25CSM04-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
25CSM04-I/SN is a 4 Mbit SPI EEPROM from Microchip Technology, operating at up to 8 MHz clock frequency with 1,000,000 write/erase cycle endurance and 100-year data retention. Housed in an SOIC-8 package, it provides non-volatile storage for configuration data, calibration tables, and firmware parameters in embedded systems.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 25CSM04-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.8200(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
- 4 Mbit (512 KB) SPI serial EEPROM with up to 8 MHz clock speed
- 1,000,000 write/erase cycle endurance for high-reliability data logging
- 100-year minimum data retention ensures long-term configuration storage
- SOIC-8 package with standard 1.27 mm pitch for easy PCB assembly
- Industrial-grade reliability with JESD-609 e3 moisture sensitivity compliance
Applications
The 25CSM04-I/SN is commonly used in embedded systems to store device configuration settings, calibration coefficients, and factory parameters that must persist through power cycles. Industrial controllers, medical monitors, and smart meters use this EEPROM to hold operating parameters that can be updated in the field without reflashing main firmware. Its 4 Mbit density and 8 MHz SPI interface also make it suitable as a data logging buffer for sensors that need to retain recent measurements across unexpected power failures.
Specifications
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 14Weeks |
| YTEOL | 20 |
| Clock Frequency-Max (fCLK) | 8MHz |
| Data Retention Time-Min | 100 |
| Endurance | 1000000 Write/Erase Cycles |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Memory Density | 4194304bit |
| Memory IC Type | EEPROM |
| Memory Width | 8 |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 524288words |
| Number of Words Code | 512000 |
| Operating Mode | SYNCHRONOUS |
| Organization | 512KX8 |
| 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 | 5V |
| Serial Bus Type | SPI |
| Standby Current-Max | 0.000002A |
| Supply Current-Max | 0.003mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Write Cycle Time-Max (tWC) | 5ms |
| Write Protection | HARDWARE/SOFTWARE |
| 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 | Mainland China, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for 25CSM04-I/SN:
Microchip Technology Inc 4M SPI SEEPROM
suggested
suggested
Frequently Asked Questions
How many write cycles can the 25CSM04-I/SN endure, and what data retention period is guaranteed?
The 25CSM04-I/SN is rated for 1,000,000 write/erase cycles per address location and guarantees a minimum 100-year data retention at room temperature. These combined specifications make it suitable for applications with frequent configuration updates, such as industrial calibration systems, where both write endurance and long-term data integrity are critical requirements for device lifetime reliability.
At what maximum SPI clock frequency does the 25CSM04-I/SN operate, and how does this affect data throughput?
The 25CSM04-I/SN supports a maximum SPI clock frequency of 8 MHz, enabling sequential byte read throughput of up to 1 MB/s. This speed is adequate for reading 512 KB of stored configuration or calibration data within approximately 0.5 seconds, making startup latency acceptable for most embedded systems. For applications requiring faster access, the 8 MHz rate also supports fast-read commands available in the 25CSM04 family instruction set.
Which package does the 25CSM04-I/SN use, and how does it compare to smaller alternatives for board space?
The 25CSM04-I/SN is housed in an SOIC-8 package with a 1.27 mm lead pitch and approximately 5 mm x 4 mm footprint, which is larger than TSSOP-8 or WSON-8 alternatives but offers superior solderability and hand-rework capability. For designs where 4 Mbit EEPROM density is needed and PCB area allows 20 mm² of component footprint, the SOIC-8 is the preferred choice for prototyping and low-volume production due to its wide availability and proven assembly yield.
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