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PCF2123 数据表(PDF) 4 Page - NXP Semiconductors

部件名 PCF2123
功能描述  Nano-power highly accurate RTC with integrated quartz crystal for automotive applications
PDF  86 Pages
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制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 NXP - NXP Semiconductors

PCF2123 数据表(HTML) 4 Page - NXP Semiconductors

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NXP Semiconductors
PCA2131
Nano-power highly accurate RTC with integrated quartz crystal for automotive applications
6 Pinning information
6.1 Pinning
aaa-041563
SCL
VDD
SDI
VBAT
SDO
BBS
SDA/CE
INTA
TS1
CLKOUT
VSS
IFS
TS2
PCA2131
INTB
TS3
TS4
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Figure 2. Pin configuration for PCA2131 (transparent top view)
6.2 Pin description
Input or input/output pins must always be at a defined level (VSS or VDD) unless otherwise specified.
Symbol
Pin
Description
SCL
2
combined serial clock input for both I2C-bus and SPI-bus
SDI
3
serial data input for SPI-bus
connect to pin VSS if I2C-bus is selected
SDO
4
serial data output for SPI-bus, push-pull
leave open or connect to pin VSS if I2C-bus is selected
SDA/CE
5
combined serial data input and output for the I2C-bus and chip enable
input (active LOW) for the SPI-bus
IFS
1
interface selector input
connect to pin VSS to select the SPI-bus
connect to pin VDD to select the I2C-bus
TS1,TS2,TS3,TS4,
8,9,10,11
timestamp input (active LOW) with 500 kΩ internal pull-up resistor (RPU)
CLKOUT
6
clock output (push-pull)
VSS
7
ground supply voltage
INTB
12
interrupt B output (open-drain; active LOW)
INTA
13
interrupt A output (open-drain; active LOW)
BBS
14
output voltage (battery backed)
Table 3. Pin description
PCA2131
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2021. All rights reserved.
Product data sheet
Rev. 1.0 — 26 July 2021
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