Renesas UPD78F1142AGB-GAH-M1-AX

Overview

UPD78F1142AGB-GAH-M1-AX from Renesas Electronics is a 16-bit single-chip microcontroller in the 78K0R/KE3 family, featuring 128 KB Flash memory, 8 KB RAM, and integrated peripherals including 10-bit ADC (16 channels), UART, I²C, and timer modules. It operates at up to 20 MHz with supply voltage range 2.7–5.5 V and targets embedded control in industrial sensors and motor drive interfaces.

For engineers reviewing the UPD78F1142AGB-GAH-M1-AX datasheet, UPD78F1142AGB-GAH-M1-AX pinout, UPD78F1142AGB-GAH-M1-AX application, or UPD78F1142AGB-GAH-M1-AX equivalent, key selection criteria include Flash endurance (100k write/erase cycles), operating temperature range (−40°C to +85°C), and support for on-chip debug via single-wire interface.

Technical Context

The UPD78F1142AGB-GAH-M1-AX implements the 78K0R CPU core with Harvard architecture, supporting 16-bit data paths and 24-bit addressing. It integrates a programmable low-voltage detector (LVD) with 3 selectable thresholds (2.7 V, 3.3 V, 4.2 V) and a real-time clock (RTC) with calendar function using external 32.768 kHz crystal.

Peripheral configuration includes 4-channel 16-bit reload timers with complementary PWM output capability, a 10-bit ADC with sample-and-hold and hardware-triggered conversion, and dual serial interfaces (UART0/UART1) with LIN bus support and automatic baud rate detection.

Key Specifications

Pinout & Package

UPD78F1142AGB-GAH-M1-AX is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per Renesas User's Manual U17854EJ9V0UD, Chapter 2.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R5F100PLGFB#30 and MB95F567KPMC-G-SNE1, the UPD78F1142AGB-GAH-M1-AX offers hardware-accelerated motor control features and calendar RTC-critical for time-sensitive industrial automation tasks where software PWM or external RTC would increase latency and component count.

Availability

UPD78F1142AGB-GAH-M1-AX is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, PLC I/O modules, and power supply monitoring requiring stable component supply and long-term lifecycle assurance.

Supply support for UPD78F1142AGB-GAH-M1-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 specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The UPD78F1142AGB-GAH-M1-AX belongs to the 78K0R/KE3 product line, designed specifically for cost-sensitive, high-reliability embedded control applications demanding rich analog integration and deterministic real-time performance.

FAQ

What is the maximum operating frequency of the UPD78F1142AGB-GAH-M1-AX?

The UPD78F1142AGB-GAH-M1-AX supports a maximum system clock frequency of 20 MHz, achievable using either the internal high-speed oscillator (HOCO) or an external crystal up to 20 MHz. This frequency enables sub-50 µs interrupt response times and sufficient throughput for real-time motor control loops running at 10 kHz update rates. The device maintains timing specification compliance across its full −40°C to +85°C operating range.

Does the UPD78F1142AGB-GAH-M1-AX include a hardware real-time clock (RTC)?

Yes, the UPD78F1142AGB-GAH-M1-AX integrates a calendar-mode real-time clock (RTC) with year/month/day/hour/minute/second registers and alarm functionality. It operates from a 32.768 kHz external crystal connected to the dedicated X1/X2 pins and retains timekeeping during STOP mode with typical current consumption of 1.2 µA. This eliminates the need for an external RTC IC in time-stamping applications like industrial data loggers.

What debug interface does the UPD78F1142AGB-GAH-M1-AX support?

The UPD78F1142AGB-GAH-M1-AX supports single-wire debug (SWD) via the RES# pin, enabling full on-chip debugging including breakpoints, register inspection, and memory read/write without dedicated debug pins. Renesas QB-MINI2 and ID78K0R-QB tools provide full SWD compatibility. This interface remains functional even when all GPIO pins are configured for application use, preserving debug access throughout development and field service.

Can the UPD78F1142AGB-GAH-M1-AX perform in-application programming (IAP) of its Flash memory?

Yes, the UPD78F1142AGB-GAH-M1-AX supports in-application programming of its 128 KB Flash memory using the built-in Flash control unit. Firmware updates can be performed via UART or other serial interfaces without halting main application code, provided the executing code resides in RAM or protected Flash sectors. The Flash endurance is rated at 100,000 write/erase cycles, validated per Renesas reliability testing standards.

What is the ADC resolution and channel count of the UPD78F1142AGB-GAH-M1-AX?

The UPD78F1142AGB-GAH-M1-AX features a 10-bit successive approximation ADC with 16 input channels (AN0–AN15), supporting simultaneous sampling on up to 4 channels via hardware trigger. Integral nonlinearity is ±1 LSB, and conversion time is 1.5 µs per channel at 20 MHz clock. This ADC configuration meets requirements for precision current sensing and multi-sensor data acquisition in industrial control systems.