User's Manual

ACR1281S

 Advanced Card Systems Ltd. Page 42 of 56

2.3 Read Binary Blocks

The “Read Binary Blocks command” is used for retrieving a multiple of “data blocks” from the

PICC. The data block/trailer block must be authenticated first before executing the “Read Binary

Blocks command”.

Table 2.3-1a: Read Binary APDU Format (5 Bytes)

Command

Class INS P1 P2 Le

Read Binary

Blocks

FF B0 00 Block

Number

of Bytes

to Read

Block Number (1 Byte):

The starting block.

Number of Bytes to Read (1 Byte):

Multiply of 16 bytes for MIFARE 1K/4K or Multiply of 4 bytes for MIFARE Ultralight

• Maximum 16 bytes for MIFARE Ultralight.

• Maximum 48 bytes for MIFARE 1K. (Multiple Blocks Mode; 3 consecutive blocks)

• Maximum 240 bytes for MIFARE 4K. (Multiple Blocks Mode; 15 consecutive blocks)

Example 1: 0x10 (16 bytes). The starting block only. (Single Block Mode)

Example 2: 0x40 (64 bytes). From the starting block to starting block+3. (Multiple Blocks Mode)

#For safety reason, the Multiple Block Mode is used for accessing Data Blocks only. The Trailer

Block is not supposed to be accessed in Multiple Blocks Mode. Please use Single Block Mode to

access the Trailer Block.

Table 2.3-1b: Read Binary Block Response Format (Multiply of 4/16 + 2 Bytes)

Response

Data Out

Result

Data (Multiply of 4/16 Bytes)

SW1 SW2

Table 2.3-1c: Read Binary Block Response Codes

Results

SW1 SW2 Meaning

Success 90 00 The operation is completed

successfully.

Error

63 00 The operation is failed.

Examples:

// Read 16 bytes from the binary block 0x04 (MIFARE 1K or 4K)

APDU = {FF B0 00 04 10}

// Read 240 bytes starting from the binary block 0x80 (MIFARE 4K)

// Block 0x80 to Block 0x8E (15 blocks)

APDU = {FF B0 00 80 F0}