STC12C5A60S2-35I

Enhanced 1T 8051 MCU, 35MHz, 60KB Flash, 10-bit 8-ch ADC, PWM/SPI/UART, 40 I/O, LQFP-44, industrial

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Manufacturer Part：

STC12C5A60S2-35I

Package：

LQFP-44

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Description

Product Overview

The STC12C5A60S2-35I-LQFP44 is a high-performance 8051-based microcontroller from STC Micro (Hongjing Technology). Featuring an enhanced 1T 8051 core running at up to 35MHz, it delivers approximately 8-12 times the performance of a traditional 8051 while maintaining full instruction set compatibility. With 60KB of Flash program memory, 1280 bytes of RAM, a 10-bit 8-channel ADC, and rich peripheral set including UART, SPI, I2C, PWM, and PCA, this MCU is ideal for a wide range of embedded applications. The 35I industrial variant comes in an LQFP-44 package.

Key Specifications

Manufacturer STC Micro (Hongjing Technology)
Product Category 8051 Microcontroller (MCU)
CPU Core Enhanced 8051 (1T, single clock cycle)
Maximum Clock Frequency 35 MHz
Program Flash Memory 60 KB
RAM 1280 Bytes (256 + 1024 XRAM)
EEPROM Up to 60 KB (shared with Flash)
ADC 10-bit, 8 channels, 300K sps
PWM / PCA 2 channels (CCP/PCA)
Timers 2 x 16-bit (T0, T1) + WDT
UART 1 x UART
SPI 1 x SPI interface
I/O Pins Up to 40 I/O pins
Voltage Supply Range 4.5V to 5.5V
Internal Oscillator Internal RC (5MHz-35MHz adjustable)
Operating Temperature -40°C to +85°C (industrial, 35I)
Package LQFP-44
ISP/IAP Yes (no external programmer needed)

Features

  • Enhanced 1T 8051 core, 8-12x faster than traditional 8051
  • Up to 35MHz operating frequency
  • 60KB Flash program memory, 100,000+ erase cycles
  • ISP/IAP – in-system/in-application programming
  • 1280 bytes RAM (256 + 1024 XRAM)
  • Built-in EEPROM function
  • 8-channel 10-bit ADC, up to 300K samples/sec
  • 2-channel PCA/CCP/PWM
  • Hardware SPI interface
  • Enhanced UART with baud rate generator
  • Internal high-precision RC oscillator (±1%)
  • Watchdog timer (WDT)
  • Power-on reset and low-voltage reset
  • Up to 40 I/O ports, quasi-bidirectional/strong output/open drain
  • Low power modes: idle, power-down
  • 4.5V to 5.5V operating voltage
  • Industrial temperature range: -40°C to +85°C
  • LQFP-44 package

Applications

  • Industrial control and automation
  • Home appliances and smart home
  • Motor control systems
  • Consumer electronics
  • IoT and sensor nodes
  • LED display and lighting control
  • Power supply management
  • Data acquisition systems

The STC12C5A60S2-35I-LQFP44 is a high-performance single-chip microcontroller based on an enhanced 8051 architecture, manufactured by STC Micro (Hongjing Technology). It features a 1T (single clock cycle per machine cycle) core that delivers approximately 8 to 12 times the performance of a traditional 12T 8051, while maintaining full instruction code compatibility. Operating at up to 35 MHz, this industrial-grade (35I) device provides 60KB of Flash program memory with ISP/IAP capability, 1280 bytes of RAM (256 bytes internal plus 1024 bytes XRAM), and built-in EEPROM functionality. The MCU integrates a rich set of peripherals including an 8-channel 10-bit ADC capable of 300,000 samples per second, 2-channel PCA/CCP/PWM modules, a hardware SPI interface, an enhanced UART, two 16-bit timers, and a watchdog timer. With up to 40 general-purpose I/O pins configurable in multiple modes and an internal high-precision RC oscillator (eliminating the need for an external crystal), the STC12C5A60S2 reduces system cost and PCB area. The device operates from 4.5V to 5.5V and is available in an LQFP-44 package, making it suitable for industrial control, home appliances, motor control, consumer electronics, IoT devices, and various other embedded applications.

