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STD RC2014 DS1302 RTC Shrink

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Update time: 2020-05-12 06:53:01
Creation time: 2020-05-05 16:19:18
Description
A shrunk down variant of Ed Brindley's RC2014 DS1302 board. This is compatible with the original kit components except for the use of a 1225 battery holder (p/n BS-1225-PC). While the original respin has been left up, further production should be of revision 2. Traces were re-routed to better avoid PCB edge and the crystal has been placed in better accordance with Maxim recommendations (including removal of ground plane in that region). Attributions: Ed Brindley: https://github.com/electrified/rc2014-ds1302-rtc Sergey: http://www.malinov.com/Home/sergeys-projects/zeta-sbc-v2
Design Drawing
schematic diagram
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PCB
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ID Name Designator Footprint Quantity
1 RC2014 BUS P1 RC2014BUS-1X39-AMR 1
2 10K RN1 SIP8 1
3 0.1uF C1,C2,C3,C4,C5 C_DISC_D3.0MM_W2.0MM_P2.50MM 5
4 SW_DIP_x06 SW1 DIP_6-300 1
5 DS1302 U4 DIP-8 1
6 Crystal Y1 CRYSTAL_ROUND_D2.0MM_VERTICAL 1
7 Battery_Cell BT1 BATTERY HOLDER BS-1225-PC 1
8 74HCT688 U1 DIP-20 1
9 74HCT174 U3 DIP-16 1
10 74HCT125 U2 DIP-14 1
11 74HCT32 U5 DIP-14 1

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