AT21CS01-SSHM14-T Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip AT21CS01-SSHM14-T is a 1Kbit serial EEPROM with single-wire interface, 1.7V to 3.6V supply range, and 125 kbps data rate in an industrial-temperature 8-SOIC package. Available in stock worldwide with competitive pricing.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- AT21CS01-SSHM14-T Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5230(MOQ 10)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1Kbit non-volatile EEPROM with 100-year data retention and 1,000,000 write/erase cycle endurance
- Single-wire interface at 125 kbps reducing pin count to just 1 data line for ultra-compact designs
- 1.7V to 3.6V supply range enabling direct use with 1.8V and 3.3V low-power microcontroller systems
Applications
The AT21CS01-SSHM14-T is ideal for storing calibration data, configuration parameters, and identification information in space-constrained embedded designs such as sensor modules and plug-in peripherals. Its single-wire interface minimizes pin usage on host microcontrollers, making it well-suited for board-edge connectors and hot-swap accessory identification systems. Industrial temperature range support ensures reliable data retention in equipment operating from -40°C to 85°C.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 7Weeks |
| YTEOL | 6 |
| Data Retention Time-Min | 100 |
| Endurance | 1000000 Write/Erase Cycles |
| I2C Control Byte | 1010DDDR |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Memory Density | 1024bit |
| Memory IC Type | EEPROM |
| Memory Width | 8 |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 128words |
| Number of Words Code | 128 |
| Operating Mode | SYNCHRONOUS |
| Organization | 128X8 |
| Output Characteristics | OPEN-DRAIN |
| 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 | 1.8V |
| Serial Bus Type | I2C |
| Standby Current-Max | 0.0000025A |
| Supply Current-Max | 0.0005mA |
| Supply Voltage-Max (Vsup) | 3.6V |
| Supply Voltage-Min (Vsup) | 1.7V |
| Supply Voltage-Nom (Vsup) | 1.8V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Write Cycle Time-Max (tWC) | 5ms |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Philippines |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many write/erase cycles can the AT21CS01-SSHM14-T endure before wear-out?
The AT21CS01-SSHM14-T is rated for a minimum of 1,000,000 write/erase cycles per memory cell, combined with 100 years of data retention at room temperature. This high endurance makes it suitable for applications with frequent configuration updates, such as industrial calibration registers updated thousands of times over the product lifetime.
What supply voltage range does the AT21CS01-SSHM14-T support for low-power system designs?
The AT21CS01-SSHM14-T operates from 1.7V to 3.6V, covering both 1.8V and 3.3V logic supply rails without level-shifting circuitry. This broad range is particularly valuable in IoT sensor nodes and wearable devices where power rails vary between battery charge states.
How does the single-wire interface of AT21CS01-SSHM14-T reduce PCB complexity versus standard I2C EEPROM?
The AT21CS01-SSHM14-T uses a single data wire at 125 kbps instead of the 2-wire SDA/SCL lines of standard I2C EEPROMs, saving one pin and one pull-up resistor. In connector-constrained designs such as 4-pin sensor cables or flex PCBs, reclaiming 1 signal line can eliminate an entire connector row or reduce cable width by 25%.
Is AT21CS01-SSHM14-T suitable for industrial temperature environments?
Yes, AT21CS01-SSHM14-T carries an industrial temperature rating of -40°C to 85°C, ensuring reliable 1Kbit EEPROM read/write operation across the full range of factory automation, outdoor equipment, and automotive infotainment accessory identification use cases.
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