2 layers170 × 170 mm
2 layers76.2 × 49.5 mm
Extensions pour ORIC1-ATMOS
- Size
- 76.2 × 49.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 15
- Nets
- 48
- Pads
- 117
- Tracks, vias
- 295, 7
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 6 Apr 2022
- Updated
- 20 Sep 2026
Overview
RTC is an open-source printed circuit board by Fred72z, from the Fred72z/ORIC repository on GitHub, published under the GPL-2.0 licence. It is a 2-layer board of 76.2 × 49.5 mm with 15 parts on 48 nets, routed with 295 tracks and 7 vias.
It is built around the ICM7170IBG and CR1220-2. Its parts include 5 capacitors, 2 ICs, 1 resistor, 1 diode and 1 connector. It belongs with the FPGA and CPLD boards of this library.
Main components
2
ICM7170IBG
SOIC-24-40℃~+85℃ 1.6mA 1.9V~5.5V、2.6V~5.5V 20uA 400uA Bidirectional ICM7170 Tri-State SOIC-24 Buffers, Drivers, Receivers, Transceivers ROHSRochester Electronics, LLCBuffers, Drivers, Receivers, Transceivers
CR1220-2
--40~80℃ Battery base CR1220 Phosphor bronze - Battery holder base ROHSQ&JButton And Strip Battery Connector
README
README.mdBUS ORIC
Ensemble de platines pouvant se connecter sur un boitier principal connecté au port EXPANSION de l'oric.
EXP CARTOUCHE
Extension permettant de remplacer la ROM interne par une cartouche ROM externe
TELESTRAT II et TELESTRAT III
Nouvelles machines TELESTRAT. (Dans la série si vous ne pouvez pas la trouver, faites la vous-même :)).
Parts
15| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 22pF | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C3, C6 |
| 1 | 100nF | Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm | C2 |
| 1 | 10K | Resistor_THT:R_Array_SIP5 | RN1 |
| 1 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1 |
| 1 | 2.2k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1 |
| 1 | 22k | Resistor_THT:R_Array_SIP9 | RN2 |
| 1 | 32.768kHz | Crystal:Crystal_AT310_D3.0mm_L10.0mm_Horizontal_1EP_style2 | Y1 |
| 1 | 47µF | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C1 |
| 1 | 50pF | Capacitor_THT:Trimmer_Cap_TZ03F | C5 |
| 1 | CR1220 | Battery:BatteryHolder_BC501SM | BT1 |
| 1 | GAL16V8 | Package_DIP:DIP-20_W7.62mm_LongPads | U2 |
| 1 | ICM7170 | Package_DIP:DIP-24_W15.24mm_LongPads | U1 |
| 1 | IRQ_RTC | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 1 | SLOT1 | Connector_IDC:IDC-Header_2x17_P2.54mm_Horizontal | J1 |
Questions
How big is the RTC PCB?
It measures 76.2 × 49.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the RTC use?
15 parts, built around the ICM7170IBG and CR1220-2. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the RTC KiCad files?
From the Fred72z/ORIC repository on GitHub, at the commit this page was made from: the board is BUS_ORIC/Extensions/RTC/Kicad5/RTC.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the RTC design in my own project?
Its repository publishes it under the GPL-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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