SST25VF064C-80-4I-Q2CE datasheet(8/31 Pages) SST

부품명	SST25VF064C-80-4I-Q2CE

상세설명	64 Mbit SPI Serial Dual I/O Flash

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제조업체	SST [Silicon Storage Technology, Inc]

홈페이지	http://www.sst.com/

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8

Data Sheet

64 Mbit SPI Serial Dual I/O Flash

SST25VF064C

S71392-04-000

04/10

Block Protection (BP3,BP2, BP1, BP0)

The Block-Protection (BP3, BP2, BP1, BP0) bits define the

size of the memory area, as shown in Table 5, to be soft-

ware protected against any memory Write (Program or

Erase) operation. The Write-Status-Register (WRSR)

instruction is used to program the BP3, BP2, BP1 and BP0

bits as long as WP# is high or the Block-Protect-Lock

(BPL) bit is 0. Chip-Erase can only be executed if Block-

Protection bits are all 0. After power-up, BP3, BP2, BP1

and BP0 are set to the defaults specified in Table 5.

Block Protection Lock-Down (BPL)

WP# pin driven low (VIL), enables the Block-Protection-

Lock-Down (BPL) bit. When BPL is set to 1, it prevents any

further alteration of the BPL, BP3, BP2, BP1, and BP0 bits.

When the WP# pin is driven high (VIH), the BPL bit has no

effect and its value is “Don’t Care”. After power-up, the BPL

bit is reset to 0.

Security ID Status (SEC)

The Security ID Status (SEC) bit indicates when the Secu-

rity ID space is locked to prevent a Write command. The

SEC is ‘1’ after the host issues a Lockout SID command.

Once the host issues a Lockout SID command, the SEC bit

can never be reset to ‘0.’

TABLE

5: Software Status Register Block Protection FOR SST25VF064C

Protection Level

Status Register Bit1

1. Default at power-up for BP3, BP2, BP1, and BP0 is ‘1111’. (All Blocks Protected)

Protected Memory Address

BP3

BP2

BP1

BP0

64 Mbit

None

0

None

Upper 1/128

0

1

7F0000H-7FFFFFH

Upper 1/64

0

1

0

7E0000H-7FFFFFH

Upper 1/32

0

1

7C0000H-7FFFFFH

Upper 1/16

0

1

0

780000H-7FFFFFH

Upper 1/8

0

1

0

1

700000H-7FFFFFH

Upper 1/4

0

1

0

600000H-7FFFFFH

Upper 1/2

0

1

400000H-7FFFFFH

All Blocks

1

0

000000H-7FFFFFH

All Blocks

1

0

1

000000H-7FFFFFH

All Blocks

1

0

1

0

000000H-7FFFFFH

All Blocks

1

0

1

000000H-7FFFFFH

All Blocks

1

0

000000H-7FFFFFH

All Blocks

1

0

1

000000H-7FFFFFH

All Blocks

1

0

000000H-7FFFFFH

All Blocks

1

000000H-7FFFFFH

T5.0 1392

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