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CAT25C09SE-TE13 Datasheet(Hoja de datos) 5 Page - Catalyst Semiconductor

No. de Pieza. CAT25C09SE-TE13
Descripción  1K/2K/4K/8K/16K SPI Serial CMOS EEPROM
Descarga  12 Pages
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Fabricante  CATALYST [Catalyst Semiconductor]
Página de inicio  http://www.catalyst-semiconductor.com
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5
CAT25C11/03/05/09/17
Doc. No. 1017, Rev. J
SPI modes (0,0 & 1,1).
SCK: Serial Clock
SCK is the serial clock pin. This pin is used to synchronize
the communication between the microcontroller and the
25C11/03/05/09/17. Opcodes, byte addresses, or data
present on the SI pin are latched on the rising edge of the
SCK. Data on the SO pin is updated on the falling edge of
the SCK for SPI modes (0,0 & 1,1).
CS
CS
CS
CS
CS: Chip Select
CS is the Chip select pin. CS low enables the CAT25C11/
03/05/09/17 and
CS high disables the CAT25C11/03/05/
09/17.
CS high takes the SO output pin to high impedance
76543210
WPEN
1
1
BP2
BP1
BP0
WEL
RDY
STATUS REGISTER
BP2
BP1
BP0
0
0
0
Non-Protection
0
0
1
Q1 Protected
0
1
0
Q2 Protected
0
1
1
Q3 Protected
1
0
0
Q4 Protected
1
0
1
H1 Protected
1
1
0
P0 Protected
1
1
1
Pn Protected
MEMORY PROTECTION
25C11
25C03
25C05
25C09
25C17
Q1
00-1F
00-3F
000-07F
000-0FF
000-1FF
Q2
20-3F
40-7F
080-0FF
100-1FF
200-3FF
Q3
40-5F
80-BF
100-17F
200-2FF
400-5FF
Q4
60-7F
C0-FF
180-1FF
300-3FF
600-7FF
H1
00-3F
00-7F
000-0FF
000-1FF
000-3FF
P0
00-0F
00-0F
000-00F
000-01F
000-01F
Pn
70-7F
F0-FF
1F0-1FF
3E0-3FF
7E0-7FF
Protected
Unprotected
Status
WPEN
WP
WP
WP
WP
WP
WEL
Blocks
Blocks
Register
0
X
0
Protected
Protected
Protected
0
X
1
Protected
Writable
Writable
1
Low
0
Protected
Protected
Protected
1
Low
1
Protected
Writable
Protected
X
High
0
Protected
Protected
Protected
X
High
1
Protected
Writable
Writable
WRITE PROTECT ENABLE OPERATION
and forces the devices into a Standby Mode (unless an
internal write operation is underway) The CAT25C11/03/
05/09/17 draws ZERO current in the Standby mode. A
high to low transition on
CS is required prior to any
sequence being initiated. A low to high transition on
CS
after a valid write sequence is what initiates an internal
write cycle.
WP
WP
WP
WP
WP: Write Protect
WP is the Write Protect pin. The Write Protect pin will allow
normal read/write operations when held high. When
WP is
tied low and the WPEN bit in the status register is set to "1",
all write operations to the 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 as already been
initiated,
WP going low will have no effect on any write
BYTE ADDRESS
Device
Address Significant Bits
Address Don't Care Bits
# Address Clock Pulse
CAT25C11
A6 - A0
A7
8
CAT25C03
A7 - A0
8
CAT25C05
A7 - A0 (A8 = X bit from Opcode)
8
CAT25C09
A9 - A0
A15 - A10
16
CAT25C17
A10 - A0
A15 - A11
16




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