The STC12C5A60S2 is based on an enhanced 8051 CPU core that executes instructions in a single clock cycle (1T architecture), dramatically improving performance compared to the traditional 12-clock-cycle 8051. The CPU fetches instructions from the on-chip Flash program memory, executes them using internal registers and ALU, and manages data through the 256-byte internal RAM and 1024-byte extended RAM (XRAM). The 10-bit ADC converts analog signals from up to 8 channels at speeds up to 300K samples per second, with results stored in special function registers accessible via software. The Programmable Counter Array (PCA) provides 2 channels of capture/compare/PWM functionality, useful for motor control, timing measurement, and waveform generation. The SPI interface enables high-speed serial communication with external peripherals. The UART supports standard serial communication with flexible baud rate generation. ISP/IAP technology allows firmware updates through the serial port without requiring a dedicated programmer, significantly simplifying production and field upgrades. The internal RC oscillator provides clock frequencies adjustable from 5MHz to 35MHz, eliminating the need for external crystals in cost-sensitive applications.

Pin Group Pins Description
P0 Port P0.0-P0.7 (8 pins) 8-bit I/O port, open drain output, 8-bit data/address bus
P1 Port P1.0-P1.7 (8 pins) 8-bit I/O port, quasi-bidirectional, ADC input (P1.0-P1.7)
P2 Port P2.0-P2.7 (8 pins) 8-bit I/O port, quasi-bidirectional, high address byte
P3 Port P3.0-P3.7 (8 pins) 8-bit I/O port, quasi-bidirectional, multi-function
P4 Port P4.0-P4.4 (5 pins) 5-bit I/O port, quasi-bidirectional
Reset RST Reset input, high-active
Clock XTAL1, XTAL2 Oscillator pins
Power VCC, GND Power supply and ground
  • Industrial control and automation systems
  • Home appliances and smart home devices
  • Motor drive and motion control systems
  • Consumer electronics products
  • IoT devices and sensor network nodes
  • LED display and lighting control
  • Power supply and battery management
  • Data acquisition and measurement systems
Model Manufacturer Description
STC12C5A32S2 STC Micro 32KB Flash version, same family
STC15W4K56S4 STC Micro STC15 series, 1T, 56KB Flash
STC89C52RC STC Micro Classic 12T 8051, 8KB Flash
STC8A8K64D4 STC Micro STC8 series, high-end 8051 MCU
AT89S52 Microchip Traditional 8051, 8KB Flash
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Quality Assurance

Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

1. Authorized & Genuine Sourcing Promise

All of our electronic components are procured from official authorized distributors and original manufacturers. We strictly reject counterfeits, refurbished parts, disassembled components and gray-market goods. Every product is guaranteed to be brand-new original parts and fully consistent with the original technical parameters. For branded products such as NXP IC series, we maintain complete supply channel documents to realize full product traceability.

2. Strict Full-batch Quality Inspection

We implement 100% full-batch quality control for all goods before shipment. Our professional QC team conducts multi-dimensional tests including appearance inspection, electrical parameter testing, performance verification and packaging check. Each batch of components is attached with complete inspection reports and batch records. We stick to zero-tolerance standards for defective products to ensure every piece of component meets industrial application requirements.

3. Industry Standard Compliance

Our products comply with a variety of international industry quality standards to adapt to high-standard application scenarios:
  • Automotive Electronics: All automotive-grade components pass AEC-Q series certification, featuring excellent stability and durability to adapt to complex vehicle operating environments.
  • Medical Devices: High-reliability components meet medical industry safety and compliance regulations, ensuring stable operation for medical equipment.
  • Industrial Control & Consumer Electronics: Products conform to universal international electronic industry standards, suitable for long-term continuous operation of various equipment.

