Renesas UPD78F0472GK(S)-GAK-M1-AX

Overview

UPD78F0472GK(S)-GAK-M1-AX from Renesas Electronics is an 8-bit single-chip microcontroller in the 78K0/LF3 family, featuring integrated LCD controller/driver, 64 KB on-chip Flash memory, 4 KB RAM, and 39 I/O pins in a 64-pin LQFP package. It operates at up to 20 MHz, supports 10-bit ADC (8 channels), and targets low-power embedded applications requiring segment-based display control.

For engineers reviewing the UPD78F0472GK(S)-GAK-M1-AX datasheet, UPD78F0472GK(S)-GAK-M1-AX pinout, UPD78F0472GK(S)-GAK-M1-AX application, or UPD78F0472GK(S)-GAK-M1-AX equivalent, key selection criteria include LCD segment drive capability (up to 288 segments), Flash endurance (100,000 write/erase cycles), operating voltage range (2.7–5.5 V), and industrial temperature grade (−40°C to +85°C).

Technical Context

The UPD78F0472GK(S)-GAK-M1-AX implements the 78K0 CPU core with 16-bit address space, supporting 131 instructions and 8-level hardware stack. Its LCD controller supports static, 2-, 3-, and 4-multiplex driving with programmable bias and frame frequency control.

On-chip peripherals include a 16-bit timer/counters (T0–T2), serial interface (UART/CSI), watchdog timer, and power-on reset circuit. The device uses SuperFlash® technology for Flash memory, enabling fast programming and high reliability without external VPP.

Key Specifications

Pinout & Package

UPD78F0472GK(S)-GAK-M1-AX is housed in a 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined per Renesas Hardware User's Manual Rev.2.00 (R01UH0180EJ0200), Section 1.4.4 and 2.1.4.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F0472GK(S)-GAK-M1-AX, R5F104LEAFB#50 offers newer architecture but removes integrated LCD drive-increasing BOM and firmware overhead-while UPD78F0533GA-GAM-AX provides true pin-compatible upgrade path with doubled Flash and added CAN, making it ideal for scalable product families.

Availability

UPD78F0472GK(S)-GAK-M1-AX is available at Aetrix Electronics and suitable for industrial control panels, portable medical devices, smart energy meters, and home appliance control systems requiring stable component supply and long-term lifecycle support.

Supply support for UPD78F0472GK(S)-GAK-M1-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 IoT markets.

The 78K0/LF3 product line delivers cost-optimized 8-bit MCUs with integrated LCD controllers for display-intensive embedded applications in industrial HMIs, medical instruments, and consumer appliances.

FAQ

What is the maximum LCD segment count supported by the UPD78F0472GK(S)-GAK-M1-AX?

The UPD78F0472GK(S)-GAK-M1-AX supports up to 288 LCD segments using its integrated controller - configurable as 8 commons × 36 segments or 4 commons × 72 segments. This is confirmed in Section 1.1 (Features) and Section 4.1.4 of the 78K0/Lx3 Hardware User's Manual Rev.2.00. The UPD78F0472GK(S)-GAK-M1-AX achieves this without external driver components, reducing system cost and board space.

Does the UPD78F0472GK(S)-GAK-M1-AX require an external crystal for operation?

No, the UPD78F0472GK(S)-GAK-M1-AX includes an on-chip high-accuracy RC oscillator rated at ±1% over temperature and voltage, eliminating the need for an external crystal in most applications. An external crystal (1–20 MHz) remains optional for higher timing precision. This capability is documented in Section 2.2.13 and Chapter 3 of the UPD78F0472GK(S)-GAK-M1-AX Hardware User's Manual.

What is the Flash memory endurance specification for the UPD78F0472GK(S)-GAK-M1-AX?

The UPD78F0472GK(S)-GAK-M1-AX features 64 KB of on-chip Flash memory with guaranteed endurance of 100,000 write/erase cycles and data retention of 10 years at 85°C. These values are specified in the Electrical Characteristics table (Section 27.2) of the official Renesas datasheet and enabled by SuperFlash® technology licensed from SST.

Can the UPD78F0472GK(S)-GAK-M1-AX operate from a single 3.0 V battery?

Yes, the UPD78F0472GK(S)-GAK-M1-AX operates across 2.7 V to 5.5 V, making it compatible with single 3.0 V lithium coin cells (e.g., CR2032) or two alkaline cells. Its STOP mode draws only 0.8 μA at 3.0 V, enabling multi-year battery life in low-duty-cycle applications. This is verified in Section 27.1 (DC Characteristics) of the Renesas datasheet for UPD78F0472GK(S)-GAK-M1-AX.

Is the UPD78F0472GK(S)-GAK-M1-AX pin-compatible with other 78K0/LF3 family members?

The UPD78F0472GK(S)-GAK-M1-AX shares the same 64-pin LQFP package and core pinout (e.g., VDD/VSS, RESET, COMx, SEGx, port pins) with other 78K0/LF3 variants like UPD78F0471 and UPD78F0473, but functional pin assignments (e.g., peripheral multiplexing) differ per variant. Full compatibility requires verification against Section 1.4.4 (Pin Configuration) and Section 2.1.4 (Pin Function List) of the UPD78F0472GK(S)-GAK-M1-AX Hardware Manual.