C8051F061R Equivalent & Substitute Parts

Part Overview

The C8051F061R is an 8-bit microcontroller from Silicon Labs' C8051F06x series, featuring a 25MHz 8051 core with 64KB Flash memory and integrated analog/digital conversion capabilities. This device is classified as Obsolete, making equivalent and substitute parts necessary for ongoing production support, maintenance, and new design considerations where legacy compatibility is required.

Key Parameters

Parameter	Value
Core Processor	8051
Core Size	8-Bit
Speed	25MHz
Program Memory Type	FLASH
Program Memory Size	64KB (64K x 8)
RAM Size	4.25K x 8
Voltage Supply (Vcc/Vdd)	2.7V ~ 3.6V
Number of I/O	24
Connectivity	CANbus, SMBus (2-Wire/I2C), SPI, UART/USART
Data Converters	A/D 2x16b, 8x10b; D/A 2x12b
Peripherals	Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	64-TQFP (10x10)
Mounting Type	Surface Mount
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution for the C8051F061R is determined by strict equivalence across the following critical parameters:

Core Architecture: 8051 processor family
Memory Configuration: 64KB Flash, 4.25K x 8 RAM
Operating Frequency: 25MHz
Supply Voltage Range: 2.7V ~ 3.6V
I/O Count: 24 pins
Peripheral Set: CANbus, SMBus, SPI, UART/USART, PWM, temperature sensor, watchdog timer
Data Conversion: A/D 2x16b, 8x10b; D/A 2x12b
Package: 64-TQFP (10x10)
Thermal Range: -40°C ~ 85°C

The C8051F061-GQ meets all these criteria and is therefore a direct functional equivalent. Differences exist only in packaging format (Tray vs. standard packaging) and product lifecycle status.

Parameter Comparison

Parameter	C8051F061R	C8051F061-GQ
Manufacturer	Silicon Labs	Silicon Labs
Series	C8051F06x	C8051F06x
Core Processor	8051	8051
Core Size	8-Bit	8-Bit
Speed	25MHz	25MHz
Program Memory Size	64KB (64K x 8)	64KB (64K x 8)
RAM Size	4.25K x 8	4.25K x 8
Voltage Supply	2.7V ~ 3.6V	2.7V ~ 3.6V
Number of I/O	24	24
Connectivity	CANbus, SMBus, SPI, UART/USART	CANbus, SMBus, SPI, UART/USART
Data Converters	A/D 2x16b, 8x10b; D/A 2x12b	A/D 2x16b, 8x10b; D/A 2x12b
Peripherals	Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT	Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	64-TQFP (10x10)	64-TQFP (10x10)
Mounting Type	Surface Mount	Surface Mount
MSL Rating	3 (168 Hours)	3 (168 Hours)
Product Status	Obsolete	Not For New Designs
RoHS Status	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

The C8051F061-GQ is a direct functional substitute for the C8051F061R across all electrical and mechanical parameters. Selection between these parts should be based on the following factors:

For Existing Designs: The C8051F061-GQ maintains full compatibility with designs originally specified for the C8051F061R. Both parts share identical core functionality, memory configuration, I/O count, and thermal operating range.

Compliance Considerations: The C8051F061-GQ carries ROHS3 compliance certification, whereas the C8051F061R is RoHS non-compliant. For applications subject to RoHS regulations, the C8051F061-GQ is the appropriate selection.

Product Lifecycle: The C8051F061R is classified as Obsolete. The C8051F061-GQ is classified as Not For New Designs. For new development, alternative microcontroller families from Silicon Labs should be evaluated. For legacy system support and maintenance, the C8051F061-GQ provides continued availability.

Packaging: The C8051F061-GQ is supplied in Tray packaging. Verify packaging compatibility with assembly and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can the C8051F061-GQ be used as a direct replacement for the C8051F061R?

A: Yes. The C8051F061-GQ is electrically and mechanically equivalent to the C8051F061R. All core specifications, memory configuration, I/O count, peripheral set, and thermal ratings are identical. No design modifications are required for substitution.

Q: What is the difference between these two parts?

A: The primary differences are product lifecycle status and RoHS compliance. The C8051F061R is Obsolete and RoHS non-compliant. The C8051F061-GQ is Not For New Designs and ROHS3 Compliant. Functionally, both parts are identical.

Q: Are there any pin compatibility issues?

A: No. Both parts use the 64-TQFP (10x10) package with 24 I/O pins. Pin assignments and functionality are identical.

Q: What is the MSL rating, and why does it matter?

A: Both parts carry an MSL rating of 3 (168 Hours). This indicates the maximum time the component can be exposed to moisture at specified temperature and humidity conditions before soldering. Proper storage and handling procedures must be followed to maintain component integrity.

Q: Should new designs use the C8051F061-GQ?

A: No. The C8051F061-GQ is classified as Not For New Designs. For new development, alternative microcontroller solutions from Silicon Labs should be evaluated to ensure long-term product support and availability.

Q: Is the C8051F061-GQ available in stock?

A: Inventory status is subject to change. Verify current availability with your component supplier before finalizing procurement decisions.

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