STM8AF5288TC Equivalent & Substitute Parts

Part Overview

The STM8AF5288TC is an 8-bit microcontroller from STMicroelectronics belonging to the STM8A series. This device integrates a 24MHz STM8A core processor with 64KB FLASH program memory, 6KB RAM, and 2KB EEPROM. The microcontroller features multiple communication interfaces including CANbus, I2C, LINbus, SPI, and UART/USART, along with integrated analog-to-digital conversion (10x10-bit), PWM, watchdog timer, and brown-out detection. The STM8AF5288TC is packaged in a 48-pin LQFP (7x7mm) surface-mount configuration and is qualified to automotive grade AEC-Q100 standards with an operating temperature range of -40°C to 125°C.

The STM8AF5288TC carries an Obsolete product status, indicating that this part is no longer in active production. Identifying equivalent and substitute parts is necessary for design continuity, legacy system maintenance, and procurement of replacement inventory for existing applications.

Key Parameters

Parameter	Value
Core Processor	STM8A
Core Size	8-Bit
Speed	24MHz
Program Memory Size	64KB (64K x 8)
Program Memory Type	FLASH
RAM Size	6K x 8
EEPROM Size	2K x 8
Voltage Supply Range	3V ~ 5.5V
Number of I/O	38
Data Converters	A/D 10x10b
Connectivity	CANbus, I2C, LINbus, SPI, UART/USART
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT
Operating Temperature	-40°C ~ 125°C
Package Type	48-LQFP (7x7mm)
Grade	Automotive
Qualification	AEC-Q100
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the STM8AF5288TC is determined by strict equivalence across all electrical and mechanical parameters. The substitute part must maintain identical specifications for core processor architecture, memory configuration, operating voltage range, temperature rating, package form factor, and automotive qualification status.

The STM8AF5288TC has one parametric equivalent substitute: STM8AF5288TCY. This substitute relationship is based on the following critical parameters:

Identical STM8A core processor and 8-bit architecture
Matching 24MHz clock speed
Identical 64KB FLASH, 6KB RAM, and 2KB EEPROM memory configuration
Identical 38 I/O pin count
Matching 3V to 5.5V supply voltage range
Identical 10x10-bit analog-to-digital converter specification
Identical connectivity interfaces (CANbus, I2C, LINbus, SPI, UART/USART)
Identical peripheral feature set (brown-out detection, POR, PWM, WDT)
Identical -40°C to 125°C operating temperature range
Identical 48-LQFP (7x7mm) package configuration
Automotive grade with AEC-Q100 qualification
ROHS3 compliance and identical moisture sensitivity level

The only difference between these parts is the packaging format: STM8AF5288TC is supplied in tube packaging, while STM8AF5288TCY is supplied in tray packaging. This distinction affects only the delivery and handling method, not the electrical or functional characteristics of the microcontroller.

Parameter Comparison

Parameter	STM8AF5288TC	STM8AF5288TCY	Match
Manufacturer	STMicroelectronics	STMicroelectronics	Yes
Series	STM8A	STM8A	Yes
Core Processor	STM8A	STM8A	Yes
Core Size	8-Bit	8-Bit	Yes
Speed	24MHz	24MHz	Yes
Program Memory Size	64KB (64K x 8)	64KB (64K x 8)	Yes
Program Memory Type	FLASH	FLASH	Yes
RAM Size	6K x 8	6K x 8	Yes
EEPROM Size	2K x 8	2K x 8	Yes
Voltage Supply Range	3V ~ 5.5V	3V ~ 5.5V	Yes
Number of I/O	38	38	Yes
Data Converters	A/D 10x10b	A/D 10x10b	Yes
Connectivity	CANbus, I2C, LINbus, SPI, UART/USART	CANbus, I2C, LINbus, SPI, UART/USART	Yes
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT	Brown-out Detect/Reset, POR, PWM, WDT	Yes
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	Yes
Package Type	48-LQFP (7x7mm)	48-LQFP (7x7mm)	Yes
Grade	Automotive	Automotive	Yes
Qualification	AEC-Q100	AEC-Q100	Yes
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Yes
Moisture Sensitivity Level	3 (168 Hours)	3 (168 Hours)	Yes
Packaging Format	Tube	Tray	Different
Product Status	Obsolete	Not For New Designs	Different

Engineering Selection Recommendations

The STM8AF5288TC and STM8AF5288TCY are parametric equivalents with identical electrical and functional specifications. Both devices are automotive-grade microcontrollers qualified to AEC-Q100 standards and maintain full compliance with ROHS3 environmental regulations.

The STM8AF5288TC carries an Obsolete product status, indicating end-of-life status with no further production planned. The STM8AF5288TCY carries a Not For New Designs status, indicating limited availability and unsuitability for new product development.

For applications requiring the STM8A microcontroller architecture with 64KB FLASH memory and automotive qualification, the STM8AF5288TCY is the direct electrical substitute for the STM8AF5288TC. The selection between these parts is determined by packaging requirements: tube packaging for the TC variant or tray packaging for the TCY variant. Both parts are suitable for drop-in replacement in existing designs where the STM8AF5288TC was originally specified, provided that the packaging format is compatible with assembly and procurement workflows.

Frequently Asked Questions (FAQ)

Q: Are the STM8AF5288TC and STM8AF5288TCY electrically identical?

A: Yes. Both parts share identical electrical specifications, including core processor, clock speed, memory configuration, I/O count, voltage range, temperature rating, and peripheral features. The only difference is the packaging format (tube versus tray).

Q: Can the STM8AF5288TCY be used as a direct replacement for the STM8AF5288TC?

A: Yes, the STM8AF5288TCY is a direct parametric equivalent and can be used as a drop-in replacement in applications where the STM8AF5288TC was originally specified. Verify that the tray packaging format is compatible with your assembly and handling processes.

Q: What is the difference between tube and tray packaging?

A: Tube packaging delivers components in a plastic tube, typically used for lower-volume orders or manual assembly. Tray packaging delivers components in a plastic tray, typically used for higher-volume automated assembly. Both packaging formats contain the same microcontroller with identical electrical characteristics.

Q: Why is the STM8AF5288TC marked as Obsolete?

A: The Obsolete status indicates that STMicroelectronics has discontinued production of this part number. No further inventory will be manufactured. The STM8AF5288TCY, marked as Not For New Designs, represents the final available variant of this microcontroller configuration.

Q: Are both parts suitable for automotive applications?

A: Yes. Both the STM8AF5288TC and STM8AF5288TCY are automotive-grade microcontrollers qualified to AEC-Q100 standards and operate across the -40°C to 125°C temperature range required for automotive environments.

Q: What is the moisture sensitivity level, and why does it matter?

A: Both parts have a Moisture Sensitivity Level (MSL) of 3, which allows 168 hours of exposure to ambient conditions (30°C, 60% relative humidity) before the component must be baked prior to soldering. This specification is critical for managing component storage and assembly processes.

Q: Are there any other STM8A microcontrollers that could serve as alternatives?

A: Substitution is limited to parts with identical electrical and mechanical parameters. Only the STM8AF5288TCY meets the strict equivalence criteria for the STM8AF5288TC. Other STM8A variants with different memory configurations, I/O counts, or package types are not direct substitutes.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant and REACH unaffected. Both carry automotive-grade qualification with AEC-Q100 certification, suitable for use in automotive and industrial applications requiring environmental compliance.

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