10. Packaging Information
10.1 Package Marking Information
DRAWING NO. REV. TITLE
21CS01/11SM A
9/11/17
AT21CS01/11SM,
AT21CS01 and AT21CS11 Package
Marking Information
YYWWNNN
### % CO
ATMLHYWW
8-lead SOIC
Note 2: Package drawings are not to scale
Note 1: designates pin 1
AT21CS01/AT21CS11: Package Marking Information
Diagram Order: EIAJ, PDIP, SOIC,TSSOP, UDFN, SOT23,VFBGA,XDFN
Catalog Number Truncation
AT21CS01
AT21CS11
Truncation Code ###: K1M
Truncation Code ###: K2
Date Codes Slave Address
Y = Year M = Month WW = Work Week of Assembly % = Slave Address
7: 2017 1: 2021 A: January 02: Week 2 A: Address 000 E: Address 100
8: 2018 2: 2022 B: February 04: Week 4 B: Address 001 F: Address 101
9: 2019 3: 2023 ... ... C: Address 010 G: Address 110
0: 2020 4: 2024 L: December 52: Week 52 D: Address 011 H: Address 111
Country of Assembly Trace Code Atmel Truncation
CO = Country of Assembly NNN or NN AT: Atmel
ATM: Atmel
ATML: Atmel
l
WWNNN
3-lead SOT-23
NN
4-ball WLCSP
ATML
###%Y
WWNNN
2-ld XSFN
(AT21CS01 only)
AT21CS01/AT21CS11
© 2017 Microchip Technology Inc.
Datasheet
DS20005857A-page 37
DRAWING NO. REV. TITLE
GPC
2MS-1 B
10/14/14
2MS-1, 2-pad 5.0x3.5 mm Body, 0.40 thick,
Extra Thin Single Flat No Lead Package (XSFN)
YDR
COMMON DIMENSIONS
(Unit of Measure = mm)
SYMBOL
MIN
TYP
MAX
NOTE
A 0.30 0.35 0.40
A1 0.00 0.035 0.05
A3 0.127 REF
b 1.05 1.10 1.15 3
L 4.55 4.60 4.65
D 5.00 BSC
E 3.50 BSC
e 2.00 BSC
0 - - 2
K 0.90 REF
Notes:
1. Dimensioning and tolerancing conform to ASME Y14.5M - 1994.
2. All dimensions are in millimeters, 0 is in degrees.
3. Dimension ‘b’ applies to metallized terminal and is measured between 0.15
and 0.30mm from terminal tip. If the terminal has the optional radius on the
other end of the terminal, the dimension ‘b’ should not be measured in that
radius area.
4. Maximum package warpage is 0.05mm.
5. Maximum allowable burrs is 0.076mm in all directions.
6. Pin #1 on top will be laser marked.
7. Unilateral coplanarity zone applies to the exposed heat sink slug as well as
the terminals.
0.10
m
C
A B
v
0.05
C
3
6
TOP VIEW
BOTTOM VIEW
(DATUM A)
B
A
k
0.10
C
4X
Pin1 Corner
(DATUM B)
1
2
A1
SEATING PLANE
A3
C
SIDE VIEW
1
2
D
E
A
7
0
C0.60 X 45°
e
b
L
0.200
0.200
K
7
Pin1 Corner
m
k
0.050
C
h
0.10
C
Note:  For the most current package drawings, please see the Microchip Packaging Specification located
at http://www.microchip.com/packaging.
AT21CS01/AT21CS11
© 2017 Microchip Technology Inc.
Datasheet
DS20005857A-page 38
AT21CS01 [DATASHEET]
Atmel-8903A-SEEPROM-AT21CS01-Datasheet_082015
34
12.2 3ST1 — 3-lead SOT23
TITLE
DRAWING NO.GPC
REV.
3TS1
12/11/09
COMMON DIMENSIONS
(Unit of Measure = mm)
SYMBOL
MIN
NOM
MAX
NOTE
End View
Side View
Top View
3TS1, 3-lead, 1.30mm Body, Plastic Thin
Shrink Small Outline Package (Shrink SOT)
BTBG
0.89
0.01
0.88
2.80
2.10
1.20
0.30
A
A1
A2
D
E
E1
L1
e1
b
-
-
-
2.90
-
1.30
0.54 REF
1.90 BSC
-
1.12
0.10
1.02
3.04
2.64
1.40
0.50
1,2
1,2
3
Notes: 1. Dimension D does not include mold flash, protrusions or gate
burrs. Mold flash, protrusions or gate burrs shall not exceed
0.25mm per end. Dimension E1 does not include interlead flash
or protrusion. Interlead flash or protrusion shall not exceed
0.25mm per side.
2. The package top may be smaller than the package bottom.
Dimensions D and E1 are determined at the outermost extremes
of the plastic body exclusive of mold flash, tie bar burrs, gate
burrs and interlead flash, but including any mismatch between
the top and bottom of the plastic body.
3. These dimensions apply to the flat section of the lead between
0.08 mm and 0.15mm from the lead tip.
This drawing is for general information only. Refer to JEDEC
Drawing TO-236, Variation AB for additional information.
C
L
L1
3
E
E1
1
2
e1
SEATING
PLANE
b
A2
A
A1e
D
GND
SDA V
CC
Note:  For the most current package drawings, please see the Microchip Packaging Specification located
at http://www.microchip.com/packaging.
AT21CS01/AT21CS11
© 2017 Microchip Technology Inc.
Datasheet
DS20005857A-page 39

AT21CS01-SSHM11-T

Mfr. #:
Manufacturer:
Microchip Technology / Atmel
Description:
EEPROM SEEPROM, 1K, SW - 1.7-3.6V, 125Kbps, Ind Tmp, 8-SOIC
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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