Renesas UPD78F1142AGB(R)-GAH-AX

Overview

UPD78F1142AGB(R)-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 12-bit ADC (16 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 HMI and sensor interface modules.

For engineers reviewing the UPD78F1142AGB(R)-GAH-AX datasheet, UPD78F1142AGB(R)-GAH-AX pinout, UPD78F1142AGB(R)-GAH-AX application, or UPD78F1142AGB(R)-GAH-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 - all critical for cost-sensitive, long-lifecycle industrial firmware deployments.

Technical Context

The UPD78F1142AGB(R)-GAH-AX implements the 78K0R CPU core with 16-bit ALU, 32 general-purpose registers, and Harvard architecture separating program and data memory spaces. It integrates a 12-bit successive-approximation ADC with sample-and-hold and programmable conversion start triggers from timer or external pins.

Peripheral subsystems include three 16-bit timer arrays (each supporting input capture, output compare, PWM, and interval timing), dual serial interfaces (UART with LIN support and I²C-compatible SMBus), and a 10-channel DMA controller with priority arbitration - enabling deterministic real-time response in motor control feedback loops and multi-sensor polling architectures.

Key Specifications

Pinout & Package

UPD78F1142AGB(R)-GAH-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 across 15 I/O ports (P0–P7, P12–P14), analog inputs (AVREF, AVSS), power domains (VDD/EVDD, VSS/EVSS), reset (RESET), regulator control (REGC), and boot mode (FLMD0).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100PLAFB#30 and MB95F572KPMC-GS-ZE1, the UPD78F1142AGB(R)-GAH-AX provides superior timer flexibility for motor control and retains full compatibility with legacy 78K0R toolchains, while offering higher ADC channel count than the RL78 option and lower clock-frequency overhead than the FM3 part for equivalent processing throughput.

Availability

UPD78F1142AGB(R)-GAH-AX is available at Aetrix Electronics and suitable for industrial HMI panels, sensor signal conditioning units, and motor feedback controllers requiring stable component supply and long-term manufacturing continuity.

Supply support for UPD78F1142AGB(R)-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 manufacturer headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The UPD78F1142AGB(R)-GAH-AX belongs to the 78K0R/KE3 product line, designed specifically for cost-optimized, high-reliability embedded control in industrial equipment where Flash endurance, analog integration, and debug accessibility are prioritized over ultra-high clock speeds.

FAQ

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

The UPD78F1142AGB(R)-GAH-AX supports a maximum CPU clock frequency of 20 MHz when powered from its internal oscillator or an external crystal source. This frequency is sustained across the full −40°C to +85°C operating temperature range and 2.7–5.5 V supply voltage, enabling deterministic real-time execution for time-critical control tasks without derating.

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

Yes, the UPD78F1142AGB(R)-GAH-AX supports in-application programming (IAP) of its 128 KB on-chip Flash memory using the Renesas Self Programming Library Type01. This capability allows firmware updates to be performed in the field via UART or other serial interface without requiring external programming hardware - a key feature for deployed UPD78F1142AGB(R)-GAH-AX systems.

What debug interface does the UPD78F1142AGB(R)-GAH-AX use?

The UPD78F1142AGB(R)-GAH-AX implements a single-wire on-chip debug (SWOC) interface compliant with Renesas' standard debug protocol. It supports full breakpoint, watchpoint, and register inspection functionality through tools like the ID78K0R-QB debugger, eliminating the need for a 5-pin JTAG header and reducing PCB layout complexity for the UPD78F1142AGB(R)-GAH-AX design.

Is the UPD78F1142AGB(R)-GAH-AX pin-compatible with other devices in the 78K0R/KE3 family?

No - the UPD78F1142AGB(R)-GAH-AX uses a 100-pin LQFP package with a unique pinout specific to its variant. While it shares the same 78K0R/KE3 core architecture and peripheral set with μPD78F1142A(A) and μPD78F1143A(A), pin assignments for ports, analog inputs, and power domains differ across models; direct PCB replacement requires verification against the official UPD78F1142AGB(R)-GAH-AX pin configuration diagram.

What quality grade is assigned to the UPD78F1142AGB(R)-GAH-AX?

The UPD78F1142AGB(R)-GAH-AX is classified as a "Standard" quality grade device per Renesas documentation, intended for applications including industrial robots, machine tools, test equipment, and office automation systems. It is not qualified for automotive, medical life-support, or aerospace use unless explicitly requalified and approved by Renesas Electronics in writing.