EM4550
The EM Microelectronic EM4550 is an LF 125 kHz RFID tag IC, with 1024 bits (128 bytes) EEPROM organized in 32 blocks of 32 bits each, operating at 125 kHz under EM Microelectronic proprietary LF protocol.
Read/write 125 kHz RFID IC with 1 Kbit EEPROM organized in 32 blocks for access control and identification
Full Specifications
| Manufacturer | EM Microelectronic |
|---|---|
| Frequency Category | LF 125 kHz |
| Frequency | 125 kHz |
| Protocol | EM Microelectronic proprietary LF protocol |
| Memory | 1024 bits (128 bytes) EEPROM organized in 32 blocks of 32 bits each |
| Interface | RF (contactless) |
| Temperature Range | -25°C to +85°C |
| Form Factor | Die (wafer) |
| Security | Password protection for read/write operations |
Engineering Brief
The EM4550 is a 125 kHz read/write RFID transponder IC featuring 1 Kbit of EEPROM memory organized into 32 blocks of 32 bits each. It supports password-protected read and write operations for secure data storage and retrieval in access control applications. The chip operates in the low-frequency band with contactless RF interface and is typically supplied as bare die for integration into various form factors including cards, key fobs, and tags.
Typical Applications
Standards & Compliance
Frequently Asked Questions
What is the memory capacity of the EM4550 RFID chip?
The EM4550 features 1024 bits (128 bytes) of EEPROM memory organized into 32 blocks of 32 bits each. This memory is read/write capable with password protection for both read and write operations.
What frequency does the EM4550 operate at?
The EM4550 operates at 125 kHz in the low-frequency (LF) RFID band using EM Microelectronic's proprietary protocol for contactless data communication.
Does the EM4550 support password protection?
Yes, the EM4550 provides password protection for both read and write operations, enabling secure data storage and retrieval in access control and identification applications.
How is the EM4550 memory organized?
The 1024-bit EEPROM is organized into 32 blocks, with each block containing 32 bits. This block structure allows for flexible data management and selective access to different memory regions.
What is the difference between EM4550 and EM4450?
Both are 125 kHz read/write transponders from EM Microelectronic, but the EM4550 typically offers 1024 bits of memory with 32-block organization, while the EM4450 is a related device in the same family with similar read/write functionality.
Can the EM4550 be used in card or key fob form factors?
Yes, the EM4550 is typically supplied as bare die and can be integrated into various form factors including cards, key fobs, tags, and other access control devices.
Explore
Cross-manufacturer alternatives
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