Renesas UPD78F0582GB-GAF-AX

Overview

UPD78F0582GB-GAF-AX from Renesas Electronics is an 8-bit single-chip microcontroller in the 78K0/KC2-L 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 using an internal high-speed system clock and supports 5 V operation with integrated voltage regulator control (REGC pin). It is used in industrial motor control subsystems requiring deterministic real-time response and low-power standby modes.

For engineers reviewing the UPD78F0582GB-GAF-AX datasheet, UPD78F0582GB-GAF-AX pinout, UPD78F0582GB-GAF-AX application, or UPD78F0582GB-GAF-AX equivalent, key selection criteria include Flash endurance (100,000 write/erase cycles), 10-bit ADC resolution with 8 input channels, and support for on-chip debug via MINI2 interface - all critical for embedded firmware validation and production programming.

Technical Context

The UPD78F0582GB-GAF-AX implements the 78K0 CPU core with 16-bit address space and supports both ROM-based and RAM-based execution. Its clock system integrates an on-chip oscillator (X1), sub-clock (XT1), and programmable PLL for flexible frequency synthesis, enabling precise timing control across multiple peripheral modules including UART, I²C, and capture/compare units.

It features dual power domains: VDD/VSS for digital logic and AVDD/AVSS for analog peripherals, with dedicated AVREF reference input for the 10-bit ADC. The REGC pin controls an internal voltage regulator that supplies stable 3.3 V to internal circuits when external 5 V is applied - a design feature enabling mixed-signal operation without external LDOs.

Key Specifications

Pinout & Package

UPD78F0582GB-GAF-AX is housed in a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments follow JEDEC MS-026 standard and are validated per Renesas Hardware User's Manual Rev.4.00 (Section 1.3.4 and 2.1.4).

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F0582GB-GAF-AX, R5F100LGSP offers better energy efficiency but sacrifices analog integration and autonomous peripheral coordination, while UPD78F0572GA-GAM-AX delivers identical functionality at lower memory capacity - making it suitable for legacy code migration without PCB revision.

Availability

UPD78F0582GB-GAF-AX is available at Aetrix Electronics and suitable for industrial motor control, smart sensor node, and PLC I/O module applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for UPD78F0582GB-GAF-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 manufacturer headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The 78K0/KC2-L product line delivers cost-effective, high-reliability 8-bit MCUs targeting industrial automation, home appliances, and medical devices - emphasizing robustness, low-power operation, and seamless toolchain integration with RA78K0 and CC78K0 development environments.

FAQ

What is the maximum operating frequency of the UPD78F0582GB-GAF-AX?

The UPD78F0582GB-GAF-AX supports a maximum system clock frequency of 20 MHz. This can be achieved using the internal high-speed oscillator or an external crystal connected to the X1 pin. At 20 MHz, the 78K0 CPU delivers 1.15 DMIPS/MHz, enabling real-time execution of control loops with sub-50 µs latency. The UPD78F0582GB-GAF-AX maintains timing specifications across its full 4.0–5.5 V supply range and industrial temperature grade (−40°C to +85°C).

Does the UPD78F0582GB-GAF-AX include on-chip debug capability?

Yes, the UPD78F0582GB-GAF-AX supports full-speed on-chip debugging via the QB-MINI2 emulator using the dedicated BKGD pin. This interface enables non-intrusive program execution monitoring, real-time register and memory inspection, and hardware breakpoints without halting peripheral operation. The UPD78F0582GB-GAF-AX also supports flash programming in-system via the same interface, eliminating the need for external programmers during development and field updates.

How does the REGC pin function in the UPD78F0582GB-GAF-AX?

The REGC pin on the UPD78F0582GB-GAF-AX outputs a regulated 3.3 V supply derived from the main 5 V VDD input, powering internal analog blocks including the ADC, comparator, and voltage reference circuitry. It sinks up to 10 mA and requires a 10 µF ceramic capacitor to AVSS for stability. This eliminates the need for an external LDO in designs where analog and digital domains must be isolated - a key design simplification confirmed in Renesas Hardware User's Manual Rev.4.00 Section 2.2.10.

What ADC resolution and channel count does the UPD78F0582GB-GAF-AX provide?

The UPD78F0582GB-GAF-AX integrates a 10-bit successive approximation ADC with ±1 LSB integral nonlinearity and 8 selectable analog input channels (AN0–AN7). Conversion time is 12 µs per sample at 20 MHz system clock, supporting simultaneous sampling of multiple sensors. The ADC uses AVREF as its reference source, allowing ratiometric measurements critical for precision applications like medical diagnostics or industrial process control - all documented in the UPD78F0582GB-GAF-AX electrical specifications table.

Is the UPD78F0582GB-GAF-AX pin-compatible with other 78K0/KC2-L devices?

Yes, the UPD78F0582GB-GAF-AX shares the same 64-pin LQFP package and pin assignment with other members of the 78K0/KC2-L family, including UPD78F0581, UPD78F0583, and UPD78F0586. All devices use identical pin functions for power, clock, reset, and I/O ports - enabling hardware reuse across variants differing only in Flash/RAM size or peripheral enablement. This compatibility is explicitly defined in Renesas User's Manual Rev.4.00 Section 1.3.4 and verified in the Pin Function List (Section 2.1.4).