Renesas UPD78F1508AGF(R)-GAT-AX

Overview

UPD78F1508AGF(R)-GAT-AX from Renesas Electronics is a 16-bit single-chip microcontroller in the 78K0R/LH3 family, featuring 128 KB on-chip Flash memory, 8 KB RAM, and integrated 10-bit ADC with 24 channels. It operates at up to 20 MHz, supports I²C, UART, and CSI interfaces, and targets embedded control in industrial sensors and motor drive subsystems.

For engineers reviewing the UPD78F1508AGF(R)-GAT-AX datasheet, UPD78F1508AGF(R)-GAT-AX pinout, UPD78F1508AGF(R)-GAT-AX application, or UPD78F1508AGF(R)-GAT-AX equivalent, key selection criteria include Flash endurance (100,000 write/erase cycles), operating voltage range (2.7–5.5 V), and support for low-power STOP mode with RTC wake-up capability.

Technical Context

The UPD78F1508AGF(R)-GAT-AX implements the 78K0R CPU core with 16-bit architecture, Harvard memory organization, and instruction set compatible with earlier 78K0 devices. It integrates a 32-bit programmable watchdog timer, 16-bit multifunction timer array (TAM), and dedicated PWM output channels for precise motor phase control.

Its analog subsystem includes a 10-bit ADC with sample-and-hold, selectable reference sources (AVREFP or internal bandgap), and hardware-triggered conversion sequencing. The device supports dual clock domains - main system clock (up to 20 MHz) and sub-clock (32.768 kHz) - enabling independent real-time clock operation during low-power modes.

Key Specifications

Pinout & Package

UPD78F1508AGF(R)-GAT-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 Hardware User's Manual Rev.5.01 (Jun 2011), Section 1.3.3 and 2.1.3 for 78K0R/LH3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F1508AGF(R)-GAT-AX, R5F10PLGAFP#V0 offers better power efficiency but sacrifices integrated timekeeping, while UPD78F1518AGF(R)-GAT-AX extends functionality with CAN without altering footprint or core peripheral compatibility.

Availability

UPD78F1508AGF(R)-GAT-AX is available at Aetrix Electronics and suitable for industrial sensor nodes, brushless DC motor control systems, and smart power metering applications requiring stable component supply, long-term lifecycle assurance, and full traceability.

Supply support for UPD78F1508AGF(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 headquartered in Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The 78K0R/LH3 product line - including UPD78F1508AGF(R)-GAT-AX - was designed for cost-sensitive, high-reliability embedded control in industrial automation, building management, and appliance applications where Flash endurance and mixed-signal integration are critical.

FAQ

What is the maximum operating frequency of the UPD78F1508AGF(R)-GAT-AX?

The UPD78F1508AGF(R)-GAT-AX operates at up to 20 MHz when powered at 5.0 V, and up to 16 MHz at 3.3 V. Its internal PLL allows multiplication of the external crystal (1–20 MHz) or ceramic resonator input to achieve full-speed operation without requiring high-frequency external clocks. The UPD78F1508AGF(R)-GAT-AX maintains timing compliance across its specified industrial temperature range (−40°C to +85°C) under these conditions.

Does the UPD78F1508AGF(R)-GAT-AX support in-system programming (ISP)?

Yes, the UPD78F1508AGF(R)-GAT-AX supports in-system programming via its on-chip debug interface (OCDS) using standard UART or dedicated debug pins. Firmware updates can be performed without removing the device from the PCB, and the Flash memory supports block erase and byte/word programming with built-in erase verify and program verify functions. The UPD78F1508AGF(R)-GAT-AX requires no external high-voltage supply for programming.

What are the ADC reference voltage options for the UPD78F1508AGF(R)-GAT-AX?

The UPD78F1508AGF(R)-GAT-AX supports three ADC reference configurations: internal bandgap (1.45 V), AVREFP pin (externally supplied, up to VDD), or AVDD itself. Reference selection is controlled by the ADM0 register's ADREF bits. The UPD78F1508AGF(R)-GAT-AX does not support AVREFP on all variants - this pin is present and functional on the LH3 group, including UPD78F1508AGF(R)-GAT-AX, as confirmed in Section 2.2.20 of the Hardware User's Manual.

Is the UPD78F1508AGF(R)-GAT-AX pin-compatible with other 78K0R/LH3 devices?

Yes, the UPD78F1508AGF(R)-GAT-AX shares the same 100-pin LQFP package and pin assignment with other LH3-series MCUs such as UPD78F1506A, UPD78F1507A, and UPD78F1518A. Signal mapping for power, reset, clocks, and all I/O ports is identical across the LH3 family, enabling hardware reuse and migration paths. The UPD78F1508AGF(R)-GAT-AX differs only in Flash size and feature enablement - not in physical or electrical pin behavior.

What debug tools are officially supported for the UPD78F1508AGF(R)-GAT-AX?

Renesas officially supports the QB-MINI2 on-chip debug emulator and the CS+ integrated development environment for the UPD78F1508AGF(R)-GAT-AX. These tools provide full SWD-based debugging, flash programming, and real-time trace capabilities. The UPD78F1508AGF(R)-GAT-AX does not require an external JTAG adapter - its OCDS interface connects directly via 5-pin debug header (VDD, VSS, RESET, TxD, RxD). Third-party tools are not validated by Renesas for this device.