PIC16C74B-20I/L

Microcontrollers Overview

The PIC16C74B-20I/L is an 8-bit CMOS EPROM microcontroller from the PIC16CXX mid-range family. It features a high-performance RISC CPU with 4K x 14 words of program memory and 192 bytes of data RAM. Operating at clock frequencies up to 20 MHz, it provides 33 I/O pins and includes an 8-channel 8-bit A/D converter. The device supports multiple communication interfaces including SPI, I2C, and USART, along with three timer modules and two CCP modules.

Microcontrollers Feature Summary

• Integrates an 8-channel 8-bit Analog-to-Digital Converter for analog signal processing.
• Includes a Parallel Slave Port (PSP) for direct interfacing with external microprocessor buses.
• Features Capture, Compare, and PWM modules for precise timing and motor control applications.
• Supports In-Circuit Serial Programming (ICSP) for efficient development and field updates.

Microcontrollers Applications

• Thermostat control systems
• Pressure sensing interfaces
• Appliance control units
• Security system controllers

Microcontrollers Procurement Notes

Verify the specific suffix '20I/L' corresponds to the 20 MHz speed grade and Industrial temperature range (-40°C to +85°C). Confirm the PLCC package type matches the design footprint. Ensure the EPROM memory type aligns with prototyping or low-volume production needs rather than mass OTP requirements.

Microcontrollers Selection Notes

Select this component when 33 general-purpose I/O lines are required alongside extensive analog input capabilities. The inclusion of the Parallel Slave Port distinguishes it from similar devices lacking this feature. Consider the EPROM technology if code reusability during development is prioritized over unit cost in high volumes.

Microcontrollers Part Context

This device belongs to the PIC16C63A/65B/73B/74B series, which shares a common core architecture. It is distinguished by its 40-pin PDIP or 44-pin PLCC/TQFP/MQFP packaging options and the presence of eight A/D channels compared to the five channels found in the PIC16C73B variant.

Microcontrollers Replacement Considerations

PIC16C74B-04I/L offers identical functionality at a lower maximum frequency of 4 MHz. PIC16F874 provides similar peripheral sets but utilizes Flash memory instead of EPROM and operates on a different voltage range.