ATTINY13A-SH Equivalent & Substitute Parts

Part Overview

The ATTINY13A-SH is an 8-bit AVR microcontroller manufactured by Microchip Technology, featuring 1KB FLASH program memory, 64 bytes EEPROM, and 64 bytes RAM. This device operates at up to 20MHz with an internal oscillator and includes integrated peripherals such as brown-out detection, power-on reset, PWM, and watchdog timer functionality. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Manufacturer	Microchip Technology
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
Number of I/O	6
Voltage Supply (Vcc/Vdd)	1.8V ~ 5.5V
Data Converters	A/D 4x10b
Oscillator Type	Internal
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.209", 5.30mm Width)
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the ATTINY13A-SH is determined by strict equivalence across the following critical parameters:

Core processor architecture (AVR)
Core size (8-Bit)
Operating frequency (20MHz)
Program memory capacity and type (1KB FLASH)
EEPROM and RAM sizes (64 x 8 each)
I/O pin count (6)
Supply voltage range (1.8V ~ 5.5V)
Peripheral feature set (Brown-out Detect/Reset, POR, PWM, WDT)
Package type and dimensions (8-SOIC)
Compliance certifications (ROHS3, REACH Unaffected)

The ATTINY13A-SU meets all substitution criteria as a direct functional equivalent, differing only in packaging format (Tube vs. unspecified) and product status (Active vs. Obsolete).

Parameter Comparison

Parameter	ATTINY13A-SH	ATTINY13A-SU	Match
Manufacturer	Microchip Technology	Microchip Technology	✓
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	✓
Number of I/O	6	6	✓
Voltage Supply (Vcc/Vdd)	1.8V ~ 5.5V	1.8V ~ 5.5V	✓
Data Converters	A/D 4x10b	A/D 4x10b	✓
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)	✓
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT	Brown-out Detect/Reset, POR, PWM, WDT	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
REACH Status	REACH Unaffected	REACH Unaffected	✓
Product Status	Obsolete	Active	Different

Engineering Selection Recommendations

The ATTINY13A-SU is a direct functional substitute for the ATTINY13A-SH. Both devices are manufactured by Microchip Technology and share identical electrical specifications, memory configurations, peripheral sets, and package dimensions. The ATTINY13A-SU maintains active product status with ROHS3 compliance and REACH unaffected certification, providing supply continuity for applications currently using the obsolete ATTINY13A-SH.

Selection between these parts is determined by packaging and supply requirements. The ATTINY13A-SU is supplied in Tube packaging format and maintains higher inventory availability (40,016 pieces vs. 1,223 pieces), making it the preferred choice for new designs and production continuity.

Frequently Asked Questions (FAQ)

Q: Can ATTINY13A-SU replace ATTINY13A-SH in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The ATTINY13A-SU operates at the same frequency, voltage range, and temperature specifications with identical memory and peripheral configurations. Direct substitution is supported without design modification.

Q: What is the difference between ATTINY13A-SH and ATTINY13A-SU?

A: The primary difference is product status and packaging format. ATTINY13A-SH is classified as obsolete, while ATTINY13A-SU is active. ATTINY13A-SU is supplied in Tube packaging. All electrical and functional parameters are identical.

Q: Are there any compatibility concerns with the 8-SOIC package?

A: No. Both parts use the identical 8-SOIC package with 0.209" width and 5.30mm dimensions. PCB footprints, soldering procedures, and thermal characteristics are equivalent.

Q: Does the ATTINY13A-SU meet the same compliance standards?

A: Yes. The ATTINY13A-SU is ROHS3 compliant and REACH unaffected, matching the compliance profile of the ATTINY13A-SH.

Q: What is the moisture sensitivity level difference?

A: ATTINY13A-SH has MSL 1 (Unlimited), while ATTINY13A-SU has MSL 2 (1 Year). This affects storage and handling procedures but does not impact electrical performance or functionality.

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