Renesas UPD78F0572MC-CAB-AX

Overview

UPD78F0572MC-CAB-AX from Renesas Electronics is an 8-bit single-chip microcontroller in the 78K0/KB2-L family, featuring 64 KB on-chip Flash memory, 4 KB RAM, and a 20 MHz max CPU clock. It integrates UART, I²C, 16-bit timer/counters, ADC (8-channel, 10-bit), and operates from 2.7–5.5 V. It targets industrial control panels requiring deterministic real-time response and low-power operation.

For engineers reviewing the UPD78F0572MC-CAB-AX datasheet, UPD78F0572MC-CAB-AX pinout, UPD78F0572MC-CAB-AX application, or UPD78F0572MC-CAB-AX equivalent, key selection criteria include Flash endurance (100k write/erase cycles), ADC sampling rate (up to 1.25 MSPS), interrupt latency (≤2 µs), and support for low-power stop mode with RTC wake-up capability.

Technical Context

The UPD78F0572MC-CAB-AX implements the 78K0S CPU core with 16-bit address space and 8-bit data path, supporting 131 instructions including bit manipulation and conditional skip. It uses Renesas' SuperFlash® technology for program memory, enabling single-cycle instruction execution at 20 MHz with no wait states.

Its peripheral set includes three 16-bit timer/counters with capture/compare, one watchdog timer, and a programmable serial interface supporting UART and I²C modes. The on-chip voltage regulator supplies internal logic at 3.3 V from a 5 V supply, and the ADC features built-in sample-and-hold with selectable reference (AVREF or VDD).

Key Specifications

Pinout & Package

UPD78F0572MC-CAB-AX is housed in a 64-pin LQFP package (10 × 10 mm, 0.5 mm pitch) with exposed thermal pad (EPAD) connected to VSS for enhanced thermal dissipation in continuous industrial operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100LGSP#V0 and STM8L152R8T6, the UPD78F0572MC-CAB-AX delivers superior real-time determinism (2 µs interrupt latency vs. ≥3.5 µs), retains factory ADC calibration in Flash, and supports legacy 78K0 toolchain compatibility-critical for long-lifecycle industrial maintenance.

Availability

UPD78F0572MC-CAB-AX is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, and PLC I/O modules requiring stable component supply, extended temperature operation (−40°C to +85°C), and long-term production continuity.

Supply support for UPD78F0572MC-CAB-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 global semiconductor leader headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The 78K0/KB2-L product line was designed for cost-sensitive, high-reliability industrial control applications requiring deterministic real-time performance, low-power operation, and long-term supply stability-exemplified by the UPD78F0572MC-CAB-AX's SuperFlash® endurance and thermal robustness.

FAQ

What is the maximum operating frequency of the UPD78F0572MC-CAB-AX?

The UPD78F0572MC-CAB-AX supports a maximum CPU clock frequency of 20 MHz, achievable using either the on-chip high-speed oscillator (HOCO) or an external crystal (1–20 MHz) connected to XT1/XT2. At 20 MHz, the 78K0S core executes most instructions in one cycle, delivering 20 MIPS throughput with zero wait states for Flash access.

Does the UPD78F0572MC-CAB-AX support in-system programming (ISP)?

Yes, the UPD78F0572MC-CAB-AX supports full in-system programming via its on-chip debug interface. Renesas provides the Self Programming Library Type 01, which enables firmware updates without removing the device from the board. This library handles erase/write sequencing, checksum verification, and protection against accidental overwrite-critical for field-upgradable industrial equipment.

What ADC resolution and sampling rate does the UPD78F0572MC-CAB-AX provide?

The UPD78F0572MC-CAB-AX integrates an 8-channel, 10-bit successive-approximation ADC capable of up to 1.25 million samples per second (MSPS). Sampling is hardware-triggered by timers or software-initiated, with built-in sample-and-hold ensuring accuracy even with fast-changing analog inputs like motor phase currents.

Is the UPD78F0572MC-CAB-AX qualified for industrial temperature range?

Yes, the UPD78F0572MC-CAB-AX is rated for operation from −40°C to +85°C ambient temperature and is classified as a "Standard" quality grade device per Renesas documentation. Its 64-pin LQFP package includes an exposed thermal pad to maintain junction temperature within safe limits during continuous operation in enclosed industrial enclosures.

How does the UPD78F0572MC-CAB-AX handle low-power operation?

The UPD78F0572MC-CAB-AX offers multiple low-power modes, including stop mode with RTC active and consuming only 0.8 µA at 3.3 V. In this mode, the CPU and most peripherals halt while the RTC continues counting and can generate wake-up interrupts. Wake-up sources include external pins, timer matches, and serial reception events-enabling responsive yet energy-efficient sensor node behavior.