32.768 kHz) for real-time clock operation.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F0547AGK(R)-GAK-AX, R5F104PJAFB#30 offers higher efficiency but requires full firmware porting and layout revision, while UPD78F0537AGK(R)-GAK-AX provides true pin-and-code compatibility with reduced memory-ideal for derivative product variants.

Availability

UPD78F0547AGK(R)-GAK-AX is available at Aetrix Electronics and suitable for motor control subsystems, industrial sensor nodes, home appliance UI controllers, and programmable power supply monitors requiring stable component supply and long-term lifecycle support.

Supply support for UPD78F0547AGK(R)-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, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The 78K0/KF2 product line delivers cost-optimized, high-reliability 8-bit MCUs targeting industrial automation, consumer appliances, and building control systems with emphasis on low-power operation and robust flash endurance.

FAQ

What is the maximum operating frequency of the UPD78F0547AGK(R)-GAK-AX?

The UPD78F0547AGK(R)-GAK-AX supports a maximum CPU clock frequency of 20 MHz, achievable using an external crystal (1–20 MHz) connected to the X1/X2 pins or an internal high-speed RC oscillator. This frequency governs instruction execution speed, timer resolution, and A/D conversion rate, and is specified across the full industrial temperature range (−40°C to +85°C).

Does the UPD78F0547AGK(R)-GAK-AX support in-system programming?

Yes, the UPD78F0547AGK(R)-GAK-AX supports in-system programming via its on-chip bootloader and the Renesas Self Programming Library Type01 (document U17516E). This allows field firmware updates without removing the device from the PCB, leveraging the 128 KB Flash memory with 100,000 write/erase cycles and 20-year data retention.

What is the role of the REGC pin on the UPD78F0547AGK(R)-GAK-AX?

The REGC pin on the UPD78F0547AGK(R)-GAK-AX connects to an external 1.0 μF capacitor to stabilize the internal voltage regulator, which generates a regulated 1.8 V supply for the CPU core. This decouples core logic operation from fluctuations in the main VDD supply (2.7–5.5 V), ensuring consistent timing and reliable operation under variable load conditions.

How many A/D input channels does the UPD78F0547AGK(R)-GAK-AX provide?

The UPD78F0547AGK(R)-GAK-AX provides 16 analog input channels for its 10-bit successive-approximation A/D converter. These channels are mapped across ports P0 (AN0–AN6), P1 (AN7–AN15), and support simultaneous sampling triggers from timer units, enabling synchronized current/voltage measurement in motor control applications.

Is the UPD78F0547AGK(R)-GAK-AX pin-compatible with other 78K0/KF2 devices?

Yes, the UPD78F0547AGK(R)-GAK-AX shares the same 64-pin LQFP package and pin assignment with other members of the 78K0/KF2 family, including UPD78F0544AGK(R)-GAK-AX, UPD78F0545AGK(R)-GAK-AX, and UPD78F0546AGK(R)-GAK-AX. Pin compatibility extends to power, reset, oscillator, and peripheral signal locations, enabling hardware reuse across firmware variants.