K5L5628JTM Datasheet, PDF (59/98 Pages) Samsung semiconductor – 256M Bit (16M x16) Synchronous Burst , Multi Bank NOR Flash / 128M Bit(8M x16) Synchronous Burst UtRAM

K5L5628JT(B)M
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MCP MEMORY
Start
Unlock Bypass Program Command
Sequence (see below)
DATA Polling or Toggle Bit
Algorithm(See Below)
NO
Address = Address + 1
Unlock Bypass Program
Command Sequence
(address/data)
555h/AAh
2AAh/55h
555h/20h
XXXh/A0h
Last Address?
YES
Program Completed
Unlock Bypass Reset
Command Sequence
(address/data)
XXXh/90h
XXXh/00h
Figure 15. Unlock Bypass Operation Flow Chart
Program Address/Program Data
Start
Read(DQ0~DQ7)
Valid Address
Start
Read(DQ0~DQ7)
Valid Address
Read(DQ0~DQ7)
Valid Address
DQ7 = Data ?
Yes
No
No
DQ5 = 1 ?
Yes
Read(DQ0~DQ7)
Valid Address
Yes
DQ7 = Data ?
No
Fail
Pass
Figure 1. Data Polling Algorithms
DQ6 = Toggle ?
No
Yes
No
DQ5 = 1 ?
Yes
Read twice(DQ0~DQ7)
Valid Address
No
DQ6 = Toggle ?
Yes
Fail
Pass
Figure 2. Toggle Bit Algorithms
59
Revision 1.0
November 2004