PIC16LF1503-E/ST Equivalent & Substitute Parts

Part Overview

The PIC16LF1503-E/ST is an 8-bit microcontroller from Microchip Technology's PIC® 16F series, designed for embedded applications requiring low-power operation and compact form factor. This device features 4.6KB of FLASH program memory, 128 bytes of RAM, and integrated peripherals including PWM, watchdog timer, and brown-out detection. The part maintains Active product status with verified availability of 1132 units in stock.

Substitute parts are identified when equivalent functional capability can be achieved within the same package footprint and pin configuration, with compatible electrical specifications and operating parameters.

Substiute Parts

PIC16LF1503-E/ST

Microchip TechnologyIn Stock: 1155PIC16LF1503-E/ST Datasheet

Current PartRFQ

PIC16F1825-E/ST

Microchip TechnologyIn Stock: 3191PIC16F1825-E/ST Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16LF1503-E/ST is determined by the following critical parameters:

• Package compatibility: 14-TSSOP form factor with identical pin count and I/O configuration
• Core architecture: 8-bit PIC microcontroller family
• Pin-to-pin functionality: 11 I/O pins with equivalent peripheral mapping
• Supply voltage range: Must support the 1.8V ~ 3.6V operating window
• Operating temperature range: -40°C ~ 125°C
• Connectivity protocols: I2C and SPI support as minimum requirements
• Regulatory compliance: ROHS3 and REACH status alignment

The PIC16F1825-E/ST qualifies as a substitute based on identical package geometry, matching pin configuration, compatible supply voltage envelope (extended to 5.5V), equivalent I/O count, and shared peripheral feature set including PWM, watchdog timer, and brown-out detection.

Parameter Comparison

Engineering Selection Recommendations

Both the PIC16LF1503-E/ST and PIC16F1825-E/ST maintain Active product status with full regulatory compliance (ROHS3 and REACH). Selection between these parts depends on application-specific memory and performance requirements.

The PIC16LF1503-E/ST is appropriate for applications with constrained program memory requirements (4.6KB maximum) and lower processing speed demands (20MHz operation). This part is optimized for low-power applications within the 1.8V ~ 3.6V supply range.

The PIC16F1825-E/ST provides expanded program memory (14KB), increased RAM (1K x 8), higher processing speed (32MHz), and extended supply voltage compatibility (1.8V ~ 5.5V). This part includes additional connectivity options (LINbus, UART/USART) beyond the base I2C and SPI protocols. Selection of this substitute is appropriate when application firmware exceeds 4.6KB capacity or when higher processing speed or extended voltage range is required.

Both parts share identical package geometry, pin count, I/O configuration, and core peripheral feature set, ensuring mechanical and functional compatibility within the 14-TSSOP form factor.

Frequently Asked Questions (FAQ)

Q: Are the PIC16LF1503-E/ST and PIC16F1825-E/ST pin-compatible?

A: Yes. Both devices use the 14-TSSOP package with identical pin count and I/O pin assignments. Physical and electrical pin compatibility is maintained.

Q: What is the primary difference between these two parts?

A: The PIC16F1825-E/ST provides increased program memory (14KB vs. 4.6KB), larger RAM (1K x 8 vs. 128 x 8), higher clock speed (32MHz vs. 20MHz), and extended supply voltage range (1.8V ~ 5.5V vs. 1.8V ~ 3.6V). Both parts share identical peripheral features and package form factor.

Q: Can I use the PIC16F1825-E/ST as a direct replacement in an existing design?

A: Direct replacement is possible from a package and pin perspective. However, the extended supply voltage range of the PIC16F1825-E/ST (up to 5.5V) requires verification that the application circuit does not exceed the original 3.6V maximum specification of the PIC16LF1503-E/ST. Firmware compatibility must be confirmed, as the increased memory and speed may require code adjustments.

Q: What connectivity protocols are supported by each part?

A: The PIC16LF1503-E/ST supports I2C and SPI. The PIC16F1825-E/ST supports I2C, LINbus, SPI, and UART/USART, providing additional communication options.

Q: Are both parts suitable for low-power applications?

A: Both parts are designed for low-power operation with integrated brown-out detection and watchdog timer functionality. The PIC16LF1503-E/ST is optimized for the 1.8V ~ 3.6V range, while the PIC16F1825-E/ST extends compatibility to 5.5V.

Q: What is the moisture sensitivity level for these parts?

A: Both the PIC16LF1503-E/ST and PIC16F1825-E/ST have a Moisture Sensitivity Level (MSL) of 1, indicating unlimited shelf life without moisture control requirements.