M29W400BT datasheet(3/25 Pages) STMICROELECTRONICS

부품명	M29W400BT

상세설명	4 Mbit (512Kb x8 or 256Kb x16, Boot Block) Low Voltage Single Supply Flash Memory

PDF	25 Pages

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제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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M29W400BT, M29W400BB

Figure 4. TFBGA Connections (Top view through package)

AI03988

DQ15

A–1

DQ10

DQ8

DQ13

DQ11

DQ9

VSS

DQ6

DQ1

VSS

DQ14

A12

A17

A14

A10

DQ4

DQ3

VCC

DQ12

BYTE

A15

A11

A16

DQ7

DQ5

DQ2

DQ0

A13

The blocks in the memory are asymmetrically ar-

ranged, see Tables 3 and 4, Block Addresses. The

first or last 64 Kbytes have been divided into four

additional blocks. The 16 Kbyte Boot Block can be

used for small initialization code to start the micro-

processor, the two 8 Kbyte Parameter Blocks can

be used for parameter storage and the remaining

32K is a small Main Block where the application

may be stored.

Chip Enable, Output Enable and Write Enable sig-

nals control the bus operation of the memory.

They allow simple connection to most micropro-

cessors, often without additional logic.

The memory is offered in TSOP48 (12 x 20mm),

TFBGA48 (0.8mm pitch) and SO44 packages and

it is supplied with all the bits erased (set to ’1’).

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