Renesas UPD78F1174AGF(R)-GAT-AX

Overview

UPD78F1174AGF(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 (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 UPD78F1174AGF(R)-GAT-AX datasheet, UPD78F1174AGF(R)-GAT-AX pinout, UPD78F1174AGF(R)-GAT-AX application, or UPD78F1174AGF(R)-GAT-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 UPD78F1174AGF(R)-GAT-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 programmable low-voltage detection circuit (LVD) with 4 selectable thresholds and supports two power-saving modes: HALT and STOP, enabling sub-1 μA standby current with wake-up via external interrupt or RTC alarm.

Peripheral integration includes a 12-bit successive-approximation ADC with sample-and-hold, 3-channel 16-bit reload timers with complementary PWM output capability, and dual serial interface controllers supporting both asynchronous UART and synchronous I²C master/slave operation - all mapped to dedicated port pins with configurable pull-up/pull-down and Schmitt-trigger input options.

Key Specifications

Pinout & Package

UPD78F1174AGF(R)-GAT-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/KH3 layout, supporting full peripheral multiplexing across 16 I/O ports (P0–P16), analog reference inputs (AVREF0/AVREF1), and dedicated reset/debug signals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F1174AGF(R)-GAT-AX, R5F100LEAFB#30 offers better energy efficiency but reduced analog flexibility, while MB95560PFT-G-SNE1 delivers higher performance at the cost of increased board complexity and debug limitations - making UPD78F1174AGF(R)-GAT-AX optimal for analog-intensive, cost-constrained industrial control where proven toolchain and debug maturity are essential.

Availability

UPD78F1174AGF(R)-GAT-AX is available at Aetrix Electronics and suitable for industrial automation, motor control, and smart metering applications requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for UPD78F1174AGF(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 specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The UPD78F1174AGF(R)-GAT-AX belongs to the 78K0R/KH3 product line, designed specifically for cost-sensitive, high-reliability embedded control applications demanding robust analog integration, deterministic real-time response, and long-term manufacturability.

FAQ

What is the maximum operating frequency of the UPD78F1174AGF(R)-GAT-AX?

The UPD78F1174AGF(R)-GAT-AX operates at a maximum CPU clock frequency of 20 MHz across its full industrial temperature range (−40°C to +85°C) and supply voltage range (2.7 V to 5.5 V). This frequency is achieved using the on-chip high-speed oscillator or an external crystal up to 20 MHz. The UPD78F1174AGF(R)-GAT-AX maintains instruction timing compliance and peripheral synchronization at this rate without derating.

Does the UPD78F1174AGF(R)-GAT-AX support in-system programming (ISP)?

Yes, the UPD78F1174AGF(R)-GAT-AX supports in-system programming via its on-chip debug interface (OCDS) using a single-wire connection. Firmware updates can be performed without removing the device from the PCB, leveraging the built-in bootloader that resides in protected ROM. The UPD78F1174AGF(R)-GAT-AX requires only VDD, GND, and the single debug pin (RES#) for ISP operations.

What ADC reference configurations does the UPD78F1174AGF(R)-GAT-AX support?

UPD78F1174AGF(R)-GAT-AX supports three ADC reference modes: internal 2.5 V bandgap (AVREF0 = VDD), external reference on AVREF0 pin (1.0–5.5 V), and dual-reference mode using AVREF0 as positive and AVREF1 as negative reference. This allows ratiometric measurements, isolated signal conditioning, and differential input configurations - all configurable via ADC control registers in the UPD78F1174AGF(R)-GAT-AX.

Is the UPD78F1174AGF(R)-GAT-AX qualified for automotive applications?

No, the UPD78F1174AGF(R)-GAT-AX is rated for industrial use (Standard quality grade) and is not AEC-Q100 qualified. Its specified operating temperature range (−40°C to +85°C) and reliability testing align with industrial equipment requirements such as factory automation and building controls. For automotive applications, Renesas recommends the RL78/F1x or RH850 families instead of the UPD78F1174AGF(R)-GAT-AX.

How many I/O ports and pins does the UPD78F1174AGF(R)-GAT-AX provide?

The UPD78F1174AGF(R)-GAT-AX provides 16 I/O ports (P0 through P16) totaling 80 programmable I/O pins in its 100-pin LQFP package. Port allocation includes dedicated functions: P0/P1 for UART/timers, P4/P5 for I²C, P14 for ADC inputs, and P15/P16 for external bus interface. Unused pins must be tied to VDD or GND via resistors per Renesas' CMOS handling guidelines for the UPD78F1174AGF(R)-GAT-AX.