PCF2131 datasheet(61/86 Pages) NXP

61 / 86 page

NXP Semiconductors

PCF2131

Nano-power highly accurate RTC with integrated quartz crystal

VDD = 1.2 V to 5.5 V; VSS = 0 V; Tamb = -40 °C to +85 °C, unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

output sink current;

VOL = 0.4 V

on pin SDA/CE

[10] 3

IOL

LOW-level output current

on all other outputs

1.0

IOH

HIGH-level output current output source current; on pin

SDO, CLKOUT; VOH = 0.8 *

VDD

1.0

VO = VDD or VSS

µA

ILO

output leakage current

post ESD event

-1

µA

Table 89. Static characteristics...continued

[1]

For reliable oscillator start-up and OTP refresh at power-on: VDD needs to be above 1.8 V.

[2]

MAX IDD and IBAT determined by characterization.

[3]

Timer source clock = 1⁄60 Hz, level of pins SDA/CE, SDI, and SCL is VDD or VSS.

[4]

Production tested IDDparameter.

[5]

Any load in the application driven by CLKOUT adds to this value, e.g. 10 pF, Vdd = 3v3 will add 32768 Hz * 10 pF * 3.3 V = 1.1 µA.

[6]

When the device is supplied by the VBAT pin instead of the VDD pin, VDD = 0 V. The device can only start up from VDD.

[7]

The I2C-bus and SPI-bus interfaces of PCF2131 are 5 V tolerant.

[8]

Tested on sample basis.

[9]

Pin BBS is internally connected to either VDD or VBAT, see section Section 7.5.3.

[10] For further information, see Figure 36.

9.1 Current consumption characteristics, typical

aaa-041586

VDD (V)

IDD

(mA)

Typical value; VOL = 0.4 V.

Figure 36. IOL on pin SDA/CE

PCF2131

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

Product data sheet

Rev. 1.1 — 15 October 2021

61 / 86

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