PIC16LC63-04I/SO Equivalent & Substitute Parts

Part Overview

The PIC16LC63-04I/SO is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 7KB OTP program memory, 192 bytes of RAM, and 22 I/O pins. This device operates at 4MHz with a supply voltage range of 2.5V to 6V and includes integrated peripherals such as PWM, WDT, brown-out detection, and communication interfaces (I2C, SPI, UART/USART). The part is currently active in production and RoHS3 compliant.

Substitute parts are necessary when OTP memory limitations require reprogramming capability, when higher operating speeds are required, or when extended voltage range support is needed for specific application requirements.

Key Parameters

Parameter	Value
Core Processor	PIC
Core Size	8-Bit
Program Memory Type	OTP
Program Memory Size	7KB (4K x 14)
RAM Size	192 x 8
Number of I/O	22
Package / Case	28-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 85°C (TA)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16LC63-04I/SO is determined by the following critical parameters:

Core Processor & Architecture: Must be PIC processor family
Core Size: Must remain 8-Bit
Program Memory Size: Must be 7KB (4K x 14)
RAM Size: Must be 192 x 8
Number of I/O: Must be 22 pins
Package / Case: Must be 28-SOIC form factor
Mounting Type: Must be Surface Mount
Operating Temperature Range: Must support -40°C ~ 85°C (TA)
Compliance: Must maintain RoHS3 compliance

The substitute parts listed below meet all these criteria. Primary differences exist in program memory technology (FLASH vs. OTP), operating speed, and supply voltage range, which do not prevent functional substitution in applications where these enhanced capabilities are compatible.

Parameter Comparison

Parameter	PIC16LC63-04I/SO	PIC16F73-I/SO	PIC16LF73-I/SO
Manufacturer	Microchip Technology	Microchip Technology	Microchip Technology
Series	PIC® 16C	PIC® 16F	PIC® 16F
Core Processor	PIC	PIC	PIC
Core Size	8-Bit	8-Bit	8-Bit
Speed	4MHz	20MHz	20MHz
Program Memory Type	OTP	FLASH	FLASH
Program Memory Size	7KB (4K x 14)	7KB (4K x 14)	7KB (4K x 14)
RAM Size	192 x 8	192 x 8	192 x 8
Number of I/O	22	22	22
Voltage - Supply (Vcc/Vdd)	2.5V ~ 6V	4V ~ 5.5V	2V ~ 5.5V
Data Converters	—	A/D 5x8b	A/D 5x8b
Connectivity	I2C, SPI, UART/USART	I2C, SPI, UART/USART	I2C, SPI, UART/USART
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT	Brown-out Detect/Reset, POR, PWM, WDT	Brown-out Detect/Reset, POR, PWM, WDT
Package / Case	28-SOIC (0.295", 7.50mm Width)	28-SOIC (0.295", 7.50mm Width)	28-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Product Status	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Both PIC16F73-I/SO and PIC16LF73-I/SO are valid substitutes for the PIC16LC63-04I/SO based on core architecture, memory configuration, I/O count, and package compatibility. All three devices maintain active product status and RoHS3 compliance.

PIC16F73-I/SO operates within a 4V to 5.5V supply range and supports 20MHz operation. This device is suitable for applications requiring higher clock speeds within standard 5V logic environments.

PIC16LF73-I/SO operates within an extended 2V to 5.5V supply range and supports 20MHz operation. This device is suitable for applications requiring extended low-voltage operation and higher clock speeds, including battery-powered and low-power applications.

The primary distinction between the main part and substitutes is program memory technology: the PIC16LC63-04I/SO uses OTP (one-time programmable) memory, while both substitutes employ FLASH memory, enabling in-circuit reprogramming. The PIC16LF73-I/SO offers the broadest voltage compatibility and lowest moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can PIC16F73-I/SO or PIC16LF73-I/SO directly replace PIC16LC63-04I/SO in existing designs?

A: Yes, both substitutes are pin-compatible and functionally equivalent at the architectural level. The 28-SOIC package, I/O count, RAM size, and peripheral set are identical. However, verify that your application's supply voltage and clock speed requirements align with the substitute device specifications.

Q: What is the primary advantage of FLASH memory over OTP memory?

A: FLASH memory allows in-circuit reprogramming and field updates, whereas OTP memory is programmed once during manufacturing. FLASH-based devices (PIC16F73-I/SO and PIC16LF73-I/SO) provide flexibility for firmware modifications and development iterations.

Q: Which substitute should I select for low-voltage applications?

A: PIC16LF73-I/SO supports operation down to 2V, making it suitable for low-voltage and battery-powered applications. PIC16F73-I/SO requires a minimum of 4V.

Q: Are there differences in moisture sensitivity between these devices?

A: Yes. PIC16LC63-04I/SO has MSL 3 (168 hours), while both PIC16F73-I/SO and PIC16LF73-I/SO have MSL 1 (unlimited). Lower MSL ratings indicate better moisture resistance and longer shelf life without baking requirements.

Q: Do all three devices support the same communication interfaces?

A: Yes. All three devices include I2C, SPI, and UART/USART connectivity, along with identical peripheral support (PWM, WDT, brown-out detection, POR).

Q: What is the speed difference, and does it affect compatibility?

A: PIC16LC63-04I/SO operates at 4MHz, while both substitutes operate at 20MHz. Higher clock speed does not prevent substitution; applications designed for 4MHz will operate correctly at 20MHz. However, timing-critical applications must account for the increased instruction execution rate.

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