23A640-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
The Microchip 23A640-I/SN is a 64Kbit (8K x 8) SPI serial SRAM operating at up to 16 MHz clock frequency with separate I/O. It supports 2.7V to 3.6V operation and sequential, byte, and page modes. Available in SOIC-8 package, in stock worldwide with fast shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 23A640-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.6200(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 23A640-I/SN?
- 64Kbit SPI SRAM with up to 16 MHz clock speed enabling fast data buffering in embedded systems
- Supports byte, sequential, and page operating modes for flexible memory access patterns
- 2.7V to 3.6V operating voltage with separate I/O for direct interfacing with 3.3V microcontrollers
- Compact SOIC-8 surface-mount package simplifies PCB layout in space-constrained designs
What is 23A640-I/SN used for?
The 23A640-I/SN is ideal as a data buffer or scratch-pad RAM in embedded systems where the microcontroller lacks sufficient internal SRAM. It is commonly used in data logging applications, audio and image processing buffers, and real-time control systems requiring temporary high-speed data storage. Its SPI interface allows easy daisy-chaining with other SPI peripherals, making it suitable for sensor nodes, industrial controllers, and communication modules.
What are the specifications of 23A640-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 |
| Memory Density | 65536bit |
| Memory IC Type | STANDARD SRAM |
| Memory Width | 8 |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 8192words |
| Number of Words Code | 8000 |
| Operating Mode | SYNCHRONOUS |
| Organization | 8KX8 |
| Output Characteristics | 3-STATE |
| Output Enable | NO |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Parallel/Serial | SERIAL |
| 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 |
| 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) |
| ECCN | EAR99 |
| HTS Code | 8542.32.00.51 |
| Country of Origin | Thailand |
Where can I find the 23A640-I/SN datasheet?
23A640-I/SN Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for 23A640-I/SN?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the memory capacity and interface of the 23A640-I/SN?
The 23A640-I/SN is a 64Kbit (8,192 x 8-bit) serial SRAM with an SPI interface. It supports clock frequencies up to 16 MHz and offers byte, page, and sequential access modes, making it flexible for a wide range of embedded data buffering applications.
What supply voltage does the 23A640-I/SN require?
The 23A640-I/SN operates from a 2.7V to 3.6V supply voltage, making it fully compatible with 3.3V microcontroller systems. The separate I/O voltage architecture allows it to interface cleanly with most modern SPI-based MCUs without additional level translation.
What package does the 23A640-I/SN come in?
The 23A640-I/SN is housed in a standard SOIC-8 surface-mount package. This widely used 8-pin package has a small footprint that simplifies PCB design and automated soldering, and it is compatible with a broad range of standard SOIC-8 footprints on existing board designs.
What are the access modes supported by the 23A640-I/SN?
The 23A640-I/SN supports three access modes: byte mode for single-byte read/write operations, page mode for accessing a 32-byte page, and sequential mode for continuous data streaming across the full 8KB address space. These modes provide flexibility for both random and streaming data access patterns.
Can the 23A640-I/SN be used as an external RAM expansion for microcontrollers?
Yes, the 23A640-I/SN is commonly used to expand the RAM of microcontrollers that have limited internal SRAM. Since it uses a 4-wire SPI interface (SCK, SI, SO, CS), it only requires 4 GPIO pins and is compatible with virtually any microcontroller that has an SPI peripheral, including Microchip PIC, AVR, and ARM Cortex-M families.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.8100 | $0.81 |
| 10+ | $0.8090 | $8.09 |
| 100+ | $0.6900 | $69.00 |
| 1000+ | $0.6600 | $660.00 |
| 5000+ | $0.6200 | $3100.00 |
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