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PCF2129AT/2 on a board, in 3D

PCF2129AT/2

NXP Semiconductors

-40℃~+85℃ 0.7uA 1.8V~4.2V 700nA Built-in I2C Watchdog timer、Temperature compensation、Backup power management and battery charging、Battery low-voltage detection、Timestamp function、Programmable clock output、Alarm function、Locking and tamper-proof、Periodic interrupt output Yes SOIC-20-300mil Real Time Clocks ROHS

Extended
DatasheetJLCPCBLCSCnxp/PCF2129AT/2
Category
Real Time Clocks
Package
SOIC-20-300mil
Pins
20

Overview

The PCF2129AT/2 is a real Time Clock made by NXP Semiconductors in a SOIC-20-300mil package with 20 pins. -40℃~+85℃ 0.7uA 1.8V~4.2V 700nA Built-in I2C Watchdog timer、Temperature compensation、Backup power management and battery charging、Battery low-voltage detection、Timestamp function、Programmable clock output、Alarm function、Locking and tamper-proof、Periodic interrupt output Yes SOIC-20-300mil Real Time Clocks ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Pro:PCF2129AT_2,518, from EasyEDA Pro) and its footprint (Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm, from KiCad's library), ready for a KiCad board. 1,742 are in stock at JLCPCB (part C47508). 5 open-source boards in 5 repositories on GitHub use it.

Symbol

SCL1SDI2SDO3SDA/CE#4IFS5TS#6CLKOUT7VSS8NC9NC10NC11NC12NC13NC14NC15NC16INT#17BBS18VBAT19VDD20
EasyEDA_Pro:PCF2129AT_2,518From EasyEDA Pro

Footprint

1234567891011121314151617181920
Package_SO:SOIC-20W_7.5x12.8mm_P1.27mmFrom KiCad's library

Parameters

8
Alarm Output
Yes
Current - Supply
700nA
Features
Temperature compensation
Interface
I2C
Operating Temperature
-40℃~+85℃
Quiescent Current(Iq)
0.7uA
Voltage - Supply
1.8V~4.2V
crystal oscillator
Built-in

Order codes

1

Pinout

20
The pins of the PCF2129AT/2
PinNameType
1SCLUnspecified
2SDIUnspecified
3SDOUnspecified
4SDA/CE#Unspecified
5IFSUnspecified
6TS#Unspecified
7CLKOUTUnspecified
8VSSUnspecified
9NCUnspecified
10NCUnspecified
11NCUnspecified
12NCUnspecified
13NCUnspecified
14NCUnspecified
15NCUnspecified
16NCUnspecified
17INT#Unspecified
18BBSUnspecified
19VBATUnspecified
20VDDUnspecified

Open-source boards using it

All 5
  • 2 layers274.3 × 30.5 mmNumitron2, the printed circuit board in 3D

    Numitron2

    74hc595/Numitron-Clock

    An alarm clock using 9-segment numitron displays

    56 parts6BSD-3-Clause
  • 2 layers344.8 × 217.8 mmClockblock pcb, the printed circuit board in 3D

    Clockblock pcb

    wileycousins/clockblock

    minimalistic LED clock in a block

    604 parts2
  • 4 layers46.5 × 67.8 mmLoggerhw v5.0, the printed circuit board in 3D

    Loggerhw v5.0

    BerkeleyLab/DxP-data-logger

    Hardware design for the DxP (Distributed sensor Profiling) data logger that connects to a DxP sensor probe.

    62 parts
  • 2 layers76 × 92.5 mmPcb gateway, the printed circuit board in 3D

    Pcb gateway

    mirra-org/mirra

    Firmware, web app/server and documentation for the MIRRA project.

    86 partsApache-2.0

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Questions

Is there a KiCad symbol and footprint for the PCF2129AT/2?

Yes. The symbol is EasyEDA_Pro:PCF2129AT_2,518 and the footprint Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the PCF2129AT/2?

SOIC-20-300mil, with 20 pins. Its footprint is drawn on this page.

Where is the PCF2129AT/2 datasheet?

NXP Semiconductors publishes it: the Datasheet link on this page opens it.

Where can I order the PCF2129AT/2?

JLCPCB lists it as part C47508, with 1,742 in stock; the sellers' links on this page open their listings.

What can replace the PCF2129AT/2?

Parts like it in the library: the DS3232SN#T&R by Maxim Integrated (Analog Devices), the DS3232S#T&R by Maxim Integrated (Analog Devices), the DS3234S#T&R by Maxim Integrated (Analog Devices) and the DS3232S# by Analog Devices. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the PCF2129AT/2?

5 boards in 5 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8