AT88SC0204CA-Y6H-T Equivalent & Substitute Parts

Part Overview

The AT88SC0204CA-Y6H-T is a Secure Memory IC manufactured by Microchip Technology, part of the CryptoMemory® series. This 8-Mini Map (2x3) surface mount device provides 2Kbit secure memory storage with I2C interface functionality, designed for embedded and smart card applications. The part is currently Active in product status with ROHS3 compliance and REACH unaffected classification.

Substitute parts are identified when equivalent electrical parameters and mechanical compatibility are maintained across the 2Kbit I2C EEPROM memory category, ensuring functional interchangeability in target applications.

Key Parameters

Parameter	AT88SC0204CA-Y6H-T
Manufacturer	Microchip Technology
Memory Type	Secure Memory
Memory Size	2Kbit
Memory Organization	256 x 8
Memory Interface	I2C
Package / Case	8-UFDFN Exposed Pad
Supplier Device Package	8-Mini Map (2x3)
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the AT88SC0204CA-Y6H-T are qualified based on the following criteria:

Core Compatibility Parameters:

Memory Size: 2Kbit (256 x 8 organization)
Memory Interface: I2C protocol
Package Type: 8-UFDFN Exposed Pad (2x3 footprint)
Mounting Type: Surface Mount
Operating Temperature Range: -40°C ~ 85°C
RoHS3 Compliance
Active product status

Electrical Compatibility:

Supply voltage ranges must encompass or match the application requirements
I2C clock frequency compatibility (1 MHz or 400 kHz operation)
Write cycle time: 5ms (standard across all qualified substitutes)
Access time specifications within acceptable ranges

Mechanical Compatibility:

All substitute parts utilize 8-UFDFN or equivalent exposed pad packages
Pin configuration and footprint compatibility maintained
MSL rating consideration for assembly processes

Substitute parts are grouped into two categories: Microchip Technology EEPROM variants (AT24C02D-MAHM-T, AT24CS02-MAHM-T, AT34C02D-MAHM-T) and cross-manufacturer alternatives (Rohm Semiconductor BR series, STMicroelectronics M24C02/M34E02 series, onsemi CAT34C02).

Parameter Comparison

Part Number	Manufacturer	Memory Size	Memory Interface	Clock Frequency	Supply Voltage	Operating Temp	Package	MSL Rating	Product Status
AT88SC0204CA-Y6H-T	Microchip Technology	2Kbit	I2C	N/A	N/A	-40°C ~ 85°C	8-UFDFN (2x3)	3	Active
AT24C02D-MAHM-T	Microchip Technology	2Kbit	I2C	1 MHz	1.7V ~ 3.6V	-40°C ~ 85°C	8-UFDFN (2x3)	3	Active
AT24CS02-MAHM-T	Microchip Technology	2Kbit	I2C	1 MHz	1.7V ~ 5.5V	-40°C ~ 85°C	8-UFDFN (2x3)	3	Active
AT34C02D-MAHM-T	Microchip Technology	2Kbit	I2C	1 MHz	1.7V ~ 5.5V	-40°C ~ 85°C	8-UFDFN (2x3)	3	Active
BR24L02NUX-WTR	Rohm Semiconductor	2Kbit	I2C	400 kHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-UFDFN (2x3)	1	Active
BR24T02NUX-WTR	Rohm Semiconductor	2Kbit	I2C	400 kHz	1.6V ~ 5.5V	-40°C ~ 85°C	8-UFDFN (2x3)	1	Active
BR34E02NUX-WTR	Rohm Semiconductor	2Kbit	I2C	400 kHz	1.7V ~ 3.6V	-40°C ~ 85°C	8-UFDFN (2x3)	1	Active
CAT34C02HU4IGT4A	onsemi	2Kbit	I2C	400 kHz	1.7V ~ 5.5V	-40°C ~ 85°C	8-UFDFN (2x3)	1	Active
M24C02-FMC6TG	STMicroelectronics	2Kbit	I2C	400 kHz	1.7V ~ 5.5V	-40°C ~ 85°C	8-UFDFN (2x3)	1	Active
M24C02-RMC6TG	STMicroelectronics	2Kbit	I2C	400 kHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-UFDFN (2x3)	1	Active
M34E02-FMC6TG	STMicroelectronics	2Kbit	I2C	400 kHz	1.7V ~ 5.5V	-40°C ~ 85°C	8-UFDFN (2x3)	1	Active

Engineering Selection Recommendations

Microchip Technology EEPROM Series (AT24C02D-MAHM-T, AT24CS02-MAHM-T, AT34C02D-MAHM-T):

These parts maintain Microchip Technology manufacturer continuity with identical package specifications and operating temperature ranges. All three are Active status products with ROHS3 compliance. AT24CS02-MAHM-T and AT34C02D-MAHM-T offer extended supply voltage range (1.7V ~ 5.5V) compared to AT24C02D-MAHM-T (1.7V ~ 3.6V). All three support 1 MHz I2C clock frequency with 5ms write cycle time. MSL rating of 3 matches the main part specification.

