Renesas UPD78F1143AGB-GAH-AX

Overview

UPD78F1143AGB-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 (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 industrial control and sensor interface applications requiring deterministic real-time response.

For engineers reviewing the UPD78F1143AGB-GAH-AX datasheet, UPD78F1143AGB-GAH-AX pinout, UPD78F1143AGB-GAH-AX application, or UPD78F1143AGB-GAH-AX equivalent, key selection criteria include Flash endurance (100k write/erase cycles), operating temperature range (−40°C to +85°C), and support for low-power stop modes with wake-up via external interrupt or peripheral event.

Technical Context

The UPD78F1143AGB-GAH-AX implements the 78K0R CPU core with 16-bit ALU, 16-bit data bus, and Harvard architecture. It integrates a programmable 8-bit/16-bit timer array (TAU) with capture/compare and PWM output capability, plus a 10-bit successive-approximation ADC with sample-and-hold and hardware-triggered conversion sequencing.

It supports multiple clock sources: main system clock (up to 20 MHz crystal or external input), sub-clock (32.768 kHz), and on-chip oscillator (1 MHz). Reset management includes power-on reset (POR), low-voltage detection (LVD), and watchdog timer (WDT) with window function - all configurable via dedicated SFRs without external components.

Key Specifications

Pinout & Package

UPD78F1143AGB-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 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 R5F10PLGKSP#V0 and MB9BF516RPMC-G-S2, the UPD78F1143AGB-GAH-AX delivers optimal balance of deterministic real-time control, integrated analog peripherals, and industrial-grade reliability at lower system cost - especially where precise PWM timing, hardware ADC triggering, and proven field deployment matter more than raw MIPS or connectivity breadth.

Availability

UPD78F1143AGB-GAH-AX is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, PLC I/O modules, and home appliance control boards requiring stable component supply across long production lifecycles.

Supply support for UPD78F1143AGB-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 headquartered in Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The 78K0R/KE3 product line was designed specifically for cost-sensitive, high-reliability industrial control applications requiring deterministic real-time performance, integrated analog interfaces, and long-term supply assurance - with UPD78F1143AGB-GAH-AX representing its mid-range feature and memory configuration.

FAQ

What is the maximum operating frequency of the UPD78F1143AGB-GAH-AX?

The UPD78F1143AGB-GAH-AX supports a maximum system clock frequency of 20 MHz. This is achievable using an external crystal oscillator or external clock input. When using the on-chip oscillator, the typical frequency is 1 MHz with ±10% tolerance. The CPU executes instructions at one cycle per instruction for most operations, enabling predictable real-time timing critical for motor control and sensor sampling tasks in the UPD78F1143AGB-GAH-AX.

Does the UPD78F1143AGB-GAH-AX include on-chip debug capability?

Yes, the UPD78F1143AGB-GAH-AX supports on-chip debugging via a single-wire debug (SWD) interface compatible with Renesas QB-MINI2 and other compliant emulators. No dedicated debug pins are required - the interface shares pins with standard I/O functionality. Debug features include full register visibility, hardware breakpoints, watchpoints, and flash programming during development, all accessible without modifying the target board layout for the UPD78F1143AGB-GAH-AX.

What is the Flash memory endurance specification for the UPD78F1143AGB-GAH-AX?

The UPD78F1143AGB-GAH-AX specifies 100,000 write/erase cycles for its 128 KB on-chip Flash memory, with guaranteed data retention of 10 years at +85°C. This endurance rating applies to the entire Flash array and is validated under Renesas' Standard quality grade testing protocol. Field firmware updates in the UPD78F1143AGB-GAH-AX can therefore be performed reliably across extended product lifetimes without wear-leveling overhead.

Can the UPD78F1143AGB-GAH-AX operate from a 3.3 V supply?

Yes, the UPD78F1143AGB-GAH-AX operates across a supply voltage range of 2.7 V to 5.5 V, fully supporting 3.3 V nominal systems. All I/O pins are 5 V tolerant when configured as inputs, allowing direct interface with 5 V peripherals without level shifters. Internal regulators generate stable 3.3 V and 1.8 V rails for analog and core logic, ensuring consistent timing and ADC accuracy regardless of VDD variation within spec - a key design advantage of the UPD78F1143AGB-GAH-AX.

What peripheral interfaces are integrated into the UPD78F1143AGB-GAH-AX?

UPD78F1143AGB-GAH-AX integrates UART (2 channels), I²C (1 channel), 16-bit timer array (TAU) with PWM and capture/compare, 10-bit ADC (16 channels), watchdog timer (WDT), low-voltage detector (LVD), and hardware CRC calculator. It does not include USB, CAN, or Ethernet controllers. These peripherals are tightly synchronized - for example, TAU can trigger ADC conversions automatically - reducing software overhead and improving determinism in time-critical applications using the UPD78F1143AGB-GAH-AX.