Renesas UPD78F9488GK-9EU-A

Overview

UPD78F9488GK-9EU-A from Renesas Electronics is an 8-bit single-chip microcontroller in the 78K/0S family, featuring 128 KB on-chip Flash memory, 8 KB RAM, and integrated LCD controller/driver supporting up to 28 segments × 4 commons. It operates at up to 20 MHz with a 2.7–5.5 V supply and includes 10-bit ADC (8 channels), UART, I²C-compatible serial interface, and multiple 8-bit timers. It targets embedded control in consumer electronics with segment-based displays.

For engineers reviewing the UPD78F9488GK-9EU-A datasheet, UPD78F9488GK-9EU-A pinout, UPD78F9488GK-9EU-A application, or UPD78F9488GK-9EU-A equivalent, key selection considerations include its LCD drive capability, Flash endurance (100,000 write/erase cycles), standby current (0.7 µA typical), 78K/0S instruction set compatibility, and industrial temperature range (−40°C to +85°C).

Technical Context

The UPD78F9488GK-9EU-A implements the 78K/0S CPU core with 16-bit address space and supports both single-cycle and multi-cycle instructions. Its on-chip peripherals include a 10-bit A/D converter with sample-and-hold, two independent UART modules (one with LIN support), and a programmable carrier generator for IR remote control.

It integrates an LCD controller/driver with internal bias generation, static and multiplexed drive modes (1/2–1/4 duty, 1/2–1/3 bias), and software-configurable COM/SEG mapping. The device uses a 48-pin QFP package (GK) and supports in-circuit debugging via dedicated pins compatible with IE-78K0S-NS emulators.

Key Specifications

Pinout & Package

UPD78F9488GK-9EU-A is housed in a 48-pin plastic quad flat package (QFP), type GK (10 mm × 10 mm, 0.5 mm pitch), compliant with JEDEC MS-026. Pin functions are defined per User's Manual U15331EJ4V1UD, with dedicated LCD segment/common outputs, dual serial interfaces, reset, and crystal oscillator inputs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F9488GK-9EU-A, UPD78F9489GK-9EU-A offers doubled Flash and RAM for feature-rich firmware, while R5F100LEAFB#30 delivers superior active power efficiency and production longevity - making it suitable for next-generation cost-optimized industrial designs.

Availability

UPD78F9488GK-9EU-A is available at Aetrix Electronics and suitable for home appliance control panels, industrial panel meters, and portable medical device displays requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.

Supply support for UPD78F9488GK-9EU-A 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 UPD78F9488GK-9EU-A belongs to the legacy 78K/0S microcontroller family, designed specifically for cost-sensitive, display-integrated embedded systems in consumer and industrial markets - emphasizing integration, low-power operation, and ease of migration within the 78K ecosystem.

FAQ

What is the maximum operating frequency of the UPD78F9488GK-9EU-A?

The UPD78F9488GK-9EU-A supports a maximum system clock frequency of 20 MHz when using an external crystal oscillator connected to X1/X2. It also includes an internal 1 MHz RC oscillator usable for low-speed operation or as a fallback clock source. The CPU executes instructions at speeds up to 20 million cycles per second, with most instructions completing in one or two clock cycles.

Does the UPD78F9488GK-9EU-A support in-circuit debugging?

Yes, the UPD78F9488GK-9EU-A supports in-circuit debugging via the dedicated debug interface pins (TCK, TDO, TDI, TMS), compatible with Renesas IE-78K0S-NS emulators and ID78K0S-NS integrated debuggers. Debug features include breakpoint setting, register inspection, and real-time variable monitoring without requiring additional debug firmware overhead.

What LCD configurations does the UPD78F9488GK-9EU-A support?

The UPD78F9488GK-9EU-A supports static, 1/2-duty, and 1/4-duty LCD drive modes with selectable bias voltages (1/2 or 1/3). It can drive up to 28 segment lines and 4 common lines, enabling displays such as 4-digit 7-segment + status icons. Segment and common assignments are software-configurable via dedicated LCD control registers.

Is the UPD78F9488GK-9EU-A RoHS compliant?

Yes, the UPD78F9488GK-9EU-A is RoHS compliant and lead-free, as confirmed in Renesas' U15331EJ4V1UD00 revision (2005) and subsequent product change notifications. The "-9EU-A" suffix denotes the lead-free, industrial-grade variant in the GK package, meeting EU Directive 2011/65/EU requirements.

What is the Flash endurance specification for the UPD78F9488GK-9EU-A?

The UPD78F9488GK-9EU-A guarantees 100,000 write/erase cycles for its on-chip Flash memory, with data retention specified for 10 years at +85°C. This endurance rating applies under recommended operating conditions (VDD = 2.7–5.5 V, Ta = −40°C to +85°C) and is validated per Renesas' quality assurance testing protocols.