IRA-E700 Datasheet, PDF (55/86 Pages) Murata Manufacturing Co., Ltd. – Dual Type Pyroelectric Infrared Sensor

Data Sheet (Advance Information)
Figure 7.2 PPB Program/Erase Algorithm
Enter PPB
Command Set.
Addr = BA
Program PPB Bit.
Addr = SA
Read Byte Twice
Addr = SA0
DQ6 = ^No
Toggle?
Yes
No
DQ5 = 1?
Yes
Read Byte Twice
Addr = SA0
Wait 500 µs
DQ6 =
No
Toggle?
Read Byte.
Addr = SA
Yes
FAIL
No
DQ0 =
'1' (Erase)
'0' (Pgm.)?
Yes
PASS
Exit PPB
Command Set
7.3
Dynamic Protection Bits
Dynamic Protection Bits are volatile and unique for each sector and can be individually modified. DYBs only
control the protection scheme for unprotected sectors that have their PPBs cleared (erased to 1). By issuing
the DYB Set or Clear command sequences, the DYBs are set (programmed to 0) or cleared (erased to 1),
thus placing each sector in the protected or unprotected state respectively. This feature allows software to
easily protect sectors against inadvertent changes yet does not prevent the easy removal of protection when
changes are needed.
February 20, 2007 S29NS-P_00_A1
S29NS-P MirrorBit^TM Flash Family
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