PIC16F74-I

8-bit PIC MCU, 7KB Flash, 192B RAM, 8-ch 8-bit ADC, 2 CCP, SPI/I2C/USART, PSP, 40-pin classic

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Manufacturer Part：

PIC16F74-I

Package：

40-pin PDIP / 44-pin PLCC / 44-pin TQFP

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Description

Product Overview

The PIC16F74-I is a 40-pin, 8-bit Flash-based CMOS microcontroller from Microchip Technology, featuring the classic Mid-Range PIC architecture with 35 instructions and an 8-level deep hardware stack. This well-established general-purpose MCU offers 7KB (4K x 14 words) of Flash program memory and 192 bytes of RAM. Operating at up to 20 MHz with a 200 ns instruction cycle, it integrates an 8-channel 8-bit ADC, two Capture/Compare/PWM (CCP) modules, a Synchronous Serial Port (SSP) configurable as SPI or I2C, a Universal Synchronous Asynchronous Receiver Transmitter (USART), and a Parallel Slave Port (PSP) for 8-bit parallel communication. With three timers, Brown-out Reset, and In-Circuit Serial Programming (ICSP) capability, the PIC16F74 is pin-compatible with the PIC16C74B and PIC16F874, making it a reliable workhorse for industrial control, automotive applications, consumer electronics, and motor control designs.

Key Specifications

Core Architecture 8-bit PIC (Mid-Range Core)
Program Memory 7KB Flash (4K x 14 words)
RAM 192 bytes
Data EEPROM None
Maximum Speed 20 MHz (5 MIPS)
Operating Voltage 2.0V to 5.5V
I/O Pins 33
ADC 8-bit, 8 channels
Comparators None
Timers 2 x 8-bit (TMR0/TMR2) + 1 x 16-bit (TMR1)
PWM 2 x CCP (Capture/Compare/PWM), 10-bit
Communication SPI, I2C (SSP), USART
Parallel Port PSP (Parallel Slave Port), 8-bit
Oscillator External (RC, XT, HS, LP, EC options)
Stack Levels 8
Interrupt Sources Up to 12
Operating Temperature -40°C to +85°C (Industrial)
Package 40-pin PDIP / 44-pin PLCC / 44-pin QFP / 28-pin variants

Features

  • High-performance RISC CPU with only 35 single-word instructions
  • All single-cycle instructions except program branches (two cycles)
  • 8-level deep hardware stack
  • Direct, indirect, and relative addressing modes
  • 8-channel 8-bit Analog-to-Digital Converter (ADC)
  • Two Capture/Compare/PWM (CCP) modules with 16-bit capture and 10-bit PWM
  • Synchronous Serial Port (SSP) with SPI (Master) and I2C (Slave)
  • Universal Synchronous Asynchronous Receiver Transmitter (USART/SCI)
  • Parallel Slave Port (PSP) with 8-bit wide read/write interface
  • Timer0: 8-bit timer/counter with 8-bit programmable prescaler
  • Timer1: 16-bit timer/counter with prescaler, can increment during Sleep
  • Timer2: 8-bit timer/counter with period register, prescaler, and postscaler
  • Power-on Reset (POR), Power-up Timer (PWRT), Oscillator Start-up Timer (OST)
  • Brown-out Reset (BOR) with brown-out detection circuitry
  • Watchdog Timer (WDT) with on-chip RC oscillator for reliable operation
  • In-Circuit Serial Programming (ICSP) via two pins
  • Programmable code protection for program memory security
  • Power-saving Sleep mode for low-power applications
  • High sink/source current: 25 mA per I/O pin
  • Pinout compatible with PIC16C74B and PIC16F874

Applications

  • Industrial control systems and PLC modules
  • Automotive electronic control units
  • Consumer electronics and home appliances
  • Motor control and power management
  • Data acquisition and sensor interfaces
  • Lighting control systems
  • Medical devices and instrumentation

The PIC16F74 is a 40/44-pin Flash-based 8-bit CMOS microcontroller from Microchip Technology, part of the classic PIC16F7x family featuring the Mid-Range PIC architecture. This well-established general-purpose MCU offers 7KB (4K x 14 words) of Flash program memory and 192 bytes of RAM, operating at up to 20 MHz with a 200 ns instruction cycle (5 MIPS). Its comprehensive peripheral set includes an 8-channel 8-bit ADC for analog sensing, two CCP modules for capture/compare/PWM functions, an SSP module for SPI/I2C communication, a USART for serial communication, and a Parallel Slave Port (PSP) for 8-bit parallel interface with external devices. Three timer modules (TMR0, TMR1, TMR2) provide flexible timing and PWM generation. The device supports multiple oscillator options (RC, XT, HS, LP, EC) for design flexibility. With its 33 I/O pins capable of 25 mA sink/source each, Brown-out Reset, Watchdog Timer, and In-Circuit Serial Programming (ICSP), the PIC16F74 delivers robust performance for a wide range of applications. Pin-compatible with the PIC16C74B and PIC16F874, it provides an easy migration path. Available in PDIP-40, PLCC-44, and TQFP-44 packages with industrial temperature range (-40°C to +85°C).

