© 2008 Microchip Technology Inc. DS21227F-page 13
25AA320/25LC320/25C320
4.0 PACKAGING INFORMATION
4.1 Package Marking Information
XXXXXXXX
XXXXXNNN
YYWW
8-Lead PDIP (300 mil)
Example:
14-Lead TSSOP
Example:
8-Lead SOIC (150 mil)
Example:
XXXXXXXX
XXXXYYWW
NNN
XXXXXXXX
NNN
25LC320
/PNNN
YYWW
25LC320
I/SN YYWW
NNN
25L32
YYWW
NNN
8-Lead TSSOP
Example:
XXXX
XYWW
NNN
5LBX
IYWW
NNN
YYWW
* Standard marking consists of Microchip part number, year code, week code, and traceability code. For
device markings beyond this, certain price adders apply. Please check with your Microchip Sales Office.
For QTP devices, any special marking adders are included in QTP price.
Legend: XX...X Customer-specific information
Y Year code (last digit of calendar year)
YY Year code (last 2 digits of calendar year)
WW Week code (week of January 1 is week ‘01’)
NNN Alphanumeric traceability code
Pb-free JEDEC designator for Matte Tin (Sn)
* This package is Pb-free. The Pb-free JEDEC designator ( )
can be found on the outer packaging for this package.
Note: 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.
3
e
3
e
3
e
25AA320/25LC320/25C320
DS21227F-page 14 © 2008 Microchip Technology Inc.


  !"#$%&"' ()"&'"!&)&#*&&&#
 +%&,&!&
- '!!#.#&"#'#%!&"!!#%!&"!!!&$#/!#
 '!#&.0
1,21!'!&$& "!**&"&&!
 3&'!&"&4#*!(!!&4%&&#&
&&255***''54
6&! 7,8.
'!9'&! 7 7: ;
7"')%! 7 <
& 1,
&& = = 
##44!!   - 
1!&&   = =
"#&"#>#& .  - -
##4>#& .   <
: 9& -< -? 
&& 9  - 
9#4!! <  
69#>#& )  ? 
9*9#>#& )  < 
: *+ 1 = = -
N
E1
NOTE 1
D
12
3
A
A1
A2
L
b1
b
e
E
eB
c
  * ,<1
© 2008 Microchip Technology Inc. DS21227F-page 15
25AA320/25LC320/25C320
 ! ""#$%& !'

  !"#$%&"' ()"&'"!&)&#*&&&#
 +%&,&!&
- '!!#.#&"#'#%!&"!!#%!&"!!!&$#''!#
 '!#&.0
1,2 1!'!&$& "!**&"&&!
.32 %'!("!"*&"&&(%%'&"!!
 3&'!&"&4#*!(!!&4%&&#&
&&255***''54
6&! 99..
'!9'&! 7 7: ;
7"')%! 7 <
& 1,
: 8& = = 
##44!!   = =
&#%%
+   = 
: >#& . ?1,
##4>#& . -1,
: 9& 1,
,'%@&A  = 
3&9& 9  = 
3&& 9 .3
3& I B = <B
9#4!!  = 
9#>#& ) - = 
#%& D B = B
#%&1&&' E B = B
D
N
e
E
E1
NOTE 1
12 3
b
A
A1
A2
L
L1
c
h
h
φ
β
α
  * ,1

25C320-E/SN

Mfr. #:
Manufacturer:
Microchip Technology
Description:
EEPROM 4kx8 - 5V
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union