24AA64-I/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
The 24AA64-I/ST is a 64Kbit (8Kx8) I2C serial EEPROM from Microchip operating at 1.8V with up to 400kHz fast-mode interface and 1 million write/erase cycle endurance in an 8-pin TSSOP package. It provides 200-year minimum data retention and supports hardware address selection for multi-device bus configurations. Available from stock worldwide at competitive pricing.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 24AA64-I/ST Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4434(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 64Kbit (8192 bytes) I2C EEPROM with 1.8V operation suits low-voltage microcontrollers and portable device designs
- 400kHz I2C fast-mode interface enables efficient sequential page reads and writes for larger data blocks
- Hardware address pins allow up to 8 devices on the same I2C bus, enabling scalable multi-chip storage configurations
- 1 million write/erase cycle endurance with 200-year data retention ensures reliable long-term non-volatile storage
Applications
The 24AA64-I/ST is widely used for storing firmware parameters, user configuration, data logs, and calibration tables in embedded systems powered by low-voltage microcontrollers and SoCs. Its I2C interface and address-select pins make it ideal for multi-node sensor networks, industrial instrumentation, and smart home devices where multiple EEPROMs share a common two-wire bus. It is also used in medical devices, wearables, and consumer electronics for retaining settings and measurement history across power cycles.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TSSOP-8 |
| Factory Lead Time | 25Weeks |
| YTEOL | 8 |
| Clock Frequency-Max (fCLK) | 0.4MHz |
| Data Retention Time-Min | 200 |
| Endurance | 1000000 Write/Erase Cycles |
| I2C Control Byte | 1010DDDR |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Memory Density | 65536bit |
| Memory IC Type | EEPROM |
| Memory Width | 8 |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 8192words |
| Number of Words Code | 8000 |
| Operating Mode | SYNCHRONOUS |
| Organization | 8KX8 |
| Output Characteristics | OPEN-DRAIN |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Parallel/Serial | SERIAL |
| Peak Reflow Temperature (Cel) | 260 |
| Programming Voltage | 2.5V |
| Qualification Status | Not Qualified |
| Serial Bus Type | I2C |
| Standby Current-Max | 0.000001A |
| Supply Current-Max | 0.003mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1.7V |
| Supply Voltage-Nom (Vsup) | 2.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Write Cycle Time-Max (tWC) | 5ms |
| Write Protection | HARDWARE |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.32.00.51 |
| Country of Origin | Mainland China, Malaysia, Philippines, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for 24AA64-I/ST:
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Frequently Asked Questions
What is the memory capacity and organization of the 24AA64-I/ST?
The 24AA64-I/ST is a 64Kbit EEPROM organized as 8,192 bytes (8Kx8), providing byte-addressable non-volatile storage accessible over the I2C bus. This capacity is suitable for storing firmware configuration tables, sensor calibration data, event logs, and user-specific settings in embedded applications.
What I2C address does the 24AA64-I/ST use and how many devices can share a bus?
The 24AA64-I/ST uses the I2C control byte format 1010DDDR, where DDD are the three hardware address bits set by external pins A0, A1, and A2. This allows up to 8 devices to coexist on the same I2C bus, providing up to 512Kbits of combined EEPROM storage using only the two I2C bus wires.
What supply voltage and interface speed does the 24AA64-I/ST support?
The 24AA64-I/ST operates at 1.8V, compatible with modern low-voltage microcontrollers and SoCs. It supports I2C communication at up to 400kHz (fast mode), enabling efficient page writes and sequential reads for larger data blocks commonly needed in data-logging and configuration-storage applications.
What package does the 24AA64-I/ST come in?
The 24AA64-I/ST is housed in an 8-pin TSSOP (Thin Shrink Small Outline Package) surface-mount package (JESD-30 R-PDSO-G8, Microchip code TSSOP-8), a compact package suitable for high-density PCBs. It is RoHS compliant (JESD-609 e3, Pbfree), supporting lead-free assembly processes.
What are the endurance and data retention characteristics of the 24AA64-I/ST?
The 24AA64-I/ST guarantees a minimum data retention period of 200 years and supports up to 1 million write/erase cycles per memory location, ensuring that configuration data, calibration values, and logged measurements remain intact and reliably accessible throughout the entire product lifetime.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.6000 | $0.60 |
| 3+ | $0.5360 | $1.61 |
| 100+ | $0.5300 | $53.00 |
| 1000+ | $0.4900 | $490.00 |
| 2800+ | $0.4510 | $1262.91 |
| 5600+ | $0.4434 | $2483.10 |
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