E1217X ATMEL [ATMEL Corporation], E1217X Datasheet - Page 5

• Manufacturer Part Number: E1217X
• Description: 32 KHZ STANDARD WATCH CMOS IC
• Manufacturer: ATMEL [ATMEL Corporation]

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