C8051F005R Equivalent & Substitute Parts

Part Overview

The C8051F005R is an 8-bit microcontroller from Silicon Labs' C8051F00x series, featuring a 25MHz 8051 core with 32KB FLASH program memory and integrated peripherals including SMBus, SPI, and UART connectivity. The part is classified as Obsolete, making equivalent and substitute parts necessary for ongoing system support, maintenance, and component sourcing in production environments.

Key Parameters

Parameter	Value
Manufacturer	Silicon Labs
Core Processor	8051
Core Size	8-Bit
Speed	25MHz
Program Memory Size	32KB (32K x 8) FLASH
RAM Size	2.25K x 8
Voltage Supply (Vcc/Vdd)	2.7V ~ 3.6V
Data Converters	A/D 8x12b, D/A 2x12b
Connectivity	SMBus (2-Wire/I2C), SPI, UART/USART
Peripherals	Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number of I/O	32
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 of the C8051F005R is determined by strict equivalence across the following electrical and mechanical parameters:

Core Architecture: 8051 processor family
Memory Configuration: 32KB FLASH program memory, 2.25K x 8 RAM
Clock Speed: 25MHz operation
Supply Voltage: 2.7V ~ 3.6V range
Peripheral Set: SMBus, SPI, UART/USART, PWM, temperature sensor, watchdog timer
I/O Count: 32 I/O pins
Package: 64-TQFP (10x10) surface mount
Temperature Range: -40°C ~ 85°C

The C8051F005-GQ meets all these criteria as a direct manufacturer equivalent within the same C8051F00x series, differing only in packaging format (Tray vs. standard) and compliance certifications.

Parameter Comparison

Parameter	C8051F005R	C8051F005-GQ
Manufacturer	Silicon Labs	Silicon Labs
Series	C8051F00x	C8051F00x
Core Processor	8051	8051
Core Size	8-Bit	8-Bit
Speed	25MHz	25MHz
Program Memory Size	32KB (32K x 8) FLASH	32KB (32K x 8) FLASH
RAM Size	2.25K x 8	2.25K x 8
Voltage Supply (Vcc/Vdd)	2.7V ~ 3.6V	2.7V ~ 3.6V
Data Converters	A/D 8x12b, D/A 2x12b	A/D 8x12b, D/A 2x12b
Connectivity	SMBus (2-Wire/I2C), SPI, UART/USART	SMBus (2-Wire/I2C), SPI, UART/USART
Peripherals	Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT	Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number of I/O	32	32
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	64-TQFP (10x10)	64-TQFP (10x10)
Mounting Type	Surface Mount	Surface Mount
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)
Product Status	Obsolete	Not For New Designs
RoHS Status	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

The C8051F005-GQ is a direct functional equivalent to the C8051F005R. Both parts share identical electrical specifications, memory configuration, peripheral set, and package format. Selection between these parts should be based on the following factors:

Product Status: The C8051F005R is classified as Obsolete, while the C8051F005-GQ is marked as Not For New Designs. For legacy system maintenance and repair, either part is functionally suitable. For new product development, neither part is recommended due to their discontinued status.

Compliance: The C8051F005-GQ carries ROHS3 compliance and REACH Unaffected status, whereas the C8051F005R is RoHS non-compliant. Systems requiring regulatory compliance should prioritize the C8051F005-GQ.

Packaging: The C8051F005-GQ is supplied in Tray packaging, while the C8051F005R uses standard packaging. This distinction affects handling, storage, and integration into automated assembly processes but does not impact electrical or mechanical compatibility.

Programmability Verification: The C8051F005-GQ has verified programmability status through DiGi-Electronics, providing additional assurance for development and production programming operations.

Frequently Asked Questions (FAQ)

Q: Can the C8051F005-GQ be used as a direct replacement for the C8051F005R?

A: Yes. Both parts are electrically and mechanically identical within the C8051F00x series. They share the same 8051 core, 25MHz clock speed, 32KB FLASH memory, 2.25K x 8 RAM, peripheral set, I/O count, and 64-TQFP package. No circuit modifications are required for substitution.

Q: What is the difference between these two part numbers?

A: The primary differences are packaging format (Tray vs. standard), product status classification (Obsolete vs. Not For New Designs), and compliance certifications (RoHS non-compliant vs. ROHS3 Compliant). Electrical and functional specifications are identical.

Q: Are there any pin compatibility concerns?

A: No. Both parts use the 64-TQFP (10x10) package with identical pin assignments, voltage levels, and I/O configurations. PCB layout and footprints are interchangeable.

Q: Which part should be selected for new designs?

A: Neither part is recommended for new designs. Both are classified as obsolete or not for new designs. Alternative current-generation microcontrollers from Silicon Labs should be evaluated for new product development.

Q: Does the RoHS compliance difference affect compatibility?

A: RoHS compliance affects regulatory and environmental requirements but does not impact electrical or functional compatibility. Selection should be based on system compliance requirements and regional regulations.

Q: Are the supply voltage and operating temperature ranges identical?

A: Yes. Both parts operate at 2.7V ~ 3.6V supply voltage and -40°C ~ 85°C operating temperature range. Thermal and power supply design considerations are identical.

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