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SST26WF040BT-104I/CS Datasheet(PDF) 38 Page - Microchip Technology

Part # SST26WF040BT-104I/CS
Description  1.8V 4 Mbit and 8 Mbit Serial Quad I/O (SQI) Flash Memory
PDF  96 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

SST26WF040BT-104I/CS Datasheet(HTML) 38 Page - Microchip Technology

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SST26WF040B/040BA SST26WF080B/080BA
DS20005283C-page 38
 2014-2017 Microchip Technology Inc.
5.37
Global Block-Protection Unlock
(ULBPR)
The Global Block-Protection Unlock (ULBPR) instruc-
tion clears all write-protection bits in the Block-Protec-
tion register, except for those bits that have been
locked down with the nVWLDR command. Execute
WREN before initiating the ULBPR instruction.
To execute a ULBPR instruction, the host drives CE#
low, then sends the ULBPR command cycle (98H), and
then drives CE# high.
FIGURE 5-44:
GLOBAL BLOCK-
PROTECTION UNLOCK
(SQI)
FIGURE 5-45:
GLOBAL BLOCK-PROTECTION UNLOCK (SPI)
2005283 F20.1
MODE 3
0
1
SCK
SIO(3:0)
CE#
C1 C0
MODE 0
Note: C[1:0]=98H
TABLE 5-6:
BLOCK-PROTECTION REGISTER FOR SST26WF040B/040BA 1
1. The default state after a power-on reset is write-protected BPR[23:0] = 5555 FF
BPR Bits
Address Range
Protected Block
Size
Read Lock
Write Lock/nVWLDR2
2. nVWLDR bits are one-time-programmable. Once a WLLDR bit is set, the protection state of that particular block is permanently write-locked.
23
22
07E000H-08FFFFH
8 KByte
21
20
07C000H-07DFFFH
8 KByte
19
18
07A000H-07BFFFH
8 KByte
17
16
078000H - 079FFFH
8 KByte
15
14
006000H - 007FFFH
8 KByte
13
12
004000H - 005FFFH
8 KByte
11
10
002000H - 003FFFH
8 KByte
9
8
000000H - 001FFFH
8 KByte
7
070000H - 077FFFH
32 KByte
6
008000H - 00FFFFH
32 KByte
5
060000H - 06FFFFH
64 KByte
4
050000H - 05FFFFH
64 KByte
3
040000H - 04FFFFH
64 KByte
2
030000H - 03FFFFH
64 KByte
1
020000H - 02FFFFH
64 KByte
0
010000H - 01FFFFH
64 KByte
2005283 F68.0
MODE 3
0
1
SCK
SIO0
CE#
MODE 0
234567
98
SIO[3:1]



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