4. Professional Reliability Control

For static-sensitive, moisture-sensitive and precision components such as ICs, PCBs, sensors and connectors, we carry out reliability screening in advance. Combined with standardized ESD anti-static packaging and vacuum moisture-proof packaging, we avoid component damage caused by static electricity, dampness or collision during storage and transportation, and retain the original performance of products.

5. Traceability Management System

We establish a complete product traceability system. Each batch of goods corresponds to independent batch number, sourcing record, inspection record and delivery record. Customers can query the whole lifecycle information of components at any time. This system effectively solves quality risks and facilitates after-sales handling and production quality control for your company.

6. After-sales Quality Guarantee

If any product is confirmed to have non-conformity quality problems due to our reasons after receipt, we provide free return, exchange and supplementary delivery services. Our professional quality team will also conduct root cause analysis to optimize our quality control process. We respond to quality feedback within 24 hours to resolve your worries efficiently.

Contact Us

If you have inquiries about our quality standards, inspection procedures or product certification documents, please feel free to contact us:

 

Email: info@ic-vendor.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

Shipping & Payment

Materialparts is a professional global supplier of electronic components with over 20 years of industry experience. We provide one-stop supply of passive components, integrated circuits, as well as parts for industrial control, automotive electronics, consumer electronics and medical devices. Below are the unified shipping and payment policies applicable to all orders, samples and bulk purchases worldwide.

1. Payment Terms

We offer a variety of secure and convenient payment methods to meet diverse business cooperation needs. Details are as follows:
  1. Accepted Payment Methods
  • T/T (Bank Wire Transfer): The primary settlement method for bulk orders and a widely used international payment channel.
  • PayPal: Ideal for small orders, sample orders and quick payments.

  1. Settlement Currency

     

    US Dollar (USD) is the default settlement currency. RMB is available for domestic customers.

  2. Bank Charges

     

    All transfer fees, intermediary bank charges and other remittance-related expenses shall be borne by the buyer.

  3. Payment Requirements
  • Sample and small orders: Shipment will be arranged upon full payment.
  • In-stock bulk orders: Goods will be delivered within 2 to 3 working days after full payment.

2. Shipping & Delivery

We partner with leading global logistics providers to ensure safe and fast delivery worldwide. Relevant details are listed below:
  1. Logistics Partners
  • International Express: DHL, FedEx, UPS, TNT
  • Economy Logistics: Air freight and sea freight for large-volume cargo
  • Domestic Delivery: SF Express, Yunda Express
  1. Order Processing Time
  • In-stock items: Orders confirmed and fully paid before 14:00 (GMT+8) will be shipped on the same day. All other orders will be dispatched within 1 to 2 working days.
  • Out-of-stock or sourced items: The delivery lead time will be confirmed separately according to brand and inventory status.
  1. Estimated Transit Time
  • International Express: 3 – 7 working days globally
  • Air Freight: 7 – 12 working days
  • Sea Freight: 25 – 40 working days for heavy and large bulk cargo
  1. Shipping Fee Rules
  • Shipping cost is calculated based on package weight, volume, destination and delivery method.
  • Both freight prepaid and freight collect are available. Please provide your courier account number in advance if you choose freight collect.
  • Free international express delivery is offered for large orders. Terms for long-term partners can be negotiated separately.
  1. Shipment Tracking
     

    Within 24 hours after dispatch, we will send the tracking number, commercial invoice, packing list and other documents to your email or communication account. You may check the shipment status online in real time.

3. General Order Rules & Notes

  1. MOQ & Sample Service

     

    We support flexible minimum order quantities for samples, small-batch and large-batch orders. All sample orders shall comply with the above shipping and payment policies.

  2. Packaging Standard

     

    All electronic components are packed with professional anti-static and shockproof materials. Original factory packaging is available for branded chips and integrated circuits.

