JS48F4000P0ZBQ0 데이터 시트보기 (PDF) - Numonyx -> Micron

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JS48F4000P0ZBQ0

Numonyx™ StrataFlash® Embedded Memory (P30)

Numonyx -> Micron 

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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