23K640-I/P Microchip Integrated Circuit (Dual-In-Line Packages) In Stock
Microchip 23K640-I/P is a 64 Kbit SPI serial SRAM with an 8-bit wide data bus and up to 20 MHz clock interface in a compact 8-pin DIP package. It supports byte, page, and sequential access modes for flexible memory management. Available from stock worldwide.
- Manufacturer
- Microchip
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 23K640-I/P Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4500(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 64 Kbit (8K x 8-bit) serial SRAM with up to 20 MHz SPI clock for fast data access
- Supports byte, sequential, and page read/write modes enabling efficient bulk data transfer
- 8-pin DIP-8 package simplifies integration into microcontroller-based designs with minimal PCB space
Applications
The 23K640-I/P serves as an external SPI data buffer for microcontrollers needing more RAM than their internal SRAM provides, such as in audio sample buffers, network packet queues, and data logging nodes. Its 20 MHz SPI clock enables rapid data transfers in real-time embedded applications. The DIP-8 package makes it easy to add 64 Kbits of volatile storage to existing breadboard or through-hole prototypes.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | PDIP-8 |
| Factory Lead Time | 8Weeks |
| YTEOL | 8 |
| Clock Frequency-Max (fCLK) | 20MHz |
| I/O Type | SEPARATE |
| JESD-30 Code | R-PDIP-T8 |
| 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 | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Parallel/Serial | SERIAL |
| Qualification Status | Not Qualified |
| Standby Current-Max | 0.000001A |
| 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 | NO |
| Technology | CMOS |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| 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
How much memory does the 23K640-I/P provide and at what maximum SPI clock rate?
The 23K640-I/P provides 64 Kbits (8,192 bytes) of SRAM organized as 8K x 8 bits, accessible over SPI at a maximum clock frequency of 20 MHz. This combination allows a full 8 KB read or write in approximately 3.3 µs at maximum speed.
Which microcontroller applications benefit from adding the 23K640-I/P as external SPI SRAM?
Microcontrollers with limited internal SRAM, such as PIC or AVR devices with 512 bytes to 2 KB on-chip, gain an additional 8 KB by connecting the 23K640-I/P over a 4-wire SPI bus at 20 MHz. Typical use cases include audio playback buffers, sensor data caches, and network socket buffers in embedded networking stacks.
What read/write modes does the 23K640-I/P support and how do they improve data throughput?
The 23K640-I/P supports three access modes: byte mode for single random accesses, sequential mode for continuous address-incrementing burst reads up to 8 KB, and page mode for 32-byte block transfers. Sequential mode at 20 MHz maximizes throughput by streaming data without repeated address commands.
How does the 8-pin DIP package of the 23K640-I/P simplify prototyping versus surface-mount SRAM alternatives?
The DIP-8 package inserts directly into standard 0.1-inch breadboards and 8-pin DIP sockets, requiring no soldering adapter or reflow process. This accelerates hardware prototyping cycles for designs needing 64 Kbits of external volatile storage accessed via a standard 3.3 V or 5 V SPI bus.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.4500 | $0.45 |
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