AT89C51CC03C-S3SIM Equivalent & Substitute Parts

Part Overview

The AT89C51CC03C-S3SIM is an 8-bit microcontroller from Microchip Technology's AT89C CAN series, featuring 64KB FLASH program memory, 2.25KB RAM, and integrated CANbus connectivity. This device operates at 40MHz with a supply voltage range of 3V to 5.5V and is housed in a 52-PLCC package.

The AT89C51CC03C-S3SIM carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term production requirements.

Key Parameters

Parameter	Value
Core Processor	80C51
Core Size	8-Bit
Speed	40MHz
Program Memory Size	64KB (64K x 8)
Program Memory Type	FLASH
EEPROM Size	2K x 8
RAM Size	2.25K x 8
Voltage Supply (Vcc/Vdd)	3V ~ 5.5V
Connectivity	CANbus, SPI, UART/USART
Peripherals	POR, PWM, WDT
Number of I/O	36
Data Converters	A/D 8x10b
Oscillator Type	External
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	52-LCC (J-Lead)
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitute parts for the AT89C51CC03C-S3SIM are identified based on strict parameter equivalence across the following criteria:

Core Electrical Parameters: Processor architecture (80C51), core size (8-Bit), clock speed (40MHz), program memory capacity and type (64KB FLASH), EEPROM size (2K x 8), and RAM size (2.25K x 8) must remain identical.

Connectivity & Peripherals: CANbus, SPI, and UART/USART interfaces, along with POR, PWM, and WDT peripherals, must be present.

Power & Environmental Specifications: Supply voltage range (3V ~ 5.5V), operating temperature range (-40°C ~ 85°C), and data converter specifications (A/D 8x10b) must match.

Physical Compatibility: All substitutes must use the same 52-PLCC (19.15x19.15) package with 52-LCC (J-Lead) case configuration and identical MSL rating (3, 168 Hours).

Substitutes identified:

AT89C51CC03CA-S3SUM (Direct Manufacturer Substitute)
AT89C51CC03UA-S3SUM (Parametric Equivalent)

Parameter Comparison

Parameter	AT89C51CC03C-S3SIM	AT89C51CC03CA-S3SUM	AT89C51CC03UA-S3SUM
Manufacturer	Microchip Technology	Microchip Technology	Microchip Technology
Product Status	Obsolete	Active	Active
Core Processor	80C51	80C51	80C51
Core Size	8-Bit	8-Bit	8-Bit
Speed	40MHz	40MHz	40MHz
Program Memory Size	64KB (64K x 8)	64KB (64K x 8)	64KB (64K x 8)
Program Memory Type	FLASH	FLASH	FLASH
EEPROM Size	2K x 8	2K x 8	2K x 8
RAM Size	2.25K x 8	2.25K x 8	2.25K x 8
Voltage Supply (Vcc/Vdd)	3V ~ 5.5V	3V ~ 5.5V	3V ~ 5.5V
Connectivity	CANbus, SPI, UART/USART	CANbus, SPI, UART/USART	CANbus, SPI, UART/USART
Peripherals	POR, PWM, WDT	POR, PWM, WDT	POR, PWM, WDT
Number of I/O	36	36	36
Data Converters	A/D 8x10b	A/D 8x10b	A/D 8x10b
Oscillator Type	External	External	External
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	52-LCC (J-Lead)	52-LCC (J-Lead)	52-LCC (J-Lead)
Supplier Device Package	52-PLCC (19.15x19.15)	52-PLCC (19.15x19.15)	52-PLCC (19.15x19.15)
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
ECCN	3A991A2	3A991A2	3A991A2
HTSUS	8542.31.0001	8542.31.0001	8542.31.0001

Engineering Selection Recommendations

Both AT89C51CC03CA-S3SUM and AT89C51CC03UA-S3SUM are active product alternatives to the obsolete AT89C51CC03C-S3SIM, with identical electrical and mechanical specifications.

AT89C51CC03CA-S3SUM is a direct manufacturer substitute with ROHS3 compliance and tube packaging. This part is suitable for applications requiring RoHS compliance and standard production volumes.

AT89C51CC03UA-S3SUM is a parametric equivalent with ROHS3 compliance, tube packaging, and verified programmability status. This part offers the highest inventory availability (3798 units) and is recommended as the primary selection for new designs and high-volume production.

Both substitutes maintain full electrical and mechanical compatibility with the original part, supporting seamless integration into existing designs without circuit modifications.

Frequently Asked Questions (FAQ)

Q: Can AT89C51CC03CA-S3SUM and AT89C51CC03UA-S3SUM be used interchangeably with AT89C51CC03C-S3SIM?

A: Yes. Both substitutes maintain identical core processor architecture, memory configuration, clock speed, connectivity interfaces, peripheral features, power supply requirements, operating temperature range, and 52-PLCC package specifications. No circuit modifications are required.

Q: What is the difference between the two substitute parts?

A: AT89C51CC03CA-S3SUM and AT89C51CC03UA-S3SUM differ only in packaging format (both tube) and programmability verification status. AT89C51CC03UA-S3SUM carries verified programmability status and higher inventory availability.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both AT89C51CC03CA-S3SUM and AT89C51CC03UA-S3SUM are ROHS3 compliant, whereas the original AT89C51CC03C-S3SIM is RoHS non-compliant. This represents an improvement in environmental compliance for new production.

Q: Do the substitute parts require different PCB layouts or soldering profiles?

A: No. All parts use identical 52-PLCC (19.15x19.15) package dimensions with 52-LCC (J-Lead) case configuration and MSL 3 (168 Hours) moisture sensitivity rating. Existing PCB designs and assembly processes remain unchanged.

Q: Which substitute part should be selected for new designs?

A: AT89C51CC03UA-S3SUM is recommended for new designs due to active product status, ROHS3 compliance, verified programmability, and superior inventory availability.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message