PCF2123 datasheet(64/86 Pages) NXP

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NXP Semiconductors

PCA2131

Nano-power highly accurate RTC with integrated quartz crystal for automotive applications

VDD = 1.2 V to 5.5 V; VSS = 0 V; Tamb = +25 °C, unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VDD or VBAT = 3.3 V, Tamb =

+85 °C to +105 °C

TC_DIS = 0

[1] [2] -15

±8

+15

ppm

TC_DIS = 1

[1] [2] -320

-50

ppm

TC_DIS = 1, Tamb = 25 °C

[1] [2] -3

ppm

crystal aging

PCA2131

Δfxtal/fxtal

relative crystal

frequency variation

first year;

VDD or VBAT = 3.3 V

[3] -3

ppm

Δf/ΔV

frequency variation

with voltage

on pin CLKOUT

±1

ppm/V

Jitter

Output clock peak to

peak jitter

on pin CLKOUT

Table 90. Frequency characteristics...continued

[1]

±1 ppm corresponds to a time deviation of ±0.0864 seconds per day.

[2]

Only valid if CLKOUT frequencies are not equal to 32.768 kHz or if CLKOUT is disabled.

[3]

Not production tested. Effects of reflow soldering are included (see application note AN13202).

aaa-042794

-40

-20

100 105 120

-350

-250

-150

-50

Temperature (°C)

Frequency

stability

(ppm)

± 3 ppm

(3)

(1)

(2)

± 8 ppm

125

1. Typical temperature compensated RTC time accuracy response (TC_DIS = 0).

2. Typical CLKOUT frequency Y [ppm] = -0.035*(T-25C)2 (TC_DIS = 0 or 1).

3. Above maximum guaranteed operating temperature of +105 °C, the typical time accuracy is

based on the bench result.

Figure 39. Typical characteristic of frequency with respect to temperature of PCA2131

PCA2131

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 1.0 — 26 July 2021

64 / 86

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