4. Customs & Liability Statement

  1. Import Duties & Taxes

     

    All import duties, customs clearance fees and local taxes incurred for international shipments shall be borne by the buyer. We will provide complete customs documents to assist you with clearance procedures.

  2. Handling of Lost or Damaged Goods
  • In case of loss or severe damage during transit, please contact us within 48 hours after receiving the tracking information. We will assist you in filing a claim with the logistics provider.
  • We shall not be liable for any losses caused by incorrect delivery address, wrong contact information or the buyer’s refusal to complete customs clearance.

5. Local Pickup in Shenzhen

Local pickup service is available for customers in Shenzhen and surrounding areas:
  • Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong Province, China
  • Business Hours: 09:00 – 18:00, Monday to Friday. Closed on weekends and official public holidays.
  • Notice: Please make an appointment via email or communication tools one day in advance, and present your order information upon pickup.

Contact Information

Email: info@ic-vendor.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

Core Services

1. One-stop Sourcing & BOM Support

We specialize in a full range of passive and active electronic components, including SMD resistors, power resistors, connectors, aviation connectors, LED beads, flexible circuit boards, printed circuit boards, and integrated circuits. Our professional team provides BOM list consolidation, component matching, and alternative model recommendation services. We support sample orders, small-batch trial production, and mass production orders with flexible MOQs to meet diverse procurement needs.

2. Genuine Product Guarantee & Full-process Quality Inspection

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

3. Fast Quotation & Order Processing

Our customer service team responds promptly to inquiries and quotation requests. All in-stock orders will be processed within one working day. We provide stocking reservation services for long-term cooperative customers, effectively solving problems such as component shortages and unstable supply chains.

4. Professional Technical Support

Our senior engineer team provides free technical consultation, model selection guidance and original manufacturer datasheets. We assist customers in solving problems related to product R&D, circuit design and component application, providing reliable technical support for project progress.

5. Sourcing for Special Components

Relying on our global supply chain network, we professionally source scarce components, obsolete parts and customized special components to efficiently solve your procurement difficulties.

6. Global Logistics & Document Services

We cooperate with mainstream international logistics providers including DHL, FedEx, UPS and TNT to achieve fast global delivery. We can provide complete export documents such as customs declaration files, commercial invoices and packing lists to ensure smooth customs clearance for international shipments. Local pickup is also available for customers in Shenzhen, China.

Professional Packaging Standards

Electronic components are sensitive to static electricity, collision, moisture and dust. We adopt industry-standard anti-static packaging solutions to fully ensure the integrity of goods during transportation and storage.

1. General Packaging Specifications

  • All components are packed separately to avoid damage caused by friction and collision;
  • Shockproof buffer materials are added for fragile products to ensure transportation safety;
  • Each package is clearly marked with part number, quantity, batch number and specifications for easy inventory counting and management.

2. Classified Professional Packaging

  • Anti-static Packaging: Static-sensitive components such as chips, circuit boards and sensors are packaged with anti-static bags, shielding boxes and conductive foam in strict accordance with international anti-static standards to prevent static damage.
  • Vacuum Moisture-proof Packaging: Moisture-sensitive components are vacuum-sealed with desiccants to isolate humid air, suitable for ocean transportation and long-term storage.
  • Original Factory Packaging: Integrated circuits of brands such as NXP are delivered with original reels, trays or tubes by default, retaining complete original packaging and adapting to automated SMT production lines.
  • Discrete Device Packaging: Discrete devices such as SMD resistors, power resistors and LEDs are quantitatively and classifiedly packaged with accurate quantity and clear marking.
  • Connector / Aviation Connector Packaging: Hard outer packaging is adopted to prevent pin bending and structural deformation.

3. Custom Packaging Services

We provide value-added services including personalized packaging, custom labeling and re-reeling according to customer requirements, fully matching your production and warehouse management standards.

Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@ic-vendor.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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Submit your component procurement and custom packaging needs via the form below. We will provide a detailed quotation and professional solution within 1–8 working hours.

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