ZSC31015

Data Sheet

October 28, 2012

© 2012 Zentrum Mikroelektronik Dresden AG

— Rev. 2.00

All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without

the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.

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2.5.

Clock Generator / Power-On Reset (CLKPOR)

If the power supply exceeds 2.5V (maximum), the reset signal de-asserts and the clock generator starts working

at a frequency of approximately 512kHz (±20%). The exact value only influences the conversion cycle time and

communication to the outside world but not the accuracy of signal processing. In addition, to minimize the

2.5.1.

Trimming the Oscillator

Settings for the Osc_Trim bits in EEPROM fine-tune the oscillator frequency. See Table 3.5 for bit locations and

Important: Optimal oscillator trimming is determined during wafer-level testing and final package testing, and this

part-specific factory value, which can be copied to Osc_Trim, is stored in bits in the CUST_ID1 and CUST_ID2

EEPROM bits for applications requiring optimal response time. In this case, see section 5 for important notes and

instructions for copying these optimal values to the Osc_Trim bits before calibration. It is strongly recommended

that only the default value or the factory trim value be used because ZACwire

at different oscillator frequencies.

Table 2.2

Oscillator Trimming

Osc_Trim Bits

Delta Frequency (kHz)

100

+385

101

+235

110

+140

111

+65

000

Nominal

001

-40

010

-76

011

-110

2.6. Diagnostic Features

critical” applications. If the part is programmed in Analog Output Mode, then diagnostic states are indicated by

an output below 2.5% of VDD or above 97.5% of VDD. If the part is programmed in Digital Output Mode, then

diagnostic states will be indicated by a transmission with a generated parity error.

Table 2.3 gives a summary of the diagnostic features, which are explained in detail in the following sections.

EEPROM settings that control diagnostic functions are given in section 3.5.