Preliminary W28J320B/T
32M(2M
´ 16/4M ´ 8)
BOOT BLOCK FLASH MEMORY
Table of Contents-
1. GENERAL DESCRIPTION ..................................................................................................................3
2. FEATURES..........................................................................................................................................3
3. PRODUCT OVERVIEW.......................................................................................................................4
4. BLOCK DIAGRAM ...............................................................................................................................5
Block Organization............................................................................................................................5
5. PIN CONFIGURATION........................................................................................................................6
6. PIN DESCRIPTION..............................................................................................................................7
7. PRINCIPLES OF OPERATION............................................................................................................8
Data Protection .................................................................................................................................8
8. BUS OPERATION..............................................................................................................................11
Read ...............................................................................................................................................11
Output Disable ................................................................................................................................11
Standby...........................................................................................................................................11
Reset...............................................................................................................................................11
Read Identifier Codes .....................................................................................................................12
OTP(One Time Program) Block .....................................................................................................13
Write ...............................................................................................................................................13
9. COMMAND DEFINITIONS ................................................................................................................14
Read Array Command....................................................................................................................16
Read Identifier Codes Command ...................................................................................................16
Read Status Register Command....................................................................................................16
Clear Status Register Command....................................................................................................17
Block Erase Command...................................................................................................................17
Full Chip Erase Command..............................................................................................................17
Word/Byte Write Command............................................................................................................18
Block Erase Suspend Command....................................................................................................18
Word/Byte Write Suspend Command ............................................................................................19
Set Block and Permanent Lock-Bit Commands .............................................................................19
Clear Block Lock-Bits Command....................................................................................................20
OTP Program Command................................................................................................................20
Block Locking by the #WP..............................................................................................................21
Publication Release Date: June 12, 2002
- 1 -
Revision A1