JS48F0000P0ZB00 View Datasheet(PDF) - Numonyx -> Micron
Part Name
Description
MFG CO.
'JS48F0000P0ZB00' PDF : 99 Pages View PDF
P30
11.6
Program Protection
When VPP = VIL, absolute hardware write protection is provided for all device blocks. If
VPP is at or below VPPLK, programming operations halt and SR[3] is set indicating a VPP-
level error. Block lock registers are not affected by the voltage level on VPP; they may
still be programmed and read, even if VPP is less than VPPLK.
Figure 29: Example VPP Supply Connections
VCC
VPP
≤ 10K Ω
VCC
VPP
VCC
PROT #
VCC
VPP
• Factory Programming with VPP = VPPH
• Complete write/Erase Protection when VPP ≤ VPPLK
• Low-voltage Programming only
• Logic Control of Device Protection
VCC
VPP=VPPH
VCC
VPP
• Low Voltage and Factory Programming
VCC
VCC
VPP
• Low Voltage Programming Only
• Full Device Protection Unavailable
November 2007
Order Number: 306666-11
Datasheet
61
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