Renesas UPD78F1142AGB-GAH-AX

Overview

UPD78F1142AGB-GAH-AX from Renesas Electronics is a 16-bit single-chip microcontroller in the 78K0R/KE3 family, featuring 128 KB on-chip Flash memory, 8 KB RAM, and integrated peripherals including 10-bit ADC (8 channels), UART, I²C, and 16-bit timer arrays. 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-AX datasheet, UPD78F1142AGB-GAH-AX pinout, UPD78F1142AGB-GAH-AX application, or UPD78F1142AGB-GAH-AX equivalent, key selection considerations include its 64-pin LQFP package, 10-bit ADC resolution with sample-and-hold, dual UART support with LIN-compliant mode, and Flash endurance of 100,000 write/erase cycles - all critical for deterministic real-time control in cost-sensitive industrial systems.

Technical Context

The UPD78F1142AGB-GAH-AX implements the 78K0R CPU core with 16-bit architecture, Harvard memory organization, and instruction set compatible with earlier 78K0 devices. It supports three power-saving modes (HALT, STOP, and SNOOZE) with wake-up via external interrupt or peripheral event.

On-chip peripherals include a 16-bit multifunction timer (TM00–TM03) with input capture/output compare, a watchdog timer with independent clock source, and a voltage detection circuit (VDET) configurable for 2.7 V or 4.2 V reset threshold - enabling robust operation in variable-voltage environments without external supervision ICs.

Key Specifications

Pinout & Package

UPD78F1142AGB-GAH-AX is housed in a 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch) package compliant with JEDEC MO-220. The package supports reflow soldering and provides thermal pad for enhanced heat dissipation in continuous-duty applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F1142AGB-GAH-AX, R5F100LEAFB#30 trades I/O and bus flexibility for compactness, while UPD78F1144AGB-GAH-AX offers scalable Flash capacity within identical mechanical and electrical constraints - making it the only true pin- and code-compatible upgrade path.

Availability

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

Supply support for UPD78F1142AGB-GAH-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 formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power solutions for industrial and automotive markets.

The 78K0R/KE3 product line delivers cost-optimized 16-bit MCUs targeting deterministic real-time control in resource-constrained embedded systems - emphasizing low-power operation, integrated analog peripherals, and industrial-grade reliability without external support components.

FAQ

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

The UPD78F1142AGB-GAH-AX supports a maximum system clock frequency of 20 MHz, achievable using either the internal high-speed oscillator (with ±1% accuracy after calibration) or an external crystal/resonator. This frequency enables real-time execution of motor control algorithms and fast ADC conversions while maintaining deterministic interrupt latency - critical for closed-loop systems where jitter must remain below 1 μs.

Does the UPD78F1142AGB-GAH-AX support in-system programming (ISP)?

Yes, the UPD78F1142AGB-GAH-AX supports in-application programming (IAP) via its on-chip Flash memory, allowing firmware updates without removing the device from the target board. The UPD78F1142AGB-GAH-AX implements a dedicated Flash control register set and sector protection mechanism, enabling safe reprogramming of user code areas while preserving bootloader and configuration data - essential for remote maintenance in deployed industrial equipment.

What power-saving modes does the UPD78F1142AGB-GAH-AX offer?

The UPD78F1142AGB-GAH-AX provides three low-power modes: HALT (CPU stopped, peripherals active), STOP (CPU and most peripherals halted, RAM retained), and SNOOZE (selected peripherals like UART or ADC operate while CPU sleeps). In STOP mode, the UPD78F1142AGB-GAH-AX draws just 0.9 μA at 3.3 V, with wake-up possible via external interrupt or peripheral event - making it suitable for battery-powered sensor nodes requiring multi-year operation.

Can the UPD78F1142AGB-GAH-AX generate PWM signals with dead-time insertion?

Yes, the UPD78F1142AGB-GAH-AX's 16-bit timer array (TM00–TM03) supports complementary PWM output with programmable dead-time insertion - a requirement for driving half-bridge or three-phase inverter stages without shoot-through. Each timer channel can be configured for center-aligned or edge-aligned PWM, and dead-time values are set in nanosecond increments via dedicated registers, ensuring precise gate timing control directly within the UPD78F1142AGB-GAH-AX without external logic.

Is the UPD78F1142AGB-GAH-AX qualified for automotive applications?

No, the UPD78F1142AGB-GAH-AX is rated as a "Standard" quality grade device per Renesas documentation, intended for industrial, office, and consumer applications - not automotive or safety-critical systems. It lacks AEC-Q100 qualification, extended temperature range (-40°C to +85°C only), and automotive-specific fault diagnostics. For automotive use, Renesas recommends the RL78/F13 or RH850 families, which are explicitly designed and certified for vehicle ECUs.