The PIC16F74 operates on the Mid-Range PIC RISC architecture with Harvard design, providing separate buses for 14-bit program memory and 8-bit data memory for concurrent access. Most of the 35 instructions execute in a single clock cycle, with an 8-level deep hardware stack supporting subroutine calls and interrupt context saving. The 8-bit ADC uses a successive approximation register (SAR) architecture to convert analog voltages from up to 8 input channels with 8-bit resolution. Two CCP (Capture/Compare/PWM) modules provide flexible timing: Capture mode captures the time of external events with 16-bit resolution (12.5 ns max at 20 MHz), Compare mode generates timed output events, and PWM mode generates up to 10-bit resolution PWM signals. The SSP module handles SPI (Master mode) and I2C (Slave mode) communication in hardware, while the USART provides asynchronous serial communication with RS-232 compatibility. The Parallel Slave Port (PSP) provides an 8-bit bidirectional parallel interface with read, write, and chip select control lines, enabling direct connection to external microprocessors or bus systems. Three timer modules (TMR0 8-bit, TMR1 16-bit, TMR2 8-bit with period register) provide timing, counting, and PWM time base functions. Power management features include Sleep mode, Brown-out Reset, and Watchdog Timer for reliable operation across varying supply conditions.

Pin (PDIP-40) Name Type Function
1 MCLR/VPP/RE3 I/P Master Clear / Programming Voltage / Port E I/O
2 RA0/AN0 I/O Port A I/O / ADC Channel 0
3 RA1/AN1 I/O Port A I/O / ADC Channel 1
4 RA2/AN2/VREF- I/O Port A I/O / ADC Ch2 / Vref Negative
5 RA3/AN3/VREF+ I/O Port A I/O / ADC Ch3 / Vref Positive
6 RA4/T0CKI I/O Port A I/O / Timer0 Clock Input
7 RA5/SS/AN4 I/O Port A I/O / SPI Slave Select / ADC Ch4
8 RE0/RD/AN5 I/O Port E I/O / PSP Read / ADC Ch5
9 RE1/WR/AN6 I/O Port E I/O / PSP Write / ADC Ch6
10 RE2/CS/AN7 I/O Port E I/O / PSP Chip Select / ADC Ch7
11 VSS P Ground Reference
12 RD0/PSP0 I/O Port D I/O / Parallel Slave Port Bit 0
13 RD1/PSP1 I/O Port D I/O / Parallel Slave Port Bit 1
14 RD2/PSP2 I/O Port D I/O / Parallel Slave Port Bit 2
15 RD3/PSP3 I/O Port D I/O / Parallel Slave Port Bit 3
16 RC0/T1OSO/T1CKI I/O Port C I/O / T1OSO / Timer1 Clock
17 RC1/T1OSI/CCP2 I/O Port C I/O / T1OSI / CCP2
18 RC2/CCP1 I/O Port C I/O / CCP1
19 RC3/SCK/SCL I/O Port C I/O / SPI Clock / I2C Clock
20 RD4/PSP4 I/O Port D I/O / Parallel Slave Port Bit 4
21 RD5/PSP5 I/O Port D I/O / Parallel Slave Port Bit 5
22 RD6/PSP6 I/O Port D I/O / Parallel Slave Port Bit 6
23 RD7/PSP7 I/O Port D I/O / Parallel Slave Port Bit 7
24 RC4/SDI/SDA I/O Port C I/O / SPI Data In / I2C Data
25 RC5/SDO I/O Port C I/O / SPI Data Out
26 RC6/TX/CK I/O Port C I/O / USART TX/Clock
27 RC7/RX/DT I/O Port C I/O / USART RX/Data
28 VSS P Ground Reference
29 VDD P Positive Supply Voltage
30 RB0/INT I/O Port B I/O / External Interrupt
31 RB1 I/O Port B I/O
32 RB2 I/O Port B I/O
33 RB3/PGM I/O Port B I/O / Low-Voltage Programming
34 RB4 I/O Port B I/O / Interrupt-on-change
35 RB5 I/O Port B I/O / Interrupt-on-change
36 RB6/ICSPCLK I/O Port B I/O / ICSP Clock
37 RB7/ICSPDAT I/O Port B I/O / ICSP Data
38 OSC1/CLKIN I Oscillator Input / Clock Input
39 OSC2/CLKOUT O Oscillator Output / Clock Output
40 VDD P Positive Supply Voltage
  • Industrial PLC modules and process controllers
  • Automotive electronic control units and sensor interfaces
  • Consumer appliances and home automation
  • DC and stepper motor control systems
  • Data acquisition and multi-channel sensor monitoring
  • Lighting control and power management systems
  • Medical instrumentation and patient monitoring
Manufacturer Part Number Package Notes
Microchip PIC16F77-I 40-pin 14KB Flash, 368B RAM, same peripherals
Microchip PIC16F874A-I 40-pin 10-bit ADC, 128B EEPROM, comparators, ICD
Microchip PIC16F877A-I 40-pin 14KB Flash, 10-bit ADC, EEPROM, full featured
Microchip PIC16F73-I 28-pin 7KB Flash, 5-ch ADC, 22 I/O, smaller
Microchip PIC16F1789-I 44-pin Newer gen, enhanced analog, 28KB 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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