Renesas UPD78F0527AGB-GAG-AX

Overview

UPD78F0527AGB-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 clock frequency using an internal high-speed oscillator or external crystal (1–20 MHz), and supports 5V operation with 64-pin LQFP package. It is used in industrial control panels requiring deterministic real-time response and integrated analog peripherals.

For engineers reviewing the UPD78F0527AGB-GAG-AX datasheet, UPD78F0527AGB-GAG-AX pinout, UPD78F0527AGB-GAG-AX application, or UPD78F0527AGB-GAG-AX equivalent, key selection criteria include Flash endurance (100,000 write/erase cycles), A/D conversion time (1.6 μs typical), I/O drive strength (20 mA sink/source per port), and support for on-chip debug via single-wire interface.

Technical Context

The UPD78F0527AGB-GAG-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 10-bit successive-approximation A/D converter with 16 input channels, a watchdog timer with independent clock source, and serial interfaces including UART, CSI, and I²C-compatible serial array.

Its memory subsystem includes 64 KB Flash (with block erase and byte programming), 4 KB RAM, and 256-byte data flash for parameter storage. The device uses a dual-voltage design: EVDD/EVSS for analog circuitry and VDD/VSS for digital logic, enabling precise noise isolation for mixed-signal operation.

Key Specifications

Pinout & Package

UPD78F0527AGB-GAG-AX is housed in a 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined per Renesas Hardware User's Manual Rev.4.01, Section 2.1.3 (78K0/KD2).

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F0527AGB-GAG-AX, R5F100PLGSP#30 offers broader voltage range and embedded LIN but lacks 20 mA I/O drive and 5 V tolerance; UPD78F0537AGB-GAG-AX provides direct upward migration path with full pin and code compatibility while doubling Flash and RAM resources.

Availability

UPD78F0527AGB-GAG-AX is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, PLC I/O modules, and appliance control boards requiring stable component supply and long-term production continuity.

Supply support for UPD78F0527AGB-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 management ICs for industrial, automotive, and infrastructure markets.

The UPD78F0527AGB-GAG-AX belongs to the 78K0/KD2 product line, designed specifically for cost-sensitive industrial control applications demanding robust 5 V operation, integrated analog peripherals, and deterministic real-time performance without external support components.

FAQ

What is the maximum operating frequency of the UPD78F0527AGB-GAG-AX?

The UPD78F0527AGB-GAG-AX supports a maximum CPU clock frequency of 20 MHz. This is achieved using either the internal high-speed oscillator or an external crystal/resonator in the 1–20 MHz range. At 20 MHz, the instruction cycle time is 50 ns for most instructions, enabling tight real-time control loops in motor and power applications. The device maintains timing specifications across its full −40°C to +85°C operating temperature range.

Does the UPD78F0527AGB-GAG-AX include on-chip debug capability?

Yes, the UPD78F0527AGB-GAG-AX features a single-wire on-chip debug interface compliant with Renesas' standard debug protocol. This allows full breakpoint, watchpoint, and register inspection capabilities without requiring a dedicated JTAG connector. Debug access is enabled via the RESB pin and one designated I/O pin, minimizing PCB routing overhead. The UPD78F0527AGB-GAG-AX debug interface is supported by Renesas' E2 emulator and QB-MINI2 tools.

What is the Flash memory endurance specification for the UPD78F0527AGB-GAG-AX?

The UPD78F0527AGB-GAG-AX guarantees a minimum of 100,000 write/erase cycles for its 64 KB on-chip Flash memory. This endurance rating applies under standard operating conditions (VDD = 5.0 V ±10%, TA = 25°C) and is validated per JEDEC JESD22-A117. The device also provides 10-year data retention at 85°C, making it suitable for firmware updates in field-deployed industrial equipment where long service life is required.

Can the UPD78F0527AGB-GAG-AX operate from a single 5 V supply?

Yes, the UPD78F0527AGB-GAG-AX is designed for single 5 V operation with separate EVDD and VDD pins internally connected through an on-chip regulator. While the datasheet specifies separate analog (EVDD) and digital (VDD) supplies for optimal noise immunity, the device functions correctly with a single 5 V rail applied to both pins. For highest ADC accuracy, however, Renesas recommends decoupling EVDD and VDD with individual 100 nF capacitors and routing analog/digital grounds separately.

How many A/D input channels does the UPD78F0527AGB-GAG-AX support?

The UPD78F0527AGB-GAG-AX integrates a 10-bit successive-approximation A/D converter with 16 selectable input channels. These channels map to dedicated pins on Port 1 (P10–P17), Port 2 (P20–P23), and Port 4 (P40–P43), allowing simultaneous sampling of multiple analog sensors. Conversion time is guaranteed at 1.6 μs (typical) across the full operating voltage and temperature range, supporting high-speed control loops in motor and power applications.