Renesas UPD78F1176AGF(R)-GAT-AX

Overview

UPD78F1176AGF(R)-GAT-AX from Renesas Electronics is a 16-bit single-chip microcontroller in the 78K0R/KH3 family, featuring 128 KB on-chip Flash memory, 8 KB RAM, and integrated peripherals including 12-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 UPD78F1176AGF(R)-GAT-AX datasheet, UPD78F1176AGF(R)-GAT-AX pinout, UPD78F1176AGF(R)-GAT-AX application, or UPD78F1176AGF(R)-GAT-AX equivalent, key selection considerations include its 100-pin LQFP package, Flash endurance (100k write/erase cycles), operating temperature range (−40°C to +85°C), and compliance with industrial-grade reliability standards.

Technical Context

The UPD78F1176AGF(R)-GAT-AX implements the 78K0R CPU core with 16-bit architecture, supporting both standard and expanded-specification instruction sets. It integrates a 12-bit successive-approximation ADC with sample-and-hold and programmable conversion timing, alongside dual UART modules with automatic baud rate detection and I²C master/slave capability.

Its peripheral set includes three 16-bit timer arrays (each with input capture, output compare, PWM generation, and dead-time insertion), a watchdog timer with window function, and on-chip voltage regulator (REGC pin) for internal logic supply stabilization. The device supports in-circuit debugging via on-chip debug interface compatible with QB-MINI2 emulator.

Key Specifications

Pinout & Package

UPD78F1176AGF(R)-GAT-AX is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad for enhanced heat dissipation in continuous industrial operation. Pin functions are defined per Renesas User's Manual U18432EJ5V0UD, Section 2.1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F1176AGF(R)-GAT-AX, R5F10PLGAFP#V0 offers lower power consumption but requires board-level voltage regulation redesign, while MB9BF516RPMC-G-S2 delivers higher compute density at the cost of legacy software porting effort and increased BOM complexity.

Availability

UPD78F1176AGF(R)-GAT-AX is available at Aetrix Electronics and suitable for industrial automation, motor control, and smart metering applications requiring stable component supply across multi-year production cycles.

Supply support for UPD78F1176AGF(R)-GAT-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/KH3 product line was designed for cost-sensitive, high-reliability industrial control applications where deterministic real-time response, Flash endurance, and long-term supply stability are critical.

FAQ

What is the maximum operating frequency of the UPD78F1176AGF(R)-GAT-AX?

The UPD78F1176AGF(R)-GAT-AX supports a maximum CPU clock frequency of 20 MHz using its on-chip PLL. When operating from the main system oscillator without PLL multiplication, the upper limit is 16 MHz. All timing specifications-including ADC conversion time, UART baud rate accuracy, and timer resolution-are validated at 20 MHz under rated voltage and temperature conditions per Renesas User's Manual U18432EJ5V0UD.

Does the UPD78F1176AGF(R)-GAT-AX support in-system programming?

Yes, the UPD78F1176AGF(R)-GAT-AX supports in-system programming via its on-chip serial programming interface (using UART0 or dedicated programming pins). The device includes a factory-programmed bootloader that enables Flash reprogramming without removing the chip from the target board. This capability is documented in Section 4.3 of Renesas Application Note U18706E for the Self Programming Library Type01.

What is the purpose of the REGC pin on the UPD78F1176AGF(R)-GAT-AX?

REGC is the external capacitor connection pin for the internal voltage regulator that supplies the 3.3 V core logic. A 1.0 µF ceramic capacitor must be connected between REGC and VSS to stabilize the regulator output. Failure to install this capacitor results in unstable CPU operation or reset assertion under load transients. This requirement is specified in Section 2.2.21 of the UPD78F1176AGF(R)-GAT-AX User's Manual U18432EJ5V0UD.

Is the UPD78F1176AGF(R)-GAT-AX qualified for automotive applications?

No, the UPD78F1176AGF(R)-GAT-AX is rated for Standard quality grade per Renesas classification, intended for industrial equipment, office automation, and consumer appliances-not automotive or safety-critical systems. It does not meet AEC-Q100 requirements. For automotive-grade equivalents, Renesas recommends the RL78/F13 or RH850/F1L families, which are explicitly qualified for passenger vehicle ECUs.

How many ADC channels does the UPD78F1176AGF(R)-GAT-AX support, and what is their resolution?

The UPD78F1176AGF(R)-GAT-AX integrates a single 12-bit successive-approximation ADC with eight analog input channels (AN00–AN07), accessible via Port 0 pins P00–P03 and dedicated analog pins AV0–AV4. Conversion time is 1.2 µs per sample at 20 MHz CPU clock, and the ADC supports hardware-triggered sampling from timer or external event sources as detailed in Section 12.3 of the UPD78F1176AGF(R)-GAT-AX User's Manual.