■ GENERAL DESCRIPTION

The MBM29F400TC/BC is a 4M-bit, 5.0 V-only Flash memory organized as 512K bytes of 8 bits each or 256K words of 16 bits each. The MBM29F400TC/BC is offered in a 48-pin TSOP and 44-pin SOP packages. This device is designed to be programmed in-system with the standard system 5.0 V VCC supply. 12.0 V VPP is not required for write or erase operations. The devices can also be reprogrammed in standard EPROM programmers.

■ FEATURES

? Single 5.0 V read, write, and erase

Minimizes system level power requirements

? Compatible with JEDEC-standard commands

Uses same software commands as E2PROMs

? Compatible with JEDEC-standard world-wide pinouts

48-pin TSOP (Package suffix: PFTN – Normal Bend Type, PFTR – Reversed Bend Type)

44-pin SOP (Package suffix: PF)

? Minimum 100,000 write/erase cycles

? High performance

55 ns maximum access time

? Sector erase architecture

One 16K byte, two 8K bytes, one 32K byte, and seven 64K bytes.

Any combination of sectors can be concurrently erased. Also supports full chip erase.

? Boot Code Sector Architecture

T = Top sector

B = Bottom sector

? Embedded EraseTM Algorithms

Automatically pre-programs and erases the chip or any sector

? Embedded ProgramTM Algorithms

Automatically writes and verifies data at specified address

? Data Polling and Toggle Bit feature for detection of program or erase cycle completion

? Ready/Busy output (RY/BY)

Hardware method for detection of program or erase cycle completion

? Low Vcc write inhibit ≤ 3.2 V

? Erase Suspend/Resume

Suspends the erase operation to allow a read in another sector within the same device

? Hardware RESET pin

Resets internal state machine to the read mode

? Sector protection

Hardware method disables any combination of sectors from write or erase operations

? Temporary sector unprotection

Temporary sector unprotection via the RESET pin.