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Part Name
Description
E1217X-S View Datasheet(PDF) - Atmel Corporation
Part Name
Description
Manufacturer
E1217X-S
32-kHz Standard Watch CMOS IC
Atmel Corporation
E1217X-S Datasheet PDF : 8 Pages
1
2
3
4
5
6
7
8
Test Crystal
Specification
Additional Notes
Figure 2.
Functional Test Circuit
V
SS
1
RESET
8
TEST
2
C
TR
OSCIN
3
4
OSCOUT
e1217X
7
MOT1
R
L
6
MOT2
5
V
DD
e1217X
Range of trimmer capacitance: C
TR
= 5 pF to 30 pF
Frequency
Series resistance
Static capacitance
Dynamic capacitance
Load capacitance
f = 32,768 Hz
R
S
= 30 k
W
C
0
= 1.5 pF
C
1
= 3 fF
C
L
= 8 pF
1. It is recommended to connect the quartz case to V
DD
(by conductive epoxy).
2. Capacitive coupling of TEST to OSCIN must be minimized by appropriate layout
of the PCB to avoid disturbancing the oscillator.
5
4728A–CLOCK–06/03
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