8 Mbit (13 x 64KByte Blocks 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory
Description
www.
DataSheet4U.
com
M50FLW080A M50FLW080B
8-Mbit (13 x 64-Kbyte Blocks + 3 × 16 × 4 Kbyte Sectors) 3-V supply, Firmware Hub / low-pin-count Flash memory
Feature summary
■
Flash memory – Compatible with either the LPC interface or the FWH interface (Intel Spec rev1.
1) used in PC BIOS applications – 5-signal communication interface supporting Read and Write operations – 5 additional general-purpose inputs for platform design flexibility – Synchronized with 33 MHz PCI clock 16 blocks of 64 Kbytes – 13 blocks of 64 Kbytes each – 3 blocks, subdivided into 16 uniform sectors of 4 Kbytes each Two blocks at the top and one at the bottom (M50FLW080A) One block at the top and two at the bottom (M50FLW080B) Enhanced security – Hardware Write Protect pins for block protection – Register-based Read and Write Protection – Individual Lock Register for each 4 KByte sector Supply voltage – VCC = 3.
0 to 3.
6 V for Program, Erase and Read operations – VPP = 12 V for Fast Program and Erase Two interfaces – Auto Detection of Firmware Hub (FWH) or Low Pin Count (LPC) memory cycles for embedded operation with PC chipsets – Address/Address Multiplexed (A/A Mux) interface for programming equipment compatibility.
Programming time: 10 µs typical
PLCC32 (K)
■
TSOP32 (NB) 8 × 14 mm
■
TSOP40 (N) 10 × 20 mm
■
■
Program/Erase Controller – Embedded Program and Erase algorithms – Status Register bits Program/Erase Suspend – Read other Blocks/Sectors during Program Suspend – Program other Blocks/Sectors during Erase Suspend ELectronic signature – Manufacturer Code: 20h – Device Code (M50FLW080A): 80h – Device Code (M50FLW080B): 81h Packages – ECOPACK® (RoHS compliant)
■
■
■
■
■
October 2006
Rev 4
1/64
www.
st.
com 1
Contents
www.
DataSheet4U.
com M50FLW080A, M50FLW080B
Contents
1 2 Summary description .
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
7 Signal descriptions .
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
13
...
Similar Datasheet
