ATTINY26-16PI Equivalent & Substitute Parts

Part Overview

The ATTINY26-16PI is an 8-bit AVR microcontroller manufactured by Microchip Technology, featuring 2KB FLASH program memory, 128 bytes EEPROM, and 128 bytes RAM. This device operates at 16MHz with a 20-PDIP through-hole package and supports integrated peripherals including brown-out detection, power-on reset, PWM, and watchdog timer functionality.

The ATTINY26-16PI is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production or maintenance requirements for legacy systems.

Key Parameters

Parameter	Value
Core Processor	AVR
Core Size	8-Bit
Speed	16MHz
Program Memory Size	2KB (1K x 16)
Program Memory Type	FLASH
EEPROM Size	128 x 8
RAM Size	128 x 8
Number of I/O	16
Voltage Supply (Vcc/Vdd)	4.5V ~ 5.5V
Data Converters	A/D 11x10b
Connectivity	USI
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT
Oscillator Type	Internal
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Through Hole
Package / Case	20-DIP (0.300", 7.62mm)
Supplier Device Package	20-PDIP

Substitute Part Grouping Explanation

Substitution of the ATTINY26-16PI 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: 16MHz
I/O Count: 16 pins
Voltage Range: 4.5V ~ 5.5V
Package Type: 20-PDIP through-hole configuration
Peripheral Set: Brown-out Detect/Reset, POR, PWM, WDT, USI connectivity, 11x10-bit A/D converters

The ATTINY26-16PU meets all electrical and mechanical substitution criteria. Both parts share identical core specifications, memory architecture, and peripheral functionality. The primary distinction is packaging format and product status.

Parameter Comparison

Parameter	ATTINY26-16PI	ATTINY26-16PU	Match
Manufacturer	Microchip Technology	Microchip Technology	✓
Core Processor	AVR	AVR	✓
Core Size	8-Bit	8-Bit	✓
Speed	16MHz	16MHz	✓
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	✓
Number of I/O	16	16	✓
Voltage Supply (Vcc/Vdd)	4.5V ~ 5.5V	4.5V ~ 5.5V	✓
Data Converters	A/D 11x10b	A/D 11x10b	✓
Connectivity	USI	USI	✓
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	Through Hole	Through Hole	✓
Package / Case	20-DIP (0.300", 7.62mm)	20-DIP (0.300", 7.62mm)	✓
Supplier Device Package	20-PDIP	20-PDIP	✓
Product Status	Obsolete	Active	—
RoHS Status	RoHS non-compliant	ROHS3 Compliant	—

Engineering Selection Recommendations

The ATTINY26-16PU is a direct functional equivalent to the ATTINY26-16PI. Both devices are pin-compatible and electrically identical across all specified parameters.

Product Status Consideration: The ATTINY26-16PI is obsolete, while the ATTINY26-16PU maintains active product status with verified availability. Selection of the ATTINY26-16PU ensures access to current manufacturing stock and ongoing supplier support.

Compliance Consideration: The ATTINY26-16PU is ROHS3 compliant, whereas the ATTINY26-16PI is RoHS non-compliant. For applications subject to RoHS regulatory requirements, the ATTINY26-16PU is the appropriate selection.

Packaging Format: Both parts utilize identical 20-PDIP through-hole packaging. No PCB layout modifications are required for substitution.

Frequently Asked Questions (FAQ)

Q: Are ATTINY26-16PI and ATTINY26-16PU pin-compatible?

A: Yes. Both devices use the 20-PDIP package with identical pin assignments, voltage specifications, and electrical characteristics. Direct PCB substitution is possible without layout changes.

Q: What is the difference between the PI and PU package designations?

A: The PI designation indicates plastic DIP packaging with lead-free finish, while PU indicates plastic DIP with standard lead finish. Both are 20-PDIP through-hole packages with identical mechanical dimensions (0.300", 7.62mm).

Q: Can I use ATTINY26-16PU in a design originally specified for ATTINY26-16PI?

A: Yes. The ATTINY26-16PU is electrically and mechanically equivalent. All functional parameters, memory configuration, operating voltage, temperature range, and peripheral functionality are identical.

Q: Why is the ATTINY26-16PI listed as obsolete?

A: The ATTINY26-16PI has been discontinued by Microchip Technology. The ATTINY26-16PU remains in active production and is the current recommended part for new designs and ongoing production requirements.

Q: Are there RoHS compliance differences between these parts?

A: Yes. The ATTINY26-16PU is ROHS3 compliant, while the ATTINY26-16PI is RoHS non-compliant. For applications requiring RoHS certification, the ATTINY26-16PU must be selected.

Q: What is the inventory status of each part?

A: The ATTINY26-16PI has 2,200 pieces available. The ATTINY26-16PU has 5,000,300 pieces available, indicating significantly higher stock levels and supply continuity.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message