HY29LV320 Datasheet, PDF (17/44 Pages) Hynix Semiconductor – 32 Mbit (2M x 16) Low Voltage Flash Memory

Table 9. HY29LV320 Command Sequences
Bus Cycles ^{1, 2, 3, 4}
Command Sequence
Write
First
Second
Third
Fourth
Fifth
Sixth
Cycles _{Add Data Add Data Add Data Add Data Add Data Add Data}
Read
Reset ⁷
Enter Sec ² Region
Exit Sec ² Region
Normal Program
Unlock Bypass
Unlock Bypass Reset ⁶
Unlock Bypass Program ⁵
Chip Erase
Sector Erase ⁹
Erase Suspend ⁷
Erase Resume ⁸
Manufacturer Code
Device Code
Sector Protect Verify
0
RA
RD
1 XXX F0
3
555 AA 2AA 55
555
88
4
555 AA 2AA 55
555 90 XXX 00
4
555 AA 2AA 55
555
A0
PA
PD
3
555 AA 2AA 55
555 20
2
XXX
90 XXX
00
2
XXX A0
PA
PD
6
555 AA 2AA 55
555
80
555
AA 2AA
55
555
10
6
555 AA 2AA 55
555
80
555
AA 2AA
55
SA
30
1 XXX B0
1 XXX 30
3
555 AA 2AA 55
555
90 XXX00 00AD
3
555 AA 2AA 55
555
90 XXX01 Bottom Boot = 227D, Top Boot = 227E
3
555 AA 2AA 55
555
90
(SA)X02
XX00 = Unprotected Sector
XX01 = Protected Sector
Sec² Region Indicator Bit
3
555 AA 2AA 55
555
90
XXX03
XX00 = NOT protected and locked at factory
XX80 = Protected and locked at factory
Common Flash Interface (CFI) Query ¹⁰
1 XXX55 98
Legend:
X = Don’t Care
PA/PD = Memory address/data for the program operation
RA/RD = Memory address/data for the read operation
SA = A[20:12], sector address of the sector to be erased or verified (see Tables 1 and 2).
Notes:
1. All values are in hexadecimal.
2. All bus cycles are write operations except all cycles of the Read command and the fourth cycle of Electronic ID command.
3. Data bits DQ[15:8] are don’t cares except for ‘PD’ in program cycles.
4. Address is A[10:0]. Other (upper) address bits are don’t cares except when ‘SA’ or ‘PA’ is required.
5. The Unlock Bypass command is required prior to the Unlock Bypass Program command.
6. The Unlock Bypass Reset command is valid only while the device is in the Unlock Bypass mode.
7. The Erase Suspend command is valid only during a sector erase operation. The system may read and program in non-erasing sectors, or enter the Electronic
ID mode, while in the Erase Suspend mode.
8. The Erase Resume command is valid only during the Erase Suspend mode.
9. Multiple sectors may be specified for erasure. See command description.
10.See CFI section of specification for additional information.
11. See Electronic ID section of specification for additional information.