Renesas UPD78F0849GKA2-GAK-G

Overview

UPD78F0849GKA2-GAK-G from Renesas Electronics is a 16-bit CMOS microcontroller in the 78K0/DF2 family, featuring 128 KB on-chip Flash memory, 8 KB RAM, and integrated LCD controller with up to 128-segment drive capability. It operates at up to 20 MHz, supports 5V operation, and includes 10-bit ADC (16 channels), UART, I²C, and timer peripherals - used in industrial control panels and embedded HMI systems.

For engineers reviewing the UPD78F0849GKA2-GAK-G datasheet, UPD78F0849GKA2-GAK-G pinout, UPD78F0849GKA2-GAK-G application, or UPD78F0849GKA2-GAK-G equivalent, key selection criteria include its 100-pin LQFP package, LCD segment/com driver integration, Flash endurance (100k write/erase cycles), and support for single-supply 5V operation without external level shifters.

Technical Context

The UPD78F0849GKA2-GAK-G implements the 78K0 CPU core with 16-bit architecture and Harvard memory organization. It integrates a programmable LCD controller supporting static to 1/4-duty drive with internal bias generation, and features a 10-bit successive-approximation ADC with sample-and-hold and scan mode.

Peripherals include three 16-bit timer arrays (each with capture/compare/PWM), two UARTs with LIN support, one I²C bus interface, and a watchdog timer with independent clock source. The device uses on-chip voltage regulator (REGC pin) to supply internal logic and LCD circuitry from a single 5V rail.

Key Specifications

Pinout & Package

UPD78F0849GKA2-GAK-G 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 User's Manual Rev.3.00 (Oct 2010), including dedicated LCD segment (SEG0–SEG3) and common (COM0–COM3) outputs, AVREF/AVSS for ADC reference, and REGC for internal voltage regulation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F0849GKA2-GAK-G, R5F104LEA offers superior energy efficiency but lacks LCD integration, while UPD78F0839GKA2-GAK-G provides identical peripheral functionality in a lower-cost variant - enabling scalable design reuse across product tiers.

Availability

UPD78F0849GKA2-GAK-G is available at Aetrix Electronics and suitable for industrial control panels, home appliance HMIs, building automation sensor nodes, and portable medical diagnostic equipment requiring stable component supply and long-term lifecycle support.

Supply support for UPD78F0849GKA2-GAK-G 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, and power devices for industrial, automotive, and IoT applications.

The 78K0/DF2 product line delivers cost-optimized 16-bit MCUs with integrated LCD drivers and analog peripherals for embedded human-machine interface and sensor-control applications.

FAQ

What is the maximum operating frequency of the UPD78F0849GKA2-GAK-G?

The UPD78F0849GKA2-GAK-G operates at a maximum CPU clock frequency of 20 MHz using the on-chip oscillator or external crystal. This timing supports real-time response in industrial control loops and fast LCD refresh rates up to 60 Hz for 1/4-duty drive. The UPD78F0849GKA2-GAK-G achieves this performance while maintaining compatibility with standard 5V logic interfaces and legacy system designs.

Does the UPD78F0849GKA2-GAK-G support in-system programming (ISP)?

Yes, the UPD78F0849GKA2-GAK-G supports in-application programming (IAP) via its on-chip Flash memory, allowing firmware updates without removing the device from the PCB. Programming is performed through the on-chip UART interface using Renesas' standard Flash programming protocol. The UPD78F0849GKA2-GAK-G requires no external high-voltage programming signal and retains full functionality during partial reprogramming sequences.

What LCD configurations does the UPD78F0849GKA2-GAK-G support?

The UPD78F0849GKA2-GAK-G supports static, 1/2-duty, and 1/4-duty LCD drive with up to 4 commons (COM0–COM3) and 32 segments per common (SEG0–SEG3), totaling 128 segments. It includes internal bias generation and contrast control registers, eliminating external resistors or voltage dividers. The UPD78F0849GKA2-GAK-G also supports software-selectable frame frequency and blinking modes for enhanced user interface design.

Is the UPD78F0849GKA2-GAK-G qualified for industrial temperature range?

Yes, the UPD78F0849GKA2-GAK-G is rated for operation from −40°C to +85°C and classified as a "Standard" quality grade device per Renesas documentation. It meets industrial reliability requirements for extended temperature operation, including guaranteed Flash data retention for 20 years at 85°C and 100,000 write/erase cycles. The UPD78F0849GKA2-GAK-G is commonly deployed in factory automation controllers and outdoor environmental sensors.

How many ADC channels does the UPD78F0849GKA2-GAK-G provide, and what is their resolution?

The UPD78F0849GKA2-GAK-G integrates a 10-bit successive-approximation ADC with 16 selectable input channels, supporting both single-ended and differential input modes. Conversion time is 1.2 μs per sample at maximum clock speed, and the module includes hardware scan mode for automatic sequential conversion across multiple channels. The UPD78F0849GKA2-GAK-G ADC uses AVREF and AVSS as dedicated analog references to ensure accuracy in noisy industrial environments.