Serial ATA Flash Drive

AP-SAFD254QAxxxxS-XXHT

5

©2011 Apacer Technology Inc.

Rev. 1.5

1.3

ATA Mode Support

The SAFD 254 provides ATA mode support as follows:

Up to PIO mode-4

Up to Multiword DMA mode-2

Up to UDMA mode-5

1.4

Capacity Specification

Capacity specification of the SAFD product family is available as shown in Table 1-1. It lists the specific

capacity, the default numbers of logical cylinders and heads, and the number of logical sectors per track for

each product line.

Table 1-1 Capacity specification

Capacity

Total Bytes

Cylinders

Heads

Sectors

Max LBA*

8 GB

8,061,419,520

15620

16

63

15,744,960

16 GB

16,139,681,792

16383

16

63

31,522,816

32 GB

32,296,140,800

16383

16

63

63,078,400

64 GB

64,609,058,816

16383

16

63

126,189,568

128 GB

129,234,894,848

16383

16

63

252,411,904

*Cylinders, heads or sectors are not applicable for these capacities. Only LBA addressing applies.

1.5

Performance

Performance of the SAFD is shown in Table 1-2.

Table 1-2 Performance specification

Capacity

Performance

8GB

16GB

32GB

64GB

128GB

Sustained Read

(MB/s)

168

160

167

167

167

Sustained Write

(MB/s)

91

143

135

138

138

Note: Performances vary from different configurations.