M750000004 datasheet(44/129 Pages) SPANSION

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M750000004 데이터시트(PDF) 44 Page - SPANSION

부품명	M750000004

상세설명	128 Megabit (8 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Read/Write Flash Memory

PDF	129 Pages

Scroll/Zoom	100%

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44 / 129 page

Am75PDL191CHHa/Am75PDL193CHHa

January 14, 2004

ADV ANCE

I N FO RMAT I O N

If the Password Mode Locking Bit is not set, including

Persistent Protection Mode, the PPB Lock Bit is

cleared after power-up or hardware reset. The PPB

Lock Bit is set by issuing the PPB Lock Bit Set com-

mand. Once set the only means for clearing the PPB

Lock Bit is by issuing a hardware or power-up reset.

The Password Unlock command is ignored in Persis-

tent Protection Mode.

High Voltage Sector Protection

Sector protection and unprotection may also be imple-

mented using programming equipment. The proce-

dure requires high voltage (V

ID) to be placed on the

RESET# pin. Refer to Figure 1 for details on this pro-

cedure. Note that for sector unprotect, all unprotected

sectors must first be protected prior to the first sector

write cycle.

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