E1217X-VC View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

E1217X-VC

32-kHz Standard Watch CMOS IC

Atmel Corporation 

Test Crystal

Specification

Additional Notes

Figure 2. Functional Test Circuit

VSS

1

RESET

8

TEST

2

CTR OSCIN

3

4

OSCOUT

e1217X

7 MOT1

RL

6 MOT2

5

VDD

e1217X

Range of trimmer capacitance: CTR = 5 pF to 30 pF

Frequency

Series resistance

Static capacitance

Dynamic capacitance

Load capacitance

f = 32,768 Hz

RS = 30 kW

C0 = 1.5 pF

C1 = 3 fF

CL = 8 pF

1. It is recommended to connect the quartz case to VDD (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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