Renesas UPD78F0524AGB-GAG-AX

Overview

UPD78F0524AGB-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 16-bit timer/counter with PWM output capability. It operates at up to 20 MHz CPU frequency with 10-bit A/D converter (8 channels), serial interface (UART, CSI, I²C), and operates from 2.7 V to 5.5 V supply. It is used in industrial control panels requiring deterministic real-time response and low-power operation.

For engineers reviewing the UPD78F0524AGB-GAG-AX datasheet, UPD78F0524AGB-GAG-AX pinout, UPD78F0524AGB-GAG-AX application, or UPD78F0524AGB-GAG-AX equivalent, key selection criteria include flash endurance (100,000 write/erase cycles), A/D conversion time (1.2 μs typical), reset source options (power-on, watchdog, external), and support for in-system programming via on-chip self-programming library.

Technical Context

The UPD78F0524AGB-GAG-AX implements the 78K0 CPU core with 16-bit ALU and supports instruction cycle times down to 50 ns (20 MHz). Its peripheral set includes three 16-bit timers (T0–T2), one 8-bit timer (T3), watchdog timer, and serial interfaces supporting full-duplex UART, synchronous CSI, and I²C-compatible mode.

It integrates a 10-bit successive-approximation A/D converter with internal reference voltage (AVREF) input, sample-and-hold circuitry, and selectable trigger sources (software, timer, external pin). The device uses a single-supply CMOS process and supports two power-saving modes: HALT and STOP, with wake-up via interrupt or reset.

Key Specifications

Pinout & Package

The UPD78F0524AGB-GAG-AX is housed in a 80-pin LQFP package (12 mm × 12 mm, 0.5 mm pitch) with exposed thermal pad for enhanced heat dissipation in industrial ambient conditions.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F0524AGB-GAG-AX, R5F100LEAFB#30 enables lower-voltage operation and faster arithmetic but requires redesign for I²C protocol handling, while UPD78F0525AGB-GAG-AX provides identical peripherals and pinout with expanded memory-making it a drop-in upgrade path for firmware growth.

Availability

UPD78F0524AGB-GAG-AX is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, and PLC I/O modules requiring stable component supply across extended product lifecycles.

Supply support for UPD78F0524AGB-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 UPD78F0524AGB-GAG-AX belongs to the 78K0/KD2 product line, designed specifically for cost-sensitive, high-reliability embedded control applications demanding deterministic real-time response and long-term supply stability.

FAQ

What is the maximum operating frequency of the UPD78F0524AGB-GAG-AX?

The UPD78F0524AGB-GAG-AX supports a maximum CPU operating frequency of 20 MHz, achievable using either the internal high-speed oscillator or an external crystal/resonator in the 1–20 MHz range. At this speed, the shortest instruction cycle is 50 ns, enabling precise timing control for motor commutation and sensor sampling. The device maintains full functionality-including A/D conversion and serial communication-at rated voltage (2.7–5.5 V) and temperature (−40 to +85°C).

Does the UPD78F0524AGB-GAG-AX support in-system programming?

Yes, the UPD78F0524AGB-GAG-AX supports in-system programming via its on-chip self-programming library, which resides in ROM and allows firmware updates without removing the chip from the board. This library enables safe flash rewrites during runtime with interrupt masking and checksum verification. The UPD78F0524AGB-GAG-AX requires FLMD0 pin control and specific unlock sequences defined in Renesas Application Note U17516E to initiate programming mode.

What are the A/D converter specifications of the UPD78F0524AGB-GAG-AX?

The UPD78F0524AGB-GAG-AX integrates a 10-bit successive-approximation A/D converter with 8 input channels (AN0–AN7), selectable reference voltage (AVREF or internal 2.5 V), and conversion time of 1.2 μs (typical). It supports software, timer, or external pin triggers and includes built-in sample-and-hold circuitry. The A/D module achieves ±1 LSB integral nonlinearity and monotonicity across its full operating range, making it suitable for precision analog sensing in industrial environments.

How many I/O pins does the UPD78F0524AGB-GAG-AX provide, and what are their capabilities?

The UPD78F0524AGB-GAG-AX provides 64 general-purpose I/O pins distributed across Ports 0–7 and Port 12–14. Each pin supports individually configurable direction, pull-up resistor enable, and output latch control. Multiple pins double as peripheral functions including UART TX/RX, CSI clock/data, I²C SCL/SDA, PWM outputs, and external interrupt inputs. All I/Os are CMOS/TTL-compatible and tolerate 5 V inputs even when powered at 3.3 V.

What power-saving modes does the UPD78F0524AGB-GAG-AX support?

The UPD78F0524AGB-GAG-AX supports two low-power modes: HALT (CPU stopped, peripherals active) and STOP (entire system halted except reset and interrupt logic). In STOP mode, supply current drops to ≤1.5 μA while retaining RAM content, allowing rapid wake-up (<10 μs) via external interrupt or reset. Both modes maintain register states and support seamless resumption of operation, making the UPD78F0524AGB-GAG-AX ideal for battery-powered sensor nodes and energy-conscious industrial controllers.