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CAT64LC40LA-T3 Datasheet(PDF) 5 Page - ON Semiconductor

Part # CAT64LC40LA-T3
Description  4 kb SPI Serial EEPROM
Download  12 Pages
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

CAT64LC40LA-T3 Datasheet(HTML) 5 Page - ON Semiconductor

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CAT64LC40
http://onsemi.com
5
Device Operation
The CAT64LC40 is a 4 kb nonvolatile memory intended
for use with all standard controllers. The CAT64LC40 is
organized in a 256 x 16 format. All instructions are based on
an 8−bit format. There are four 16−bit instructions: READ,
WRITE, EWEN, and EWDS. The CAT64LC40 operates on
a single power supply ranging from 2.5 V to 6.0 V and it has
an on−chip voltage generator to provide the high voltage
needed during a programming operation. Instructions,
addresses and data to be written are clocked into the DI pin
on the rising edge of the SK clock. The DO pin is normally
in a high impedance state except when outputting data in a
READ operation or outputting RDY/BSY status when
polled during a WRITE operation.
The format for all instructions sent to this device includes
a 4−bit start sequence, 1010, a 4−bit op code and an 8−bit
address field or dummy bits. For a WRITE operation, a
16−bit data field is also required following the 8−bit address
field.
SK
DI
DO
RESET
Figure 3. Synchronous Data Timing
tRESS
tRESH
tRC
tCSS
CS
RDY/BUSY
tDIS
tDIH
tSKLOW
tSKHI
tCSH
tCSMIN
tHZ
tSV
tSV
tPD0, tPD1
Figure 4. Read Instruction Timing
*Please check the instruction set table for address
SK
DI
DO
RESET
1
ADDRESS*
D15 D14
D1 D0
HIGH
01
0
1
0
0
0
CS
RDY/BUSY


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