24C65T-I/SM Microchip Integrated Circuit (Small Outline Packages) In Stock
24C65T-I/SM is a Microchip 64 Kbit I2C serial EEPROM with a 400 kHz fast-mode interface offering guaranteed 1,000,000 erase/write endurance cycles and greater than 200-year data retention. It operates from 1.7 V to 5.5 V and is available in an 8-pin SOIJ SMD package. Designed for non-volatile configuration storage in industrial, consumer, and embedded microcontroller applications.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 24C65T-I/SM Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.0290(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
- 64 Kbit (8 KB) storage with 400 kHz I2C fast-mode interface for quick read/write access from any microcontroller
- Guaranteed 1,000,000 erase/write cycles and over 200-year data retention ensure ultra-reliable non-volatile storage
- Wide supply voltage range of 1.7 V to 5.5 V enables direct interfacing with 1.8 V, 3.3 V, and 5 V microcontrollers
- 8-pin SOIJ small-outline SMD package minimizes PCB footprint for space-constrained embedded designs
Applications
The 24C65T-I/SM is ideal for storing configuration parameters, calibration data, and firmware version information in industrial controllers, smart meters, and IoT edge nodes that require reliable non-volatile memory over extended field lifetimes. Its I2C interface simplifies connection to Microchip PIC, ARM Cortex-M, and other microcontrollers with as few as 2 signal wires. The device is also widely used for user preference storage in consumer appliances, medical devices, and automotive infotainment systems requiring tamper-resistant data persistence.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIJ-8 |
| Factory Lead Time | 6Weeks |
| Additional Feature | DATA RETENTION > 200 YEARS; 1000000 ERASE/WRITE CYCLES GUARANTEED |
| Clock Frequency-Max (fCLK) | 0.4MHz |
| Data Retention Time-Min | 200 |
| Endurance | 100000 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 Words | 8192words |
| Number of Words Code | 8000 |
| Operating Mode | SYNCHRONOUS |
| Organization | 8KX8 |
| Output Characteristics | OPEN-DRAIN |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Parallel/Serial | SERIAL |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supplies | 5V |
| Qualification Status | Not Qualified |
| Serial Bus Type | I2C |
| Standby Current-Max | 0.000005A |
| Subcategory | EEPROMs |
| Supply Current-Max | 0.003mA |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Write Cycle Time-Max (tWC) | 5ms |
| Write Protection | SOFTWARE |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for 24C65T-I/SM:
Frequently Asked Questions
How many erase/write cycles and what data retention lifetime does the 24C65T-I/SM guarantee?
The 24C65T-I/SM guarantees a minimum of 1,000,000 erase/write cycles per byte location and a data retention time exceeding 200 years at room temperature. These specifications make it suitable for applications such as industrial meter logging or medical device calibration storage, where configuration data is updated frequently over a multi-decade product lifetime.
What supply voltage range does 24C65T-I/SM support, and how does this affect microcontroller interfacing?
The 24C65T-I/SM operates across a supply voltage range of 1.7 V to 5.5 V, allowing direct I2C interfacing with 1.8 V ultra-low-power microcontrollers, 3.3 V ARM Cortex-M devices, and legacy 5 V PIC or AVR controllers without level-shifting circuitry. This broad range reduces BOM complexity in mixed-voltage embedded designs.
What is the maximum I2C clock frequency for 24C65T-I/SM and how does it affect data transfer speed?
The 24C65T-I/SM supports I2C fast mode at up to 400 kHz clock frequency. At 400 kHz, a full 64 Kbit (8,192 byte) sequential read completes in approximately 200 ms, which is fast enough for firmware configuration loading at startup in embedded systems without impacting boot time for most applications requiring a few hundred bytes.
In which embedded system scenarios is 24C65T-I/SM preferred over internal flash or SRAM for parameter storage?
The 24C65T-I/SM is preferred when parameters must survive a complete power loss without a battery backup, and when the microcontroller's internal flash endurance of 10,000 to 100,000 cycles is insufficient for frequent updates. Applications include real-time event counters, odometer logging in automotive systems, and factory calibration coefficients in 8-channel sensor nodes that require guaranteed retention beyond the host MCU's flash lifetime.
How does the SOIJ-8 package of 24C65T-I/SM fit into a compact PCB layout for IoT modules?
The 24C65T-I/SM comes in an 8-pin SOIJ small-outline SMD package with a body measuring approximately 5 mm x 4 mm, consuming under 20 mm² of PCB area. With only 2 signal lines (SDA and SCL) shared across multiple devices via I2C address selection on pins A0–A2, up to 8 units can share a single bus, enabling 512 Kbit total storage expansion on a compact IoT module without increasing connector count.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.4500 | $2.45 |
| 100+ | $2.1100 | $211.00 |
| 491+ | $1.1270 | $553.36 |
| 888+ | $1.0290 | $913.75 |
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