Renesas UPD78F0547AGC-GAD-AX

Overview

UPD78F0547AGC-GAD-AX from Renesas Electronics is an 8-bit single-chip microcontroller in the 78K0/KF2 family, featuring 64 KB on-chip Flash memory, 4 KB RAM, and a 16-bit timer/counter with PWM output capability. It operates at up to 20 MHz CPU clock frequency using an internal high-speed oscillator or external crystal (1–20 MHz), supports 5V operation, and integrates UART, I²C, and 10-bit ADC with 16 channels. It is used in industrial control panels requiring deterministic real-time response and firmware-upgradable logic.

For engineers reviewing the UPD78F0547AGC-GAD-AX datasheet, UPD78F0547AGC-GAD-AX pinout, UPD78F0547AGC-GAD-AX application, or UPD78F0547AGC-GAD-AX equivalent, key selection criteria include Flash endurance (100,000 erase/write cycles), ADC conversion time (≤1.2 μs per channel), interrupt latency (≤3.5 μs), and support for self-programming via on-chip library.

Technical Context

The UPD78F0547AGC-GAD-AX implements the 78K0S CPU core with 16-bit address space and 8-bit data path, executing instructions in 1–4 clock cycles. Its peripheral set includes three 16-bit timers (T0–T2) with capture/compare/PWM modes, one serial interface (UART) with automatic baud rate detection, and one I²C-compatible serial interface supporting master/slave operation.

It uses a dual-voltage supply architecture: EVDD/EVSS for analog peripherals (ADC, voltage reference) and VDD/VSS for digital logic. The device supports two power-saving modes-HALT and STOP-with wake-up via external interrupt, timer match, or serial receive event-and includes a built-in low-voltage detector (LVD) with programmable threshold (2.7 V or 4.2 V).

Key Specifications

Pinout & Package

UPD78F0547AGC-GAD-AX is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin assignments follow the 78K0/KF2 standard layout, including dedicated ports P0–P7, P12–P14, analog inputs (AN0–AN15), and system control pins (RESET, REGC, FLMD0).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104PJAFB#30, UPD78F0547AGC-GAD-AX delivers higher Flash capacity and integrated motor control features but consumes more active current; versus UPD78F0537AGC-GAD-AX, it provides 16 KB additional Flash for complex control algorithms or field-upgradable feature sets without changing PCB layout.

Availability

UPD78F0547AGC-GAD-AX is available at Aetrix Electronics and suitable for industrial motor control, smart metering, factory automation I/O modules, and building HVAC controllers requiring stable component supply across multi-year production cycles.

Supply support for UPD78F0547AGC-GAD-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 management ICs for industrial, automotive, and infrastructure markets.

The 78K0/KF2 product line was designed for cost-sensitive, high-reliability industrial control applications requiring deterministic real-time performance, on-chip Flash endurance, and mixed-signal integration without external support components.

FAQ

What is the maximum operating frequency of the UPD78F0547AGC-GAD-AX?

The UPD78F0547AGC-GAD-AX supports a maximum CPU clock frequency of 20 MHz when using the internal high-speed oscillator or an external crystal in the 1–20 MHz range. At this speed, instruction execution times range from 1 to 4 clock cycles, enabling sub-200 ns minimum interrupt latency for time-critical control tasks.

Does the UPD78F0547AGC-GAD-AX support in-application programming (IAP)?

Yes, the UPD78F0547AGC-GAD-AX includes a ROM-resident self-programming library that enables safe in-application Flash reprogramming. This allows firmware updates over UART or other interfaces without halting real-time operation or requiring external programming hardware, provided the application reserves protected Flash sectors for the bootloader.

What are the ADC specifications of the UPD78F0547AGC-GAD-AX?

The UPD78F0547AGC-GAD-AX integrates a 10-bit successive-approximation ADC with 16 input channels (AN0–AN15), conversion time of ≤1.2 μs per channel, and support for external reference (AVREF) or internal 2.5 V bandgap. It features scan mode, trigger sources (software/timer), and result alignment options for direct use in control algorithms.

Is the UPD78F0547AGC-GAD-AX pin-compatible with other 78K0/KF2 devices?

Yes, the UPD78F0547AGC-GAD-AX shares the same 100-pin LQFP package and pin assignment with all members of the 78K0/KF2 family, including UPD78F0544AGC-GAD-AX through UPD78F0547AGC-GAD-AX and their expanded-specification variants (e.g., UPD78F0547AAGC-GAD-AX). Peripheral register maps and interrupt vectors are consistent across the group.

What power supply configurations does the UPD78F0547AGC-GAD-AX support?

The UPD78F0547AGC-GAD-AX supports dual-supply operation: VDD/VSS for digital logic (4.0–5.5 V) and EVDD/EVSS for analog peripherals (same voltage range). An internal regulator can generate EVDD from VDD when REGC is tied high; otherwise, separate clean analog supplies are recommended to minimize ADC noise coupling.