PIC16C74B-20I/PQ

Microcontrollers Overview

The PIC16C74B-20I/PQ is an 8-bit CMOS microcontroller from the PIC16CXX mid-range family, manufactured by Microchip Technology. It features a high-performance RISC CPU with 4K x 14 words of EPROM program memory and 192 bytes of data RAM. The device operates at clock frequencies up to 20 MHz with a 200 ns instruction cycle. It includes 33 I/O pins, an 8-channel 8-bit Analog-to-Digital converter, three timer/counters, two Capture/Compare/PWM modules, and serial communication interfaces including SPI, I2C, and USART. The component utilizes low power, high-speed CMOS EPROM technology.

Microcontrollers Feature Summary

• Features a high-performance RISC architecture with a single-cycle execution capability for most instructions.
• Integrates multiple peripheral modules including timers, CCPs, and analog-to-digital conversion capabilities.
• Supports versatile serial communication protocols such as SPI, I2C, and USART.
• Includes robust special features like Brown-out Reset, Watchdog Timer, and Power-on Reset.

Microcontrollers Applications

• Appliance control systems
• Security and remote sensor applications
• Automotive electronic systems

Microcontrollers Procurement Notes

Verify the specific ordering suffix 'PQ' corresponds to the 44-pin PLCC package and industrial temperature range (-40°C to +85°C) as defined in the Product Identification System section of the datasheet. Confirm that the '20' designation indicates the maximum operating frequency of 20 MHz. Ensure compatibility with UV-erasable programming requirements if utilizing windowed variants or verifying production firmware integrity against the specified EPROM characteristics.

Microcontrollers Selection Notes

Select this device when an 8-bit solution with integrated A/D conversion and extensive I/O count is required. The PIC16C74B offers upward compatibility with the PIC16C5X family, facilitating code porting. Consider this part for designs needing parallel slave port interfacing or specific serial communication needs supported by the SSP and USART modules within the industrial temperature range.

Microcontrollers Part Context

This component belongs to the PIC16C63A/65B/73B/74B device variety group documented in DS30605D. It represents the enhanced version of the baseline PIC16C5X architecture, featuring an eight-level deep hardware stack and orthogonal instruction set. The 'C' prefix denotes EPROM memory type operating over the standard voltage range, distinguishing it from the extended voltage 'LC' variants.

Microcontrollers Replacement Considerations

Public confirmed substitute part numbers: PIC16C74B-20I/P, PIC16C74B-20I/SO, PIC16C74B-20I/SS, PIC16C74B-20I/MQFP, PIC16C74B-20I/TQFP, PIC16C74B-20I/WCDIP.