PIC17C762-16/L Equivalent & Substitute Parts

Part Overview

The PIC17C762-16/L is an 8-bit microcontroller from Microchip Technology's PIC® 17C series, featuring 16KB OTP program memory and operating at 16MHz. This device is classified as Active product status and is suitable for embedded applications requiring moderate processing capability with integrated peripherals including I2C, SPI, and UART/USART connectivity.

Substitute parts become necessary when the original PIC17C762-16/L reaches end-of-life status, inventory constraints occur, or application requirements demand enhanced capabilities such as increased memory, higher clock speeds, or improved temperature operating ranges.

Substiute Parts

PIC17C762-16/L

Microchip TechnologyIn Stock: 1123PIC17C762-16/L Datasheet

Current PartRFQ

PIC18F8520-I/PT

Microchip TechnologyIn Stock: 10667PIC18F8520-I/PT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The PIC18F8520-I/PT qualifies as a manufacturer-recommended substitute based on the following substitution criteria:

Core Architecture Compatibility: Both devices utilize the PIC core processor architecture, maintaining instruction set compatibility within the PIC family ecosystem.

Memory Architecture: While the PIC18F8520-I/PT provides 32KB FLASH program memory (compared to 16KB OTP), FLASH memory technology offers reprogrammability advantages over OTP, supporting development and production flexibility.

Electrical Specifications: The PIC18F8520-I/PT operates within an overlapping voltage supply range (4.2V ~ 5.5V), encompassing the original device's 4.5V ~ 5.5V specification.

Peripheral Feature Set: Both devices include identical connectivity protocols (I2C, SPI, UART/USART) and core peripherals (Brown-out Detect/Reset, POR, PWM, WDT), ensuring functional compatibility in applications utilizing these interfaces.

Data Conversion Capability: Both devices feature A/D 16x10b converters, maintaining analog input processing capability.

Compliance Standards: Both devices meet ROHS3 compliance and carry identical HTSUS classification, supporting regulatory and procurement requirements.

Parameter Comparison

Engineering Selection Recommendations

Product Status Alignment: The PIC18F8520-I/PT maintains Active product status classification, ensuring continued manufacturer support, availability, and compliance with current regulatory standards.

Compliance Certification: Both devices achieve ROHS3 compliance and carry identical HTSUS classification (8542.31.0001), supporting regulatory requirements and procurement specifications without modification.

Moisture Sensitivity: Both devices specify MSL 3 (168 Hours) rating, maintaining equivalent handling and storage requirements.

Programmability Verification: The PIC18F8520-I/PT is verified as DiGi-Electronics Programmable, confirming compatibility with standard programming infrastructure.

Physical Integration Consideration: The substitute device utilizes 80-TQFP packaging (12x12mm) versus the original 84-PLCC (29.31x29.31mm) format. PCB layout redesign is required to accommodate the different package footprint and pin configuration.

Frequently Asked Questions (FAQ)

Q: Can the PIC18F8520-I/PT directly replace the PIC17C762-16/L without firmware modification?

A: Core instruction set compatibility exists between PIC 17C and PIC 18F series devices. However, peripheral register addresses and configuration sequences may differ. Firmware review and validation are necessary to ensure proper peripheral initialization and operation.

Q: What are the primary advantages of substituting to the PIC18F8520-I/PT?

A: The substitute device provides FLASH reprogrammable memory (versus OTP), doubled program memory capacity (32KB versus 16KB), 2.5x higher clock speed (40MHz versus 16MHz), expanded RAM (2K x 8 versus 678 x 8), and extended operating temperature range (-40°C to 85°C versus 0°C to 70°C).

Q: Are there packaging constraints when implementing the PIC18F8520-I/PT?

A: Yes. The substitute uses 80-TQFP packaging with a 12x12mm footprint, compared to the original 84-PLCC with 29.31x29.31mm footprint. PCB redesign is required to accommodate the different pin layout and package dimensions.

Q: Does the voltage supply range difference affect circuit design?

A: The PIC18F8520-I/PT supports a lower minimum supply voltage (4.2V versus 4.5V). Existing power supply designs operating within 4.5V to 5.5V remain compatible. Applications requiring operation below 4.5V benefit from the substitute's extended lower voltage specification.

Q: Are the peripheral feature sets equivalent between these devices?

A: Both devices include I2C, SPI, UART/USART connectivity and core peripherals (Brown-out Detect/Reset, POR, PWM, WDT). The PIC18F8520-I/PT adds EBI/EMI interface capability and Low Voltage Detect (LVD) functionality not present in the original device.

Q: What is the impact of the higher operating speed on power consumption?

A: The PIC18F8520-I/PT operates at 40MHz versus 16MHz. Higher clock frequency typically increases dynamic power consumption. Applications with strict power budgets require power consumption analysis and potential clock frequency reduction through firmware configuration.