AT25XE021A-XMHN-T Equivalent & Substitute Parts

Part Overview

The AT25XE021A-XMHN-T is a 2Mbit Serial Peripheral Interface (SPI) FLASH memory IC manufactured by Renesas Electronics Corporation. This non-volatile memory device operates at 70 MHz and is housed in an 8-TSSOP surface mount package. The part is currently in active production status with 4507 units in stock. Substitute parts are necessary when the primary part becomes unavailable, when design requirements demand higher performance specifications, or when extended operating temperature ranges are required for specific applications.

Substiute Parts

AT25XE021A-XMHN-T

Renesas Electronics CorporationIn Stock: 4544AT25XE021A-XMHN-T Datasheet

Current PartRFQ

AT25DF021A-XMHN-T

Renesas Electronics CorporationIn Stock: 1683AT25DF021A-XMHN-T Datasheet

MFR RecommendedRFQ

AT25DF021A-XMHNHR-T

Renesas Electronics CorporationIn Stock: 1475AT25DF021A-XMHNHR-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT25XE021A-XMHN-T is determined by the following critical parameters:

• Memory Capacity & Organization: All substitute parts must maintain 2Mbit capacity with 256K x 8 organization to ensure software and firmware compatibility.
• Memory Interface: SPI interface is mandatory; no alternative bus protocols are acceptable.
• Package Type: 8-TSSOP surface mount package with identical footprint (0.173", 4.40mm Width) is required for PCB compatibility.
• Supply Voltage Compatibility: Substitute parts must operate within or encompass the 1.65V ~ 3.6V range of the primary part.
• Mounting Type: Surface mount technology must be maintained.

The two qualified substitute parts—AT25DF021A-XMHN-T and AT25DF021A-XMHNHR-T—meet these core substitution criteria. Both are Renesas Electronics Corporation FLASH memory devices with identical memory capacity, organization, interface, and package specifications. Differences exist in clock frequency, write cycle times, operating temperature range, and moisture sensitivity level, which determine their suitability for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

AT25DF021A-XMHN-T is suitable for applications requiring higher clock frequency performance (104 MHz versus 70 MHz) and faster page write cycles (2.5ms versus 5ms). This substitute maintains identical supply voltage range and operating temperature specifications as the primary part. MSL rating of 1 (Unlimited) provides equivalent moisture sensitivity characteristics. This part is recommended when system performance requirements exceed the primary part's 70 MHz specification while maintaining the same thermal and environmental operating conditions.

AT25DF021A-XMHNHR-T is suitable for applications requiring extended operating temperature range (-40°C ~ 125°C versus -40°C ~ 85°C). The minimum supply voltage is slightly higher at 1.7V versus 1.65V. Word write cycle time is longer at 12µs versus 8µs, while page write cycle remains at 5ms. MSL rating of 3 (168 Hours) indicates higher moisture sensitivity requiring controlled storage conditions. This part is recommended for high-temperature industrial or automotive applications where the extended temperature range is a critical design requirement.

Both substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the primary part's regulatory certifications.

Frequently Asked Questions (FAQ)

Q: Can AT25DF021A-XMHN-T be used as a direct replacement for AT25XE021A-XMHN-T?

A: Yes. Both parts share identical memory capacity (2Mbit), organization (256K x 8), SPI interface, 8-TSSOP package, supply voltage range (1.65V ~ 3.6V), and operating temperature range (-40°C ~ 85°C). The AT25DF021A-XMHN-T operates at higher clock frequency (104 MHz) and offers faster page write cycles (2.5ms), making it functionally compatible and performance-enhanced for the same applications.

Q: What are the key differences between the two substitute parts?

A: AT25DF021A-XMHN-T operates at 104 MHz with 2.5ms page write time and MSL 1 rating. AT25DF021A-XMHNHR-T operates at 85 MHz with 5ms page write time, supports extended temperature range to 125°C, and has MSL 3 rating. Select AT25DF021A-XMHN-T for performance-critical applications; select AT25DF021A-XMHNHR-T for high-temperature environments.

Q: Are package dimensions identical across all three parts?

A: Yes. All three parts use 8-TSSOP surface mount package with 0.173" width and 4.40mm body width. PCB footprints are identical, and no layout modifications are required when substituting between these parts.

Q: What is the significance of MSL rating differences?

A: MSL 1 (Unlimited) indicates the part has no moisture sensitivity restrictions and can be stored indefinitely in standard conditions. MSL 3 (168 Hours) requires controlled storage and limits floor life to 168 hours after moisture barrier bag opening. AT25DF021A-XMHNHR-T requires more stringent handling procedures during manufacturing and assembly.

Q: Can AT25DF021A-XMHNHR-T operate at 1.65V minimum supply voltage?

A: No. AT25DF021A-XMHNHR-T minimum supply voltage is 1.7V. Applications requiring 1.65V operation must use AT25XE021A-XMHN-T or AT25DF021A-XMHN-T.

Q: Which substitute part is recommended for automotive applications?

A: AT25DF021A-XMHNHR-T is suitable for automotive applications due to its extended operating temperature range (-40°C ~ 125°C), which covers automotive temperature specifications. Verify specific automotive qualification requirements with application documentation.