Datasheet

18
AT42QT1040 [DATASHEET]
9524D–AT42–05/2013
5.7 Marking
Either of the following two markings may be used:
5.8 Part Number
The part number comprises:
AT = Atmel
42 = Touch Business Unit
QT = Charge-transfer technology
1040 = (1) Keys only (04) number of channels (0) variant number
MMH = Package identifier
Program Week Code Number 1-52 Where:
A=1B=2...Z=26
then using the underscore A
=27...Z=52
140
R1
Pin1ID
Code Revision:
1.0 Released
Abbreviation of
Part Number:
AT42QT
1 0 40
140
R1X
Pin1ID
Code Revision:
R1 = 1.0 Released
Abbreviation of
Part Number:
AT42QT
1 0 40
Traceability Code
(Y = last digit of year; for example, 9 = 2009, 0 = 2010, etc
ZZ = assembly trace code)
Assembly
Location Code
YZZ
Part Number Description
AT42QT1040-MMH 20-pin 3 x 3 mm VQFN RoHS compliant