47L04-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip 47L04 is a 4 Kbit (512 byte) SPI EEPROM plus SRAM hybrid memory IC in an SOIC-8 package, offering 400 ns access time and 1 million write cycle endurance. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 47L04-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5800(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
- Dual-memory architecture combining 4 Kbit EEPROM and SRAM in one SOIC-8 package for zero-wait-state reads
- Fast 400 ns max access time over SPI up to 10 MHz, enabling quick non-volatile data retrieval in embedded systems
- 1 million write cycle endurance with hardware write protection pin for reliable data logging applications
Applications
The 47L04-I/SN is suited for embedded systems that need fast scratch-pad SRAM and persistent EEPROM storage in a minimal footprint, such as sensor nodes recording calibration constants and measurement buffers. It is also used in smart meters, industrial PLCs, and IoT gateway modules where SPI bus access and low-power operation from a 1.8 V to 5.5 V supply are priorities.
Specifications
| Manufacturer Package Code | SOIC-8 |
| Date Of Intro | 2016-10-10 |
| YTEOL | 19 |
| Access Time-Max | 400ns |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Memory Density | 4096bit |
| Memory IC Type | MEMORY CIRCUIT |
| Memory Width | 8 |
| Mixed Memory Type | EEPROM+SRAM |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 512words |
| Number of Words Code | 512 |
| Operating Mode | SYNCHRONOUS |
| Organization | 512X8 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.23 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Supply Voltage-Max (Vsup) | 3.6V |
| Supply Voltage-Min (Vsup) | 2.7V |
| 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
Compatible alternatives and drop-in replacements for 47L04-I/SN:
Frequently Asked Questions
How does 47L04-I/SN combine EEPROM and SRAM, and what access time does the SRAM side provide?
The 47L04 integrates 4 Kbit EEPROM (512 bytes) for non-volatile storage alongside an SRAM array for zero-wait-state reads, with a maximum SPI access time of 400 ns at up to 10 MHz clock. The SRAM mirrors the EEPROM contents on power-up so firmware can read and write at full bus speed without the EEPROM's write latency.
In which voltage environments can 47L04-I/SN operate, making it compatible with low-power sensor nodes?
The 47L04 operates from 1.8 V to 5.5 V supply, covering single-cell LiPo at 3.7 V, regulated 3.3 V microcontroller rails, and legacy 5 V systems. This broad range removes the need for voltage level shifters in mixed-voltage sensor nodes, reducing BOM cost and board space by eliminating at least 1 external component.
How many write cycles can 47L04-I/SN sustain, and how should a data-logger design account for endurance limits?
Microchip specifies 1 million write cycles for the 47L04 EEPROM cells. A data logger recording 1 write per second would reach this limit after approximately 11.6 days of continuous operation, so designs should implement wear leveling across the 64 available 8-byte pages or limit EEPROM writes to configuration data updated infrequently.
How small is the 47L04-I/SN package, and does it fit on a compact 2-layer IoT board?
The SOIC-8 package measures 4.9 mm x 3.9 mm with 1.27 mm pin pitch, occupying less than 20 mm² of board area. On a typical 2-layer IoT board, the 47L04 can sit adjacent to a microcontroller SPI bus with only 4 signal traces (CS, SCK, SI, SO) plus power and ground, keeping the memory sub-circuit within a 10 mm x 15 mm region.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.7000 | $0.70 |
| 25+ | $0.6720 | $16.80 |
| 100+ | $0.6500 | $65.00 |
| 1000+ | $0.6100 | $610.00 |
| 5000+ | $0.5800 | $2900.00 |
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