Renesas UPD78F0532AGK-GAJ-AX

Overview

UPD78F0532AGK-GAJ-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 using an internal high-speed oscillator or external crystal (1–20 MHz), supports 5 V operation, and includes 8-channel 10-bit A/D converter with 12.5 µs conversion time. It is used in industrial motor control subsystems requiring deterministic real-time response and embedded sensor interface.

For engineers reviewing the UPD78F0532AGK-GAJ-AX datasheet, UPD78F0532AGK-GAJ-AX pinout, UPD78F0532AGK-GAJ-AX application, or UPD78F0532AGK-GAJ-AX equivalent, key selection criteria include Flash endurance (100,000 erase/write cycles), A/D sampling rate, TAU channel count, I/O drive strength (20 mA sink/source), and compatibility with Renesas' QB-MINI2 on-chip debug emulator.

Technical Context

The UPD78F0532AGK-GAJ-AX implements the 78K0 CPU core with 16-bit address space and 8-bit data path, supporting 139 instructions including bit manipulation and multiply/divide. Its peripheral set includes UART (2 channels), CSI (2 channels), I²C-compatible serial interface, watchdog timer, and voltage detector with reset generation.

It uses a 64-pin QFP package (14 mm × 14 mm, 0.8 mm pitch) with dedicated analog supply pins (AVDD/AVSS), separate I/O power domain (EVDD/EVSS), and configurable port latches supporting pull-up/pull-down and open-drain modes. The device supports both conventional-specification and expanded-specification Flash timing modes via FLMD0 pin configuration.

Key Specifications

Pinout & Package

UPD78F0532AGK-GAJ-AX is housed in a 64-pin plastic quad flat package (QFP) with 0.8 mm lead pitch and 14 mm × 14 mm body size. The package supports standard surface-mount reflow assembly and provides full I/O access across four sides.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100PLAFB#30, UPD78F0532AGK-GAJ-AX delivers higher PWM timing resolution and hardware math acceleration critical for motor control, while UPD78F0533AGK-GAJ-AX offers drop-in Flash capacity growth without altering layout or firmware architecture.

Availability

UPD78F0532AGK-GAJ-AX is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, PLC I/O modules, and home appliance control systems requiring stable component supply and long-term production continuity.

Supply support for UPD78F0532AGK-GAJ-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, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The 78K0/KE2 product line was designed for cost-sensitive, high-reliability embedded control applications requiring deterministic real-time performance, integrated analog peripherals, and robust Flash programming capabilities in 5 V environments.

FAQ

What is the maximum operating frequency of the UPD78F0532AGK-GAJ-AX?

The UPD78F0532AGK-GAJ-AX supports a maximum system clock frequency of 20 MHz. This can be achieved using either the internal high-speed oscillator (HOCO) or an external crystal/resonator connected to the X1/X2 pins. At 20 MHz, the instruction cycle time is 500 ns, enabling deterministic real-time response for time-critical control loops. The device maintains full functionality-including A/D conversion, UART communication, and TAU PWM generation-at this frequency.

Does the UPD78F0532AGK-GAJ-AX support in-system programming (ISP)?

Yes, the UPD78F0532AGK-GAJ-AX supports in-system programming via its on-chip Flash memory and built-in self-programming library. Using the single-wire debug (SWD) interface and Renesas' QB-MINI2 emulator, firmware updates can be performed without removing the device from the target board. The UPD78F0532AGK-GAJ-AX allows sector erase and byte-level write operations, with guaranteed endurance of 100,000 erase/write cycles and 20-year data retention under specified operating conditions.

What are the power supply requirements for the UPD78F0532AGK-GAJ-AX?

The UPD78F0532AGK-GAJ-AX requires two independent 5 V supply domains: VDD/EVDD (4.0 V to 5.5 V) for core and I/O logic, and AVDD (4.0 V to 5.5 V) for analog circuitry including the A/D converter. Separate ground returns (VSS, EVSS, AVSS) must be used to minimize noise coupling. The device draws approximately 12 mA at 20 MHz with all peripherals active, and less than 10 µA in HALT mode-making it suitable for both high-performance and low-power embedded designs.

How many A/D input channels does the UPD78F0532AGK-GAJ-AX have, and what is their resolution?

The UPD78F0532AGK-GAJ-AX integrates an 8-channel, 10-bit successive approximation register (SAR) A/D converter. All eight channels (AD0–AD7) are multiplexed onto port pins P10–P17 and support programmable sampling time, selectable reference voltage (AVREF or internal 2.5 V), and conversion completion interrupt. The minimum conversion time is 12.5 µs per channel, enabling up to 80 kSPS aggregate sampling rate when configured for sequential scanning.

Is the UPD78F0532AGK-GAJ-AX pin-compatible with other devices in the 78K0/KE2 family?

Yes, the UPD78F0532AGK-GAJ-AX shares the same 64-pin QFP package and pin assignment with other 78K0/KE2 devices including UPD78F0531AGK-GAJ-AX, UPD78F0533AGK-GAJ-AX, and UPD78F0534AGK-GAJ-AX. Pin compatibility extends to power, reset, clock, I/O, and peripheral signal locations. However, Flash size, RAM size, and peripheral enablement (e.g., number of UARTs or TAU channels) vary across the family-firmware must be validated for each specific variant even when hardware layout remains unchanged.