23A256-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
The 23A256-I/SN is a 256K-bit (32K x 8) SPI serial SRAM from Microchip with a fast 16 MHz maximum clock and separate I/O pins in an SOIC-8 package. Key specs: 262,144 bits total density, RoHS-compliant lead-free construction, 6-week factory lead time. Available in stock with competitive pricing and worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 23A256-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4100(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 23A256-I/SN?
- 256K-bit (32K×8) SPI SRAM delivering fast random-access volatile storage with up to 16 MHz clock frequency
- Separate DI/DO (separate I/O) architecture enabling full-duplex SPI communication for maximum data throughput
- Byte, page, and sequential read/write modes providing flexible memory access patterns for diverse embedded applications
- RoHS-compliant SOIC-8 package with standard SPI interface supported natively by virtually all microcontrollers
What is 23A256-I/SN used for?
The 23A256-I/SN is ideal for microcontroller-based systems that need additional volatile RAM for data buffering, audio sample storage, network packet buffering, and temporary data caching beyond what is available on-chip. It is commonly used in Arduino, PIC, and ARM Cortex-M designs for storing sensor data arrays, display framebuffers, and communication protocol buffers. The standard SPI interface and SOIC-8 package make it a straightforward RAM expansion solution for any embedded system with an available SPI bus.
What are the specifications of 23A256-I/SN?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| Clock Frequency-Max (fCLK) | 16MHz |
| 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 | 0.000001A |
| Standby Voltage-Min | 1.5V |
| Supply Current-Max | 0.01mA |
| Supply Voltage-Max (Vsup) | 1.95V |
| Supply Voltage-Min (Vsup) | 1.5V |
| Supply Voltage-Nom (Vsup) | 1.8V |
| 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 |
Where can I find the 23A256-I/SN datasheet?
23A256-I/SN Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for 23A256-I/SN?
Compatible alternatives and drop-in replacements for 23A256-I/SN:
suggested
suggested
suggested
Frequently Asked Questions
What is the memory capacity and organization of the 23A256-I/SN?
The 23A256-I/SN provides 256K bits of SRAM storage organized as 32,768 bytes (32K x 8). As a volatile SRAM, data is lost when power is removed, making it suitable for temporary data buffers, working memory expansion, and real-time data caching rather than non-volatile configuration storage.
What serial interface does the 23A256-I/SN use and how fast is it?
The 23A256-I/SN uses a standard 4-wire SPI interface (SCK, CS, SI, SO) with separate data input and output pins, supporting a maximum clock frequency of 16 MHz. This high-speed SPI interface enables rapid data transfers and is directly compatible with the hardware SPI peripherals of all major microcontroller families.
What access modes does the 23A256-I/SN support?
The 23A256-I/SN supports multiple access modes including byte mode (single-byte read/write), sequential mode (continuous automatic address increment across the entire 32K address space), and page mode. Sequential mode is particularly useful for burst data transfers such as audio buffering, display updates, or network packet handling.
What package is the 23A256-I/SN available in and is it RoHS compliant?
The 23A256-I/SN is supplied in an SOIC-8 (Small Outline IC, 8-pin) surface-mount package compliant with JEDEC JESD-30 code R-PDSO-G8. The device is RoHS-compliant (Pb-free, JESD-609 e3), making it suitable for use in all lead-free manufacturing processes and environmentally regulated consumer and industrial products.
What are typical use cases for the 23A256-I/SN in embedded systems?
The 23A256-I/SN is widely used for RAM expansion in microcontroller systems with limited on-chip SRAM, such as PIC, AVR, and STM32 platforms. Common use cases include data logging buffers, display framebuffers, network receive/transmit queues, audio sample storage, and temporary variable storage during complex computations — wherever fast, byte-addressable volatile memory is needed beyond internal MCU resources.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.4100 | $0.41 |
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