Specifications

Physical Layer Simplified Specification Version 4.10

2. System Features

• Targeted for portable and stationary applications

• Capacity of Memory

(1) Standard Capacity SD Memory Card (SDSC): Up to and including 2 GB

(2) High Capacity SD Memory Card (SDHC): More than 2GB and up to and including 32GB

(3) Extended Capacity SD Memory Card (SDXC): More than 32GB and up to and including 2TB

• Voltage range:

High Voltage SD Memory Card – Operating voltage range: 2.7-3.6 V

UHS-II SD Memory Card – Operating voltage range VDD1: 2.7-3.6 V, VDD2: 1.70-1.95V

• Designed for read-only and read/write cards.

• Bus Speed Mode (using 4 parallel data lines)

(1) Default Speed mode: 3.3V signaling, Frequency up to 25 MHz, up to 12.5 MB/sec

(2) High Speed mode: 3.3V signaling, Frequency up to 50 MHz, up to 25 MB/sec

(3) SDR12: UHS-I 1.8V signaling, Frequency up to 25 MHz, up to 12.5MB/sec

(4) SDR25: UHS-I 1.8V signaling, Frequency up to 50 MHz, up to 25MB/sec

(5) SDR50: UHS-I 1.8V signaling, Frequency up to 100 MHz, up to 50MB/sec

(6) SDR104: UHS-I 1.8V signaling, Frequency up to 208 MHz, up to 104MB/sec

(7) DDR50: UHS-I 1.8V signaling, Frequency up to 50 MHz, sampled on both clock edges, up to

50MB/sec

(8) UHS156: UHS-II RCLK Frequency Range 26MHz - 52MHz, up to 1.56Gbps per lane.

• Switch function command supports Bus Speed Mode, Command System, Drive Strength, and

future functions

• Correction of memory field errors

• Card removal during read operation will never harm the content

• Content Protection Mechanism - Complies with highest security of SDMI standard.

• Password Protection of cards (CMD42 - LOCK_UNLOCK)

• Write Protect feature using mechanical switch

• Built-in write protection features (permanent and temporary)

• Card Detection (Insertion/Removal)

• Application specific commands

• Comfortable erase mechanism