ATTINY26-16PC Equivalent & Substitute Parts

Part Overview

The ATTINY26-16PC is an 8-bit AVR microcontroller from Microchip Technology's ATtiny series, featuring 2KB FLASH program memory, 128 bytes EEPROM, and 128 bytes RAM. Designed for embedded applications requiring low-cost, compact processing capabilities, this device integrates 16 I/O pins, PWM functionality, and brown-out detection in a 20-DIP package.

The ATTINY26-16PC carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for legacy systems and new designs requiring compatible alternatives.

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
Mounting Type	Through Hole
Package / Case	20-DIP (0.300", 7.62mm)
Supplier Device Package	20-PDIP

Substitute Part Grouping Explanation

Substitution of the ATTINY26-16PC 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
Supply Voltage Range: 4.5V ~ 5.5V
Package Type: 20-DIP through-hole form factor
Peripheral Set: USI connectivity, PWM, WDT, brown-out detection

The ATTINY26-16PU qualifies as a direct substitute based on identical electrical specifications, memory architecture, pin configuration, and functional peripherals. Both parts share the same base product number (ATTINY26) and operate within the same voltage and frequency parameters. The primary distinction lies in packaging format (tube vs. unspecified for the main part) and product lifecycle status.

Parameter Comparison

Parameter	ATTINY26-16PC	ATTINY26-16PU
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
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
Operating Temperature	0°C ~ 70°C (TA)	-40°C ~ 85°C (TA)
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

The ATTINY26-16PU is the direct functional equivalent of the ATTINY26-16PC. Both devices share identical electrical specifications, memory architecture, and peripheral functionality, ensuring pin-for-pin and code-level compatibility.

Selection between these parts should be based on the following criteria:

ATTINY26-16PU is preferred for new designs and ongoing production due to its active product status, extended operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C), and ROHS3 compliance. The wider temperature specification provides greater design margin for industrial and extended-temperature applications.

ATTINY26-16PC may be retained for legacy systems where existing inventory exists and design validation has been completed. However, the obsolete status and RoHS non-compliance status should be considered in long-term supply chain planning.

Both parts are functionally interchangeable at the circuit level. No design modifications are required when transitioning from ATTINY26-16PC to ATTINY26-16PU.

Frequently Asked Questions (FAQ)

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

A: Yes. Both devices use the 20-DIP package with identical pin assignments, voltage levels, and signal definitions. Direct socket substitution is possible without PCB modification.

Q: Can firmware written for ATTINY26-16PC run on ATTINY26-16PU without modification?

A: Yes. Both microcontrollers share the same AVR core architecture, instruction set, memory organization, and peripheral register definitions. Firmware compiled for one device executes identically on the other.

Q: What is the difference between the ATTINY26-16PC and ATTINY26-16PU package designations?

A: The suffix designates packaging format. The "C" indicates ceramic DIP packaging, while "U" indicates plastic DIP packaging in tube format. Both use the same 20-DIP physical form factor and are functionally equivalent.

Q: Why does ATTINY26-16PU have a wider operating temperature range?

A: The ATTINY26-16PU is specified for -40°C ~ 85°C, while ATTINY26-16PC is specified for 0°C ~ 70°C. This reflects different qualification and testing protocols. The ATTINY26-16PU's extended range makes it suitable for industrial and automotive applications.

Q: Is ATTINY26-16PU RoHS compliant?

A: Yes. ATTINY26-16PU is ROHS3 compliant. ATTINY26-16PC is RoHS non-compliant. For applications requiring RoHS compliance, ATTINY26-16PU is the appropriate selection.

Q: What is the inventory status of these parts?

A: ATTINY26-16PC is obsolete with limited inventory (1096 pcs). ATTINY26-16PU is active with substantial inventory availability (5000300 pcs). For new designs and long-term supply assurance, ATTINY26-16PU is recommended.

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