W19B320ATT7H【PDF 1/53 页】IC FLASH 32MBIT 70NS 48TSOP

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W19B320AT/B Data Sheet

4M × 8/2M × 16 BITS

3V FLEXIBLE BANK FLASH MEMORY

Table of Contents-

GENERAL DESCRIPTION ......................................................................................................... 4

FEATURES ................................................................................................................................. 4

PIN CONFIGURATIONS ............................................................................................................ 5

BLOCK DIAGRAM ...................................................................................................................... 6

PIN DESCRIPTION..................................................................................................................... 6

FUNCTIONAL DESCRIPTION ................................................................................................... 7

6.1

Device Bus Operation..................................................................................................... 7

6.1.1

6.1.2

6.1.3

6.1.4

6.1.5

6.1.6

6.1.7

6.1.8

6.1.9

6.1.10

6.1.11

6.1.12

6.1.13

6.1.14

Word/Byte Configuration ..................................................................................................7

Reading Array Data ..........................................................................................................7

Writing Commands/Command Sequences.......................................................................7

Simultaneous Read/Write Operations with Zero Latency .................................................8

Standby Mode ..................................................................................................................8

Automatic Sleep Mode .....................................................................................................8

#RESET: Hardware Reset Pin..........................................................................................9

Output Disable Mode........................................................................................................9

Autoselect Mode...............................................................................................................9

Sector/Sector Block Protection and Unprotection...........................................................9

Write Protect (#WP) .....................................................................................................10

Temporary Sector Unprotect ........................................................................................10

Security Sector Flash Memory Region .........................................................................10

Hardware Data Protection ............................................................................................11

6.2

Command Definitions ................................................................................................... 12

6.2.1

6.2.2

6.2.3

6.2.4

6.2.5

6.2.6

6.2.7

6.2.8

Reading Array Data ........................................................................................................12

Reset Command.............................................................................................................12

AUTOSELECT Command Sequence .............................................................................13

Byte/Word Program Command Sequence......................................................................13

Unlock Bypass Command Sequence .............................................................................14

Chip Erase Command Sequence ...................................................................................14

Sector Erase Command Sequence ................................................................................14

Erase Suspend/Erase Resume Commands ...................................................................15

6.3

Write Operation Status ................................................................................................. 16

6.3.1

6.3.2

6.3.3

DQ7: #Data Polling.........................................................................................................16

RY/#BY: Ready/#Busy ...................................................................................................16

DQ6: Toggle Bit I............................................................................................................16

Publication Release Date: December 27, 2005

-1-

Revision A4

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