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CAT25010LET3 датащи(PDF) 8 Page - Catalyst Semiconductor

номер детали CAT25010LET3
подробное описание детали  1-Kb, 2-Kb and 4-Kb SPI Serial CMOS EEPROM
PDF  17 Pages
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производитель  CATALYST [Catalyst Semiconductor]
домашняя страница  http://www.catalyst-semiconductor.com
Logo CATALYST - Catalyst Semiconductor

CAT25010LET3 датащи(HTML) 8 Page - Catalyst Semiconductor

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CAT25010, CAT25020, CAT25040
Doc. No. MD-1006 Rev. T
8
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Write Status Register
The Status Register is written by sending a WRSR
instruction according to timing shown in Figure 6. Only
bits 2 and 3 can be written using the WRSR
command.
Write Protection
When WP
¯¯¯ input is low all write operations to the
memory array and Status Register are inhibited. WP
¯¯¯
going low while CS
¯¯ is still low will interrupt a write to
the status register. If the internal write cycle has
already been initiated, WP
¯¯¯ going low will have no
effect on any write operation to the Status Register.
The WP
¯¯¯ input timing is shown in Figure 7.
Figure 6. WRSR Timing
Note:
Dashed Line = mode (1, 1) - - - - - -
Figure 7. WP
¯¯¯ Timing
Note:
Dashed Line = mode (1, 1) - - - - - -
01
2
3
4
5
6
7
8
10
911
12
13
14
SCK
SI
MSB
HIGH IMPEDANCE
DATA IN
15
SO
CS
7
6
5
4
3
2
10
00
0
0
0
0
0
1
OPCODE
CS
SCK
WP
WP
t WPS
t WPH



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