Renesas UPD78F0535AGB-GAH-AX

Overview

UPD78F0535AGB-GAH-AX from Renesas Electronics is an 8-bit single-chip microcontroller in the 78K0/KE2 family, featuring 64 KB on-chip Flash memory, 4 KB RAM, and a maximum operating frequency of 20 MHz. It integrates a 10-bit A/D converter with 16 channels, UART, I²C, and timer peripherals, and targets embedded control applications in industrial equipment and consumer appliances.

For engineers reviewing the UPD78F0535AGB-GAH-AX datasheet, UPD78F0535AGB-GAH-AX pinout, UPD78F0535AGB-GAH-AX application, or UPD78F0535AGB-GAH-AX equivalent, key selection criteria include Flash endurance (100,000 erase/write cycles), A/D conversion time (1.1 μs typical), supply voltage range (2.7–5.5 V), and QFP-100 package compatibility for space-constrained industrial control designs.

Technical Context

The UPD78F0535AGB-GAH-AX implements the 78K0 CPU core with 16-bit address space and supports both conventional- and expanded-specification modes. Its peripheral set includes three 16-bit timers, one watchdog timer, and a serial interface supporting UART and I²C protocols with programmable baud rates up to 1 Mbps.

It features a 10-bit successive-approximation A/D converter with sample-and-hold circuitry, internal reference voltage (AVREF), and selectable conversion triggers (software, timer, or external event). The device operates across industrial temperature range (−40°C to +85°C) and supports low-power modes including HALT and STOP.

Key Specifications

Pinout & Package

The UPD78F0535AGB-GAH-AX is housed in a 100-pin QFP package (package code GAB) with standard 0.65 mm lead pitch and thermal pad for enhanced heat dissipation in continuous operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F0535AGB-GAH-AX, R5F100PLGFB#30 offers higher clock speed and better energy efficiency but demands layout revision, while UPD78F0534AGB-GAH-AX provides true pin-compatible substitution at lower memory capacity-ideal for legacy design reuse without hardware change.

Availability

UPD78F0535AGB-GAH-AX is available at Aetrix Electronics and suitable for industrial motor control, home appliance MCU, factory automation I/O modules, and energy metering interface applications requiring stable component supply and long-term production continuity.

Supply support for UPD78F0535AGB-GAH-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 Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The UPD78F0535AGB-GAH-AX belongs to the 78K0/Kx2 product line, designed specifically for cost-effective, reliable embedded control in industrial equipment and consumer electronics where deterministic real-time response and Flash endurance are critical.

FAQ

What is the maximum operating frequency of the UPD78F0535AGB-GAH-AX?

The UPD78F0535AGB-GAH-AX operates at a maximum system clock frequency of 20 MHz using its on-chip oscillator or external crystal (X1) up to 20 MHz. This corresponds to a 1.1 μs instruction cycle time for most 78K0 core instructions, enabling deterministic real-time control in time-critical applications such as motor commutation and sensor sampling.

Does the UPD78F0535AGB-GAH-AX support in-system programming?

Yes, the UPD78F0535AGB-GAH-AX supports in-system programming via its on-chip Flash memory and integrated self-programming library. Using the provided Renesas library (U17516E), firmware updates can be performed through UART or other serial interfaces without removing the device from the board - a capability confirmed in the 78K0/Kx2 Flash Memory Self Programming User's Manual.

What are the power supply requirements for the UPD78F0535AGB-GAH-AX?

The UPD78F0535AGB-GAH-AX requires two independent power domains: VDD/EVDD (2.7–5.5 V) for digital and analog/peripheral circuits, and corresponding VSS/EVSS grounds. Separating these supplies minimizes noise coupling - essential for achieving specified A/D accuracy and stable UART/I²C communication under varying load conditions.

Is the UPD78F0535AGB-GAH-AX pin-compatible with other 78K0/KE2 devices?

Yes, the UPD78F0535AGB-GAH-AX shares the same 100-pin QFP package and pin assignment with other 78K0/KE2 family members including UPD78F0531AGB-GAH-AX through UPD78F0537AGB-GAH-AX. Pin compatibility is explicitly defined in Section 2.1.4 of the 78K0/Kx2 Hardware User's Manual (Rev. 4.01), enabling hardware reuse across variants differing only in Flash size or peripheral enablement.

What development tools are supported for the UPD78F0535AGB-GAH-AX?

The UPD78F0535AGB-GAH-AX is supported by Renesas' QB-MINI2 on-chip debug emulator, RA78K0 assembler, CC78K0 C compiler, and PM+ IDE. Debugging uses single-wire interface (SWD), and flash programming is enabled via PG-FP5 programmer or on-board UART bootloader - all documented in U17341E, U18371E, and U18865E application notes.