Renesas UPD78F0526AGB-GAG-AX

Overview

UPD78F0526AGB-GAG-AX from Renesas Electronics is an 8-bit single-chip microcontroller in the 78K0/KD2 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 in industrial equipment and home appliances.

For engineers reviewing the UPD78F0526AGB-GAG-AX datasheet, UPD78F0526AGB-GAG-AX pinout, UPD78F0526AGB-GAG-AX application, or UPD78F0526AGB-GAG-AX equivalent, key selection criteria include Flash endurance (100,000 write/erase cycles), A/D conversion time (1.1 μs typical), supply voltage range (2.7–5.5 V), and compliance with industrial-grade quality standards.

Technical Context

The UPD78F0526AGB-GAG-AX implements the 78K0 CPU core with 16-bit address space and supports both conventional- and expanded-specification modes. Its on-chip Flash uses SuperFlash® technology licensed from SST, enabling 100,000 erase/write cycles and 100-year data retention at 25°C.

It features dual clock sources: an external crystal oscillator (X1) supporting 1–20 MHz operation and an internal high-speed RC oscillator (HOCO) at 8 MHz. The device includes a 16-bit multifunction timer array unit (TAU) with capture/compare and PWM output capability, and a watchdog timer with independent clock source.

Key Specifications

Pinout & Package

UPD78F0526AGB-GAG-AX is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per port group (P0–P7, P12–P14) and dedicated peripheral signals including RESET, REGC, FLMD0, AVREF, and EVDD/EVSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F0526AGB-GAG-AX, R5F102AAASP#V0 reduces active and standby current significantly but sacrifices Flash endurance and A/D speed; UPD78F0536AGB-GAG-AX maintains full functional and pinout compatibility while extending memory capacity - making it the only drop-in replacement option.

Availability

UPD78F0526AGB-GAG-AX is available at Aetrix Electronics and suitable for industrial motor control, home appliance UI panels, factory automation sensor nodes, and power supply monitoring units requiring stable component supply over extended production lifecycles.

Supply support for UPD78F0526AGB-GAG-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 78K0/KD2 product line delivers cost-optimized, industrial-grade 8-bit MCUs with integrated Flash, A/D, and communication peripherals - designed specifically for resource-constrained embedded control in harsh environments.

FAQ

What is the maximum operating frequency of the UPD78F0526AGB-GAG-AX?

The UPD78F0526AGB-GAG-AX supports a maximum operating frequency of 20 MHz when using an external crystal oscillator connected to the X1 pins. With its internal high-speed oscillator (HOCO), it operates at a fixed 8 MHz, enabling clock source redundancy and reduced BOM cost in less timing-critical applications. The UPD78F0526AGB-GAG-AX datasheet specifies AC characteristics including instruction cycle time, peripheral clock limits, and setup/hold times consistent with this 20 MHz rating.

Does the UPD78F0526AGB-GAG-AX include on-chip debug support?

Yes, the UPD78F0526AGB-GAG-AX includes on-chip debugging capability via the single-wire debug interface compatible with Renesas' QB-MINI2 emulator and ID78K0-QB debugger. This allows real-time register inspection, breakpoint setting, and flash programming without requiring external debug headers. The UPD78F0526AGB-GAG-AX implements the standard 78K0 debug architecture, supporting full visibility into CPU state and memory during development.

What is the Flash memory endurance specification for the UPD78F0526AGB-GAG-AX?

The UPD78F0526AGB-GAG-AX guarantees 100,000 write/erase cycles for its 64 KB on-chip Flash memory, with data retention rated at 100 years at 25°C ambient temperature. This endurance level is validated under Renesas' expanded-specification testing regime and applies across the full industrial temperature range (−40°C to +85°C). The UPD78F0526AGB-GAG-AX uses licensed SuperFlash® technology to achieve this reliability without requiring special erase algorithms.

Can the UPD78F0526AGB-GAG-AX operate from a 3.3 V supply?

Yes, the UPD78F0526AGB-GAG-AX operates reliably across a supply voltage range of 2.7 V to 5.5 V, fully covering standard 3.3 V nominal systems. At 3.3 V, it maintains full functionality including 20 MHz operation, A/D conversion accuracy, and I/O drive strength. The UPD78F0526AGB-GAG-AX electrical specifications confirm stable performance at 3.3 V with all peripherals enabled and within industrial temperature limits.

How many A/D input channels does the UPD78F0526AGB-GAG-AX support?

The UPD78F0526AGB-GAG-AX supports 16 analog input channels for its 10-bit successive-approximation A/D converter. These channels are mapped across Port 1 (AN0–AN7) and Port 2 (AN8–AN15), with flexible routing to internal sample-and-hold circuitry. The UPD78F0526AGB-GAG-AX allows simultaneous hardware triggering from multiple sources including timers and UART events, ensuring deterministic sampling timing without CPU intervention.