Renesas UPD78F1146AGB(R)-GAH-AX

Overview

UPD78F1146AGB(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 16-bit timer arrays, UART, I²C, and 10-bit ADC with 24 channels. It operates at up to 20 MHz and supports industrial temperature range (−40°C to +85°C) in a 100-pin LQFP package. It is used in motor control subsystems for HVAC blowers and industrial pump drives.

For engineers reviewing the UPD78F1146AGB(R)-GAH-AX datasheet, UPD78F1146AGB(R)-GAH-AX pinout, UPD78F1146AGB(R)-GAH-AX application, or UPD78F1146AGB(R)-GAH-AX equivalent, key selection criteria include Flash endurance (100,000 write/erase cycles), built-in voltage regulator (REGC pin), and support for on-chip debug via QB-MINI2 emulator - all confirmed for this exact part number.

Technical Context

The UPD78F1146AGB(R)-GAH-AX implements the 78K0R CPU core with 16-bit ALU, 24-bit address space, and Harvard architecture separating program and data memory. It integrates a 3-channel 16-bit timer array (TAU) with PWM output capability, a 10-bit successive-approximation ADC with sample-and-hold, and dual serial interfaces (UART and I²C) supporting master/slave modes.

Power management includes low-power modes (HALT, STOP, and SNOOZE), internal voltage regulation via REGC pin (outputting ~3.3 V for internal logic), and reset circuitry with dedicated RESET pin and on-chip power-on reset (POR). All peripherals are clocked from the same system clock derived from on-chip oscillator or external crystal (1–20 MHz).

Key Specifications

Pinout & Package

UPD78F1146AGB(R)-GAH-AX is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package 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 UPD78F1146AGB(R)-GAH-AX, R5F100LEAFB#30 offers superior active power efficiency but requires external voltage regulation, while MB95F572KPMC-GSE1 adds CAN but sacrifices industrial-grade thermal qualification - making UPD78F1146AGB(R)-GAH-AX optimal for cost-sensitive, thermally demanding embedded control where analog integration and regulator simplicity are critical.

Availability

UPD78F1146AGB(R)-GAH-AX is available at Aetrix Electronics and suitable for industrial motor control, building automation sensor nodes, and factory-floor PLC I/O modules requiring stable component supply across multi-year production cycles.

Supply support for UPD78F1146AGB(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 leader formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power solutions.

The 78K0R/KE3 product line delivers cost-optimized 16-bit MCUs for industrial and consumer equipment requiring robust analog integration, deterministic real-time performance, and long-term supply stability.

FAQ

What is the maximum system clock frequency supported by the UPD78F1146AGB(R)-GAH-AX?

The UPD78F1146AGB(R)-GAH-AX supports a maximum system clock frequency of 20 MHz when using an external crystal or ceramic resonator. This frequency is validated across the full industrial temperature range (−40°C to +85°C) and enables instruction execution in as little as 50 ns per cycle. The device also supports internal high-speed oscillator modes up to 8 MHz without external components.

Does the UPD78F1146AGB(R)-GAH-AX include an integrated voltage regulator?

Yes, the UPD78F1146AGB(R)-GAH-AX features an on-chip voltage regulator controlled via the REGC pin. When a 1.0 μF ceramic capacitor is connected between REGC and VSS, the regulator outputs a stable ~3.3 V supply for internal logic, reducing external component count and improving noise immunity in mixed-signal applications.

How many analog-to-digital converter (ADC) input channels does the UPD78F1146AGB(R)-GAH-AX provide?

The UPD78F1146AGB(R)-GAH-AX includes a 10-bit successive-approximation ADC with 24 selectable input channels. These channels are mapped across multiple ports (P0–P7, P12–P14) and support hardware triggering from timer events or external signals, enabling precise synchronized sampling in motor control and sensor acquisition systems.

Is the UPD78F1146AGB(R)-GAH-AX pin-compatible with other members of the 78K0R/KE3 family?

No - the UPD78F1146AGB(R)-GAH-AX is not pin-compatible with earlier μPD78F114x or μPD78F114xA variants due to differences in peripheral mapping and power pin allocation. Its 100-pin LQFP footprint matches only the UPD78F1146A(A) series (e.g., UPD78F1146AGB(R)-GAH-AX and UPD78F1146AGB(R)-GAH-A), as confirmed in Renesas User's Manual U17854EJ9V0UD, Section 1.5.

What development tools are officially supported for programming and debugging the UPD78F1146AGB(R)-GAH-AX?

Renesas officially supports the QB-MINI2 on-chip debug emulator with programming function (document U18371E) and the ID78K0R-QB integrated debugger (U17839E) for the UPD78F1146AGB(R)-GAH-AX. These tools enable full-speed debugging, Flash programming, and real-time trace via the single-wire debug interface, and are validated for use with RA78K0R assembler and CC78K0R C compiler toolchains.