ATXMEGA128D4-M7 Equivalent & Substitute Parts

Part Overview

The ATXMEGA128D4-M7 is an AVR XMEGA D4 series microcontroller manufactured by Microchip Technology, featuring 8/16-bit processing at 32MHz with 128KB FLASH memory. This device is classified as Obsolete, which necessitates identification of active equivalent parts for ongoing design support and procurement continuity. The substitute part maintains identical electrical and mechanical specifications while offering current product status and availability.

Key Parameters

Parameter	Value
Core Processor	AVR
Core Size	8/16-Bit
Speed	32MHz
Program Memory Size	128KB (64K x 16)
Program Memory Type	FLASH
EEPROM Size	2K x 8
RAM Size	8K x 8
Voltage Supply (Vcc/Vdd)	1.6V ~ 3.6V
Data Converters	A/D 12x12b
Number of I/O	34
Connectivity	I2C, IrDA, SPI, UART/USART
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT
Operating Temperature	-40°C ~ 105°C (TA)
Mounting Type	Surface Mount
Package	44-VQFN (7x7)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)

Substitute Part Grouping Explanation

The ATXMEGA128D4-MNR qualifies as a parametric equivalent to the ATXMEGA128D4-M7 based on strict alignment of the following critical parameters:

Core processor architecture (AVR)
Core size (8/16-Bit)
Operating frequency (32MHz)
Program memory capacity and type (128KB FLASH)
EEPROM and RAM specifications (2K x 8 and 8K x 8 respectively)
Supply voltage range (1.6V ~ 3.6V)
Data converter specifications (A/D 12x12b)
I/O count (34 pins)
Connectivity interfaces (I2C, IrDA, SPI, UART/USART)
Peripheral features (Brown-out Detect/Reset, POR, PWM, WDT)
Operating temperature range (-40°C ~ 105°C)
Package form factor (44-VQFN 7x7)
Environmental compliance (ROHS3)
Moisture sensitivity classification (MSL 3)

Parameter Comparison

Parameter	ATXMEGA128D4-M7	ATXMEGA128D4-MNR
Manufacturer	Microchip Technology	Microchip Technology
Series	AVR® XMEGA® D4	AVR® XMEGA® D4
Product Status	Obsolete	Active
Core Processor	AVR	AVR
Core Size	8/16-Bit	8/16-Bit
Speed	32MHz	32MHz
Program Memory Size	128KB (64K x 16)	128KB (64K x 16)
Program Memory Type	FLASH	FLASH
EEPROM Size	2K x 8	2K x 8
RAM Size	8K x 8	8K x 8
Voltage Supply (Vcc/Vdd)	1.6V ~ 3.6V	1.6V ~ 3.6V
Data Converters	A/D 12x12b	A/D 12x12b
Number of I/O	34	34
Connectivity	I2C, IrDA, SPI, UART/USART	I2C, IrDA, SPI, UART/USART
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT	Brown-out Detect/Reset, POR, PWM, WDT
Operating Temperature	-40°C ~ 105°C (TA)	-40°C ~ 105°C (TA)
Mounting Type	Surface Mount	Surface Mount
Package / Case	44-VFQFN Exposed Pad	44-VFQFN Exposed Pad
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

The ATXMEGA128D4-MNR is the direct substitute for the obsolete ATXMEGA128D4-M7. Both parts are manufactured by Microchip Technology and share identical electrical specifications, memory configurations, and package geometry. The primary distinction is product status: the ATXMEGA128D4-M7 is classified as Obsolete, while the ATXMEGA128D4-MNR maintains Active status with current manufacturing and supply chain support.

Both parts maintain ROHS3 compliance and identical environmental specifications. The ATXMEGA128D4-MNR is suitable for new designs and production continuity where the ATXMEGA128D4-M7 is no longer available. No design modifications are required for substitution, as all functional and mechanical parameters remain unchanged.

Frequently Asked Questions (FAQ)

Q: Are the ATXMEGA128D4-M7 and ATXMEGA128D4-MNR pin-compatible?

A: Yes. Both parts use the 44-VQFN (7x7) package with identical pinout, I/O configuration (34 pins), and exposed pad design. Direct PCB substitution is possible without layout modifications.

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

A: The ATXMEGA128D4-MNR is the active production equivalent of the obsolete ATXMEGA128D4-M7. All electrical specifications, memory capacity, operating parameters, and package specifications are identical. The suffix change reflects manufacturing and supply chain updates by Microchip Technology.

Q: Can I use the ATXMEGA128D4-MNR in existing designs originally specified for the ATXMEGA128D4-M7?

A: Yes. The ATXMEGA128D4-MNR is a direct functional and mechanical substitute. No firmware, software, or hardware modifications are required. The part operates within the same voltage range (1.6V ~ 3.6V), frequency (32MHz), and temperature range (-40°C ~ 105°C).

Q: Are there any compliance or certification differences?

A: Both parts maintain ROHS3 compliance and identical Moisture Sensitivity Level (MSL 3, 168 Hours). Environmental and regulatory compliance specifications are equivalent.

Q: What is the inventory status of these parts?

A: The ATXMEGA128D4-M7 is Obsolete with limited remaining inventory (1386 Pcs). The ATXMEGA128D4-MNR is Active with current production availability (1098 Pcs).

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