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M50FLW040A Datasheet(PDF) 1 Page - STMicroelectronics

Part No. M50FLW040A
Description  4 Mbit (5 x 64KByte Blocks 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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M50FLW040A Datasheet(HTML) 1 Page - STMicroelectronics

 
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PRELIMINARY DATA
August 2004
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
M50FLW040A
M50FLW040B
4 Mbit (5 x 64KByte Blocks + 3 x 16 x 4KByte Sectors)
3V Supply Firmware Hub / Low Pin Count Flash Memory
FEATURES SUMMARY
s
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 33MHz PCI clock
s
8 BLOCKS OF 64 KBYTES
5 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 (M50FLW040A)
One block at the top and two at the bottom
(M50FLW040B)
s
ENHANCED SECURITY
Hardware Write Protect Pins for Block
Protection
Register-based Read and Write
Protection
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SUPPLY VOLTAGE
–VCC = 3 to 3.6V for Program, Erase and
Read Operations
–VPP = 12V for Fast Program and Erase
s
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.
s
PROGRAMMING TIME: 10µs typical
s
PROGRAM/ERASE CONTROLLER
Embedded Program and Erase algorithms
Status Register Bits
Figure 1. Packages
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PROGRAM/ERASE SUSPEND
Read other Blocks/Sectors during
Program Suspend
Program other Blocks/Sectors during
Erase Suspend
s
ELECTRONIC SIGNATURE
Manufacturer Code: 20h
Device Code (M50FLW040A): 08h
Device Code (M50FLW040B): 28h
TSOP32 (NB)
8 x 14mm
PLCC32 (K)
TSOP40 (N)
10 x 20mm


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