PIC16F648AT-I/SO Equivalent & Substitute Parts

Part Overview

The PIC16F648AT-I/SO is an 8-bit microcontroller from Microchip Technology's PIC® 16F series, featuring 7KB FLASH program memory, 256 x 8 bytes of EEPROM, and 256 x 8 bytes of RAM. This device operates at 20MHz with a supply voltage range of 3V to 5.5V and includes integrated peripherals such as UART/USART connectivity, PWM, watchdog timer (WDT), and brown-out detection. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Identifying equivalent and substitute parts is necessary when the primary part number becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when inventory constraints necessitate sourcing from alternative stock channels.

Substiute Parts

PIC16F648AT-I/SO

Microchip TechnologyIn Stock: 1000310PIC16F648AT-I/SO Datasheet

Current PartRFQ

PIC16F648A-I/SO

Microchip TechnologyIn Stock: 8621PIC16F648A-I/SO Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIC16F648AT-I/SO is determined by strict equivalence across the following critical parameters:

• Core Architecture: PIC 8-bit processor
• Memory Configuration: 7KB FLASH program memory (4K x 14), 256 x 8 EEPROM, 256 x 8 RAM
• Operating Frequency: 20MHz maximum
• Supply Voltage Range: 3V to 5.5V
• I/O Count: 16 I/O pins
• Peripheral Set: UART/USART, PWM, WDT, brown-out detection
• Package Type: 18-SOIC surface mount
• Pin Configuration: Identical pinout required for direct substitution

The PIC16F648A-I/SO meets all these criteria and is classified as a direct equivalent. Substitution is valid when the application requires identical electrical and functional characteristics. Packaging format differences (Cut Tape vs. Tube) do not affect electrical compatibility and represent alternative supply chain options for the same component.

Parameter Comparison

Engineering Selection Recommendations

Both the PIC16F648AT-I/SO and PIC16F648A-I/SO are active production devices from Microchip Technology with identical electrical specifications and functional capabilities. Selection between these parts is determined by packaging and supply chain requirements rather than technical performance.

The PIC16F648AT-I/SO in Cut Tape format is suitable for high-volume automated assembly processes where tape-and-reel feeding is standard. The PIC16F648A-I/SO in Tube packaging is appropriate for lower-volume applications, manual assembly, or when tube-based component handling is preferred.

Both devices maintain ROHS3 compliance and carry unlimited moisture sensitivity rating (MSL 1), indicating no special storage or handling requirements. Either part is suitable for applications requiring 8-bit microcontroller functionality with the specified memory, I/O, and peripheral configuration within the -40°C to 85°C operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can PIC16F648A-I/SO replace PIC16F648AT-I/SO in existing designs?

A: Yes. Both parts are electrically and functionally identical. The difference is packaging format: Cut Tape versus Tube. No circuit modifications or firmware changes are required.

Q: What is the difference between Cut Tape and Tube packaging?

A: Cut Tape (CT) packaging supplies components on continuous tape suitable for automated pick-and-place equipment. Tube packaging supplies components in plastic tubes for manual handling or lower-volume assembly. Both contain the same component with identical specifications.

Q: Are there any pin configuration differences between these parts?

A: No. Both parts use the 18-SOIC package with identical pinout. Direct PCB substitution is possible without layout modifications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both PIC16F648AT-I/SO and PIC16F648A-I/SO are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity rating.

Q: Which part should be selected for new designs?

A: Selection depends on manufacturing process requirements. For automated assembly with tape-and-reel feeding, use PIC16F648AT-I/SO. For manual assembly or lower-volume production, use PIC16F648A-I/SO. Both are active production parts with equivalent long-term availability.

Q: Are firmware or software changes needed when switching between these parts?

A: No. Both parts execute identical instruction sets and support the same development tools and programming methods. Existing firmware requires no modification.