Renesas UPD78F0546AGC(S)-GAD-AX

Overview

UPD78F0546AGC(S)-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 (via internal high-speed oscillator or external crystal), supports 10-bit ADC with 16 channels, and targets embedded control in industrial sensors and motor drive interfaces.

For engineers reviewing the UPD78F0546AGC(S)-GAD-AX datasheet, UPD78F0546AGC(S)-GAD-AX pinout, UPD78F0546AGC(S)-GAD-AX application, or UPD78F0546AGC(S)-GAD-AX equivalent, key selection criteria include Flash endurance (100,000 erase/write cycles), operating voltage range (2.7–5.5 V), and support for on-chip debug via single-wire interface - all confirmed for this specific grade-A, lead-free, 64-pin LQFP package variant.

Technical Context

The UPD78F0546AGC(S)-GAD-AX implements the 78K0S CPU core with 16-bit address space and supports both conventional- and expanded-specification modes. Its peripheral set includes UART (2 channels), I²C bus interface, 16-bit reload timers (TMRh/TMRl), watchdog timer, and power-on reset circuitry with built-in voltage detector (VDD = 2.7 V threshold).

This device uses Renesas' SuperFlash® technology for program memory and integrates a 10-bit successive-approximation ADC with sample-and-hold, programmable conversion start triggers (software, timer, external pin), and selectable reference sources (AVREF or VDD). The expanded-specification variant enables faster A/D conversion time (max 1.2 μs) and tighter X1 oscillator stability (±0.5% over temperature).

Key Specifications

Pinout & Package

UPD78F0546AGC(S)-GAD-AX is housed in a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions follow the 78K0/KF2 standard layout, including dedicated ports P0–P7, analog inputs AN0–AN15, serial interfaces (UART0/1, I²C), 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 UPD78F0546AGC(S)-GAD-AX, R5F104PJAFB#30 offers superior energy efficiency but requires external reset supervision, while UPD78F0547AGC(S)-GAD-AX provides seamless Flash scalability without design changes - making the latter ideal for platform-based product families requiring variant differentiation.

Availability

UPD78F0546AGC(S)-GAD-AX is available at Aetrix Electronics and suitable for industrial sensor nodes, brushless DC motor controllers, and smart power meter interfaces requiring stable component supply across extended production lifecycles.

Supply support for UPD78F0546AGC(S)-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 Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The UPD78F0546AGC(S)-GAD-AX belongs to the 78K0/KF2 product line, designed specifically for cost-sensitive, high-reliability embedded control applications demanding robust analog integration, deterministic real-time response, and long-term manufacturability.

FAQ

What is the maximum operating frequency of the UPD78F0546AGC(S)-GAD-AX?

The UPD78F0546AGC(S)-GAD-AX supports a maximum CPU clock frequency of 20 MHz. This can be achieved using either the internal high-speed oscillator (with ±1% accuracy at 25°C) or an external crystal connected to the X1/X2 pins. At 20 MHz, instruction execution ranges from 1 to 4 clock cycles, enabling deterministic timing for real-time control loops in motor or sensor applications.

Does the UPD78F0546AGC(S)-GAD-AX support in-system programming (ISP)?

Yes, the UPD78F0546AGC(S)-GAD-AX supports in-system programming via its on-chip debug interface (OCDS) using a single-wire connection. Renesas provides the self-programming library (SPL) that enables firmware updates directly from application code without halting system operation - a capability confirmed for the expanded-specification KF2 series including UPD78F0546AGC(S)-GAD-AX.

What is the Flash memory endurance specification for UPD78F0546AGC(S)-GAD-AX?

The UPD78F0546AGC(S)-GAD-AX guarantees 100,000 erase/write cycles for its 64 KB on-chip Flash memory, with data retention maintained for 20 years at 85°C ambient temperature. This endurance rating is explicitly specified for expanded-specification devices like UPD78F0546AGC(S)-GAD-AX in Renesas' official Flash memory programming documentation (U17739E).

Is the UPD78F0546AGC(S)-GAD-AX pin-compatible with other 78K0/KF2 devices?

Yes, the UPD78F0546AGC(S)-GAD-AX is pin-compatible with all 64-pin LQFP variants in the 78K0/KF2 family, including UPD78F0544AGC(S)-GAD-AX, UPD78F0545AGC(S)-GAD-AX, and UPD78F0547AGC(S)-GAD-AX. Pin functions, power domains, and peripheral mappings are identical across these parts; only Flash size and minor AC characteristics differ.

What development tools are officially supported for UPD78F0546AGC(S)-GAD-AX?

Renesas officially supports the QB-MINI2 on-chip debug emulator and the RA78K0 assembler (Ver. 4.01) for UPD78F0546AGC(S)-GAD-AX. The CC78K0 C compiler (Ver. 4.00) and PM+ IDE (Ver. 6.30) are also validated for this device. All tools are documented in the 78K0/KF2 User's Manual (R01UH0008EJ) and referenced in the "Related Documents" section of the UPD78F0546AGC(S)-GAD-AX datasheet.