Renesas UPD78F0536AGA-HAB-AX

Overview

UPD78F0536AGA-HAB-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 internal high-speed oscillator or external crystal, supports 10-bit A/D conversion across 16 channels, and targets embedded control applications requiring real-time I/O handling and low-power operation.

For engineers reviewing the UPD78F0536AGA-HAB-AX datasheet, UPD78F0536AGA-HAB-AX pinout, UPD78F0536AGA-HAB-AX application, or UPD78F0536AGA-HAB-AX equivalent, key selection criteria include Flash endurance (100,000 write/erase cycles), operating voltage range (2.7–5.5 V), integrated voltage regulator (REGC pin), and compatibility with Renesas' RA78K0 assembler and CC78K0 C compiler toolchain.

Technical Context

The UPD78F0536AGA-HAB-AX implements the 78K0 CPU core with 16-bit addressing, supporting 131 instructions and a 1- to 4-cycle execution time per instruction. Its peripheral set includes a 16-bit multifunction timer (TM0–TM2), serial interface (UART/SIO), watchdog timer, and power-on reset circuit with built-in voltage detector.

It integrates a 10-bit successive-approximation A/D converter with sample-and-hold, programmable conversion start triggers (software, timer, external pin), and selectable reference voltage sources (AVREF or internal 2.5 V). The device uses a 64-pin TQFP package with dedicated analog supply pins (AVREF, AVSS) and separate digital power domains (VDD/EVDD, VSS/EVSS) for noise-sensitive mixed-signal operation.

Key Specifications

Pinout & Package

This device is housed in a 64-pin LQFP (7 mm × 7 mm, 0.5 mm pitch) package designated GA, with exposed pad for thermal dissipation and mechanical stability. Pin functions are defined per Renesas' 78K0/Kx2 Hardware User's Manual Rev.4.01.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F0536AGA-HAB-AX, R5F104PJAFB#30 offers superior low-power performance but requires redesign for missing REGC and reduced Flash; UPD78F0537AGA-HAB-AX provides seamless scalability within the same hardware layout and toolchain.

Availability

UPD78F0536AGA-HAB-AX is available at Aetrix Electronics and suitable for industrial motor control, smart sensor node development, and home appliance control requiring stable component supply and long-term production support.

Supply support for UPD78F0536AGA-HAB-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 IoT markets.

The 78K0/KE2 product line was designed for cost-sensitive, resource-constrained embedded control applications demanding reliable Flash-based program storage, integrated analog peripherals, and robust real-time I/O handling.

FAQ

What is the maximum operating frequency of the UPD78F0536AGA-HAB-AX?

The UPD78F0536AGA-HAB-AX supports a maximum operating frequency of 20 MHz. This can be achieved using either the internal high-speed oscillator (with optional frequency trimming) or an external crystal/resonator connected to the X1/X2 pins. At 20 MHz, the instruction cycle time is 200 ns for single-cycle instructions, enabling responsive real-time control in applications such as motor drives and sensor interfacing. The device maintains full functionality across its specified voltage range (2.7–5.5 V) at this speed.

Does the UPD78F0536AGA-HAB-AX include an integrated voltage regulator?

Yes, the UPD78F0536AGA-HAB-AX includes an on-chip voltage regulator controlled via the REGC pin. Connecting a 1 μF ceramic capacitor between REGC and VSS stabilizes the internal 2.5 V output used for analog circuitry, including the A/D converter reference and internal analog blocks. This eliminates the need for an external precision reference and simplifies PCB layout by reducing analog supply routing complexity.

How many A/D input channels does the UPD78F0536AGA-HAB-AX support?

The UPD78F0536AGA-HAB-AX supports 16 A/D input channels (AN0–AN15), all accessible through dedicated port pins (e.g., P10–P17, P120–P124). Each channel can be individually selected for conversion, and the 10-bit successive-approximation A/D converter achieves ≤1.2 μs conversion time with programmable trigger sources including software commands, timer overflows, and external interrupts - making it suitable for time-critical sampling tasks.

Is the UPD78F0536AGA-HAB-AX pin-compatible with other 78K0/KE2 microcontrollers?

Yes, the UPD78F0536AGA-HAB-AX shares the same 64-pin LQFP (GA) package and pin assignment with other 78K0/KE2 devices such as UPD78F0531AGA-HAB-AX through UPD78F0537AGA-HAB-AX. This allows hardware reuse across variants differing only in Flash size (32–96 KB), RAM capacity, and peripheral enablement - enabling scalable design families and simplified BOM management for manufacturers developing multiple product tiers.

What development tools are supported for the UPD78F0536AGA-HAB-AX?

The UPD78F0536AGA-HAB-AX is fully supported by Renesas' legacy 78K0 toolchain: RA78K0 assembler (Ver. 4.01), CC78K0 C compiler (Ver. 4.00), QB-MINI2 on-chip debugger, and PM+ IDE. It also works with the QB-78K0KX2 in-circuit emulator for advanced trace and timing analysis. Firmware updates can be performed in-system using the built-in self-programming library, eliminating dependency on external programmers during production or field service.