PIC16F877T-20I/PQ Equivalent & Substitute Parts

Part Overview

The PIC16F877T-20I/PQ is an 8-bit microcontroller from Microchip Technology's PIC® 16F series, operating at 20MHz with 14KB FLASH program memory. This device is actively produced and widely used in embedded control applications requiring moderate processing capability and integrated peripherals. Substitute parts are identified to address packaging availability, supply chain requirements, and specific application constraints while maintaining functional compatibility within the PIC 16F family.

Substiute Parts

PIC16F877T-20I/PQ

Microchip TechnologyIn Stock: 2474PIC16F877T-20I/PQ Datasheet

Current PartRFQ

PIC16F877-20I/PQ

Microchip TechnologyIn Stock: 2197PIC16F877-20I/PQ Datasheet

DirectRFQ

PIC16F887T-I/PT

Microchip TechnologyIn Stock: 2157PIC16F887T-I/PT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16F877T-20I/PQ is determined by the following critical parameters:

Core Compatibility Requirements:

• Processor family: PIC 16F series
• Core size: 8-Bit
• Operating speed: 20MHz
• Program memory: 14KB FLASH (8K x 14)
• EEPROM: 256 x 8
• RAM: 368 x 8
• Temperature range: -40°C ~ 85°C
• Supply voltage: Minimum 4V operation capability

Packaging Considerations:

• Surface mount technology
• 44-pin package footprint (10x10mm)
• Pin count: 33 to 35 I/O pins acceptable within PIC 16F series variations

Compliance Requirements:

• ROHS3 compliant
• Active product status

Substitute parts must maintain identical or superior memory specifications, compatible pin configurations, and equivalent electrical operating ranges. Packaging format variations (MQFP vs. TQFP) are acceptable provided PCB footprint compatibility is verified.

Parameter Comparison

Engineering Selection Recommendations

PIC16F877-20I/PQ (Direct Substitute)

This part is functionally identical to the main part number with the only difference being packaging format (Tray vs. standard packaging). Both devices share identical electrical specifications, memory configuration, and operating parameters. Selection is appropriate when packaging format aligns with procurement and assembly requirements. Product status is Active with ROHS3 compliance verified.

PIC16F887T-I/PT (Manufacturer Recommended Alternative)

The PIC16F887T-I/PT represents an enhanced variant within the PIC 16F family. Key differences include:

• Extended supply voltage range (2V ~ 5.5V vs. 4V ~ 5.5V) enabling operation in lower-voltage applications
• Increased analog input channels (14x10b vs. 8x10b)
• Internal oscillator capability (vs. external-only requirement)
• Two additional I/O pins (35 vs. 33)

This device is suitable for applications requiring lower voltage operation, expanded analog functionality, or internal clock generation. Product status is Active with ROHS3 compliance and verified programmability through DiGi-Electronics.

Both substitute parts maintain Active product status and full regulatory compliance (ROHS3, REACH Unaffected, EAR99 classification).

Frequently Asked Questions (FAQ)

Q: Can PIC16F877-20I/PQ be used as a direct replacement for PIC16F877T-20I/PQ?

A: Yes. Both parts are electrically and functionally identical. The difference is packaging format (Tray). PCB footprint and pin configuration are identical. No design changes are required.

Q: What are the key differences between PIC16F877T-20I/PQ and PIC16F887T-I/PT?

A: The PIC16F887T-I/PT offers extended voltage operation (2V minimum vs. 4V), additional analog input channels (14 vs. 8), internal oscillator support, and two extra I/O pins. Core memory and speed specifications are identical. Design modifications may be required if the application relies on external oscillator configuration or specific pin assignments.

Q: Is the PIC16F887T-I/PT compatible with existing PIC16F877 firmware?

A: Firmware compatibility depends on application-specific code. Both devices share the same core instruction set and memory architecture. Applications using only the common feature set will operate without modification. Applications utilizing device-specific features (oscillator configuration, analog channel selection) may require code adjustments.

Q: What packaging format differences exist between these parts?

A: PIC16F877T-20I/PQ and PIC16F877-20I/PQ use 44-MQFP packaging. PIC16F887T-I/PT uses 44-TQFP packaging. Both are 10x10mm surface mount packages with identical pin pitch. PCB footprints are compatible for standard reflow assembly processes.

Q: Are all three parts ROHS3 compliant?

A: Yes. All three parts carry ROHS3 compliance certification with MSL rating of 3 (168 Hours). REACH status is Unaffected for all variants.

Q: Which part should be selected for new designs?

A: Selection depends on application requirements. For standard 5V operation with external oscillator, any of the three parts is suitable. For applications requiring lower voltage operation (below 4V) or expanded analog capabilities, the PIC16F887T-I/PT is recommended. Verify pin assignment compatibility if migrating from PIC16F877 to PIC16F887 due to the two additional I/O pins.