PIC16C770-I/P Equivalent & Substitute Parts

Part Overview

The PIC16C770-I/P is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 4.6KB OTP (One-Time Programmable) memory, 20MHz operation, and 15 I/O pins in a 20-DIP package. This device is classified as Active product status and is RoHS3 compliant. Finding equivalent or substitute parts becomes necessary when OTP memory limitations require reprogrammable alternatives, when package form factors need adjustment, or when design requirements shift toward flash-based memory solutions with enhanced feature sets.

Substiute Parts

PIC16C770-I/P

Microchip TechnologyIn Stock: 1972PIC16C770-I/P Datasheet

Current PartRFQ

PIC16F819-I/P

Microchip TechnologyIn Stock: 80335PIC16F819-I/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIC16C770-I/P is determined by the following critical parameters:

• Core Processor Architecture: Must be PIC family to maintain instruction set compatibility
• Core Size: Must remain 8-Bit
• Operating Speed: Must support 20MHz operation
• Program Memory Capacity: Must provide minimum 4.6KB (2K x 14) storage
• Voltage Supply Range: Must operate within 4V ~ 5.5V
• Operating Temperature Range: Must support -40°C ~ 85°C
• Mounting Type: Through Hole compatibility required
• RoHS Compliance: Must maintain ROHS3 compliance status

The PIC16F819-I/P qualifies as a substitute based on matching all critical parameters while offering flash-based reprogrammable memory instead of OTP, enhanced I/O capability, and integrated EEPROM functionality.

Parameter Comparison

Engineering Selection Recommendations

The PIC16F819-I/P serves as a direct functional substitute for the PIC16C770-I/P based on matching core architecture, processing speed, memory capacity, voltage supply range, and operating temperature specifications. Both devices maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment.

Key distinctions between the devices are:

• Memory Technology: The PIC16F819-I/P employs FLASH memory, enabling in-circuit reprogramming and field updates, whereas the PIC16C770-I/P uses OTP memory with single-programming capability
• Package Configuration: The PIC16F819-I/P uses an 18-DIP package versus the 20-DIP package of the PIC16C770-I/P, resulting in two fewer I/O pins (16 versus 15) and reduced pin count
• Data Converter Specifications: The PIC16C770-I/P provides 6-channel 12-bit A/D conversion; the PIC16F819-I/P provides 5-channel 10-bit A/D conversion
• EEPROM Integration: The PIC16F819-I/P includes 256 x 8 EEPROM; the PIC16C770-I/P does not

Selection between these devices depends on application requirements for reprogrammability, pin count, analog resolution, and non-volatile data storage capability.

Frequently Asked Questions (FAQ)

Q: Can the PIC16F819-I/P directly replace the PIC16C770-I/P in existing designs?

A: Functional substitution is possible if the application does not require all 20 pins of the original device. The PIC16F819-I/P operates at identical speed and voltage specifications with equivalent core architecture. Pin mapping differences must be evaluated during design integration.

Q: What are the primary advantages of the PIC16F819-I/P over the PIC16C770-I/P?

A: The PIC16F819-I/P offers FLASH memory for multiple reprogramming cycles, integrated EEPROM for non-volatile data storage, and one additional I/O pin. These features enable field updates and enhanced data persistence without requiring device replacement.

Q: Are there compatibility concerns with the package transition from 20-DIP to 18-DIP?

A: Package transition requires PCB layout modification and pin assignment verification. The 18-DIP footprint is physically smaller and contains two fewer pins. Existing through-hole socket designs for 20-DIP packages will not accommodate the 18-DIP device without adapter solutions.

Q: Do both devices support identical communication protocols?

A: Yes. Both the PIC16C770-I/P and PIC16F819-I/P support I2C and SPI connectivity with identical peripheral feature sets including Brown-out Detect/Reset, Power-On Reset (POR), PWM, and Watchdog Timer (WDT).

Q: What is the significance of the A/D converter differences?

A: The PIC16C770-I/P provides 6-channel 12-bit analog-to-digital conversion, while the PIC16F819-I/P provides 5-channel 10-bit conversion. Applications requiring higher resolution or additional analog channels must retain the original device or select alternative parts with matching specifications.

Q: Are regulatory certifications equivalent between these devices?

A: Yes. Both devices maintain ROHS3 compliance, REACH unaffected status, and identical ECCN (EAR99) and HTSUS (8542.31.0001) classifications, ensuring equivalent regulatory standing for procurement and deployment.