SST49LF016C SST, SST49LF016C Datasheet - Page 15

• Manufacturer Part Number: SST49LF016C
• Description: 16 Mbit LPC Serial Flash
• Manufacturer: SST

16 Mbit LPC Serial Flash
SST49LF016C
Multiple Device Selection
Multiple LPC serial flash devices may be strapped to
increase memory densities in a system. The four ID pins,
ID[3:0], allow up to 16 devices to be attached to the same
bus by using different ID strapping in a system. BIOS sup-
port, bus loading, or the attaching bridge may limit this num-
ber. The boot device must have an ID of 0000b (determined
by ID[3:0]); subsequent devices use incremental number-
ing. Equal density must be used with multiple devices.
Multiple Device Selection for
Firmware Memory Cycle
For Firmware Memory Read/Write cycles, hardware strap-
ping values on ID[3:0] must match the values in IDSEL
field. The SST49LF016C will compare these bits with
ID[3:0]’s strapping values. If there is a mismatch, the device
will ignore the remainder of the cycle. See Table 7 for Multi-
ple Device Selection Configuration.
©2006 Silicon Storage Technology, Inc.
15
TABLE 7: Firmware Memory Multiple Device
Device #
0 (Boot device)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Selection Configuration
ID[3:0]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
S71237-07-000
Data Sheet
IDSEL
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
T7.0 1237
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