PIC16C64A-10I/P Equivalent & Substitute Parts

Part Overview

The PIC16C64A-10I/P is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 4.6KB OTP program memory and operating at 10MHz. This device is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The PIC16C64A-10I/P is housed in a 40-PDIP package with 33 I/O pins and supports I2C and SPI connectivity protocols.

Substiute Parts

PIC16C64A-10I/P

Microchip TechnologyIn Stock: 1032PIC16C64A-10I/P Datasheet

Current PartRFQ

PIC16F74-I/P

Microchip TechnologyIn Stock: 1506PIC16F74-I/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIC16C64A-10I/P is determined by the following critical parameters:

• Package Compatibility: Both devices must use 40-PDIP packaging with identical pin count (33 I/O) and physical dimensions (0.600", 15.24mm)
• Core Architecture: Both must be 8-bit PIC microcontrollers to maintain instruction set compatibility
• Voltage Supply Range: The substitute must operate within or encompass the 4V ~ 6V supply range
• Connectivity Protocols: I2C and SPI support must be maintained
• Operating Temperature Range: Must support -40°C ~ 85°C operation
• Mounting Type: Through-hole mounting required for PCB compatibility

The PIC16F74-I/P meets all these criteria as an active, pin-compatible alternative from the same manufacturer.

Parameter Comparison

Engineering Selection Recommendations

The PIC16F74-I/P is the qualified substitute for the obsolete PIC16C64A-10I/P based on the following factors:

• Product Status: The PIC16F74-I/P maintains active status with Microchip Technology, ensuring continued availability and support
• Pin Compatibility: Identical 40-PDIP package and 33 I/O pin configuration enable direct PCB replacement without layout modifications
• Compliance: Both devices maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements
• Enhanced Capabilities: The PIC16F74-I/P provides doubled program memory (7KB FLASH vs. 4.6KB OTP), increased RAM (192 x 8 vs. 128 x 8), higher clock speed (20MHz vs. 10MHz), and additional UART/USART connectivity
• Voltage Compatibility: The substitute operates within the lower voltage range (4V ~ 5.5V), which is encompassed by the original device's 4V ~ 6V specification

Frequently Asked Questions (FAQ)

Q: Can the PIC16F74-I/P be used as a direct replacement for the PIC16C64A-10I/P?

A: Yes. Both devices share identical 40-PDIP packaging, pin count (33 I/O), physical dimensions, and core architecture. No PCB modifications are required for physical substitution.

Q: What are the key differences between these devices?

A: The PIC16F74-I/P offers higher performance (20MHz vs. 10MHz), larger program memory (7KB FLASH vs. 4.6KB OTP), increased RAM (192 x 8 vs. 128 x 8), and additional UART/USART connectivity. Program memory type differs: FLASH (reprogrammable) versus OTP (one-time programmable).

Q: Is the voltage supply range compatible?

A: The PIC16F74-I/P operates at 4V ~ 5.5V, which falls within the original device's 4V ~ 6V range. Designs operating above 5.5V require voltage regulation to use the substitute.

Q: Are the peripheral features compatible?

A: Both devices include Brown-out Detect/Reset, Power-on Reset (POR), PWM, and Watchdog Timer (WDT). The PIC16F74-I/P adds UART/USART functionality not present in the original.

Q: What connectivity protocols are supported?

A: Both devices support I2C and SPI. The PIC16F74-I/P additionally supports UART/USART serial communication.

Q: Are there any compliance or certification differences?

A: Both devices are ROHS3 compliant and REACH unaffected. Compliance status is equivalent between the two parts.

Q: Why is the PIC16C64A-10I/P obsolete?

A: The PIC16C series has been superseded by the PIC16F series, which offers FLASH memory (reprogrammable) instead of OTP, improved performance, and enhanced peripheral integration. Microchip Technology has transitioned production to the newer PIC16F line.