Serial ATA Flash Drive

APS1845Xxxxx-PXX

4

© 2013 Apacer Technology Inc.

Rev. 1.5

1.3

ATA Mode Support

SAFD18S4 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 SAFD18S4 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*

4 GB

4,011,614,208

7,773

16

63

7,835,184

8 GB

8,012,390,400

15,525

16

63

15,649,200

16 GB

16,013,942,784

16,383

16

63

31,277,232

32 GB

32,017,047,552

16,383

16

63

62,533,296

64 GB

64,023,257,088

16,383

16

63

125,045,424

*Display of total bytes varies from file systems.

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

LBA count addressed in the table above indicates total user storage capacity and will remain the same throughout the lifespan of

the device. However, the total usable capacity of the SSD is most likely to be less than the total physical capacity because a small

portion of the capacity is reserved for device maintenance usages.

1.5

Performance

Performance of SAFD18S4 is shown in Table 1-2.

Table 1-2 Performance specification

Capacity

Performance

4 GB

8 GB

16 GB

32 GB

64 GB

Sustained Read

(MB/s)

145

155

155

160

165

Sustained Write

(MB/s)

50

105

105

145

150

Note: Performance varies from flash configurations or host system settings.