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AT34C02D-XHMHL-T
Microchip Technology
IC EEPROM 2KBIT I2C 1MHZ 8TSSOP
2489 Pcs New Original In Stock
EEPROM Memory IC 2Kbit I2C 1 MHz 8-TSSOP
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5.0 / 5.0
- (67 Ratings)
AT34C02D-XHMHL-T
Product Overview
1251179
DiGi Electronics Part Number
AT34C02D-XHMHL-T-DGManufacturer
Microchip Technology
AT34C02D-XHMHL-T
Description
IC EEPROM 2KBIT I2C 1MHZ 8TSSOPInventory
2489 Pcs New Original In Stock
EEPROM Memory IC 2Kbit I2C 1 MHz 8-TSSOP
Quantity
Minimum 1
Minimum 1
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AT34C02D-XHMHL-T Technical Specifications
Category
Memory, Memory
Packaging
-
Series
-
Product Status
Active
DiGi-Electronics Programmable
Not Verified
Memory Type
Non-Volatile
Memory Format
EEPROM
Technology
EEPROM
Memory Size
2Kbit
Memory Organization
256 x 8
Memory Interface
I2C
Clock Frequency
1 MHz
Write Cycle Time - Word, Page
5ms
Voltage - Supply
1.7V ~ 5.5V
Operating Temperature
-40°C ~ 85°C (TA)
Mounting Type
Surface Mount
Package / Case
8-TSSOP (0.173", 4.40mm Width)
Supplier Device Package
8-TSSOP
Base Product Number
AT34C02
Datasheet & Documents
HTML Datasheet
AT34C02D-XHMHL-T-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.32.0051
Additional Information
Other Names
AT34C02D-XHMHL-TCT
AT34C02D-XHMHL-TTR
AT34C02D-XHMHL-TDKR
Standard Package
5,000
Alternative Parts
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MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
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Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
DiGi Electronics kept me informed with timely updates during shipping.
Dec 02, 2025
The professionalism of the customer service team made all the difference in my shopping experience.
Dec 02, 2025
Their prompt shipping schedule helps us plan effectively, and their packaging keeps products safe.
Dec 02, 2025
We appreciate their punctual delivery, helping us meet tight deadlines.
Dec 02, 2025
They handle after-sales concerns with urgency and care, reflecting their commitment to customers.
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Frequently Asked Questions (FAQ)
How does the AT34C02D-XHMHL-T compare to the M24C02-FDW6TP in terms of real-world I2C bus reliability under noisy industrial environments?
While both the AT34C02D-XHMHL-T and M24C02-FDW6TP offer similar 2Kbit EEPROM functionality with 1.7V–5.5V operation, the AT34C02D-XHMHL-T includes built-in noise filtering on the I2C lines and stricter timing margin enforcement, making it more resilient in electrically noisy industrial settings. The M24C02-FDW6TP, though pin-compatible, lacks these enhancements and may require additional external pull-up tuning or filtering components. For high-interference applications like motor control or power conversion systems, the AT34C02D-XHMHL-T reduces the risk of spurious writes or communication lockups without extra circuitry.
Can I safely replace a legacy 24AA02T-I/ST with the AT34C02D-XHMHL-T in a 3.3V automotive sensor module without redesigning the PCB?
Yes, the AT34C02D-XHMHL-T is a functional drop-in replacement for the 24AA02T-I/ST in most 3.3V automotive applications, sharing the same 8-TSSOP package, pinout, and I2C interface. However, note that the AT34C02D-XHMHL-T has a slightly faster maximum clock frequency (1 MHz vs. 400 kHz on the 24AA02T-I/ST at 3.3V), which improves throughput but requires verifying that your microcontroller’s I2C controller supports 1 MHz operation. Also, ensure your system accounts for the AT34C02D-XHMHL-T’s 5 ms write cycle time—identical to the 24AA02T-I/ST—to avoid premature read attempts during writes, which could corrupt data.
What are the key reliability risks when using the AT34C02D-XHMHL-T in battery-powered IoT devices operating near its lower voltage limit of 1.7V?
Operating the AT34C02D-XHMHL-T near 1.7V increases the risk of incomplete writes or data corruption if supply voltage dips during EEPROM programming, especially under load transients common in wireless transmission bursts. To mitigate this, implement a voltage supervisor circuit or use the MCU’s brown-out detection to block EEPROM writes when VCC falls below 1.8V. Additionally, avoid frequent small writes; instead, buffer data and perform fewer, larger page writes to minimize exposure during the 5 ms write window. This reduces wear and improves data integrity in energy-constrained designs.
Is the AT34C02D-XHMHL-T suitable for high-temperature industrial applications where ambient temperatures may exceed 80°C, and how does its endurance compare to alternatives like the BR24G02FVT-3AGE2?
The AT34C02D-XHMHL-T is rated for -40°C to +85°C, making it suitable for most industrial environments, but sustained operation near 85°C accelerates oxide degradation and can reduce effective endurance below the typical 1 million write cycles. In contrast, the BR24G02FVT-3AGE2 offers similar specs but lacks Microchip’s proprietary endurance-boosting cell architecture. For applications with frequent configuration updates (e.g., calibration storage in thermal cycling environments), consider adding software wear-leveling or using FRAM instead. If sticking with EEPROM, limit write frequency and monitor junction temperature to preserve long-term reliability of the AT34C02D-XHMHL-T.
What design precautions should I take when integrating the AT34C02D-XHMHL-T into a multi-device I2C bus with long trace lengths and multiple EEPROMs?
When using the AT34C02D-XHMHL-T on a shared I2C bus with long traces (>10 cm) or multiple devices, ensure proper pull-up resistor sizing (typically 2.2–4.7 kΩ for 1 MHz operation) and consider adding series termination resistors (22–100 Ω) near the EEPROM to reduce reflections. The AT34C02D-XHMHL-T’s input capacitance (typically 6 pF) is comparable to competitors, but cumulative bus capacitance must stay below 400 pF for reliable 1 MHz communication. Also, assign unique I2C addresses if using multiple AT34C02D-XHMHL-T devices—leverage the A0/A1/A2 pins for addressing, and avoid address conflicts with other peripherals like sensors or RTCs on the same bus to prevent silent data corruption.
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AT34C02D-XHMHL-T CAD Models
Microchip Technology AT34C02D-XHMHL-T PCB symbols & footprints
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