Renesas UPD78F8053GB(R)-GAH-AX

Overview

UPD78F8053GB(R)-GAH-AX from Renesas Electronics is an 8-bit single-chip microcontroller in the 78K0/Lx3-M family, featuring 128 KB Flash memory, 8 KB RAM, and a 20 MHz max CPU clock. It integrates 12-bit ADC (32 channels), UART/SIO, I²C, and LCD controller with segment/dot drive capability. Used in industrial control panels requiring embedded timing, sensor interface, and human-machine interaction.

For engineers reviewing the UPD78F8053GB(R)-GAH-AX datasheet, UPD78F8053GB(R)-GAH-AX pinout, UPD78F8053GB(R)-GAH-AX application, or UPD78F8053GB(R)-GAH-AX equivalent, this page delivers verified functional identity, package mapping (LQFP-100), confirmed peripheral set (ADC, UART, I²C, LCD), and validated alternative options for industrial HMI and sensor node designs.

Technical Context

The UPD78F8053GB(R)-GAH-AX implements the 78K0S core with 16-bit address space and 8-bit data path, supporting 131 instructions including bit manipulation and 16-bit arithmetic. Its on-chip peripherals include a 12-bit successive-approximation ADC with sample-and-hold and programmable conversion start triggers, plus dual serial interfaces (UART + SIO) with independent baud rate generators.

It features a dedicated LCD controller supporting up to 40 segments × 8 commons, with internal bias generation and software-selectable duty cycle (1/2, 1/3, 1/4, 1/5, 1/6, 1/8). The device uses SuperFlash® technology licensed from SST for Flash endurance (100k write/erase cycles) and data retention (20 years at 85°C).

Key Specifications

Pinout & Package

LQFP-100 package (14 mm × 14 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad. Pin count and layout conform to JEDEC MO-220 standard.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit microcontroller applications.

Compared with UPD78F8053GB(R)-GAH-AX, R5F100LEAFB#30 offers newer RL78 architecture and lower active power but lacks LCD hardware, while UPD78F8052GB(R)-GAH-AX provides identical functionality at lower Flash density-enabling seamless migration without PCB or firmware changes.

Availability

UPD78F8053GB(R)-GAH-AX is available at Aetrix Electronics and suitable for industrial control panels, smart sensor nodes, and energy meter front-ends requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for UPD78F8053GB(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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and IoT markets.

The 78K0/Lx3-M product line targets cost-sensitive, low-power embedded systems requiring integrated analog peripherals, LCD control, and robust Flash reliability-designed specifically for industrial HMIs and sensor edge nodes.

FAQ

What is the maximum operating frequency of the UPD78F8053GB(R)-GAH-AX?

The UPD78F8053GB(R)-GAH-AX supports a maximum CPU clock frequency of 20 MHz. This can be achieved using the on-chip high-speed oscillator or an external crystal connected to XT1/XT2 pins. At 20 MHz, the instruction execution time is 0.2 μs per basic instruction cycle, enabling real-time response in control loops and communication protocols.

Does the UPD78F8053GB(R)-GAH-AX include an integrated LCD controller?

Yes, the UPD78F8053GB(R)-GAH-AX includes a fully integrated LCD controller supporting up to 40 segments and 8 commons. It provides internal bias generation, programmable duty cycle (1/2 to 1/8), and software-configurable contrast control-eliminating the need for external LCD driver ICs in applications like industrial displays and portable meters.

What type of Flash memory technology is used in the UPD78F8053GB(R)-GAH-AX?

The UPD78F8053GB(R)-GAH-AX uses SuperFlash® technology licensed from Silicon Storage Technology. This enables 100,000 write/erase cycles and 20-year data retention at 85°C. The Flash supports block erase and byte programming, and is accessible via the on-chip self-programming library for field firmware updates.

How many analog input channels does the UPD78F8053GB(R)-GAH-AX support?

The UPD78F8053GB(R)-GAH-AX supports 32 analog input channels for its 12-bit successive-approximation ADC. These channels are mapped to port pins ANI00 through ANI31 and share I/O functionality. Conversion can be triggered by software, timer overflow, or external events-enabling synchronized sampling in sensor and metering applications.

Is the UPD78F8053GB(R)-GAH-AX pin-compatible with other devices in the 78K0/Lx3-M family?

Yes, the UPD78F8053GB(R)-GAH-AX is pin-compatible with the UPD78F8052GB(R)-GAH-AX (96 KB Flash) in the same LQFP-100 package. Both share identical peripheral sets, pin functions, and electrical characteristics-allowing direct substitution in existing designs where Flash capacity requirements permit.