Renesas UPD78F0534AGC-GAL-AX

Overview

UPD78F0534AGC-GAL-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 16-bit timer array unit (TAU) with PWM output capability. It operates at up to 20 MHz CPU clock frequency using an internal high-speed oscillator or external crystal (1–20 MHz), supports 10-bit ADC with 16 channels, and targets embedded control applications requiring real-time I/O handling and low-power operation.

For engineers reviewing the UPD78F0534AGC-GAL-AX datasheet, UPD78F0534AGC-GAL-AX pinout, UPD78F0534AGC-GAL-AX application, or UPD78F0534AGC-GAL-AX equivalent, key selection criteria include Flash endurance (100,000 write/erase cycles), operating voltage range (2.7–5.5 V), integrated watchdog timer (WDT), and support for on-chip debug via single-wire interface - all confirmed for this exact part number in Renesas' 78K0/Kx2 Hardware User's Manual Rev.4.01.

Technical Context

The UPD78F0534AGC-GAL-AX implements the 78K0 CPU core with 16-bit addressing, supporting 139 instructions and a 3-stage pipeline. It integrates a 16-bit TAU with four independent channels, each configurable as input capture, output compare, or PWM generator with dead-time insertion.

Its analog subsystem includes a 10-bit successive-approximation ADC with sample-and-hold, programmable conversion start triggers (software, timer, external pin), and selectable reference voltages (AVREF or VDD). The device uses a 64-pin LQFP package (10 mm × 10 mm) with 52 general-purpose I/O pins, including 16 dedicated ADC input channels and 8 dedicated PWM output pins - all verified in Section 2.1.4 (78K0/KE2) of the hardware manual.

Key Specifications

Pinout & Package

UPD78F0534AGC-GAL-AX is housed in a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad (GAL suffix denotes this variant). Pin functions are defined per Section 2.1.4 (78K0/KE2) of the Renesas 78K0/Kx2 Hardware User's Manual Rev.4.01.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F0534AGC-GAL-AX, R5F100LEAFB#30 offers modern low-power architecture and automotive-grade reliability but requires full software rework and board redesign, while UPD78F0537AGC-GAL-AX delivers seamless capacity scaling with zero hardware changes - making it the preferred migration option for existing 78K0-based designs.

Availability

UPD78F0534AGC-GAL-AX is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, home appliance control, and power supply monitoring requiring stable component supply across long-lifecycle production programs.

Supply support for UPD78F0534AGC-GAL-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, and power devices for industrial, automotive, and infrastructure markets.

The UPD78F0534AGC-GAL-AX belongs to the legacy 78K0/Kx2 product line, designed specifically for cost-sensitive, real-time embedded control applications where deterministic timing, peripheral integration, and long-term supply stability are critical - particularly in factory automation and white goods.

FAQ

What is the maximum operating frequency of the UPD78F0534AGC-GAL-AX?

The UPD78F0534AGC-GAL-AX supports a maximum CPU clock frequency of 20 MHz. This can be achieved using either the internal high-speed oscillator (with ±1% accuracy after calibration) or an external crystal/resonator in the 1–20 MHz range. The actual system clock is derived from the selected source via programmable prescalers and must remain within the 2.7–5.5 V supply voltage specification to guarantee timing compliance.

Does the UPD78F0534AGC-GAL-AX include an integrated ADC, and what are its key specifications?

Yes, the UPD78F0534AGC-GAL-AX includes a 10-bit successive-approximation ADC with 16 input channels. It supports programmable conversion start triggers (software, timer match, external pin), selectable reference voltage (AVREF or VDD), and conversion times as fast as 1.2 µs per sample. All 16 channels are mapped to dedicated pins - P10–P13, P20–P27, and P30–P33 - and are fully documented in Section 2.1.4 of the 78K0/Kx2 Hardware User's Manual.

What debug interface does the UPD78F0534AGC-GAL-AX support, and how is it implemented?

The UPD78F0534AGC-GAL-AX supports single-wire on-chip debug (OCDS) using the RES# pin. This eliminates the need for dedicated debug pins - the same pin used for hardware reset serves dual purpose. Debug capabilities include breakpoints, step execution, register read/write, and memory inspection. Full OCDS functionality requires Renesas' QB-MINI2 emulator or compatible tools, and is enabled via the FLMD0 pin configuration during power-on reset.

Is the UPD78F0534AGC-GAL-AX pin-compatible with other members of the 78K0/KE2 family?

Yes, the UPD78F0534AGC-GAL-AX is pin-compatible with other 64-pin LQFP variants in the 78K0/KE2 family, including UPD78F0531AGC-GAL-AX through UPD78F0537AGC-GAL-AX. All share identical pin assignments for power, reset, clocks, I/O ports, ADC inputs, and TAU functions. Differences lie only in Flash size (64 KB vs. 128 KB), RAM allocation, and minor peripheral enablement - verified in Section 1.5.4 and Table 2.1 of the hardware manual.

What is the Flash memory endurance and data retention specification for the UPD78F0534AGC-GAL-AX?

The UPD78F0534AGC-GAL-AX features 64 KB of on-chip Flash memory rated for 100,000 write/erase cycles and guaranteed 20-year data retention at 85°C. These values are specified in the 78K0/Kx2 Hardware User's Manual Rev.4.01 and apply to the UPD78F0534AGC-GAL-AX under standard operating conditions (2.7–5.5 V, –40°C to +85°C ambient). Endurance is measured per sector, and retention assumes proper erase/write sequencing per Renesas' Flash programming guidelines.