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STD SC505 v1.0 RTC and I2C
Profile：SC505 v1.0 RTC and I2C for Z50Bus
License: Public Domain
Project source: Cloned from SC144 v1.1
Description
SC505 v1.0 (www.scc.me.uk)
Real-time clock and I2C bus master card for Z50Bus.
Documentation at www.scc.me.uk
Design Drawing
schematic diagram
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SC505 v1.0.0 RTC and I2C - sheet 2 of 2
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SC505 v1.0.0 RTC and I2C - sheet 1 of 2
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PCB
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | BATT-CR2032 | B1 | BATT-CR2032 | 1 |
| 2 | 100nF | C3,C4,C5,C6,C1,C2 | CAP-RAD-2.54MM | 6 |
| 3 | 100uF | C7 | CAP-ELEC-RAD-2.54MM | 1 |
| 4 | HDR_1x06_S_M | P2,P3,P4,P5,P7,P8,P9 | HDR-1X06-S-M-2.54MM | 7 |
| 5 | Outputs | P6 | HDR-1X05-S-M-2.54MM | 1 |
| 6 | 10k | R1,R2,R3,R4 | AXIAL-0.3 | 4 |
| 7 | 74HCT273 | U3 | PDIP-20 | 1 |
| 8 | DS1302 | U6 | PDIP-08 | 1 |
| 9 | Xtal 32.768KHz | X1 | XTAL 32.768KHZ | 1 |
| 10 | 74HCT125 | U4,U5 | PDIP-14 | 2 |
| 11 | Jumper_8X2 | JP1 | HDR-2X08-S-M-2.54MM | 1 |
| 12 | USR3 = SCL | JP2 | HDR-1X02-S-M-2.54MM | 1 |
| 13 | USR0 = SDA | JP3 | HDR-1X02-S-M-2.54MM | 1 |
| 14 | SCL | LED1 | LED-3MM/2.54 | 1 |
| 15 | SDA | LED2 | LED-3MM/2.54 | 1 |
| 16 | Z50Bus Card Plug Large | P1 | Z50BUS-HDR-2X25-A-M-2.54MM | 1 |
| 17 | 1k | R5,R6 | AXIAL-0.3 | 2 |
| 18 | 8x100k | RN1 | SIL-9 | 1 |
| 19 | 74HCT688 | U1 | PDIP-20 | 1 |
| 20 | 74HCT32 | U2 | PDIP-14 | 1 |
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