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CAT25040ZI-GT3 데이터시트(PDF) 9 Page - Catalyst Semiconductor

부품명 CAT25040ZI-GT3
상세설명  1K/2K/4K SPI Serial CMOS EEPROM
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제조업체  CATALYST [Catalyst Semiconductor]
홈페이지  http://www.catalyst-semiconductor.com
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CAT25040ZI-GT3 데이터시트(HTML) 9 Page - Catalyst Semiconductor

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CAT25010, CAT25020, CAT25040
Doc. No. 1006, Rev. S
© 2006 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Figure 9.
HOLD
HOLD
HOLD
HOLD
HOLD Timing
Figure 8. Page Write Instruction Timing
Note: Dashed Line= mode (1, 1) – ––––
*X=0 for 25010, 25020 ; X=A8 for 25040
Note: Dashed Line= mode (1, 1) – ––––
CS
SCK
HOLD
SO
tCD
tHD
tHD
tCD
tLZ
tHZ
HIGH IMPEDANCE
SCK
SI
SO
00
00
00
10
BYTE ADDRESS
Data
Byte 1
012345678
13
14
15 16-23
24-31
Data
Byte 2
Data
Byte 3
Data Byte N
CS
OPCODE
7..1
0
16+(N-1)x8-1..16+(N-1)x8 16+Nx8-1
DATA IN
HIGH IMPEDANCE
A7
A0
X*
Figure 10.
WP
WP
WP
WP
WP Timing
CS
SCK
WP
WP
tWPS
tWPH
Note: Dashed Line= mode (1, 1) – ––––
must be set high after the proper number of clock cycles
to start an internal write cycle. Access to the array
during an internal write cycle is ignored and program-
ming is continued. On power up, SO is in a high
impedance. If an invalid opcode is received, no data will
be shifted into the CAT25010/20/40, and the serial
output pin (SO) will remain in a high impedance state
until the falling edge of
CS is detected again.
DESIGN CONSIDERATIONS
The CAT25010/20/40 powers up in a write disable state
and in a low power standby mode. A WREN instruction
must be issued to perform any writes to the device after
power up. After power up,
CS must be brought low to
enter a ready state and receive an instruction. After a
successful byte/page write or status register write, the
CAT25010/20/40 goes into a write disable mode.
CS


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