ATTINY13A-SHR Equivalent & Substitute Parts

Part Overview

The ATTINY13A-SHR is an 8-bit AVR microcontroller manufactured by Microchip Technology, designed for embedded applications requiring low-power operation and minimal I/O requirements. This device features 1KB of FLASH program memory, 64 bytes of EEPROM, and 64 bytes of RAM, operating at speeds up to 20MHz across a supply voltage range of 1.8V to 5.5V.

The ATTINY13A-SHR carries an Obsolete product status. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this microcontroller.

Key Parameters

Parameter	Value
Core Processor	AVR
Core Size	8-Bit
Speed	20MHz
Program Memory Size	1KB (512 x 16)
Program Memory Type	FLASH
EEPROM Size	64 x 8
RAM Size	64 x 8
Voltage - Supply (Vcc/Vdd)	1.8V ~ 5.5V
Number of I/O	6
Data Converters	A/D 4x10b
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT
Oscillator Type	Internal
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.209", 5.30mm Width)
Series	AVR® ATtiny
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the ATTINY13A-SHR is determined by strict equivalence across the following critical parameters:

Core Architecture: AVR processor family
Memory Configuration: 1KB FLASH, 64 bytes EEPROM, 64 bytes RAM
Operational Specifications: 20MHz maximum speed, 1.8V to 5.5V supply voltage range
I/O Capability: 6 I/O pins
Peripheral Set: Brown-out Detect/Reset, POR, PWM, WDT, 4-channel 10-bit A/D converter
Package Format: 8-SOIC surface mount package with 0.209" (5.30mm) width
Compliance: ROHS3 compliance and EAR99 ECCN classification

The ATTINY13A-SUR meets all these criteria and is classified as a direct manufacturer substitute for the ATTINY13A-SHR.

Parameter Comparison

Parameter	ATTINY13A-SHR	ATTINY13A-SUR
Manufacturer	Microchip Technology	Microchip Technology
Series	AVR® ATtiny	AVR® ATtiny
Core Processor	AVR	AVR
Core Size	8-Bit	8-Bit
Speed	20MHz	20MHz
Program Memory Size	1KB (512 x 16)	1KB (512 x 16)
Program Memory Type	FLASH	FLASH
EEPROM Size	64 x 8	64 x 8
RAM Size	64 x 8	64 x 8
Voltage - Supply (Vcc/Vdd)	1.8V ~ 5.5V	1.8V ~ 5.5V
Number of I/O	6	6
Data Converters	A/D 4x10b	A/D 4x10b
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT	Brown-out Detect/Reset, POR, PWM, WDT
Oscillator Type	Internal	Internal
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Surface Mount
Package / Case	8-SOIC (0.209", 5.30mm Width)	8-SOIC (0.209", 5.30mm Width)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99
Product Status	Obsolete	Active
Moisture Sensitivity Level (MSL)	6 (Time on Label)	2 (1 Year)

Engineering Selection Recommendations

The ATTINY13A-SUR is the direct substitute for the ATTINY13A-SHR. Both devices are manufactured by Microchip Technology and share identical electrical and mechanical specifications across all functional parameters.

The primary distinction between these parts is product lifecycle status: the ATTINY13A-SHR is classified as Obsolete, while the ATTINY13A-SUR maintains Active status. This difference reflects manufacturing availability and long-term supply chain viability.

Both parts maintain ROHS3 compliance and EAR99 ECCN classification, satisfying regulatory and export requirements. The ATTINY13A-SUR demonstrates improved moisture sensitivity characteristics (MSL 2 versus MSL 6), indicating enhanced handling and storage stability under standard industrial conditions.

For new designs or ongoing production requiring this microcontroller family, the ATTINY13A-SUR is the appropriate selection due to its active product status and superior moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Are ATTINY13A-SHR and ATTINY13A-SUR pin-compatible?

A: Yes. Both devices utilize the 8-SOIC package format with identical pinout, electrical characteristics, and functional specifications. Direct substitution is possible without circuit modification.

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

A: The suffix designates the packaging reel format. The ATTINY13A-SHR uses Cut Tape (CT) & Digi-Reel® packaging, while the ATTINY13A-SUR uses the same packaging format. Both are surface mount 8-SOIC packages with 0.209" (5.30mm) width. The functional microcontroller die and electrical performance are identical.

Q: Why is ATTINY13A-SHR marked as Obsolete?

A: Obsolete status indicates that Microchip Technology has discontinued active manufacturing and support for this specific part number variant. The ATTINY13A-SUR remains in active production and is the recommended replacement for supply chain continuity.

Q: Can I use ATTINY13A-SUR in place of ATTINY13A-SHR in existing designs?

A: Yes. The ATTINY13A-SUR is a direct functional equivalent with identical electrical specifications, memory configuration, I/O count, and peripheral set. No design changes are required for substitution.

Q: What is the significance of the Moisture Sensitivity Level (MSL) difference?

A: ATTINY13A-SHR carries MSL 6 (Time on Label), requiring immediate use after packaging opening. ATTINY13A-SUR carries MSL 2 (1 Year), allowing extended shelf life and more flexible handling procedures. This represents an improvement in component robustness and storage stability.

Q: Are both parts RoHS compliant?

A: Yes. Both ATTINY13A-SHR and ATTINY13A-SUR are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic components.

Q: What is the operating temperature range for both parts?

A: Both devices operate across -40°C to 85°C (TA), supporting industrial and extended temperature applications.

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