ATTINY26L-8PC Equivalent & Substitute Parts

Part Overview

The ATTINY26L-8PC is an 8-bit AVR microcontroller from Microchip Technology's ATtiny series, featuring 2KB FLASH program memory, 128 bytes EEPROM, and 128 bytes RAM. This device operates at 8MHz with a supply voltage range of 2.7V to 5.5V and includes integrated peripherals such as brown-out detection, power-on reset, PWM, and watchdog timer functionality. The part is mounted in a 20-DIP package with 16 I/O pins and an internal oscillator.

The ATTINY26L-8PC is classified as obsolete. Identifying equivalent substitute parts is necessary to support legacy system maintenance, design updates, and procurement continuity when original inventory becomes unavailable.

Key Parameters

Parameter	Value
Core Processor	AVR
Core Size	8-Bit
Speed	8MHz
Program Memory Size	2KB (1K x 16)
Program Memory Type	FLASH
EEPROM Size	128 x 8
RAM Size	128 x 8
Voltage Supply (Vcc/Vdd)	2.7V ~ 5.5V
Number of I/O	16
Connectivity	USI
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT
Data Converters	A/D 11x10b
Oscillator Type	Internal
Mounting Type	Through Hole
Package / Case	20-DIP (0.300", 7.62mm)
Base Product Number	ATTINY26

Substitute Part Grouping Explanation

Substitution of the ATTINY26L-8PC is determined by strict equivalence across the following critical parameters:

Core Architecture: AVR processor family
Memory Configuration: 2KB FLASH, 128 bytes EEPROM, 128 bytes RAM
Operating Frequency: 8MHz
Supply Voltage Range: 2.7V ~ 5.5V
I/O Count: 16 pins
Peripheral Set: Brown-out Detect/Reset, POR, PWM, WDT, USI connectivity
Data Conversion: A/D 11x10b
Package Type: 20-DIP through-hole mounting

The ATTINY26L-8PU meets all these criteria and is identified as a direct substitute. The primary difference is packaging format (tube vs. DIP) and product status (active vs. obsolete), with an extended operating temperature range on the substitute part.

Parameter Comparison

Parameter	ATTINY26L-8PC	ATTINY26L-8PU
Manufacturer	Microchip Technology	Microchip Technology
Core Processor	AVR	AVR
Core Size	8-Bit	8-Bit
Speed	8MHz	8MHz
Program Memory Size	2KB (1K x 16)	2KB (1K x 16)
Program Memory Type	FLASH	FLASH
EEPROM Size	128 x 8	128 x 8
RAM Size	128 x 8	128 x 8
Voltage Supply (Vcc/Vdd)	2.7V ~ 5.5V	2.7V ~ 5.5V
Number of I/O	16	16
Connectivity	USI	USI
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT	Brown-out Detect/Reset, POR, PWM, WDT
Data Converters	A/D 11x10b	A/D 11x10b
Oscillator Type	Internal	Internal
Operating Temperature	0°C ~ 70°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Through Hole	Through Hole
Package / Case	20-DIP (0.300", 7.62mm)	20-DIP (0.300", 7.62mm)
Base Product Number	ATTINY26	ATTINY26
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

The ATTINY26L-8PU is a direct functional equivalent to the ATTINY26L-8PC. Both parts share identical core architecture, memory configuration, operating frequency, and peripheral functionality. The substitute part is currently in active production status, whereas the original part is obsolete.

The ATTINY26L-8PU offers improved compliance posture with ROHS3 certification compared to the non-compliant status of the ATTINY26L-8PC. The substitute part also provides an extended operating temperature range (-40°C to 85°C versus 0°C to 70°C), which supports operation in broader environmental conditions.

Pin-to-pin compatibility and functional equivalence are maintained across both parts. The 20-DIP package footprint is identical, enabling direct board-level substitution without layout modifications.

Frequently Asked Questions (FAQ)

Q: Are the ATTINY26L-8PC and ATTINY26L-8PU pin-compatible?

A: Yes. Both parts use the 20-DIP package with identical pinout and electrical characteristics. Direct substitution on existing PCBs is supported without modification.

Q: What is the functional difference between these two parts?

A: There is no functional difference. Both parts implement the same AVR core architecture, memory configuration, and peripheral set. The primary differences are product status (obsolete vs. active) and compliance certifications.

Q: Does the extended temperature range of the ATTINY26L-8PU affect compatibility?

A: No. The extended operating temperature range (-40°C to 85°C) of the ATTINY26L-8PU is a superset of the original part's range (0°C to 70°C). Systems designed for the original part will operate within the substitute part's specified range.

Q: Is the ATTINY26L-8PU RoHS compliant?

A: Yes. The ATTINY26L-8PU is ROHS3 compliant, whereas the ATTINY26L-8PC is RoHS non-compliant. This makes the substitute part suitable for applications with RoHS compliance requirements.

Q: Can I use the ATTINY26L-8PU in new designs?

A: Yes. The ATTINY26L-8PU is in active production status and is suitable for new designs. It provides the same functionality as the obsolete ATTINY26L-8PC with improved compliance and availability.

Q: Are there any electrical parameter differences I should consider?

A: No. Supply voltage range, I/O specifications, peripheral functionality, and all electrical parameters are identical between the two parts. No circuit modifications are required.

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