Rohm Semiconductor BR Series (BR24L02NUX-WTR, BR24T02NUX-WTR, BR34E02NUX-WTR):

These parts provide cross-manufacturer substitution with improved MSL rating of 1 (Unlimited). All operate at 400 kHz I2C frequency with 5ms write cycle time. BR24L02NUX-WTR is DiGi-Electronics Programmable Verified. BR34E02NUX-WTR matches the main part supply voltage range (1.7V ~ 3.6V). BR24T02NUX-WTR extends to 1.6V minimum supply voltage.

STMicroelectronics M24C02/M34E02 Series (M24C02-FMC6TG, M24C02-RMC6TG, M34E02-FMC6TG):

These parts offer 400 kHz I2C operation with MSL rating of 1. M24C02-FMC6TG and M34E02-FMC6TG support 1.7V ~ 5.5V supply voltage range. M24C02-RMC6TG operates at 1.8V ~ 5.5V. All maintain 5ms write cycle time and 900 ns access time specification.

onsemi CAT34C02HU4IGT4A:

This part provides 400 kHz I2C operation with 1.7V ~ 5.5V supply voltage range and MSL rating of 1. Access time specification of 900 ns is provided.

All substitute parts maintain Active product status, ROHS3 compliance, and REACH unaffected classification. Selection should be based on specific supply voltage requirements, I2C clock frequency tolerance, and MSL handling requirements for the target assembly process.

Frequently Asked Questions (FAQ)

Q: What are the primary substitution criteria for the AT88SC0204CA-Y6H-T?

A: The primary criteria are 2Kbit memory capacity, I2C interface protocol, 8-UFDFN exposed pad package (2x3 footprint), surface mount mounting type, and -40°C ~ 85°C operating temperature range. All substitute parts meet these core requirements.

Q: Can I use a 400 kHz I2C part to replace a 1 MHz part?

A: Yes, if the application circuit operates at 400 kHz or lower I2C clock frequency. The Microchip AT24C02D-MAHM-T, AT24CS02-MAHM-T, and AT34C02D-MAHM-T support 1 MHz operation, while Rohm and STMicroelectronics alternatives operate at 400 kHz. Verify your system I2C clock frequency specification before selection.

Q: What is the difference between MSL 1 and MSL 3 ratings?

A: MSL 3 (168 Hours) indicates the part can be exposed to moisture for up to 168 hours at 85°C and 85% relative humidity before soldering. MSL 1 (Unlimited) means the part has no time-to-soldering limit. Rohm Semiconductor and STMicroelectronics parts feature MSL 1, providing greater flexibility in assembly scheduling.

Q: Are all substitute parts pin-compatible with the AT88SC0204CA-Y6H-T?

A: All substitute parts use the 8-UFDFN exposed pad package with 2x3 footprint and maintain I2C interface pin configuration. Mechanical and electrical pin compatibility is maintained across all listed substitutes.

Q: What supply voltage range should I select?

A: The main part AT88SC0204CA-Y6H-T does not specify supply voltage in the provided parameters. For 3.3V systems, AT24C02D-MAHM-T (1.7V ~ 3.6V) or BR34E02NUX-WTR (1.7V ~ 3.6V) are suitable. For 5V systems, select AT24CS02-MAHM-T, AT34C02D-MAHM-T, BR24L02NUX-WTR, BR24T02NUX-WTR, CAT34C02HU4IGT4A, M24C02-FMC6TG, or M34E02-FMC6TG, all supporting 5.5V maximum.

Q: Which substitute offers the best inventory availability?

A: AT34C02D-MAHM-T has the highest inventory at 500,100 pieces. M34E02-FMC6TG follows with 27,294 pieces. BR24L02NUX-WTR has 184,920 pieces available.

Q: Is DiGi-Electronics Programmable verification important for my application?

A: DiGi-Electronics Programmable Verified status indicates the part has been tested and confirmed for programmable device applications. BR24L02NUX-WTR is the only substitute with Verified status. If this certification is required for your application, this part should be prioritized.

Q: Can I mix different substitute parts in the same design?

A: Yes, all substitute parts maintain functional compatibility through identical memory capacity, I2C interface, package footprint, and operating temperature range. However, verify that your circuit design accommodates the specific supply voltage range and I2C clock frequency of each selected part.

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