DALLAS DS89C430QNG

Mfr. Part

DS89C430QNG

Manufacturer

DALLAS (Dallas Semiconductor, now under Maxim Integrated/Analog Devices)

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Detailed Description

High‑speed, 8051‑compatible microcontroller from the DS89C4xx family, designed for embedded control in legacy 5V systems. Suitable for applications that need the classic 8051 architecture with modern, lead‑free packaging and in‑system programmability. QNG denotes a “Green” (lead‑free, RoHS‑compliant) package. Classified under Integrated Circuits (ICs) → Specialized ICs.

Key Features

8051‑compatible CPU core for easy migration and legacy support

High‑speed core versus standard 8051 devices for faster code execution

On‑chip flash for program storage with in‑system programming support

Integrated timers/counters, serial interfaces, and watchdog typical of DS89C4xx family

5V‑class operation for direct use in legacy designs (check datasheet for exact limits)

Industrial temperature options in the family (confirm for this exact code)

Lead‑free, RoHS‑compliant “QNG” packaging

Available stock: 1412 units

Date code: 20+ (recent production lots; confirm exact lot on request)

Key Advantages

Drop‑in path for many 8051‑based designs, reducing redesign effort

Faster processing than baseline 8051, improving throughput with minimal code change

In‑system programmable flash simplifies updates and field maintenance

Robust 5V I/O ecosystem compatibility

Long history and proven reliability of the Dallas/Maxim 8051 line

Broad toolchain and developer community support for 8051 architecture

Packaging

Type: Lead‑free molded IC package designated by “QNG” (Green/RoHS). The DS89C4xx family commonly ships in QFP/PLCC styles; verify exact style for DS89C430QNG on the datasheet.

Material: Epoxy mold compound, copper leadframe, lead‑free (tin‑based) plating; RoHS compliant

Size: Depends on the exact QNG package option; refer to package drawings for body dimensions and height

Pin configuration: 8051‑style ports (P0–P3), serial pins (RxD/TxD), external memory interface signals typical for 8051; consult the DS89C430 datasheet for the exact pin map of the QNG package

Thermal characteristics: Standard for plastic QFP/PLCC packages; check θJA/θJC and recommended thermal practices in the package datasheet

Electrical properties: 5V‑class supply, CMOS/TTL‑compatible I/Os, internal oscillator options and clocking per DS89C4xx family; see electrical tables and absolute maximum ratings in the official datasheet

Note: “Package / Case: 1497” was provided as a code in the source data. Please verify the exact mechanical package name and pin count in the datasheet to ensure footprint and assembly compatibility.

Lifecycle

Status: Mature legacy microcontroller. Availability can vary by region and date code. Some DS89C4xx variants have moved to NRND or EOL over time; check current status.

Nearing discontinuation: Possible for certain package options or date codes. Contact Y-IC for the latest lifecycle update.

Equivalent/Alternative models:

- Same family: DS89C420 (lower flash), DS89C440 (mid flash), DS89C450 (higher flash/performance). Pinouts, memory sizes, and performance vary; validate drop‑in compatibility.

- Cross‑manufacturer 8051 alternatives (engineering validation required): NXP 80C51/89C51/LPC8xx 8051 variants, Silicon Labs C8051F series, Microchip/Atmel AT89 series, STC 8051 MCUs. Confirm voltage levels, timing, pin functions, and packages before substitution.

If a fully equivalent model cannot be determined for your exact requirements, please contact our sales team via the Y-IC website for personalized cross‑reference and technical support.

Key Application Areas

Industrial control and factory automation

Legacy equipment maintenance and life‑extension programs

Instrumentation and measurement systems

Building controls and HVAC

Telecom interface, modems, and data‑logging

Consumer and white‑goods control boards using 5V logic

Education and training platforms for 8051 architecture

Datasheet

Our website hosts the most authoritative and up‑to‑date datasheet for DS89C430QNG. For exact electrical limits, pinout, package drawings, and programming details, download the datasheet on this page now.

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