FT24C512A-UTR-T EEPROM 512Kbit I2C Equivalent & Substitute Parts

Part Overview

The FT24C512A-UTR-T is a 512Kbit EEPROM memory IC with I2C interface manufactured by Fremont Micro Devices Ltd in 8-TSSOP surface mount packaging. This part is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and production continuity. The device operates across a wide voltage range (1.8V to 5.5V) and temperature range (-40°C to 85°C), serving applications requiring non-volatile serial memory storage.

Key Parameters

Parameter	Value
Memory Type	Non-Volatile EEPROM
Memory Size	512Kbit
Memory Organization	64K x 8
Memory Interface	I2C
Clock Frequency	1 MHz
Access Time	900 ns
Write Cycle Time	5 ms
Voltage Supply Range	1.8V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	8-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the FT24C512A-UTR-T are classified based on strict parameter matching within the following criteria:

Direct Substitutes maintain identical electrical and mechanical specifications: 512Kbit capacity, I2C interface, 1 MHz clock frequency, 900 ns access time, 5 ms write cycle time, 1.8V to 5.5V supply voltage, -40°C to 85°C operating temperature, and 8-TSSOP packaging.

Parametric Equivalents share all core functional parameters but may differ in packaging designation or product status while maintaining electrical compatibility.

Similar Parts meet the primary functional requirements (512Kbit EEPROM, I2C interface, 8-TSSOP package, compatible voltage and temperature ranges) but may have variations in clock frequency, access time, or supply voltage range that remain within acceptable design tolerances.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Operating Temp	Package	Product Status
FT24C512A-UTR-T	Fremont Micro Devices	512Kbit	1 MHz	900 ns	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Discontinued
FT24C512A-ETR-T	Fremont Micro Devices	512Kbit	1 MHz	900 ns	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
FT24C512A-ETG-T	Fremont Micro Devices	512Kbit	1 MHz	900 ns	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
24AA512T-I/ST	Microchip Technology	512Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
24FC512T-I/ST	Microchip Technology	512Kbit	1 MHz	400 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
BR24G512FVT-3AGE2	Rohm Semiconductor	512Kbit	1 MHz	Not specified	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP-B	Active
CAT24C512YI-GT3	onsemi	512Kbit	1 MHz	900 ns	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
CAT24C512YIGT3JN	onsemi	512Kbit	1 MHz	900 ns	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
M24512-DFDW6TP	STMicroelectronics	512Kbit	1 MHz	500 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
M24512-DRDW3TP/K	STMicroelectronics	512Kbit	1 MHz	450 ns	1.8V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	Active
M24512-DRDW8TP/K	STMicroelectronics	512Kbit	1 MHz	450 ns	1.8V ~ 5.5V	-40°C ~ 105°C	8-TSSOP	Active

Engineering Selection Recommendations

Primary Recommendation: FT24C512A-ETR-T or FT24C512A-ETG-T from Fremont Micro Devices provide direct electrical and mechanical equivalence to the discontinued FT24C512A-UTR-T. Both are active products with identical specifications and ROHS3 compliance, ensuring seamless design migration.

High-Compatibility Alternatives: CAT24C512YI-GT3 and CAT24C512YIGT3JN from onsemi match all critical parameters including 1 MHz clock frequency, 900 ns access time, and identical voltage/temperature ranges. Both are ROHS3 compliant and actively produced.

Performance-Enhanced Options: 24FC512T-I/ST from Microchip Technology offers superior access time (400 ns versus 900 ns) while maintaining 1 MHz I2C operation and identical packaging. This part is suitable for applications requiring faster read performance.

Automotive-Grade Alternatives: M24512-DRDW3TP/K and M24512-DRDW8TP/K from STMicroelectronics provide AEC-Q100 automotive qualification with extended temperature ranges (-40°C to 125°C and -40°C to 105°C respectively). These are appropriate for automotive or industrial applications requiring higher temperature operation.

Lower-Speed Alternative: 24AA512T-I/ST from Microchip Technology operates at 400 kHz I2C frequency instead of 1 MHz. This part is suitable only for applications where reduced I2C speed is acceptable.

All recommended substitutes maintain ROHS3 compliance and MSL Level 1 moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can I use 24AA512T-I/ST as a direct replacement for FT24C512A-UTR-T?

A: 24AA512T-I/ST is functionally compatible but operates at 400 kHz I2C clock frequency compared to the original 1 MHz specification. Use this part only if your application does not require 1 MHz I2C operation. All other electrical parameters (512Kbit capacity, 64K x 8 organization, voltage range, temperature range, and 8-TSSOP package) are compatible.

Q: What is the difference between FT24C512A-ETR-T and FT24C512A-ETG-T?

A: Both parts are parametrically identical with 512Kbit capacity, 1 MHz I2C operation, 900 ns access time, and 8-TSSOP packaging. The difference lies in packaging designation (ETR-T versus ETG-T) and inventory availability. Both are active products suitable for direct substitution.

Q: Are the STMicroelectronics M24512 variants pin-compatible with the original part?

A: Yes. M24512-DFDW6TP, M24512-DRDW3TP/K, and M24512-DRDW8TP/K all use 8-TSSOP packaging with identical pinout. The M24512-DRDW3TP/K and M24512-DRDW8TP/K variants include AEC-Q100 automotive qualification and extended temperature ranges, making them suitable for automotive applications.

Q: What is the advantage of CAT24C512YI-GT3 over the original FT24C512A-UTR-T?

A: CAT24C512YI-GT3 from onsemi provides identical electrical specifications (512Kbit, 1 MHz I2C, 900 ns access time, 1.8V to 5.5V supply, -40°C to 85°C operation) with the advantage of active product status and higher inventory availability. It is a direct functional equivalent.

Q: Can I use 24FC512T-I/ST if my design requires faster memory access?

A: Yes. 24FC512T-I/ST offers 400 ns access time compared to 900 ns in the original part, providing faster read performance. It maintains 1 MHz I2C operation, 512Kbit capacity, and 8-TSSOP packaging. Verify that your system design can accommodate the faster access time without timing conflicts.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 moisture sensitivity rating, matching the original FT24C512A-UTR-T specifications.

Q: What packaging options are available for these substitutes?

A: All substitute parts use 8-TSSOP surface mount packaging with 0.173" width and 4.40mm body width. BR24G512FVT-3AGE2 uses 8-TSSOP-B designation but maintains mechanical compatibility. Packaging options include Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel formats depending on the specific part number.

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