JS28F128P30TF75A datasheet(28/90 Pages) MICRON

28 / 90 page

P30-65nm SBC

Datasheet

Apr 2010

Order Number: 208033-02

To read data from the device, the Read Array command must be issued. Read Array,

Read Status Register, Read Device Identifier, Read CFI, and Program Resume are valid

commands during a program suspend.

During a program suspend, deasserting CE# places the device in standby, reducing

active current. VPP must remain at its programming level, and WP# must remain

unchanged while in program suspend. If RST# is asserted, the device is reset.

8.5

Program Resume

The Resume command instructs the device to continue programming, and

automatically clears Status Register bits SR[7,2]. This command can be written to any

address. If error bits are set, the Status Register should be cleared before issuing the

next instruction. RST# must remain deasserted (see Figure 33, “Program Suspend/

Resume Flowchart” on page 74).

8.6

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 8: Example VPP Supply Connections

• Factory Programming with

PP = VPPH

• Complete write/Erase Protection when

PP ≤ VPPLK

VCC

VPP

VCC

VPP

• Low Voltage and Factory Programming

• Low-voltage Programming only

• Logic Control of Device Protection

VCC

VPP

• Low Voltage Programming Only

• Full Device Protection Unavailable

VCC

VPP

≤ 10K Ω

PROT #

PP=VPPH

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