93LC46-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
93LC46-I/SN is a 1 Kbit serial EEPROM with a 3-wire Microwire interface, 2 MHz clock, up to 1,000,000 write/erase cycles, and 200-year data retention, packaged in an 8-pin SOIC. It supports 8-bit or 16-bit memory organization and operates from 2.5 V to 5.5 V. Available from stock worldwide with fast shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- NOT RECOMMENDED
- Datasheet
- 93LC46-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5000(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of 93LC46-I/SN?
- 1 Kbit EEPROM with selectable 8-bit or 16-bit memory organization for flexible data storage
- 3-wire Microwire serial interface operating at up to 2 MHz for simple microcontroller connectivity
- 1,000,000 write/erase cycle endurance for high-reliability non-volatile storage
- 200-year minimum data retention ensuring long-term configuration and calibration data integrity
- Wide supply voltage range of 2.5 V to 5.5 V for 3.3 V and 5 V system compatibility
- Compact 8-pin SOIC package minimizing board space in constrained PCB designs
What is 93LC46-I/SN used for?
The 93LC46-I/SN is widely used for storing non-volatile configuration data, calibration constants, and serial number information in microcontroller-based systems such as consumer appliances, industrial sensors, and automotive accessories. Its 3-wire Microwire interface connects directly to SPI-compatible microcontrollers with minimal GPIO usage, simplifying firmware integration. The combination of 1,000,000 write cycles endurance and 200-year data retention makes it reliable for frequently updated settings in meter reading, access control, and smart metering applications.
What are the specifications of 93LC46-I/SN?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 5Weeks |
| Date Of Intro | 1991-01-01 |
| YTEOL | 3 |
| Alternate Memory Width | 8 |
| Clock Frequency-Max (fCLK) | 2MHz |
| Data Retention Time-Min | 200 |
| Endurance | 1000000 Write/Erase Cycles |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Memory Density | 1024bit |
| Memory IC Type | EEPROM |
| Memory Width | 16 |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 64words |
| Number of Words Code | 64 |
| Operating Mode | SYNCHRONOUS |
| Organization | 64X16 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.23 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Parallel/Serial | SERIAL |
| Peak Reflow Temperature (Cel) | 260 |
| Programming Voltage | 3V |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Serial Bus Type | MICROWIRE |
| Standby Current-Max | 0.0001A |
| Supply Current-Max | 0.003mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2.5V |
| Supply Voltage-Nom (Vsup) | 3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Write Cycle Time-Max (tWC) | 10ms |
| Write Protection | SOFTWARE |
| 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 | Thailand |
Where can I find the 93LC46-I/SN datasheet?
93LC46-I/SN Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for 93LC46-I/SN?
Compatible alternatives and drop-in replacements for 93LC46-I/SN:
Frequently Asked Questions
What is the write cycle endurance and data retention specification of the 93LC46-I/SN?
The 93LC46-I/SN is rated for a minimum of 1,000,000 write/erase cycles per byte location and guarantees at least 200 years of data retention, making it suitable for frequently updated non-volatile storage of configuration parameters and calibration data in embedded systems.
What serial interface does the 93LC46-I/SN use, and at what maximum clock speed does it operate?
The 93LC46-I/SN uses a 3-wire Microwire serial interface compatible with most SPI-capable microcontrollers, supporting clock frequencies up to 2 MHz. This allows fast, low pin-count access to 1 Kbit of EEPROM storage with minimal firmware overhead in 8-bit or 16-bit organization modes.
Which supply voltage range does the 93LC46-I/SN support, and does it work in a 3.3 V microcontroller system?
The 93LC46-I/SN operates across a supply voltage range of 2.5 V to 5.5 V, covering both 3.3 V and 5 V microcontroller platforms. This flexibility means no level shifting is required when interfacing directly to a 3.3 V MCU GPIO, simplifying design and reducing component count.
When is the 93LC46-I/SN a better choice than a larger EEPROM like the 93LC66 for a calibration storage application?
When an application stores fewer than 128 bytes of calibration or configuration data, the 93LC46-I/SN's 1 Kbit (128 bytes in 8-bit mode) capacity is sufficient, and its lower unit cost and smaller 8-pin SOIC footprint provide a more cost-effective and space-efficient solution than the 93LC66's 4 Kbit capacity.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.6600 | $0.66 |
| 8+ | $0.5502 | $4.40 |
| 2400+ | $0.5341 | $1281.91 |
| 4800+ | $0.5251 | $2520.43 |
| 5000+ | $0.5000 | $2500.00 |
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