23K256-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
The 23K256-I/SN is a 256Kbit serial SRAM from Microchip offering a 20MHz SPI interface with separate I/O and standard SRAM operation. It delivers fast read/write access without the write endurance limitations of EEPROM in a compact 8-pin SOIC package. Available in stock worldwide with competitive pricing for embedded data buffering and memory expansion designs.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 23K256-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 256Kbit (32KB) standard SRAM with 20MHz SPI interface enabling high-speed data buffering in microcontroller systems
- Separate I/O architecture with SPI compatibility (SOIC-8) for easy drop-in integration with any SPI-equipped microcontroller
- Unlimited write endurance unlike EEPROM — ideal for high-frequency read/write buffering in data logging and real-time applications
- Lead-free, RoHS-compliant JESD-609 e3 rated packaging with 8-year estimated end-of-life for long-term production use
Applications
The 23K256-I/SN is ideal for expanding the working memory of resource-constrained microcontrollers in embedded systems such as data loggers, display controllers, and network-connected IoT devices. Its 32KB SPI SRAM capacity allows temporary data buffering, FIFO queue storage, and graphics frame buffering without the write-cycle limitations of Flash or EEPROM. It is commonly paired with PIC, AVR, and ARM Cortex-M microcontrollers in applications requiring fast, unlimited-write scratch memory.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| Clock Frequency-Max (fCLK) | 20MHz |
| I/O Type | SEPARATE |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Memory Density | 262144bit |
| Memory IC Type | STANDARD SRAM |
| Memory Width | 8 |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 32768words |
| Number of Words Code | 32000 |
| Operating Mode | SYNCHRONOUS |
| Organization | 32KX8 |
| Output Characteristics | 3-STATE |
| Output Enable | NO |
| 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 |
| Qualification Status | Not Qualified |
| Standby Current-Max | 0.000004A |
| Standby Voltage-Min | 2.7V |
| Supply Current-Max | 0.01mA |
| Supply Voltage-Max (Vsup) | 3.6V |
| Supply Voltage-Min (Vsup) | 2.7V |
| 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 |
| 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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What type and size of memory is the 23K256-I/SN?
The 23K256-I/SN is a 256Kbit (32KB) standard SRAM device with a serial SPI interface, offering volatile data storage with no write-cycle limitation, unlike EEPROM or Flash memory technologies.
What is the maximum SPI clock speed of the 23K256-I/SN?
The 23K256-I/SN supports a maximum SPI clock frequency of 20MHz, enabling fast data transfers to and from a host microcontroller, making it suitable for time-sensitive buffering and real-time data applications.
What package does the 23K256-I/SN use?
The 23K256-I/SN is available in an 8-pin SOIC (Small Outline Integrated Circuit) package, a widely used surface-mount format that simplifies PCB layout and allows for easy hand-soldering during prototyping.
How does the 23K256-I/SN differ from serial EEPROM?
Unlike serial EEPROM such as the 93LC46B, the 23K256-I/SN SRAM has no write endurance limit and offers faster write operations, though it is volatile and loses data when powered off — making it best for temporary data buffering rather than permanent storage.
Is the 23K256-I/SN suitable for Arduino or Raspberry Pi projects?
Yes, the 23K256-I/SN works seamlessly with Arduino, Raspberry Pi, and other platforms with SPI support. Its 20MHz interface and 8-pin SOIC package make it easy to wire and use as external SRAM for memory-hungry sketches or Linux applications.
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