Something about BIOS chips:
Here is some info about the BIOS chips:
PLCC-32 is like this,32 pins (9x7 pins)
, and
DIP-32 is like this,also 32 pins.
.
Most routers and VOIP devices, PDAs, and many laptops are using TSOP chips, TSOP-32, TSOP-40 or TSOP-48 chips like this one:
What is LPC/FWH chips?
Low Pin Count (LPC):
AT49LL040,
PM49LP002,
SST49LF020, SST49LF040A,
ST M50LPW002, M50LPW040,
W49V002, W49V040AP
Firmware Hub (FWH)
Intel 82802AB, 82802AC, E82802AC,
AT49LW040, AT49LW080,
SST49LF002A, SST49LF003A, SST49LF004A, SST49LF008A
ST M50FW002, M50FW040,
W49V002F, W49V040FA
What is SPI chips?
Serial Peripheral Interface(SPI) is a new type of BIOS, that becomes more and more popular on modern motherboards.
If the chip model number start with 25 or 45, and has 8 pins, then, it should be a SPI chip.
This is a DIP-8 chip, may on a socket.
This is a SOP-8 chip, soldered on the board.
SST25VF020 SST25LF020A M25P20 M45PE20 NX25P20 AT25F2048 AT45DB021B SA25F020 AM29LV200BB
SST25VF040 SST25LF040A M25P40 M25PE40 M45PE40 NX25B40 NX25P40 AT25F4096 AT45DB041B SA25F040
SST25LF080A M25P80 M45PE80 NX25P80 AT45DB081B SA25F080
MX 25L8005PC 25L8005MC W25X80
Toshiba X200, X205 laptop BIOS,
INTEL motherboard 975XBX2KR BIOS
INTEL motherboard D945GCPE BIOS(in the top-right corner), closer view
INTEL motherboard DX38BT BIOS.