8 Mbit Firmware Hub
SST49LF008A
Data Sheet
ELECTRICAL SPECIFICATIONS
The AC and DC specifications for the FWH Interface signals (FWH[3:0], CLK, FWH4, and RST#) as defined in Section
4.2.2 of the PCI Local Bus Specification, Rev. 2.1. Refer to Table 10 for the DC voltage and current specifications. Refer
to the tables on pages 23 through 27 for the AC timing specifications for Clock, Read/Write, and Reset operations.
Absolute Maximum Stress Ratings (Applied conditions greater than those listed under “Absolute Maximum
Stress Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation
of the device at these conditions or conditions greater than those defined in the operational sections of this data
sheet is not implied. Exposure to absolute maximum stress rating conditions may affect device reliability.)
Temperature Under Bias . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55°C to +125°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C
D. C. Voltage on Any Pin to Ground Potential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to VDD+0.5V
Transient Voltage (<20 ns) on Any Pin to Ground Potential1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -2.0V to VDD+2.0V
Package Power Dissipation Capability (TA=25°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0W
Surface Mount Solder Reflow Temperature2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C for 10 seconds
Output Short Circuit Current3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
1. Do not violate processor or chipset limitations on the INIT# pin.
2. Excluding certain with-Pb 32-PLCC units, all packages are 260°C capable in both non-Pb and with-Pb solder versions.
Certain with-Pb 32-PLCC package types are capable of 240°C for 10 seconds; please consult the factory for the latest information.
3. Outputs shorted for no more than one second. No more than one output shorted at a time. This note applies to non-PCI outputs.
OPERATING RANGE
Range
Ambient Temp
VDD
Commercial
0°C to +85°C
3.0-3.6V
1
AC CONDITIONS OF TEST
Input Rise/Fall Time . . . . . . . . . . . . . . . 3 ns
Output Load . . . . . . . . . . . . . . . . . . . . . CL = 30 pF
See Figures 23 and 24
1. FWH interface signals use PCI load test conditions
©2006 Silicon Storage Technology, Inc.
S71161-11-000
3/06
21
SST [ SILICON STORAGE TECHNOLOGY, INC ]
