23a640 Microchip Technology Inc., 23a640 Datasheet - Page 13

• Manufacturer Part Number: 23a640
• Description: 64k Spi Bus Low-power Serial Sram
• Manufacturer: Microchip Technology Inc.

4.0
4.1
© 2009 Microchip Technology Inc.
PACKAGING INFORMATION
Package Marking Information
8-Lead SOIC (3.90 mm)
8-Lead PDIP
XXXXXXXT
XXXXYYWW
XXXXXXXX
T/XXXNNN
8-Lead TSSOP
Legend: XX...X
Note:
e
Note:
3
YYWW
NNN
TYWW
XXXX
NNN
For very small packages with no room for the Pb-free JEDEC designator
In the event the full Microchip part number cannot be marked on one line, it will
be carried over to the next line, thus limiting the number of available
characters for customer-specific information.
e
3
T
Y
YY
WW
NNN
e
3
, the marking will only appear on the outer carton or reel label.
Part number or part number code
Temperature (I, E)
Year code (last digit of calendar year)
Year code (last 2 digits of calendar year)
Week code (week of January 1 is week ‘01’)
Alphanumeric traceability code (2 characters for small packages)
Pb-free JEDEC designator for Matte Tin (Sn)
23K640I
SN
Example:
Example:
23K640
I/P
e
e
3
e
3
Example:
0528
Preliminary
3
1L7
0528
1L7
K640
I837
1L7
23A640/23K640
DS22126B-page 13