PIC16C63AT-20E/SS Equivalent & Substitute Parts

Part Overview

The PIC16C63AT-20E/SS is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 7KB OTP program memory, 22 I/O pins, and integrated peripherals including PWM, WDT, and Brown-out Detection. The device operates at 20MHz with a supply voltage range of 4V to 5.5V and is housed in a 28-SSOP surface mount package.

This part carries an Obsolete product status. Locating equivalent or substitute components is necessary for ongoing production support, design updates, or inventory replenishment when original stock becomes unavailable.

Key Parameters

Parameter	Value
Manufacturer	Microchip Technology
Core Processor	PIC
Core Size	8-Bit
Speed	20MHz
Program Memory Size	7KB (4K x 14)
Program Memory Type	OTP
RAM Size	192 x 8
Number of I/O	22
Voltage - Supply (Vcc/Vdd)	4V ~ 5.5V
Operating Temperature	-40°C ~ 125°C (TA)
Connectivity	I2C, SPI, UART/USART
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT
Mounting Type	Surface Mount
Package / Case	28-SSOP (0.209", 5.30mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16C63AT-20E/SS is determined by strict alignment of the following critical parameters:

Core Processor: PIC architecture
Core Size: 8-Bit
Speed: 20MHz
Program Memory Size: 7KB (4K x 14)
Program Memory Type: OTP
RAM Size: 192 x 8
Number of I/O: 22
Voltage - Supply (Vcc/Vdd): 4V ~ 5.5V
Connectivity: I2C, SPI, UART/USART
Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
Package / Case: 28-SSOP (0.209", 5.30mm Width)

The identified substitute parts maintain identical electrical specifications and package form factor. Differences in product status (Active vs. Obsolete), operating temperature range, and packaging format (Tube vs. standard) do not affect functional interchangeability within the specified electrical parameters.

Parameter Comparison

Parameter	PIC16C63AT-20E/SS	PIC16C63A-20E/SS	PIC16C63A-20I/SS
Manufacturer	Microchip Technology	Microchip Technology	Microchip Technology
Product Status	Obsolete	Active	Active
Core Processor	PIC	PIC	PIC
Core Size	8-Bit	8-Bit	8-Bit
Speed	20MHz	20MHz	20MHz
Program Memory Size	7KB (4K x 14)	7KB (4K x 14)	7KB (4K x 14)
Program Memory Type	OTP	OTP	OTP
RAM Size	192 x 8	192 x 8	192 x 8
Number of I/O	22	22	22
Voltage - Supply (Vcc/Vdd)	4V ~ 5.5V	4V ~ 5.5V	4V ~ 5.5V
Operating Temperature	-40°C ~ 125°C (TA)	-40°C ~ 125°C (TA)	-40°C ~ 85°C (TA)
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
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	28-SSOP (0.209", 5.30mm Width)	28-SSOP (0.209", 5.30mm Width)	28-SSOP (0.209", 5.30mm Width)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging Format	Standard	Standard	Tube

Engineering Selection Recommendations

Both PIC16C63A-20E/SS and PIC16C63A-20I/SS are functionally equivalent to the PIC16C63AT-20E/SS within the specified electrical and mechanical parameters. Selection between these alternatives is based on the following factors:

PIC16C63A-20E/SS is recommended for applications requiring the full operating temperature range of -40°C to 125°C and standard packaging. This part carries Active product status, ensuring long-term availability and supply chain stability.

PIC16C63A-20I/SS is suitable for applications with operating temperature requirements limited to -40°C to 85°C. This part is supplied in Tube packaging and maintains Active product status. Higher inventory availability (2900 Pcs) supports immediate procurement needs.

Both substitute parts maintain ROHS3 compliance and REACH Unaffected status, consistent with the original part specifications.

Frequently Asked Questions (FAQ)

Q: Can PIC16C63A-20E/SS and PIC16C63A-20I/SS be used interchangeably with PIC16C63AT-20E/SS?

A: Yes, within the constraints of operating temperature requirements. Both parts maintain identical electrical specifications, memory configuration, I/O count, and package form factor. The primary distinction is the operating temperature range: PIC16C63A-20E/SS supports -40°C to 125°C, while PIC16C63A-20I/SS supports -40°C to 85°C. Select based on your application's thermal requirements.

Q: What is the significance of the product status difference (Obsolete vs. Active)?

A: The original PIC16C63AT-20E/SS carries Obsolete status, indicating discontinued manufacturing. The substitute parts PIC16C63A-20E/SS and PIC16C63A-20I/SS are Active, meaning they are currently manufactured and supported by Microchip Technology. This ensures ongoing availability and technical support for new designs or production continuity.

Q: Does packaging format affect electrical performance?

A: No. The difference between standard packaging and Tube packaging is logistical only. Both PIC16C63A-20E/SS and PIC16C63A-20I/SS are housed in the same 28-SSOP package with identical electrical and mechanical characteristics. Tube packaging is a quantity and handling format distinction.

Q: Are there any compliance or certification differences?

A: No. All three parts maintain identical RoHS3 compliance, REACH Unaffected status, and Moisture Sensitivity Level (MSL) 1 rating. Regulatory and environmental compliance is consistent across the main part and both substitutes.

Q: Which substitute part should I select for new designs?

A: For new designs, PIC16C63A-20E/SS is the preferred selection. It provides the extended operating temperature range (-40°C to 125°C) and maintains Active product status with established supply chain support. This choice maximizes design flexibility and long-term availability.

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