Renesas UPD78F0545AGC(R)-GAD-AX

Overview

UPD78F0545AGC(R)-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 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 interface modules requiring deterministic real-time response.

For engineers reviewing the UPD78F0545AGC(R)-GAD-AX datasheet, UPD78F0545AGC(R)-GAD-AX pinout, UPD78F0545AGC(R)-GAD-AX application, or UPD78F0545AGC(R)-GAD-AX equivalent, key selection criteria include Flash endurance (100,000 erase/write cycles), A/D conversion time (≤1.2 μs per channel), interrupt latency (≤3.5 μs), and support for in-application programming via on-chip self-programming library.

Technical Context

The UPD78F0545AGC(R)-GAD-AX implements the 78K0 CPU core with Harvard architecture, supporting 131 instructions and 8-level priority interrupt nesting. It integrates a programmable watchdog timer, low-voltage detection circuit (LVD) with 3 selectable thresholds (4.2 V / 3.8 V / 2.7 V), and power-down modes including HALT and STOP with wake-up via external interrupt or RTC alarm.

Its peripheral set includes two 16-bit timer arrays (TAU) with complementary PWM outputs, a 10-bit A/D converter with sample-and-hold and built-in reference voltage (2.5 V), and dual serial interfaces: one UART with LIN support and one CSI/I²C-compatible channel. All peripherals are clocked from a dedicated internal peripheral clock (f_periph) derived from the main system clock.

Key Specifications

Pinout & Package

UPD78F0545AGC(R)-GAD-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' 78K0/KF2 User's Manual Rev.4.01, Section 2.1.5 and Figure 2.12.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F0545AGC(R)-GAD-AX, R5F104PJAFB#30 offers modern low-power architecture and SWD debug but requires firmware porting, while UPD78F0537AGC(R)-GAD-AX provides true pin- and code-compatible substitution at lower memory capacity-ideal for design reuse with minor feature trimming.

Availability

UPD78F0545AGC(R)-GAD-AX is available at Aetrix Electronics and suitable for industrial control panels, smart sensor nodes, and motor drive interface modules requiring stable component supply across extended product lifecycles.

Supply support for UPD78F0545AGC(R)-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 global semiconductor leader headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The UPD78F0545AGC(R)-GAD-AX belongs to the 78K0/KF2 product line, designed specifically for cost-sensitive, real-time embedded applications demanding high reliability, low power, and mature toolchain support in industrial automation and sensor systems.

FAQ

What is the maximum operating frequency of the UPD78F0545AGC(R)-GAD-AX?

The UPD78F0545AGC(R)-GAD-AX supports a maximum CPU clock frequency of 20 MHz when using the high-speed on-chip oscillator or external crystal (X1) up to 20 MHz. Its instruction cycle time is 50 ns at this speed, enabling deterministic execution for time-critical control tasks. The device also supports lower-frequency modes (e.g., 1 MHz or 32.768 kHz) for low-power operation, configurable via the system clock control register (CKC).

Does the UPD78F0545AGC(R)-GAD-AX support in-system programming (ISP)?

Yes, the UPD78F0545AGC(R)-GAD-AX supports in-application programming (IAP) via its on-chip self-programming library (SPL). This allows firmware updates without removing the device from the PCB or using an external programmer. The SPL supports erasing and writing any Flash memory sector while the application runs, provided proper interrupt masking and timing constraints are observed per Renesas Application Note U17516E.

What are the power supply requirements for the UPD78F0545AGC(R)-GAD-AX analog section?

The UPD78F0545AGC(R)-GAD-AX requires separate analog and digital supplies: EVDD and EVSS must be connected to clean, filtered 2.7–5.5 V and ground, respectively, decoupled with ≥1 μF ceramic capacitors near the pins. The internal 2.5 V A/D reference is derived from EVDD and remains stable across the full supply range, eliminating need for external reference components in most applications.

How many interrupt sources does the UPD78F0545AGC(R)-GAD-AX support?

The UPD78F0545AGC(R)-GAD-AX supports 92 interrupt sources organized into 8 priority levels, including peripheral interrupts (UART, TAU, ADC, etc.), external pin interrupts (INT0–INT7), and system exceptions (reset, NMI). Each interrupt vector is individually configurable for priority and enable state, allowing fine-grained real-time response tuning for multi-tasking embedded applications.

Is the UPD78F0545AGC(R)-GAD-AX pin-compatible with other 78K0/KF2 devices?

Yes, the UPD78F0545AGC(R)-GAD-AX shares the same 64-pin LQFP package and pin assignment with other 78K0/KF2 family members including UPD78F0544AGC(R)-GAD-AX, UPD78F0546AGC(R)-GAD-AX, and UPD78F0547AGC(R)-GAD-AX. Pin compatibility extends to power, reset, clock, and all I/O ports, enabling hardware reuse across variants differing only in Flash size, RAM, or peripheral enablement.