Renesas UPD78F0533AGC-GAL-AX

Overview

UPD78F0533AGC-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 with PWM output capability. It operates at up to 20 MHz using an external crystal (1–20 MHz) or internal high-speed oscillator (16 MHz), supports 10-bit ADC with 16 channels, and targets embedded control in industrial sensors and motor drive interfaces.

For engineers reviewing the UPD78F0533AGC-GAL-AX datasheet, UPD78F0533AGC-GAL-AX pinout, UPD78F0533AGC-GAL-AX application, or UPD78F0533AGC-GAL-AX equivalent, key selection criteria include Flash endurance (100,000 erase/write cycles), ADC sampling time (1.2 μs min), I/O drive strength (20 mA sink/source per port), and support for on-chip debug via single-wire interface.

Technical Context

The UPD78F0533AGC-GAL-AX implements the 78K0 CPU core with 16-bit ALU, 16-level hardware stack, and instruction set compatible with earlier 78K0 devices. It integrates a 16-bit timer array unit (TAU) with four independent channels supporting input capture, output compare, PWM generation, and interval timing functions.

Peripheral integration includes a 10-bit successive-approximation ADC with programmable conversion start triggers (software, timer, external pin), serial interface (UART, CSI, I²C), and power management features such as HALT and STOP modes with wake-up via interrupt or reset. The device uses a 100-pin LQFP package with dedicated AVREF/AVSS pins for analog accuracy.

Key Specifications

Pinout & Package

UPD78F0533AGC-GAL-AX is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin assignments follow the 78K0/KE2 standard layout, including dedicated analog supply pins (AVREF, AVSS), multiple I/O ports (P0–P7, P12–P14), and system control signals (RESET, FLMD0, REGC).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100PLAFB#30, UPD78F0533AGC-GAL-AX delivers higher deterministic timing for motor control via TAU hardware PWM and faster ADC throughput; compared with UPD78F0537AGC-GAL-AX, it offers identical real-time performance at lower cost and reduced Flash overhead for firmware under 64 KB.

Availability

UPD78F0533AGC-GAL-AX is available at Aetrix Electronics and suitable for industrial sensor nodes, brushless DC motor controllers, and smart power metering applications requiring stable component supply across multi-year production cycles.

Supply support for UPD78F0533AGC-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 global semiconductor leader headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The 78K0/KE2 product line was designed specifically for cost-sensitive, high-reliability embedded control applications requiring deterministic real-time response, integrated analog peripherals, and long-term supply stability in factory automation and building management systems.

FAQ

What is the maximum operating frequency of the UPD78F0533AGC-GAL-AX?

The UPD78F0533AGC-GAL-AX supports a maximum system clock frequency of 20 MHz when using an external crystal oscillator in the 1–20 MHz range. With the internal high-speed oscillator enabled, it operates at a fixed 16 MHz. Both clock sources meet the AC timing requirements specified in the 78K0/Kx2 Hardware User's Manual Rev.4.01, ensuring reliable instruction execution and peripheral synchronization at rated speed.

Does the UPD78F0533AGC-GAL-AX support in-system programming?

Yes, the UPD78F0533AGC-GAL-AX supports in-system programming via its on-chip Flash memory and included self-programming library. This allows firmware updates to be performed in the target application without removing the device or using an external programmer. The UPD78F0533AGC-GAL-AX library supports erase/write operations with error checking and can be triggered by software commands during normal operation or HALT mode.

What analog features does the UPD78F0533AGC-GAL-AX include?

The UPD78F0533AGC-GAL-AX integrates a 10-bit successive-approximation ADC with 16 input channels, programmable sampling time down to 1.2 μs, and flexible trigger sources including software, timer overflow, and external pins. It also provides dedicated AVREF and AVSS pins for analog reference stability, and supports differential input mode on selected channels to improve noise immunity in industrial signal conditioning applications.

Is the UPD78F0533AGC-GAL-AX pin-compatible with other 78K0/KE2 devices?

Yes, the UPD78F0533AGC-GAL-AX shares the same 100-pin LQFP package and pin assignment with other 78K0/KE2 microcontrollers including UPD78F0531AGC-GAL-AX through UPD78F0537AGC-GAL-AX. This enables direct PCB footprint reuse across the family, allowing design scalability from 32 KB to 96 KB Flash while maintaining identical I/O mapping, peripheral pinouts, and power supply connections.

What debug interface does the UPD78F0533AGC-GAL-AX provide?

The UPD78F0533AGC-GAL-AX features a single-wire debug (SWD) interface compliant with the 78K0 on-chip debug specification. This interface uses only the RES# pin for bidirectional communication, eliminating the need for dedicated debug pins and preserving all GPIO for application use. Full debug capabilities-including breakpoints, register inspection, and real-time memory access-are supported using Renesas' QB-MINI2 emulator or compatible third-party tools.