NEC UPD78F0546GC(R)-UBT-A

Mfr. Part

UPD78F0546GC(R)-UBT-A

Manufacturer

NEC (now part of Renesas Electronics). Y-IC is a quality distributor of this brand, and we will provide you with the best products and services.

Detailed Description

Flash-based 8-bit microcontroller from the NEC 78K0 family. 80-pin TQFP package for general-purpose embedded control. The GC(R)-UBT-A suffix indicates a RoHS lead-free LQFP/TQFP variant. Designed for cost-sensitive, reliable, low-power control in industrial and consumer electronics. Includes on-chip Flash, RAM, timers, serial interfaces, ADC, watchdog, and reset/BOD features typical of the 78K0 series. Use the datasheet on this page to confirm exact memory size, pinout, and peripheral mix for this specific sub-variant.

Key Features

8-bit NEC 78K0 CPU core for efficient control code

On-chip Flash program memory and SRAM (capacity depends on the 78F0546 sub-variant)

80-pin TQFP package for rich I/O and easy PCB routing

Multiple serial interfaces: UART/USART, I2C, SPI (availability varies by sub-variant)

Timers/counters (8/16-bit), PWM generation for motor/control tasks

Integrated ADC (typical 8/10-bit in this family) for sensor inputs

Watchdog timer and brown-out/reset protection

Internal oscillator plus external clock options

Low-power modes for battery or energy-saving applications

On-chip debug support (family-dependent)

Key Advantages

Mature, proven 78K0 platform with wide field use

Low cost and stable behavior for long-life designs

Rich peripheral set reduces external components

Simple 8-bit architecture for fast bring-up and maintenance

Broad ecosystem of tools and documentation from the NEC/Renesas lineage

Clear migration path to Renesas RL78 for future upgrades

Packaging

Type: TQFP-80P (Thin Quad Flat Package, 80 leads, gull-wing)

Material: Molded epoxy plastic, lead-free, RoHS-compliant (GC(R) indicates Pb-free)

Body size and pitch: 80-pin TQFPs are typically 0.5 mm lead pitch; body size commonly around 12 × 12 mm, thin profile (verify exact dimensions in the datasheet)

Pin configuration: 80 I/O pins; mixed GPIO, power, ground, and dedicated peripheral pins per 78F0546 pin map (see datasheet pin assignment)

Thermal characteristics: TQFP thermal performance depends on PCB copper area; follow datasheet thetaJA/thetaJC values and board layout guidance for heat spreading

Electrical properties: Standard CMOS microcontroller I/O levels; typical 78K0 supply voltage range and clocking options (confirm exact VDD, I/O drive, and timing specs in the datasheet)

Handling: Moisture Sensitivity Level (MSL) typical for TQFP; use dry-pack and reflow per JEDEC J-STD-020 (check device label and datasheet)

Supplier package/case reference: 2557 (supplier internal code as provided)

Lifecycle

Status: The NEC 78K0 family is considered mature/legacy under Renesas. Some variants are NRND (Not Recommended for New Designs) in certain regions. Production status can vary by part code and lot.

Migration: Renesas RL78 family is the recommended migration path for new designs, offering lower power and enhanced peripherals.

Equivalent/alternative models (verify pin/peripheral compatibility in the datasheet):

- Same family/siblings: uPD78F0545 series, uPD78F0547 series (different memory/I/O options)

- Migration family: Renesas RL78/G13 series (e.g., R5F10xxx), RL78/G12 or RL78/G14 depending on required peripherals and pins

- Other 78K0 variants with similar packages may fit as drop-in only if pinout and features match; confirm case-by-case

If you need confirmed, in-stock direct equivalents or vetted cross-references, contact Y-IC sales via our website. We will help you select pin-compatible or function-compatible options and provide last-time-buy guidance if applicable.

Key Application Areas

Industrial control panels and PLC I/O modules

Home appliances and white goods control boards

Motor control, fans, pumps, and small drives

Power management and battery-powered instruments

Building automation, HVAC controllers, thermostats

Consumer electronics, audio, and small UI controllers

Measurement, sensing, and data loggers

Legacy system maintenance and form/fit/function replacements

Datasheet

Our website hosts the most authoritative datasheet for UPD78F0546GC(R)-UBT-A. Download it on this page to get exact memory sizes, pin assignments, electrical limits, timing, and packaging drawings.

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