# Mifare Ultralight EV1 The **Mifare Ultralight EV1** is a contactless smart card IC from NXP Semiconductors, designed for applications requiring cost-effective, limited-memory solutions. Based on my experience working with RFID systems, I've found the EV1 particularly useful for disposable ticketing, event access, and loyalty cards. Its balance of affordability and functionality makes it a go-to choice for projects with high-volume, low-security needs. ## Personal Experience and Views In one project, I used the **Mifare Ultralight EV1** for a museum's temporary exhibition tickets. The cards were encoded with visit dates and entry times, allowing efficient crowd management. I appreciated how straightforward the EV1 was to integrate compared to more complex chips. However, its limited memory and basic security mean it's not suitable for high-value transactions—a point worth considering during system design. ## Talent and Skill Application My ability to quickly prototype RFID solutions was enhanced by understanding the **Mifare Ultralight EV1**. For instance, I developed a simple inventory-tracking system for a small library using these tags. By writing book IDs and status codes to the EV1's memory, staff could scan items with standard NFC phones, demonstrating how accessible technology can solve everyday problems. ## Technical Specifications and Parameters Below are the key technical indicators and detailed parameters for the **Mifare Ultralight EV1**. *Note: These technical parameters are for reference only; specifics should be confirmed by contacting backend management.* ### Physical and Electrical Characteristics - **Dimensions (chip):** 1.0 mm x 1.0 mm (typical) - **Operating Frequency:** 13.56 MHz - **Communication Interface:** ISO/IEC 14443 Type A - **Operating Distance:** Up to 10 cm (depending on reader) - **Supply Voltage:** 2.5 V to 5.5 V (from RF field) ### Memory Structure - **Total Memory:** 512 bits (organized as 16 pages of 4 bytes each) - **User Memory:** 384 bits (pages 4 to 15) - **OTP (One-Time Programmable) Memory:** 128 bits (pages 0 to 3, partially locked) - **UID (Unique Identifier):** 7-byte serial number (stored in pages 0-2) ### Security Features - **Chip Code:** NXP part number: MF0ULx1 - **Authentication:** 16-bit proprietary protocol - **Data Protection:** Lock bits per page, OTP