Renesas UPD78F1146AGB-GAH-E3-AX

Overview

UPD78F1146AGB-GAH-E3-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 sensors and motor drive interfaces.

For engineers reviewing the UPD78F1146AGB-GAH-E3-AX datasheet, UPD78F1146AGB-GAH-E3-AX pinout, UPD78F1146AGB-GAH-E3-AX application, or UPD78F1146AGB-GAH-E3-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 UPD78F1146AGB-GAH-E3-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 4 selectable thresholds (2.7 V, 3.0 V, 3.3 V, 4.0 V) and a real-time clock (RTC) with calendar function powered by dedicated sub-clock oscillator input.

Peripherals are organized into functional groups: Timer Array Unit (TAU) with 4 independent 16-bit timers, serial array unit (SAU) configurable as UART/I²C/SPI, and a 12-bit successive-approximation ADC with sample-and-hold and hardware-triggered conversion sequencing across 16 input channels.

Key Specifications

Pinout & Package

UPD78F1146AGB-GAH-E3-AX is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignment follows Renesas' standard 78K0R/KE3 layout, supporting dual power domains (VDD/EVDD and VSS/EVSS) for analog/digital isolation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F1146AGB-GAH-E3-AX, R5F100PLGFB#30 offers superior power efficiency but sacrifices RTC functionality and requires layout changes, while MB95F622KPMC-GS-ERE1 extends temperature capability at the cost of reduced ADC precision and no integrated voltage monitoring.

Availability

UPD78F1146AGB-GAH-E3-AX is available at Aetrix Electronics and suitable for industrial sensor nodes, BLDC motor controllers, smart power meter interfaces, and PLC I/O modules requiring stable component supply across multi-year production cycles.

Supply support for UPD78F1146AGB-GAH-E3-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 automotive, industrial, and IoT markets.

The UPD78F1146AGB-GAH-E3-AX belongs to the 78K0R/KE3 product line, designed specifically for cost-optimized, high-reliability industrial control applications where Flash endurance, analog integration, and long-term supply stability are critical.

FAQ

What is the maximum operating frequency of the UPD78F1146AGB-GAH-E3-AX?

The UPD78F1146AGB-GAH-E3-AX operates at a maximum CPU clock frequency of 20 MHz, supported across its full 2.7–5.5 V supply range and −40°C to +85°C ambient temperature. This frequency is achievable without wait states for both Flash and RAM access, enabling deterministic real-time execution for time-critical control loops. The device also supports programmable clock dividers for peripheral modules to optimize power versus performance trade-offs.

Does the UPD78F1146AGB-GAH-E3-AX include an on-chip debug interface?

Yes, the UPD78F1146AGB-GAH-E3-AX features a single-wire on-chip debug system (OCDS) compliant with Renesas' standard debug protocol. This interface supports full breakpoint/watchpoint functionality, real-time variable monitoring, and non-intrusive trace capture using dedicated debug pins. It requires no additional hardware beyond the QB-MINI2 emulator or compatible tools, and remains active even in low-power stop modes with appropriate wake-up configuration.

What ADC capabilities does the UPD78F1146AGB-GAH-E3-AX provide?

The UPD78F1146AGB-GAH-E3-AX integrates a 12-bit successive-approximation ADC with 16 input channels, ±1 LSB integral nonlinearity, and hardware-triggered conversion sequencing. It supports simultaneous sampling control via TAU timer outputs and includes built-in sample-and-hold circuitry. Conversion results are stored in dedicated RAM areas with DMA-like auto-transfer capability, reducing CPU overhead during high-speed acquisition tasks.

Is the UPD78F1146AGB-GAH-E3-AX RoHS-compliant and halogen-free?

Yes, the UPD78F1146AGB-GAH-E3-AX meets EU RoHS Directive 2011/65/EU requirements and is manufactured as a halogen-free device per IEC 61249-2-21. Renesas confirms compliance through material declarations and third-party testing; the "E3" suffix in the part number explicitly denotes lead-free, RoHS-compliant packaging with matte tin plating on all terminations.

What is the Flash memory endurance specification for the UPD78F1146AGB-GAH-E3-AX?

The UPD78F1146AGB-GAH-E3-AX guarantees 100,000 write/erase cycles for its 128 KB on-chip Flash memory, with data retention exceeding 20 years at +85°C ambient. This endurance is validated per JEDEC JESD22-A117 and applies to all Flash sectors, including those used for EEPROM emulation via Renesas' Self Programming Library Type01 - enabling robust field firmware updates and parameter storage without external nonvolatile memory.