HY29LV160 Datasheet, PDF (43/48 Pages) Hynix Semiconductor – 16 Mbit (2M x 8/1M x 16) Low Voltage Flash Memory

HY29LV160
AC CHARACTERISTICS
Sector Protection and Unprotection Using Programming Equipment
Parameter
JEDEC Std
Description
Speed Option
Unit
- 70 - 80 - 90 - 12
t_VIDR
t_ST
t_OE
t_WPP1
t_WPP2
t_OESP
t_CSP
Voltage Transition Time ¹
Voltage Setup Time
Output Enable to Output Delay
Write Pulse Width for Sector Protect Operation
Write Pulse Width for Sector Unprotect Operation
OE# Setup Time to WE# Active ¹
CE# Setup Time to WE# Active ¹
Min
500
ns
Min
4
µs
Max 30 30 35 50 ns
Min
150
µs
Min
15
ms
Min
4
µs
Min
4
µs
Notes:
1. Not 100% tested.
START
APPLY V _CC
Set TRYCNT = 1
A9 = OE# = V _ID
Set Address:
A[19:12] = Sector to Protect
CE# = A[6] = A]0] = V _IL
RESET# = A[1] = V _IH
Wait 4 us
WE# = V _IL
Wait 150 us
A[9] = V _ID
A[19:12] = Sector to Protect
OE# = CE# = V _IL
A[6] = A[0] = V _IL
WE# = RESET# = A[1] = V _IH
Wait 4 us
Read Data
NO
Data = 0x01?
YES
Protect Another
NO
Sector?
YES
Increment TRYCNT
NO
TRYCNT = 25?
YES
DEVICE FAILURE
Remove V _ID from A[9]
Write Reset Command
SECTOR PROTECT
COMPLETE
Figure A1. Sector Protection Using Programming Equipment
Rev. 1.2/May 01
43