PIC18F252-E/SP Equivalent & Substitute Parts

Part Overview

The PIC18F252-E/SP is an 8-bit microcontroller from Microchip Technology's PIC® 18F series, designed for embedded applications requiring 32KB FLASH memory and comprehensive peripheral support. This device is currently in active production status with verified programmability through DiGi-Electronics. Substitute parts are identified to provide design flexibility when the primary part is unavailable or when application requirements align with alternative specifications within the PIC® 18F family.

Substiute Parts

PIC18F252-E/SP

Microchip TechnologyIn Stock: 1095PIC18F252-E/SP Datasheet

Current PartRFQ

PIC18F2520-E/SP

Microchip TechnologyIn Stock: 920PIC18F2520-E/SP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PIC18F252-E/SP is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Core Size: 8-Bit
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Package / Case: 28-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole
• Voltage Supply Range: 4.2V ~ 5.5V
• Operating Temperature: -40°C ~ 125°C (TA)
• Manufacturer: Microchip Technology
• Series: PIC® 18F

Allowable Variation Parameters:

• Speed: May differ (40MHz primary specification)
• Number of I/O: May differ (23 primary specification)
• Data Converters: May differ (A/D 5x10b primary specification)
• Connectivity Peripherals: May differ or expand
• EEPROM and RAM: May differ within functional compatibility

The PIC18F2520-E/SP qualifies as a direct substitute based on matching all mandatory compatibility parameters while operating at a reduced speed of 25MHz with expanded I/O (25 pins) and enhanced analog conversion capability (A/D 10x10b).

Parameter Comparison

Engineering Selection Recommendations

Both the PIC18F252-E/SP and PIC18F2520-E/SP maintain active product status with ROHS3 compliance and identical regulatory classifications (ECCN: 3A991A2, HTSUS: 8542.31.0001). Selection between these parts depends on application-specific speed requirements and I/O pin availability.

The PIC18F252-E/SP operates at 40MHz maximum clock speed with 23 I/O pins and 5-channel 10-bit analog-to-digital conversion. The PIC18F2520-E/SP operates at 25MHz maximum clock speed with 25 I/O pins and 10-channel 10-bit analog-to-digital conversion. Both devices share identical memory architecture (32KB FLASH, 256 x 8 EEPROM, 1.5K x 8 RAM) and identical supply voltage specifications (4.2V ~ 5.5V).

Applications requiring maximum processing speed should utilize the PIC18F252-E/SP. Applications prioritizing expanded I/O capability or enhanced analog input channels should utilize the PIC18F2520-E/SP. Both devices are suitable for industrial temperature range operation (-40°C ~ 125°C).

Frequently Asked Questions (FAQ)

Q: Can the PIC18F2520-E/SP directly replace the PIC18F252-E/SP in existing designs?

A: Direct replacement is possible only if the application does not require the 40MHz operating speed of the PIC18F252-E/SP. The PIC18F2520-E/SP operates at 25MHz maximum. If the design firmware is speed-independent or can function at 25MHz, the substitute part is compatible. The identical 28-DIP package and pinout support direct socket substitution.

Q: What are the key differences between these two parts?

A: The primary differences are operating speed (40MHz vs. 25MHz), number of I/O pins (23 vs. 25), and analog conversion channels (5x10b vs. 10x10b). All other specifications including memory size, supply voltage, temperature range, and package format are identical.

Q: Are both parts suitable for industrial temperature applications?

A: Yes. Both the PIC18F252-E/SP and PIC18F2520-E/SP operate across the industrial temperature range of -40°C to 125°C (TA).

Q: Do these parts require different programming or firmware modifications?

A: Both parts belong to the PIC® 18F series and share the same instruction set architecture. Firmware compatibility depends on application-specific speed requirements and I/O utilization. Code written for the PIC18F252-E/SP may require timing adjustments if ported to the PIC18F2520-E/SP due to the reduced clock speed.

Q: Are both parts RoHS compliant?

A: Yes. Both the PIC18F252-E/SP and PIC18F2520-E/SP are ROHS3 compliant with Moisture Sensitivity Level (MSL) 1 (Unlimited).