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M50FLW080A

8-Mbit (13 x 64-Kbyte Blocks + 3 × 16 × 4 Kbyte Sectors) 3-V supply, Firmware Hub / low-pin-count Flash memory

STMicroelectronics 

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

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