PIC18LF452T-I/L Equivalent & Substitute Parts

Part Overview

The PIC18LF452T-I/L is an 8-bit microcontroller from Microchip Technology's PIC® 18F series, featuring 32KB FLASH program memory, 1.5KB RAM, and 256 bytes of EEPROM. This device integrates 34 I/O pins, multiple communication interfaces (I2C, SPI, UART/USART), and analog-to-digital conversion capabilities. The part is classified as obsolete, making identification of compatible substitutes essential for ongoing system support and new design implementations.

Substiute Parts

PIC18LF452T-I/L

Microchip TechnologyIn Stock: 996PIC18LF452T-I/L Datasheet

Current PartRFQ

PIC18LF452-I/L

Microchip TechnologyIn Stock: 6694PIC18LF452-I/L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIC18LF452T-I/L is determined by strict equivalence across core electrical and mechanical parameters. The substitute part PIC18LF452-I/L maintains identical specifications across all critical dimensions:

Key Parameters for Substitution:

• Core processor architecture (PIC 8-bit)
• Program memory capacity and type (32KB FLASH)
• RAM and EEPROM configuration (1.5KB x 8 RAM, 256 x 8 EEPROM)
• Operating speed (40MHz)
• Supply voltage range (2V ~ 5.5V)
• I/O pin count (34)
• Package type and pinout (44-LCC J-Lead)
• Peripheral feature set (I2C, SPI, UART/USART, PWM, WDT, LVD, POR, Brown-out Detect/Reset)
• Data converter specifications (A/D 8x10b)
• Operating temperature range (-40°C ~ 85°C)

The substitute part differs only in product status (Active vs. Obsolete) and packaging format (Tube vs. standard), with no impact on functional or electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The PIC18LF452-I/L serves as a direct functional equivalent to the PIC18LF452T-I/L. Both parts maintain identical electrical specifications, memory configurations, peripheral sets, and package geometries. The primary distinction is product lifecycle status: the main part is classified as obsolete while the substitute remains in active production.

For new designs or system replacements, the PIC18LF452-I/L is the appropriate selection due to its active status and continued availability. Both parts carry ROHS3 compliance and REACH unaffected certification, ensuring regulatory alignment. The identical MSL rating (3, 168 hours) and operating temperature range (-40°C ~ 85°C) confirm environmental compatibility across applications.

Frequently Asked Questions (FAQ)

Q: Are PIC18LF452T-I/L and PIC18LF452-I/L pin-compatible?

A: Yes. Both parts use the 44-LCC (J-Lead) package with identical pinout and electrical characteristics. Direct PCB substitution is supported without layout modifications.

Q: What is the difference between these two part numbers?

A: The parts are electrically and functionally identical. The primary difference is product status: PIC18LF452T-I/L is obsolete, while PIC18LF452-I/L is actively manufactured. The packaging format differs (standard vs. tube), but this does not affect component performance.

Q: Can I use PIC18LF452-I/L as a replacement in existing designs using PIC18LF452T-I/L?

A: Yes. The substitute part maintains all electrical specifications, memory capacity, I/O configuration, and peripheral functionality. No firmware or hardware modifications are required.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical ROHS3 compliance, REACH unaffected status, and MSL ratings. Environmental and regulatory requirements are equivalent.

Q: What is the operating temperature range for both parts?

A: Both the PIC18LF452T-I/L and PIC18LF452-I/L operate across -40°C to 85°C (TA), supporting industrial and commercial temperature specifications.

Q: Do both parts support the same communication protocols?

A: Yes. Both parts integrate I2C, SPI, and UART/USART interfaces, along with identical peripheral features including PWM, WDT, LVD, POR, and Brown-out Detect/Reset functionality.