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NX25F011B View Datasheet(PDF) - Unspecified

Part NameDescriptionManufacturer
NX25F011B 1M-BIT, 2M-BIT, AND 4M-BIT SERIAL FLASH MEMORIES WITH 4-PIN SPI INTERFACE ETC1
Unspecified 
NX25F011B Datasheet PDF : 37 Pages
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NX25F011B
NX25F021B
NX25F041B
Table 2A. Write Protect Range Sector Selection (Hex)
Write Protect
Range Config. Bits
WR3 WR2 WR1 WR0
00 00
00
00
00
01
01
01
01
10
10
10
10
11
11
11
01
10
11
00
01
10
11
00
01
10
11
00
01
10
11 11
(NX25F011B)
Write Protected Sectors
WD=0
WD=1
None
None
000 - 01FH
000 - 03FH
000 - 05FH
000 - 07FH
000 - 09FH
000 - 0BFH
000 - 0DFH
000 - 0FFH
000 - 11FH
000 - 13FH
000 - 15FH
000 - 17FH
000 - 19FH
000 - 1BFH
1 E0 - 1FF
1 C0 - 1FF
1 A0 - 1FF
1 80 - 1FF
1 60 - 1FF
1 40 - 1FF
1 20 - 1FF
1 00 - 1FF
0 E0 - 1FF
0 C0 - 1FF
0 A0 - 1FF
0 80 - 1FF
0 60 - 1FF
0 40 - 1FF
ALL
ALL
Table 2C. Write Protect Range Sector Selection (Hex)
Write Protect
Range Config. Bits
WR3 WR2 WR1 WR0
00
00
00
00
01
01
01
01
10
10
00
01
10
11
00
01
10
11
00
01
10
10
11
10
11
00
11
11
01
10
11 11
(NX25F041B)
Write Protected Sectors
1
WD=0
WD=1
None
None
000 - 01FH
000 - 03FH
2 7 E0 - 7FFH
7 C0 - 7FFH
000 - 05FH
7 A0 - 7FFH
000 - 07FH
000 - 09FH
000 - 0BFH
7 80 - 7FFH
3 7 60 - 7FFH
7 40 - 7FFH
000 - 0DFH
7 20 - 7FFH
000 - 0FFH
000 - 11FH
4 7 00 - 7FFH
6 E0 - 7FFH
000 - 13FH
6 C0 - 7FFH
000 - 15FH
000 - 17FH
000 - 19FH
6 A0 - 7FFH
5 6 80 - 7FFH
6 60 - 7FFH
000 - 1BFH
6 40 - 7FFH
ALL
ALL
6
Table 2B. Write Protect Range Sector Selection (Hex)
Write Protect
Range Config. Bits
WR3 WR2 WR1 WR0
00 00
00
00
01
10
00
01
01
11
00
01
01
01
10
10
11
00
10
10
10
01
10
11
11
11
11
00
01
10
11 11
(NX25F021B)
Write Protected Sectors
WD=0
WD=1
None
None
000 - 01FH
000 - 03FH
3 E0 - 3FF
3 C0 - 3FF
000 - 05FH
000 - 07FH
000 - 09FH
3 A0 - 3FF
3 80 - 3FF
3 60 - 3FF
000 - 0BFH
000 - 0DFH
000 - 0FFH
3 40 - 3FF
3 20 - 3FF
3 00 - 3FF
000 - 11FH
000 - 13FH
000 - 15FH
2 E0 - 3FF
2 C0 - 3FF
2 A0 - 3FF
000 - 17FH
000 - 19FH
000 - 1BFH
2 80 - 3FF
2 60 - 3FF
2 40 - 3FF
ALL
ALL
7 HOLD-R/B, HR[1:0]
The Hold-Ready/Busy (HOLD-R/B) bits HR1 and HR0 are
located at bits CF[1:0] of the configuration register. These
two bits select one of four possible functions: No Connect,
8 HOLD input, R/B Output, or R/B Output with open drain. The
factory setting for the pin is No Connect.
HR1 HR0 Pin Configuration
0
0
HOLD input
9
0
1
No Connect
1
0
R/B Output (Open Drain)
1
1
R/B Output
10
Configured as a R/B output, the pin can serve as a system
interrupt. When R/B is high, the array is ready to be
programmed. When R/B is low, it is busy programming. If
1 1 configured with an open-drain, an external pull-up resistor
should be used.
As a HOLD input, the pin can be used in conjunction with
1 2 the CS and SCK pin to suspend a serial command
sequence without resetting the command. This can be
useful if a command is in process and a higher priority
task on the same SPI bus needs to be attended to. To
NexFlash Technologies, Inc.
11
PRELIMINARY NXSF016F-1201
12/12/01 ©
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