Renesas UPD78F0547DAGK-GAK-AX

Overview

UPD78F0547DAGK-GAK-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 with 10-bit A/D converter (8 channels), serial interface (UART, CSI, I²C), and operates from 2.7 V to 5.5 V supply. It is used in industrial control panels and sensor-based automation systems requiring deterministic real-time response.

For engineers reviewing the UPD78F0547DAGK-GAK-AX datasheet, UPD78F0547DAGK-GAK-AX pinout, UPD78F0547DAGK-GAK-AX application, or UPD78F0547DAGK-GAK-AX equivalent, key selection criteria include flash endurance (100,000 erase/write cycles), A/D conversion time (1.2 μs typical), reset source options (power-on, watchdog, external), and support for in-system programming via on-chip self-programming library.

Technical Context

The UPD78F0547DAGK-GAK-AX implements the 78K0 CPU core with 16-bit address bus and 8-bit data bus, supporting 131 instructions including bit manipulation and multiply/divide operations. Its peripheral set includes three 16-bit timers (T0–T2), one 8-bit timer (T3), watchdog timer, and serial interfaces with programmable baud rate generators.

It integrates a voltage regulator (REGC pin) for internal logic supply, supports multiple clock sources (X1 crystal oscillator up to 20 MHz, internal high-speed RC oscillator), and features power-saving modes including HALT and STOP with wake-up via interrupt or reset. The device uses SuperFlash® technology licensed from SST for flash memory reliability.

Key Specifications

Pinout & Package

UPD78F0547DAGK-GAK-AX is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per port group (P0–P7, P12–P14) and dedicated peripherals (RESET, REGC, FLMD0, AVREF, EVDD/EVSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F0547DAGK-GAK-AX, R5F104GCAFP#30 offers superior low-power performance but sacrifices hardware multiply/divide and advanced PWM features, while UPD78F0537DAGK-GAK-AX provides identical functionality at lower memory capacity - enabling cost-sensitive designs without PCB or firmware redesign.

Availability

UPD78F0547DAGK-GAK-AX is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, programmable logic relays, and medical diagnostic instruments requiring stable component supply across multi-year production cycles.

Supply support for UPD78F0547DAGK-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 8-bit MCUs targeting resource-constrained embedded systems requiring deterministic real-time behavior, integrated analog peripherals, and long-term supply stability - especially in factory automation and building control.

FAQ

What is the maximum operating frequency of the UPD78F0547DAGK-GAK-AX?

The UPD78F0547DAGK-GAK-AX supports a maximum system clock frequency of 20 MHz when using the X1 crystal oscillator input. It also includes an internal high-speed RC oscillator rated at 8 MHz, which can be used for clock source redundancy or low-cost applications where precision timing is not critical. The CPU instruction cycle is derived directly from this clock, enabling consistent timing for real-time control tasks in the UPD78F0547DAGK-GAK-AX.

Does the UPD78F0547DAGK-GAK-AX support in-system programming (ISP)?

Yes, the UPD78F0547DAGK-GAK-AX supports in-system programming via its on-chip self-programming library (SPL), which resides in ROM. This allows firmware updates to be performed in the target application without removing the device or using an external programmer. The SPL supports erasing and writing flash memory sectors under software control, and is certified for 100,000 write/erase cycles - a key capability confirmed in Renesas' U17516E User's Manual for the UPD78F0547DAGK-GAK-AX.

What power supply configurations does the UPD78F0547DAGK-GAK-AX require?

UPD78F0547DAGK-GAK-AX requires two supply domains: a main VDD (2.7 V to 5.5 V) for I/O and logic, and an analog AVREF/AVSS pair for the A/D converter. An external 1.0 μF capacitor must be connected to the REGC pin to stabilize the internal 3.3 V regulator that powers the CPU core. Separate EVDD/EVSS pins provide noise-isolated supply for the A/D converter and comparators - ensuring accurate 10-bit conversions even under noisy digital switching conditions in the UPD78F0547DAGK-GAK-AX.

How many A/D input channels does the UPD78F0547DAGK-GAK-AX have, and what is their resolution?

The UPD78F0547DAGK-GAK-AX integrates an 8-channel, 10-bit successive approximation register (SAR) A/D converter. Each channel can be selected via software, and conversion time is specified at 1.2 μs (typical) with either AVREF or VDD as reference voltage. Input range is 0 V to AVREF, and the A/D module supports scan mode for automatic sequential conversion across multiple channels - a feature documented in Section 2.2.3 of the UPD78F0547DAGK-GAK-AX hardware manual.

Is the UPD78F0547DAGK-GAK-AX pin-compatible with other members of the 78K0/KF2 family?

Yes, the UPD78F0547DAGK-GAK-AX shares the same 100-pin LQFP package and pin assignment with other 78K0/KF2 devices including UPD78F0544DAGK-GAK-AX, UPD78F0545DAGK-GAK-AX, and UPD78F0546DAGK-GAK-AX. Pin compatibility extends to power, reset, clock, and all port I/O assignments - allowing hardware reuse across variants differing only in flash size (48 KB to 64 KB) and peripheral enablement. This is explicitly confirmed in Renesas' ordering information table for the KF2 group.