W28J800B/T
8M(512K × 16/1M × 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........................................................................................................................... 6
5. PIN CONFIGURATION ....................................................................................................................... 6
6. PIN DESCRIPTION............................................................................................................................. 7
7. PRINCIPLES OF OPERATION........................................................................................................... 8
Data Protection ................................................................................................................................ 8
8. BUS OPERATION............................................................................................................................. 10
Read............................................................................................................................................... 10
Output Disable ............................................................................................................................... 10
Standby .......................................................................................................................................... 10
Reset.............................................................................................................................................. 10
Read Identifier Codes .................................................................................................................... 11
OTP (One Time Program) Block.................................................................................................... 12
Write............................................................................................................................................... 12
9. COMMAND DEFINITIONS................................................................................................................ 13
Read Array Command ................................................................................................................... 15
Read Identifier Codes Command................................................................................................... 15
Read Status Register Command ................................................................................................... 15
Clear Status Register Command ................................................................................................... 16
Block Erase Command .................................................................................................................. 16
Full Chip Erase Command............................................................................................................. 16
Word/Byte Write Command ........................................................................................................... 17
Block Erase Suspend Command................................................................................................... 17
Word/Byte Write Suspend Command............................................................................................ 18
Set Block and Permanent Lock-bit Commands............................................................................. 18
Clear Block Lock-bits Command.................................................................................................... 19
OTP Program Command ............................................................................................................... 20
Block Locking by the #WP ............................................................................................................. 20
Publication Release Date: November 18, 2002
- 1 -
Revision A3
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